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If your Subaru Legacy GT is struggling to blow cold air, the AC compressor is often the most likely culprit. Choosing the right Subaru Legacy GT AC compressor affects cooling performance, cabin comfort, and long-term reliability. A correct-fit, durable compressor reduces the chance of repeat failures and helps the rest of the A/C system last longer.This guide highlights the top shortlisted compressors for the Legacy GT and explains the evaluation criteria we used, including fitment accuracy and mechanical durability. Read on to compare the key features that matter when replacing your vehicle air conditioning compressor and decide which option suits your goals and budget.
Looking for other parts? See all Subaru Legacy parts & accessories.
Top Picks at a Glance
| Best Overall The best all-around choice for most situations | A-Premium Air Conditioner Compressor with Clutch for Subaru Legacy/Outback 2.5L (2013–2019) |  |
| Best Quality Built to a higher standard if you want something more solid | AISIN AC Compressor (ACCF-00517) with 6-Groove Pulley and Clutch |  |
| Best Value The sweet spot between price and what you get | RY AC Compressors AIG399 Remanufactured A/C Compressor with Clutch |  |
| Best Budget The cheapest option that still gets the job done reliably | NewYall A/C Compressor with Clutch for Subaru Legacy/Outback 2.5L & 3.6L (2010–2019) |  |
| Highest Rated A top-rated pick with lots of positive feedback | PHILTOP AC Compressor with Clutch for Subaru Fitments (direct replacement) |  |
| Most Popular A crowd favorite that many people choose with confidence | SCITOO AC Compressor with Clutch for Subaru Legacy / Outback (Fits 2010–2019) |  |
1. A-Premium Air Conditioner Compressor with Clutch for Subaru Legacy/Outback 2.5L (2013–2019)
| Compressor Type | TSE14F |
|---|---|
| Oil Type | PAG46 |
| Oil Prefilled | 150ml (±20ml) |
| Pulley Grooves | 6 |
| Included Components | Clutch |
This A-Premium A/C compressor is a direct-fit replacement unit supplied with the clutch and prefilled PAG46 oil, intended to get a Subaru Legacy or Outback 2.5L back to blowing cold air. Installers will recognize familiar features like a six-groove pulley and a specified 150 ml oil charge, which reduce the guesswork during replacement. The unit is metal-constructed and arrives as a manual-style compressor ready for shop or experienced DIY installation. Practical benefits include a full clutch assembly included so you do not need to reuse a worn clutch, and the prefilled oil helps speed up the install process. Limitations to plan for are that it is a mechanical replacement rather than an upgraded performance unit and proper fitment verification is required before installation because multiple part numbers are listed. The one-year unlimited-mileage parts guarantee covers the item itself but not installation or related labor costs.
Best for: Buyers wanting a reliable, factory-style replacement to restore A/C function on a 2013–2019 Subaru Legacy or Outback 2.5L who value direct-fit parts and straightforward installation.
Less Ideal for: Do not choose this if you want a high-performance or modified cooling solution or if you prefer fully warrantied dealer parts that include labor coverage.
- Includes clutch so you receive a complete compressor assembly
- Prefilled with PAG46 oil (150 ml) to simplify installation
- Six-groove pulley matches common belt setups for direct replacement
- Metal construction intended for durable, long-term service
- Not a performance-upgrade compressor; designed as a factory-style replacement
Verdict: A practical, direct-fit compressor kit that includes the clutch and prefilled oil to quickly restore A/C on 2013–2019 Subaru Legacy and Outback 2.5L models.
2. AISIN AC Compressor (ACCF-00517) with 6-Groove Pulley and Clutch
| Compatibility | Subaru Outback/Legacy 2013–2019 2.5L (H4) |
|---|---|
| Compressor Type | 6ZSE |
| Oil Type | PAG 46 |
| Oil Prefilled | 100±10 ml |
| Voltage | 12 Volts |
This AISIN compressor is a full replacement unit intended to restore or upgrade the A/C system on 2.5L Subaru Legacy and Outback models from 2013 through 2019. It arrives prefilled with PAG 46 oil and includes the clutch and a six-groove pulley, which simplifies installation for shops and experienced DIYers. The package also contains a basic installation manual plus a flathead screwdriver and gloves for initial handling. In use the compressor performs the core job of compressing refrigerant to deliver cabin cooling, and the included clutch assembly means you do not need to swap the old clutch if it is worn. Being a brand with manufacturer support and a one-year mileage-unlimited warranty provides added confidence for performance-focused drivers who need a dependable replacement. Note that this unit fits the H4 2.5L Subaru only and is not compatible with the H6 3.6L engine, so confirm your engine code before purchase.
Best for: Drivers who need a reliable, factory-quality replacement compressor for a 2013–2019 Subaru 2.5L who value a ready-to-install unit that includes the clutch and pulley.
Less Ideal for: Do not choose this if your Subaru has the 3.6L H6 engine or if you need a compressor specifically tuned for extreme performance modifications beyond factory-spec cooling.
- Direct-fit replacement for Subaru Legacy and Outback 2013–2019 2.5L H4 applications
- Arrives prefilled with PAG 46 oil and includes clutch and 6-groove pulley to simplify swap
- Includes basic installation tools and manual for easier handling
- From a recognized automotive supplier and backed by a one-year mileage-unlimited warranty
- Not compatible with the H6 3.6L engine so it is limited to 2.5L H4 models
Verdict: If you drive a 2013–2019 Subaru Legacy or Outback with the 2.5L H4 engine and want a ready-to-install, factory-quality replacement compressor that includes the clutch and pulley, this AISIN unit is a solid choice.
3. RY AC Compressors AIG399 Remanufactured A/C Compressor with Clutch
| Recommended Uses For Product | automotive air conditioning repair and maintenance |
|---|---|
| Power Source | Corded Electric |
| Material Type | Aluminum |
| Included Components | A/C Compressor |
This RY AC AIG399 is a remanufactured automotive A/C compressor designed as a direct replacement unit. It arrives prefilled with the correct oil and includes the clutch and pulley, which simplifies installation and reduces the need to source additional parts. The unit is tested for noise, leaks, and durability and is positioned for routine repair or refresh of the vehicle climate system. In practice it is fitted as a like-for-like swap when the factory compressor fails, restoring compressor-driven cooling without altering system setup. Its aluminum construction helps with thermal performance and weight compared with older cast units. Being remanufactured, it can be a cost-efficient option versus a brand-new compressor but may carry variability in long-term life depending on the remanufacture process. Confirm exact fitment and any necessary O-ring, hose, or bracket differences before installation to avoid extra shop time.
Best for: Buyers who want a straightforward, cost-conscious replacement to restore factory cooling function without upgrading system components.
Less Ideal for: Those seeking a factory-new compressor with the longest possible service life or performance upgrades should consider new or OEM-specific options instead.
- Ships prefilled with the correct amount of refrigerant oil, ready for installation
- Includes clutch and pulley so fewer additional parts are needed
- Tested for noise, leaks, and durability to help ensure basic reliability
- Aluminum construction for improved heat dissipation and corrosion resistance
- Remanufactured unit so long-term life can vary compared with a new compressor
Verdict: A practical remanufactured compressor that includes clutch and pulley to get a Subaru Legacy GT back to working A/C with minimal extra parts or fuss.
4. NewYall A/C Compressor with Clutch for Subaru Legacy/Outback 2.5L & 3.6L (2010–2019)
| Brand | NewYall |
|---|---|
| Model | 73lll-AJ000 |
| Compatible engines | 2.5L, 3.6L |
| Applicable years | 2010-2019 |
This NewYall A/C compressor replaces a failed compressor and clutch assembly on Subaru Legacy and Outback 2.5L and 3.6L cars from 2010 through 2019. It installs in place of the factory unit to restore cooling and is intended for use with the vehicle s existing A/C system and fittings. Notable features include a built-in clutch and an application-specific fit for the listed engine configurations, which simplifies installation compared with universal units. For a budget-conscious buyer it delivers a straightforward way to get the system blowing cold again without paying for a dealer or premium-brand part. Expect typical benefits like restored cabin cooling and compatibility with existing lines; however you should factor in proper system evacuation and recharge during installation and verify clutch coil electrical compatibility before mounting. The part is a practical choice for owners prioritizing function and value over brand-name assurance.
Best for: Buyers who need an affordable, vehicle-specific compressor to get a Subaru Legacy or Outback A/C system working again and who are comfortable arranging a professional recharge or doing mechanical installation themselves.
Less Ideal for: If you prefer parts from established premium aftermarket brands, factory-authorized replacements, or need included warranty support, this budget-focused option may not meet expectations.
- Vehicle-specific fit for Subaru Legacy and Outback 2.5L and 3.6L (2010–2019) simplifies replacement.
- Includes the compressor clutch integrated into the assembly for a one-piece swap.
- Restores factory A/C function without needing a custom or universal unit, saving installation time.
- Compact package that matches original mounting points and pulley orientation for straightforward alignment.
- No warranty information provided in the product listing.
- Buyer must perform or pay for system evacuation and refrigerant recharge after installation.
- Limited third-party testing or brand reputation compared with long-established aftermarket names.
Verdict: A cost-conscious, vehicle-specific compressor and clutch assembly that gets a Subaru Legacy or Outback A/C system back to cooling without the premium price.
5. PHILTOP AC Compressor with Clutch for Subaru Fitments (direct replacement)
| Voltage | 12 volts |
|---|---|
| Noise | 72 db |
| Maximum Pressure | 15 bar |
| Included Components | 1 x A/C Compressor with Clutch |
| Material Type | Aluminum alloy housing, Cast Iron pulley, Stainless steel valve plate |
This PHILTOP AC compressor is a direct-replacement unit intended to restore air conditioning performance on compatible Subaru models. It ships pre-filled with PAG 46 oil and includes the clutch, so installation is straightforward for a professional or experienced DIYer replacing a failed compressor. The unit uses an aluminum-alloy housing with a cast-iron pulley and stainless steel valve plate for durability, and the manufacturer reports noise below 72 dB and a maximum pressure rating of 15 bar, which supports steady cooling and defogging. Because it replaces several manufacturer part numbers, it can match factory fit on the listed Legacy and Outback engines when the part number aligns. Practical benefits include reduced downtime thanks to the pre-filled oil and bundled clutch, plus materials intended to resist corrosion. Important limitations are that compatibility is specific to the listed Subaru model years and engines so buyers must confirm part numbers, and long-term reliability will depend on correct installation and system condition rather than the compressor alone.
Best for: Buyers who prioritize a dependable, factory-style replacement for a worn or failed compressor on the specified Subaru Legacy/Outback/Impreza models and who will verify part-number match before installing.
Less Ideal for: Drivers looking for a universal or cross-platform aftermarket compressor or those who do not want to check exact fitment and part numbers prior to purchase.
- Direct-replacement design that matches multiple Subaru part numbers for easier fitment checks
- Includes clutch and arrives pre-filled with PAG 46 oil to simplify installation
- Durable materials: aluminum alloy housing, cast iron pulley, and stainless steel valve plate
- Low reported operating noise under 72 dB for quieter cabin operation
- Compatibility limited to the specific Subaru model years and engine variations listed, so it is not a universal fit
Verdict: Choose this PHILTOP compressor when you need a ready-to-install, factory-replacement unit that restores reliable cooling for the listed Subaru models.
6. SCITOO AC Compressor with Clutch for Subaru Legacy / Outback (Fits 2010–2019)
| Compressor Type | TSE14C |
|---|---|
| Pulley Grooves | 6 |
| Oil Type | PAG46 |
| Clutch Included | Yes |
This SCITOO A/C compressor is a replacement unit built to fit Subaru Legacy and Outback 2.5L and 3.6L model years indicated in the listing and comes precharged with PAG46 oil and a clutch installed. It installs like a standard compressor replacement and is intended for use when the factory unit fails or leaks. Notable features include a TSE14C compressor core, a six-groove pulley, and a claimed operating noise of 72 dB or less for quieter cabin operation. In practice the prefilled oil and included clutch save a step at installation, and the manufacturer recommends flushing the system beforehand to avoid contamination. The compressor promises rapid cooling once the refrigerant is added and the system is evacuated and recharged to the recommended level. Limitations are typical of aftermarket compressors: you must confirm pulley groove count, refrigerant type and year fitment before buying, and o-rings or other small fittings are not supplied so expect to source those during the job.
Best for: Buyers who want a like-for-like replacement that arrives ready to install and value quiet, fast-cooling performance backed by existing customer reviews.
Less Ideal for: People seeking a complete installation kit or aftermarket upgrades beyond factory-style performance should consider units that include fittings and full accessory kits.
- Prefilled with PAG46 oil and includes clutch for quicker installation
- Designed to match Subaru Legacy and Outback specified model years and engine sizes
- Six-groove pulley and TSE14C core mirror common factory configurations
- Manufacturer claims low operating noise (≤72 dB) for quieter performance
- Does not include new o-rings or additional installation hardware
- Requires verification of pulley grooves and exact year fitment before purchase
Verdict: A practical, quiet direct-replacement compressor for Subaru Legacy and Outback owners who want a ready-to-install unit that restores factory-style cooling quickly.
Choosing the Right Subaru Legacy GT AC Compressor: Key Factors to Consider
Fitment and Compatibility
Correct fitment is the first priority for Subaru Legacy GT owners. A compressor that matches the vehicle's mounting points, pulley diameter, electrical connector, and refrigerant port locations reduces installation time and prevents interference with adjacent components.
Compatibility also includes clutch engagement voltage and pulley offset. Mismatched clutch or pulley can cause drive-belt misalignment or intermittent engagement that leads to premature wear. Double-check whether the compressor is intended for the Legacy GT configuration to avoid returned parts and additional labor.
Refrigerant and Oil Type
Using the correct refrigerant and compressor oil is critical for long-term performance. The Legacy GT system requires a specific refrigerant type and oil viscosity; installing a compressor filled with the wrong oil or that is contaminated can lead to poor lubrication and internal scoring.
When replacing the compressor, factor in whether the unit is shipped pre-filled, requires oil top-up, or needs system evacuation and recharge by a certified technician. Proper oil charge and correct refrigerant quantity directly affect cooling efficiency and compressor lifespan.
Clutch and Pulley Quality
The AC compressor clutch and pulley are wear items that affect engagement consistency and belt life. A clutch that drags or fails to disengage properly will create heat and increase load on the engine accessory drive.
Inspect clutch construction, bearing quality, and whether the compressor includes a new clutch or requires reusing the old one. A replacement compressor that includes a matched clutch and well-sealed bearing assembly reduces the risk of noise and premature failure in the Legacy GT.
Remanufacturing and Testing Standards
Remanufactured compressors vary widely in quality. Units that undergo thorough disassembly, cleaning, replacement of wear components, and bench testing typically offer better reliability than minimally rebuilt cores.
Look for compressors with documented testing protocols such as pressure testing, spin testing, and leak inspection. Higher remanufacturing standards reduce the chance of early failure and contamination of the Subaru Legacy GT A/C system.
Warranty and Coverage
Warranty terms indicate the supplier's confidence in the compressor. For Subaru Legacy GT owners, longer or more comprehensive warranties provide protection against early mechanical failure and unexpected defects.
Consider whether the warranty covers clutch wear, bearing failure, and is transferable if you sell the vehicle. Also check for conditions that void coverage, such as prior system contamination or installation without proper evacuation and filter replacement.
Serviceability and Installation Requirements
Some compressors require additional parts or procedures at installation. For example, the system may need a new accumulator, expansion device, or a thorough flush if the old compressor failed catastrophically.
Consider whether your installer can perform a complete evacuation, vacuum hold test, and correct refrigerant charge. Ease of installation, clear instructions, and availability of replacement parts simplify repairs and reduce labor costs for Legacy GT owners.
Signs Your Subaru Legacy GT Compressor Needs Replacing
The compressor often gives warning signs before a complete breakdown. Common indicators include reduced cooling output, strange noises from the engine bay when A/C is engaged, or intermittent clutch engagement where the compressor cycles on and off frequently. Pay attention if cooling performance drops noticeably at idle or low speeds.
If you notice an oil leak around the compressor or a burning smell when the A/C is running, these are signs of internal seal or clutch issues. Early recognition of symptoms can prevent debris from circulating through the system and causing broader damage to the condenser, evaporator, or expansion device.
- Diminished cold airflow at all fan speeds
- Grinding or squealing noises from the compressor area
- A/C only cools intermittently or cycles rapidly
- Visible oil residue or refrigerant dye near compressor fittings
- Burning odors when the A/C clutch engages
Preparing the Vehicle for Compressor Replacement
Before replacing the compressor on a Legacy GT, prepare the system to minimize contamination and ensure proper reassembly. That includes recovering refrigerant with certified equipment, removing the old compressor carefully, and inspecting the condenser and evaporator for signs of debris or oil contamination.
Replace the receiver-drier or accumulator and the expansion device as recommended, and flush the system if the old compressor failed catastrophically. Confirm belt alignment and tension after installing the new compressor to prevent premature wear on the new clutch and pulley.
- Recover refrigerant with proper equipment
- Inspect condenser and evaporator for contamination
- Replace receiver-drier/accumulator and expansion device when necessary
- Vacuum and hold test the system before recharge
- Check belt alignment and tension after installation
Common Compressor Failure Modes and Causes
Compressor failures often result from bearing wear, clutch burn-up, or internal contamination. Bearings can wear over time, causing grinding noises and increased load on the accessory drive. Clutch failure typically presents as slipping or non-engagement, which prevents the compressor from pumping refrigerant.
Contamination from metal debris or excessive moisture can score internal components and clog the expansion device. Electrical issues such as a faulty clutch coil or connector can also prevent compressor engagement even when the rest of the A/C system is sound.
- Bearing wear leading to grinding or seizure
- Clutch coil or connector electrical failure
- Internal damage from metal debris or moisture
- Lubrication failure due to incorrect oil type or quantity
Installation Tips to Avoid Repeat Failures
Proper installation technique reduces the likelihood of repeat compressor failure. Always evacuate and vacuum the system for the recommended duration to remove moisture and air, then charge the correct refrigerant amount to the vehicle specification.
Use a filter-drier replacement and consider flushing the system after a catastrophic failure. Tighten fittings to the specified torque and replace any worn belt components. Finally, run the system and verify pressures and temperatures at multiple engine speeds to confirm correct operation.
- Evacuate and vacuum the system thoroughly
- Install a new filter-drier or accumulator
- Flush the system if metal debris was present
- Torque fittings to spec and verify belt condition
- Confirm pressures and cooling performance after recharge
Still looking for the perfect fit?
Select your Subaru Legacy configuration to see the most relevant AC Compressors recommendations
How We Chose the Best Subaru Legacy GT AC Compressor
To assemble this list we applied vehicle-specific fitment filters and practical durability criteria tailored to Subaru Legacy GT owners. We prioritized compressors that match the Legacy GT mechanical and electrical interfaces, including pulley size, clutch engagement voltage, and refrigerant routing compatibility. Reliability factors included bearing design, factory tolerances, and known service-life characteristics for compressors used in similar Subaru applications.We evaluated each candidate on build quality, warranty coverage, remanufacturing standards or OEM-equivalent specifications, and whether the unit required additional parts such as an orifice tube, accumulator, or receiver-drier replacement. Ease of installation and availability of clear installation documentation were also considered because correct installation reduces contamination risk.Exclusions: units with unclear Legacy GT fitment, compressors lacking clutch or pulley compatibility, and options with no documented remanufacturing or testing process were excluded. The resulting picks emphasize correct fit, mechanical robustness, and practical serviceability for Subaru Legacy GT owners.
Our full evaluation process is outlined in our review methodology.
FAQ
How long does an AC compressor usually last on a Subaru Legacy GT?
Lifespan varies depending on use and maintenance. Many compressors last over 10 years with proper care, while others fail earlier if contaminated, starved of oil, or subjected to frequent clutch cycling.
Can I replace only the clutch instead of the whole compressor?
Sometimes the clutch can be replaced separately, but compatibility and the condition of internal components determine whether this is sensible. If the compressor has internal wear or contamination, replacing the whole unit is usually safer.
Will a failed compressor damage other parts of my Legacy GT A/C system?
Yes. A catastrophic compressor failure can send metal debris through the system and clog the expansion device or damage the condenser and evaporator. Flushing and replacing the receiver-drier/accumulator is often necessary after a failure.
What are common noises that indicate compressor problems?
Grinding, squealing, or knocking from the compressor area often point to bearing or internal damage. A high-pitched squeal at engagement may indicate clutch slippage or a misaligned pulley.
Do I need professional equipment to replace the compressor?
Yes. Proper refrigerant recovery, system vacuum, and recharge require certified equipment and training. Incorrect handling can harm the system or violate local refrigerant handling regulations.
Should I change the refrigerant oil when replacing the compressor?
Yes. The correct type and quantity of compressor oil should be used. When replacing the compressor, topping up or replacing the oil per vehicle specifications helps ensure proper lubrication and longevity.
Final Verdict
When replacing the AC compressor on a Subaru Legacy GT, prioritize correct fitment, clutch and pulley compatibility, and remanufacturing or testing standards. These factors reduce the likelihood of installation problems and repeat failures.Balance warranty coverage and serviceability with the condition of the rest of the A/C system. If the old compressor failed catastrophically, plan for system flushing and replacement of the filter-drier or expansion device. Choosing a correctly specified, well-tested compressor helps restore reliable cooling and minimizes the risk of additional repairs.
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