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If your 2008-2011 Subaru Impreza is losing cooling power or making noise when the system runs, replacing the AC compressor is often the necessary fix. Choosing the right compressor matters because improper fitment, wrong clutch type, or low durability will leave you with repeat repairs or poor cabin comfort.This guide covers seven shortlisted AC compressors suited to the 2008-2011 Impreza and explains the key factors that influence performance, longevity, and installation. We evaluate fitment specifics, compressor type, clutch and pulley compatibility, and expected durability so you can pick the best option for your driving needs. Read on to understand what to check before you buy and how to plan the replacement job.
Looking for other parts? See all Subaru Impreza parts & accessories.
Top Picks at a Glance
| Best Overall The best all-around choice for most situations | Subaru A/C Compressor Assembly 73111FG002 (Genuine) |  |
| Best Quality Built to a higher standard if you want something more solid | AISIN ACCF-00577 Air Conditioning Compressor with Clutch |  |
| Best Value The sweet spot between price and what you get | WFLNHB AC Compressor with Clutch for Subaru Impreza/Forester 2.5L (CO 11227C) |  |
| Best Budget The cheapest option that still gets the job done reliably | waltyotur AC Compressor Replacement for Subaru Impreza/Forester/WRX/WRX STI |  |
| Highest Rated A top-rated pick with lots of positive feedback | FKG AC Compressor and A/C Clutch Assembly for 2008-2014 Subaru Impreza and 2008-2013 Forester (2.5L) |  |
| Most Popular A crowd favorite that many people choose with confidence | RYC Automotive Reman A/C Compressor IG485 with Clutch for Subaru 2.5L |  |
| Best Seller A high-volume bestseller chosen again and again | ILONPA AC Air Conditioning Compressor with Clutch for Subaru 2.5L |  |
1. Subaru A/C Compressor Assembly 73111FG002 (Genuine)
| Manufacturer | Subaru |
|---|---|
| Item model number | 73111FG002 |
| Exterior | Machined |
| Manufacturer Part Number | 73111FG002 |
This genuine Subaru A/C compressor assembly is a factory-quality replacement designed to restore air conditioning performance in compatible Subaru vehicles. It installs in place of the original compressor and is used when the existing unit has failed, seized, or lost cooling capacity. The unit is machined to factory tolerances and carries the manufacturer part number 73111FG002, which helps ensure fitment and compatibility with the intended Subaru applications. Using a genuine assembly simplifies replacement because it arrives as a complete compressor rather than a core or remanufactured unit, reducing the need for additional parts or rebuilding. The practical benefits are reliable fit, expected OEM-style operation, and reduced diagnostic time during installation. Limitations are that fitment is specific to Subaru applications and the component is sold as the compressor only, so users may still need seals, refrigerant, or professional installation to complete the A/C service.
Best for: Buyers who want a factory-quality, direct replacement compressor to restore stock A/C performance in their Subaru and prioritize fit and reliability over aftermarket cost savings.
Less Ideal for: Do-it-yourselfers seeking a low-cost aftermarket substitute or anyone needing a universal or multi-vehicle compressor solution should consider alternatives.
- Genuine Subaru part with factory part number for reliable fitment
- Comes as a complete compressor assembly so no core remanufacture required
- Machined exterior and factory-quality construction for consistent performance
- Sold as the compressor only so additional seals, or refrigerant are not included
Verdict: Choose this genuine Subaru compressor when you need a direct-fit, factory-quality replacement to reliably restore air conditioning performance.
2. AISIN ACCF-00577 Air Conditioning Compressor with Clutch
| Voltage | 12 volts |
|---|---|
| Compressor Type | 10S11C |
| Oil Type | PAG 46 |
| Oil Prefilled (ml) | 150 |
| Grooves (PK) | 4 |
This AISIN ACCF-00577 is a factory-quality replacement A/C compressor sold complete with clutch, pulley, and 150 ml of prefilled PAG 46 oil for direct installation on compatible Subaru models. It is the 10S11C compressor type with a 4-groove pulley and arrives with basic installation aids like a flathead screwdriver and gloves. In real-world use it restores system pressure and cooling quickly after a failed compressor, and the prefilled oil reduces the prep work for a shop or a competent DIYer. The included clutch and pulley save the step of transferring parts from the old unit, which speeds installation and lowers parts mismatch risk. Limitations: this is a model-specific unit, so correct year and production-date fitment must be confirmed, and professional service is recommended for proper refrigerant handling and torque specs. The one-year warranty provides some reassurance but does not replace careful installation and system evacuation and recharge.
Best for: Buyers who prioritize restoring or maintaining strong A/C performance on their Subaru and want a ready-to-install, OEM-quality replacement compressor that minimizes parts swapping and shop labor time.
Less Ideal for: People looking for a universal or multi-vehicle compressor solution or those who prefer a lifetime warranty and extended aftermarket support.
- Direct-replacement design for specified Subaru models simplifies installation.
- Arrives prefilled with 150 ml PAG 46 oil to reduce prep time.
- Includes clutch and 4-groove pulley so no need to transfer parts from the old compressor.
- Comes with basic installation aids and a one-year warranty for added confidence.
- Fitment is model- and production-date specific so verification is required before purchase.
- Requires refrigerant evacuation and recharge by a qualified technician for safe, correct installation.
Verdict: Choose this AISIN compressor if you want a direct-fit, ready-to-install replacement that quickly restores factory-level A/C performance on compatible Subaru models.
3. WFLNHB AC Compressor with Clutch for Subaru Impreza/Forester 2.5L (CO 11227C)
| Voltage | 12 volts |
|---|---|
| Recommended Uses For Product | Air Conditioning |
| Power Source | Corded Electric |
| Additional Features | Silent Operation |
This WFLNHB unit is an aftermarket replacement A/C compressor with clutch intended to restore cooling in compatible Subaru 2.5L models. It ships with oil pre-filled so initial installation does not require adding lubricant, and the manufacturer advises charging refrigerant to about 70–80 percent to avoid excess noise. The compressor is marketed as durable for continuous use and engineered for quieter operation, which is useful if you want a long-lasting fix without a noisy clutch. Typical use is one-for-one replacement during an A/C system repair where the old compressor has failed or seized. Expect straightforward mechanical swap-in when mounting points and fittings match your vehicle, but final system performance depends on proper refrigerant charge and professional evacuation and recharging. This is an economical aftermarket option, though buyers should confirm exact part compatibility and may prefer a factory-quality unit if factory-fit components are a priority.
Best for: A practical buyer repairing A/C on a 2008–2011 Subaru Impreza who wants an affordable, ready-to-install replacement that emphasizes durability and quieter operation.
Less Ideal for: Drivers seeking an exact factory-manufactured compressor or professional shops specifying OEM-sourced parts should consider official Subaru replacements instead.
- Pre-filled with refrigeration oil for easier initial installation
- Integrated clutch included so you replace the whole compressor assembly at once
- Manufacturer notes low-noise design aimed at quieter operation
- Designed specifically to match Subaru 2.5L compressor part numbers for direct replacement fitment
- Requires correct refrigerant fill and proper system service to avoid noise or performance issues
Verdict: Choose this WFLNHB compressor if you want an affordable, pre-oiled replacement that restores A/C function on 2008–2011 Impreza 2.5L models with quieter operation and straightforward installation.
4. waltyotur AC Compressor Replacement for Subaru Impreza/Forester/WRX/WRX STI
| Voltage | 12 volts |
|---|---|
| Recommended Uses For Product | Air Conditioner |
| Power Source | Corded Electric |
| Noise | 70 db |
This waltyotur compressor is a budget-minded aftermarket replacement designed to restore A/C cooling in compatible Subaru models. It installs in place of the factory unit and runs from the vehicle 12 volt system to compress refrigerant and circulate cooling through the HVAC system. Notable features listed include a claimed quiet operation around 70 dB, reinforced housing for improved rigidity, and standard connector and mounting locations for the covered model years. For everyday use it should return cabin cooling and reduce vibration compared with a failed compressor, making it a practical option for owners repairing older Subarus without paying OEM prices. Limitations to expect are typical of aftermarket parts: fit or accessory differences may require minor adjustments during install and long-term durability can vary compared with higher-end replacements. Buyers should confirm the part numbers and vehicle fitment before purchase and be prepared to have refrigerant recovered and the system properly charged by a technician.
Best for: Owners seeking an affordable, direct-replacement compressor to restore A/C function on specified Subaru models who prioritize lower upfront cost over premium OEM parts.
Less Ideal for: Drivers who want guaranteed long-term factory-spec durability or who prefer to only install OEM parts should consider factory replacements or higher-end rebuilt units.
- Designed to fit listed Subaru Impreza, Forester, WRX and WRX STI model years, simplifying replacement
- Operates on standard 12 volt vehicle electrical systems for direct compatibility
- Manufacturer cites quiet operation with lower vibration for improved cabin comfort
- Reinforced compressor housing claimed to improve rigidity and reliable compression
- Aftermarket build quality and long term durability may vary compared with higher-end or factory replacements
Verdict: A cost-focused direct-replacement compressor that restores A/C cooling for the listed Subaru models without the premium of a factory unit.
5. FKG AC Compressor and A/C Clutch Assembly for 2008-2014 Subaru Impreza and 2008-2013 Forester (2.5L)
| Compatible part numbers | 73111FG000 / 73111FG001 / 73111FG002 |
|---|---|
| Compressor type | DKV10R |
| Pulley groove quantity | 4 |
| Manufacturer standard | ISO/TS 16949 certified |
This FKG unit is a complete compressor and clutch assembly designed to replace the factory part on compatible Subaru 2.5L models. It installs in place of the original compressor and is intended for use when the existing AC system has a failed compressor or clutch. Notable features include a four-groove pulley, ISO/TS 16949 production standard, and stated improvements over traditional design weaknesses to enhance reliability. In practice the assembly simplifies repair by combining the compressor and clutch into one unit, reducing labor compared with sourcing separate components. Buyers can expect factory-style fitment and sufficient robustness for regular driving and seasonal AC demands, though compressor replacement still requires proper system evacuation, recharge, and inspection of related components like the condenser and drier. This is a solid option for owners who want a like-for-like replacement that prioritizes durability, but it requires standard AC service procedures and basic mechanical skill or professional installation to ensure long-term operation.
Best for: Someone restoring factory cooling performance on a Subaru 2.5L who values a solid, factory-style replacement that emphasizes manufacturing quality and long-term dependability.
Less Ideal for: If you plan to upgrade the AC system for higher performance cooling or want a purely budget throwaway repair, this factory-style replacement may be more robust and costly than necessary.
- Complete compressor and clutch assembly simplifies replacement and reduces part-matching errors
- Built to ISO/TS 16949 production standards for consistent manufacturing quality
- Four-groove pulley matches factory belt setup for straightforward fitment
- Manufacturer states improvements over traditional weak points aimed at better durability
- Requires professional AC evacuation and recharge; not a DIY plug-and-play for novice owners
Verdict: Buy this FKG assembly if you need a reliable, factory-quality compressor and clutch replacement for your Subaru 2.5L to restore dependable AC performance.
6. RYC Automotive Reman A/C Compressor IG485 with Clutch for Subaru 2.5L
| Included Components | A/C Compressor, Clutch Assembly, Compressor Oil |
|---|---|
| Material Type | Aluminum |
| Model Number | IG485 |
| Power Source | Engine Powered |
This RYC remanufactured A/C compressor is a direct replacement designed to restore air conditioning performance in Subaru 2.5L vehicles. It ships pre-filled with the correct compressor oil and includes the clutch and pulley assembly, which simplifies installation for a DIYer or a technician. The unit is aluminum-bodied and is tested for leaks, noise, and durability before leaving the factory, so it should bring condenser and cabin cooling back to factory-like function. Typical use is a like-for-like swap when the original compressor fails or leaks; because it is remanufactured, it aims to match factory fit and mounting points and reduce installation work. Practical benefits include the included clutch and oil and the vendor testing claim, which reduce parts sourcing and guesswork. Limitations are that reman units can vary in long-term life compared with new compressors and that successful installation still requires correct system evacuation, refrigerant charge, and verifying compatibility with the vehicle HVAC controls.
Best for: Buyers seeking a tested, ready-to-install replacement compressor for a Subaru 2.5L who prioritize documented fit and included components to reduce installation uncertainty.
Less Ideal for: Drivers wanting a brand-new compressor with a fully new internals or those who prefer to replace multiple A/C system components at once should consider other options.
- Pre-filled with the correct amount of compressor oil for simpler installation
- Includes clutch and pulley assembly so fewer additional parts are needed
- Aluminum construction and factory testing for leaks and noise improve reliability
- Sold as a direct-fit remanufactured replacement for the listed Subaru 2.5L applications
- Remanufactured units can have more variability in long-term lifespan compared with new units
Verdict: A tested, ready-to-install remanufactured compressor that restores factory-style A/C performance for Subaru 2.5L models while minimizing parts to source.
7. ILONPA AC Air Conditioning Compressor with Clutch for Subaru 2.5L
| Oil type | RFL-100X |
|---|---|
| Oil prefilled | 130ML |
| Pulley grooves | 4 |
| Pulley diameter | 96 mm |
| Compressor type | DKV10R |
This ILONPA AC compressor with clutch is a direct replacement intended for Subaru 2.5L Impreza and Forester applications and some WRX/STI model years within the stated fitment. It arrives prefilled with 130ml of RFL-100X refrigeration oil and features a 4-groove pulley and a 96 mm pulley diameter, which helps match factory drive characteristics. The unit is made from high-strength aluminum alloy and is claimed to run quietly with reduced vibration, which should make cabin comfort and long-term durability acceptable for daily driving. Typical use is as a like-for-like replacement when the original compressor fails; professional installation and system cleaning are advised to ensure longevity and proper refrigerant charge. Limitations are that correct vehicle, engine and trim verification is critical before purchase since the listing covers a narrow set of turbocharged H4 and non-turbo 2.5L variants, and the buyer must follow proper evacuation and recharge procedures after swapping compressors. Expect straightforward fitment when the part numbers match but plan for professional commissioning to avoid leaks or performance issues.
Best for: A buyer who prioritizes a low-risk, like-for-like replacement for a Subaru 2.5L model and wants a unit that arrives ready to install with OEM-style mounting and pulley specifications.
Less Ideal for: Do not choose this if you need a universal compressor, are working on a different engine or year not listed, or plan to upgrade to a performance-oriented AC system.
- Prefilled with 130ml of refrigeration oil for easier initial installation
- Constructed from high-strength aluminum alloy for durability and lower vibration
- 4-groove pulley and 96 mm pulley diameter to match factory drive characteristics
- Designed specifically for Subaru 2.5L fitments listed, reducing compatibility guesswork
- Fitment is limited to the specific Subaru engines and years listed so it will not suit other variants
Verdict: A ready-to-install, factory-style replacement compressor prefilled with oil that makes a conservative, low-risk swap for the listed Subaru 2.5L models.
Choosing the Right 2008-2011 Subaru Impreza AC Compressor: Key Factors to Consider
Correct Fitment and Mounting Pattern
Mounting pattern and bolt locations must match the 2008-2011 Subaru Impreza engine bay to avoid bracket modifications. A compressor that looks similar but uses different mount points can require custom brackets or welding, which increases labor and risk.
Correct fitment also ensures the compressor pulley lines up with the accessory drive belt. Belt misalignment can cause premature belt wear or noise and may transfer vibration into the system. Confirming the exact year range and engine configuration up front reduces surprises during installation.
Compressor Type and Refrigerant Compatibility
Compressors come in different internal designs such as swash plate, scroll, or piston configurations. For the 2008-2011 Impreza, matching the compressor type specified for the vehicle ensures expected efficiency and proper oil charge behavior.
Equally important is refrigerant compatibility. The compressor must be compatible with the refrigerant the vehicle uses. Using a compressor designed for a different refrigerant can lead to lubrication mismatch, poor cooling, and early failure. Verify the unit supports the car's refrigerant and the correct type and amount of compressor oil.
Clutch, Pulley, and Electrical Connector Match
The AC compressor clutch and pulley must match the Impreza's belt size, offset, and electrical connector to avoid additional parts changes. Some replacement compressors include the clutch assembly while others expect reuse of the original clutch or pulley.
Electrical connectors differ by year and trim; a connector that does not mate with the vehicle harness will require splicing or adapter parts. Ensuring the clutch coil voltage and connector style match simplifies installation and reduces the chance of wiring faults or intermittent operation.
Durability and Build Quality
Durability factors such as material quality, internal tolerances, and manufacturing controls affect compressor longevity. For a daily-driven Impreza, a compressor that resists wear and maintains internal clearances will sustain pressure and cooling performance longer.
Consider whether the compressor uses improved sealing surfaces, hardened shaft materials, or better-bearing designs. Units with clear quality control documentation or manufacturer testing specifications generally offer better long-term value than unknown or poorly documented parts.
Serviceability and Availability of Parts
Ease of service influences repair time and cost. Compressors that allow clutch, pulley, or seal replacement without removing the entire assembly reduce downtime and labor expense for future repairs.
Also consider availability of compatible replacement components like O-rings, shaft seals, and clutch coils. If rebuild parts are common and easy to source, you may be able to repair rather than replace the compressor in the future, which can be more cost effective.
Warranty and Support
A practical warranty protects against premature mechanical failure and indicates confidence from the manufacturer or distributor. Look for warranty terms that cover internal failures and provide clear procedures for claims.
Warranty length should be balanced with exclusions; check whether wear items such as clutches or seals are included. Local technical support or clear installation guidance also reduces the risk of incorrect installation and helps if issues arise after fitting.
Signs Your Impreza Compressor Needs Replacement
Several symptoms point to a failing AC compressor on the 2008-2011 Impreza. Common signs include weak or non-existent cooling while the rest of the system seems intact, grinding or squealing noises from the front of the engine when the AC engages, and visible oil or refrigerant leaks around the compressor body or hose fittings.
You may also notice the compressor clutch failing to engage even though the system shows power at the control. Intermittent operation, sudden loss of pressurization, and frequent cycling can indicate internal wear. Diagnosing these symptoms before replacing the compressor helps confirm the compressor is the root cause rather than a low refrigerant charge or a faulty pressure sensor.
- Lack of cold air when compressor should be running
- Grinding, squealing, or rattling noises from compressor area
- Oil or refrigerant staining around compressor seals
- Compressor clutch not engaging despite power availability
- Excessive cycling or inconsistent system pressure
Preparing for Replacement: What to Inspect First
Before ordering a compressor for your Impreza, inspect the system for refrigerant leaks, check the accumulator or receiver-drier condition, and verify the condenser and expansion device are functioning. Replacing a compressor without addressing these related components increases the chance of immediate failure due to system contamination or moisture.
Record the vehicle's compressor clutch connector type and note belt routing and belt condition. If the vehicle has an aftermarket accessory or different belt size, confirm pulley alignment. Having those details ready helps you pick a replacement that will install cleanly.
- Check condenser and lines for visible damage or obstructions
- Inspect accumulator/receiver-drier and replace if saturated
- Confirm clutch connector style and belt routing
- Note the refrigerant type and oil used in the system
Installation Tips for a Smooth Swap
When replacing the compressor, ensure the system is properly evacuated and charged by a trained technician. Avoid introducing air or moisture; proper vacuuming and using the correct oil amount are essential. If the replacement compressor arrives dry, add the specified oil quantity before starting the system.
Torque mounting bolts to the manufacturer specification and verify pulley alignment with a straightedge. If the replacement does not include the clutch, transfer the original clutch carefully and replace any worn snap rings or fasteners. After installation, run the system and check for leaks, correct engagement, and expected pressure readings.
- Evacuate and vacuum the system thoroughly before charging
- Use the correct type and amount of compressor oil
- Check pulley alignment and torque mount bolts to spec
- Test system pressures and inspect for leaks after install
Cost Considerations and Long-Term Value
Replacement cost for the compressor itself is only part of the ownership equation. Labor, additional parts such as the drier, expansion device, or line O-rings, and the cost of proper evacuation and recharge all affect the overall repair bill. Choosing a compressor with proven durability may cost more upfront but can reduce the chance of repeat repairs.
Consider whether the compressor includes a warranty that reduces out-of-pocket risk and whether rebuild parts are readily available. For many owners, paying a bit more for a unit with better documentation and support delivers better long-term value than the cheapest available option.
- Factor in labor and replacement of associated components
- Cheaper units can lead to repeat repairs and higher lifetime cost
- A clear warranty and good documentation improve long-term value
When to Consider Rebuilding Instead of Replacing
Rebuilding the compressor can be economical if the housing and shaft are in good condition and a quality rebuild kit is available. Rebuilds require technical skill and proper tooling to ensure internal clearances and tolerances are restored. If the clutch or pulley is the only failing item, rebuilding or replacing just those components can be a cost-effective alternative.
However, a rebuild is only advisable when contamination is minimal and the rest of the system is healthy. If the system shows signs of severe contamination, or if the compressor has suffered internal damage that affects core tolerances, a full replacement may be the more reliable choice.
- Rebuild if housing and shaft are undamaged and parts are available
- Rebuilding saves cost when clutch or seals are the only issues
- Avoid rebuilds when system contamination or severe internal wear exists
Still looking for the perfect fit?
Select your Subaru Impreza configuration to see the most relevant AC Compressors recommendations
How We Chose the Best 2008-2011 Subaru Impreza AC Compressor
We focused on criteria that matter specifically to 2008-2011 Subaru Impreza owners and the unique demands of the Impreza air conditioning system. Key evaluation factors included correct vehicle-year fitment and mounting pattern, compressor type and refrigerant compatibility, clutch and pulley assembly matching, overall build quality and materials, and expected service life under typical driving conditions. We also considered ease of installation, availability of replacement parts such as seals and clutch components, and warranty coverage that speaks to manufacturer confidence.Excluded from consideration were compressors that required nonstandard head or bracket modifications, versions that use an incompatible refrigerant, and units lacking clear fitment information for the 2008-2011 Impreza. We prioritized compressors with documented mounting and electrical connector matches and those that either include necessary installation hardware or clearly list compatible OEM components. Finally, we leaned on serviceability factors such as availability of rebuild components and local technical support when choosing which compressors made the shortlist.
Our full evaluation process is outlined in our review methodology.
FAQ
How can I tell if my 2008-2011 Impreza compressor clutch is bad?
If the clutch does not engage when the AC is switched on and the system has power, or if you hear a loud squeal when it tries to engage, the clutch may be failing. Visual inspection for worn friction surfaces or oil contamination can also indicate clutch problems.
Can I replace the compressor myself on an Impreza?
Experienced DIYers can swap the compressor if they have proper tools and understand refrigerant handling rules, but the job requires evacuating and recharging the system and preventing moisture ingress. Many owners choose a qualified technician for safe and compliant service.
Should I always replace the receiver-drier when changing the compressor?
It is usually recommended to replace the receiver-drier or accumulator when replacing the compressor. These components trap moisture and debris, and replacing them reduces the risk of contaminating the new compressor.
What causes a compressor to make a grinding noise on the Impreza?
Grinding often indicates internal bearing or shaft damage. It can result from inadequate lubrication, contamination, or prolonged operation with a failing clutch. Addressing the root cause and replacing the compressor is typically necessary.
How long should a properly installed compressor last in the Impreza?
A well-matched, correctly installed compressor can last many years under normal use, but actual life depends on system maintenance, driving conditions, and whether the rest of the AC system is clean and moisture-free. Regular inspections help spot issues early.
Will an AC compressor replacement fix low cooling immediately?
If low cooling is caused by a failed compressor, replacing it and properly recharging the system usually restores cooling. However, if other components like the condenser or expansion device are faulty, the symptoms may persist until those parts are addressed.
Final Verdict
For the 2008-2011 Subaru Impreza, prioritize a compressor that matches the vehicle's mounting pattern, clutch and pulley specifications, and refrigerant compatibility. Focus on proven build quality, ease of installation, and availability of service parts to reduce the risk of repeat repairs.Balance upfront cost against durability and warranty coverage. When in doubt, verify fitment details and ensure the rest of the AC system is serviced at the same time so your new compressor achieves reliable, long-term cooling performance.
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