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Changing or upgrading the transmission pan on your Subaru Impreza can simplify routine fluid service and reduce the chance of leaks that lead to expensive repairs. The right transmission pan affects access for drain or fluid changes, long-term corrosion resistance, and compatibility with factory sensors or mounting points.This guide covers our shortlist of the top options for the Subaru Impreza, focusing on pans that balance fitment, sealing reliability, and serviceability. We'll summarize why each pan made the list and explain the practical criteria you should consider when choosing a pan for your Impreza before the product details.
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 | femjork Transmission Oil Pan 31390AA170 for Subaru CVT Models |  |
| Best Quality Built to a higher standard if you want something more solid | Dorman Transmission Oil Pan 265-859 for Select Subaru Models |  |
| Best Value The sweet spot between price and what you get | YHTAUTO Replacement Lower Transmission Oil Pan for Subaru (select models) |  |
| Best Budget The cheapest option that still gets the job done reliably | maXpeedingrods Transmission Oil Pan, Direct-Fit Replacement for Select Subaru Models |  |
| Highest Rated A top-rated pick with lots of positive feedback | A-Premium Transmission Oil Pan with Drain Plug for Subaru 4-Speed Automatic (select models) |  |
| Most Popular A crowd favorite that many people choose with confidence | Riyhch Transmission Oil Pan Kit with Gasket and Filter for Subaru 2.0/2.5L (2005–2012) |  |
1. femjork Transmission Oil Pan 31390AA170 for Subaru CVT Models
| Manufacturer | femjork |
|---|---|
| Model | Transmission Oil Pan |
| Manufacturer Part Number | 31390AA170 265-910 |
| Compatible Vehicles | Select Subaru CVT models 2012–2021 as listed |
This femjork transmission oil pan is a direct-fit replacement for many Subaru models equipped with CVT gearboxes, including Impreza, Forester, Outback, Legacy, and Crosstrek years listed by the manufacturer. It is intended to be used when the original pan is damaged, leaking, or being replaced during transmission service. The pan is painted and supplied with the manufacturer part number 31390AA170 for straightforward identification. For routine DIY or shop-level repairs the pan provides the basic function of containing transmission fluid and providing a sealed mounting surface for the transmission filter and drain. Expect a simple swap that restores containment and prevents leaks, though this is a like-for-like replacement rather than an upgraded performance or capacity part. Fitment is limited to the CVT variants and the model years specified, so confirm vehicle compatibility before buying. Overall it is a practical, economical option for balanced buyers who need a reliable factory-style replacement instead of a premium aftermarket upgrade.
Best for: Buyers who want a straightforward, cost-conscious factory-quality replacement pan for scheduled service or to stop leaks on CVT Subaru models and prioritize correct fit and ease of installation.
Less Ideal for: Drivers seeking performance upgrades, extra fluid capacity, or improved cooling should consider aftermarket pans designed specifically for those goals instead of this direct-replacement unit.
- Factory-style replacement for CVT-equipped Subaru models listed
- Painted exterior helps resist surface corrosion
- Clear manufacturer part number for easy verification of fitment
- Not an upgraded or reinforced pan so no added cooling or capacity benefits
Verdict: A practical, factory-style replacement pan for CVT Subaru models when you need a reliable, no-frills repair part.
2. Dorman Transmission Oil Pan 265-859 for Select Subaru Models
| Material | Steel |
|---|---|
| Included Components | Transmission Pan |
| Unit Count | 1 Count |
| Item Type Name | Automatic Transmission Oil Pan for Select Subaru Models |
This Dorman transmission oil pan is a direct replacement intended to restore a damaged or corroded factory pan on compatible Subaru vehicles. Made of steel and offered as a single-piece replacement, it installs in place of the original pan to provide a leak-free sump for the automatic transmission. Typical use is as a repair part during transmission service or after impact damage; it is useful for DIY mechanics and shops that need a cost-effective replacement without changing other transmission components. The listing notes try-on testing to help ensure fitment for specific model years, and Dorman's long aftermarket experience suggests consistent manufacturing and fit. The pan is a basic, no-frills component so you should not expect integrated features like a drain plug, magnetic debris trap, or upgraded gasket hardware unless specified by your vehicle fitment notes. For performance-minded owners, this part restores reliable fluid containment but does not increase cooling or capacity over the stock pan.
Best for: Owners and independent mechanics who need a reliable, factory-style replacement pan to restore transmission sealing after damage or corrosion, and who prioritize correct fit and durability over performance upgrades.
Less Ideal for: Enthusiasts looking for performance upgrades like increased oil capacity, integrated cooling fins, or built-in magnetic debris traps should consider aftermarket upgraded pans instead.
- Direct-fit replacement matched to factory pan geometry for trouble-free installation
- Steel construction provides durable, corrosion-resistant service compared with heavily corroded originals
- Try-on testing and brand experience increase the likelihood of correct fitment for listed Subaru models
- Does not list integrated drain plug or magnetic filter features which some upgraded pans include
Verdict: Choose this Dorman pan when you want a durable, factory-fit steel replacement to restore proper transmission fluid containment on the specified Subaru models.
3. YHTAUTO Replacement Lower Transmission Oil Pan for Subaru (select models)
| Material | Stainless Steel |
|---|---|
| Liquid Volume | 2.5 Liters |
| Specific Uses For Product | Transmission Lubrication and Maintenance |
| Manufacturer Part Number | YHTOP0245 |
| OEM Part Number | 31390-AA081, 31390AA081, 265-859, 265859 |
This YHTAUTO lower transmission oil pan is a direct replacement-style pan made from stainless steel for select Subaru automatic-transmission models. It installs in place of the factory pan to restore a solid, leak-free sump after damage or corrosion; the pan includes a drain plug for easier fluid changes but does not include a gasket or seal so you will need to fit a new gasket during installation. It is sized and drilled to match the factory bolt pattern and holds roughly 2.5 liters of fluid, making it practical for routine service and midlife repairs. Stainless construction improves resistance to rust compared with stamped steel and can better withstand road debris in everyday driving. Note that buyers should confirm exact model year and transmission type before ordering and budget for a new gasket or sealing compound and proper torqueing of the 20 bolts to avoid leaks.
Best for: Buyers looking to repair or replace a damaged transmission pan on a Subaru and who prioritize a durable, rust-resistant replacement that simplifies fluid changes.
Less Ideal for: If you want a complete plug-and-play kit with gasket and hardware included or need compatibility beyond the listed Subaru automatic models, this product is not the best choice.
- Stainless steel construction resists corrosion better than stamped steel pans
- Includes a drain plug for easier fluid changes and maintenance
- Made to match factory bolt pattern for direct fit on specified Subaru automatic transmissions
- Holds approximately 2.5 liters, suitable for routine service top-offs and changes
- Does not include a gasket or seal, which must be purchased and installed separately
- May require careful bolt torque sequence to prevent leaks due to thin pan flange
Verdict: Choose this stainless steel replacement pan to restore a durable, corrosion-resistant transmission sump and make future fluid changes simpler on compatible Subaru automatic models.
4. maXpeedingrods Transmission Oil Pan, Direct-Fit Replacement for Select Subaru Models
| Manufacturer | maXpeedingrods |
|---|---|
| Manufacturer Part Number | EH89AK |
| Fitment Reference Part Numbers | 31390AA081, 265859 |
This transmission oil pan is a straightforward, no-frills replacement for compatible Subaru transmissions. Made from stamped steel, it provides a durable substitute for a damaged or leaking factory pan and is offered as a direct-fit part to simplify installation without modifications. Typical use is to swap a corroded or dented pan during transmission service or after a leak; the pan accepts factory drain and mounting locations so most DIYers or independent shops can install it with basic hand tools. Notable features include the premium steel construction and explicit fitment to multiple Subaru model years and engine types, which reduces the need to hunt for vehicle-specific variants. The practical benefits are clear: lower cost than dealer parts, quick turnaround for repairs, and a robust pan that resists minor impacts. Limitations are that it does not appear to include a replacement gasket or hardware in the listing and it is a basic pan rather than an upgraded capacity or finned performance design, so it is best for routine replacement rather than performance cooling upgrades.
Best for: Buyers looking for an affordable, reliable replacement pan to repair leaks or replace a damaged unit on supported Subaru models and who prioritize cost and simple installation.
Less Ideal for: Shoppers seeking upgraded cooling, extra fluid capacity, or a complete hardware and gasket kit should consider alternative performance or complete replacement assemblies.
- Direct-fit design for specified Subaru model years simplifies installation
- Stamped steel construction offers solid durability and impact resistance
- Covers multiple Subaru models and known part numbers for easier matching
- Priced for budget-conscious buyers seeking a functional factory-replacement pan
- Listing does not specify included gasket or mounting hardware
- Not designed as a performance or high-capacity cooling pan
Verdict: A cost-effective, direct-fit steel replacement pan that gets a leaking or damaged Subaru transmission back to service without the premium price of dealer parts.
5. A-Premium Transmission Oil Pan with Drain Plug for Subaru 4-Speed Automatic (select models)
| Fit Type | Vehicle Specific |
|---|---|
| OEM Part Number | 31390-AA081, 31390AA081, 265-859, 265859 |
| Material | Steel |
| Drain Plug | Included |
| Condition | Brand New |
This transmission oil pan replaces the factory pan on compatible Subaru models with a 4-speed automatic transmission to stop leaks and restore proper fluid level management. Made from steel with a corrosion-resistant finish and a factory-style sump design, it installs in place of the original pan and includes a drain plug for easier fluid changes. Typical use is as a direct replacement when the original pan is damaged, leaking, or corroded; it can also be fitted during routine transmission service to avoid future leaks. The vehicle-specific fit and included drain plug reduce installation fuss, while the steel construction balances durability and cost. It does not include a gasket so you will need a proper sealant or replacement gasket at installation, and professional installation is recommended if rusted bolts or restricted access complicate fitment. The manufacturer backs the part with a one-year unlimited-mileage guarantee for added confidence in longevity.
Best for: Buyers who prioritize a reliable, factory-style replacement to stop leaks and maintain transmission fluid management on compatible Subaru vehicles and who prefer a durable steel pan backed by a parts guarantee.
Less Ideal for: If you want a lightweight aftermarket performance pan or a unitized pan with integrated features beyond a drain plug, consider other upgraded options.
- Vehicle-specific fit for compatible Subaru 4-speed automatic applications
- Steel construction with corrosion-resistant finish for durability
- Includes drain plug to simplify transmission fluid changes
- Direct replacement design intended to address leaks and low fluid issues
- Gasket is not included so a separate seal or gasket purchase is required
Verdict: A practical, vehicle-specific steel replacement pan with a drain plug that reliably stops leaks and simplifies fluid changes for Subaru models with a 4-speed automatic transmission.
6. Riyhch Transmission Oil Pan Kit with Gasket and Filter for Subaru 2.0/2.5L (2005–2012)
| Compatible engines | 2.0L and 2.5L |
|---|---|
| Included parts | Oil pan, pan gasket, automatic transmission filter |
| Exterior | Machined |
| Manufacturer part numbers | 31728AA091, 31390AA081, 31728AA130 |
This kit supplies a direct-replacement transmission oil pan, matching gasket, and transmission filter intended for Subaru 4-speed automatic transmissions in compatible Impreza, Forester, Outback, and Legacy models. Installers will find it covers the three main wear items you typically replace during a fluid service: the pan (machined finish), the gasket to seal the pan, and a disposable filter to catch metal debris and contaminants. For DIY mechanics or independent shops this simplifies a drain-and-service job because you replace the filter and gasket at the same time rather than sourcing parts separately. The machined pan should fit and seal like a factory replacement when matched to the listed OEM part numbers, but buyers must verify model year and transmission variant before ordering. Expect a basic fit-and-forget replacement rather than any performance upgrade; the kit does not include hardware like new pan bolts or transmission fluid, so plan for those items during service.
Best for: Buyers who prioritize reducing risk by choosing a single kit that matches factory part numbers and simplifies a transmission fluid service on compatible Subaru models.
Less Ideal for: Anyone seeking performance upgrades or specialty pans with added capacity or baffling should look at aftermarket performance-focused options instead.
- Complete kit includes pan, gasket, and transmission filter so you replace all service items in one purchase
- Machined exterior pan designed to match factory appearance and sealing surfaces
- Lists compatible OEM part numbers to simplify verifying fitment for specific Subaru transmissions
- Does not include pan bolts or transmission fluid so those must be sourced separately before service
Verdict: A practical, factory-replacement style pan-and-filter kit that removes fitment guesswork for Subaru owners wanting a low-risk transmission service solution.
Choosing the Right Subaru Impreza Transmission Pan: Key Factors to Consider
Fitment and Bolt Pattern
Correct fitment is the first priority because even small differences in bolt pattern, flange shape, or sensor locations will prevent a proper seal and can leave you with a nonfunctional pan. Confirm the pan is specified for the Subaru Impreza transmission variant you have to ensure bolt holes line up and there is clearance around nearby components.
Fitment also determines whether factory sensors and drains align without modification. A pan that fits precisely reduces installation time, avoids the need for adapter plates, and preserves factory mounting points for the transmission fluid temperature sensor or other fittings.
Sealing Surface and Gasket Compatibility
The mating surface quality and gasket strategy directly affect leak resistance. Look for pans with a smooth, machined flange that compresses evenly with an appropriate gasket type, whether a preformed rubber gasket, a molded silicone seal, or a traditional paper gasket.
Consider whether the pan requires a specific replacement transmission pan gasket or if it can use the factory gasket. Some aftermarket pans need a dedicated gasket and sealant; others are designed to accept original gaskets. Proper gasket choice and consistent bolt torque are crucial to prevent transmission pan leaks on the Impreza.
Drain Features and Service Access
A built-in drain plug or well-placed drain port makes routine transmission fluid changes faster and cleaner. Many owners value a pan with a captive drain plug or magnetic plug that simplifies fluid removal without dropping the entire pan.
Also evaluate how easy it is to drop the transmission pan for filter access and whether the pan shape allows working space under the vehicle. Pans that allow partial lowering for fluid catch and filter inspection reduce mess and service time when performing a transmission fluid change.
Material and Corrosion Resistance
Transmission pans are commonly stamped steel, aluminum, or composite. Material affects weight, heat dissipation, and long-term corrosion resistance. For Impreza owners in salt-prone or coastal areas, prioritize pans with corrosion-resistant coatings or aluminum construction to avoid rusted bolt threads and flange degradation.
Consider how the material handles road debris impacts. Heavier-gauge steel can resist denting but may rust over time without protective coatings. Aluminum offers good corrosion resistance and heat transfer but can be more easily dented from road strikes.
Capacity, Cooling, and Added Functionality
Some pans increase fluid capacity slightly or incorporate features that aid cooling, such as fins or extended surface area. Additional fluid capacity can slightly reduce operating temperature and extend service intervals, though the design must still fit within the Impreza's underbody clearances.
Other functional additions include magnetic drain plugs for metal particle capture and integrated baffles that help prevent sloshing during vehicle pitch and cornering. Evaluate whether these features are beneficial for your driving habits and whether they come at the expense of ground clearance.
Installation and Torque Requirements
Installation considerations include how the pan mounts, whether new hardware or torque specs are required, and if the pan design requires special shims or thread repair. Ensure the pan allows standard torque procedures and that you can access bolt locations with common tools.
Review whether the pan needs a specific transmission pan torque specs to avoid warping the flange or causing leaks. Some pans recommend a torque sequence and precise inch-pound values to ensure even compression of the gasket and prevent transmission pan leak issues after installation.
When To Replace Your Transmission Pan
Routine replacement is uncommon, but you should consider a new pan if you see persistent transmission pan leak spots, significant corrosion, or physical damage such as dents that affect fluid capacity or sealing. Small leaks that reappear after gasket replacement can indicate a warped or pitted flange that warrants pan replacement.
Another time to replace the pan is when upgrading to a pan with a drain plug or magnetic plug to make future fluid changes easier. If you drop the pan and discover major sludge or metal debris, replacing the pan while servicing the filter can be a sensible preventive measure.
- Visible fluid on the driveway or around the pan flange
- Corroded bolt threads or a pitted sealing surface
- Upgrading for serviceability features like a drain plug
Preparing for Installation on the Impreza
Before starting, gather the proper replacement transmission pan gasket, a torque wrench with the correct range, a fluid drain catch, new pan bolts if recommended, and any sealant specified by the pan manufacturer. Park on level ground, secure the vehicle, and follow safe jacking and support procedures.
Clean the mating surfaces thoroughly and inspect the transmission housing flange for damage. If bolt threads are corroded, repair or replace them before installing the new pan. Follow the manufacturer torque sequence and torque values to avoid uneven flange compression that can cause a transmission pan leak.
- Have the correct gasket and any required sealant ready
- Use a torque wrench and follow the recommended sequence
- Replace corroded bolts or threads before final assembly
Benefits of a Drain Plug and Magnetic Plug
A drain plug allows for quicker fluid removal without fully dropping the pan, minimizing fluid spillage and reducing time for a transmission fluid change. Magnetic drain plugs or magnets in the pan capture ferrous particles, giving an early warning about internal wear and helping protect the transmission pump and valve body from metallic debris.
When selecting a pan with a drain plug for the Impreza, ensure the plug location is accessible with the vehicle's ground clearance and that it threads into a reinforced boss to resist cross-threading during service.
- Faster, cleaner fluid changes
- Metal particle capture provides wear insight
- Requires accessible drain location given ground clearance
Addressing Leaks: Gasket, Bolt Torque, Or Pan Damage
If you notice a transmission pan leak, first verify bolt torque and pattern. Over-tightening or uneven tightening can distort the pan flange and cause seepage. Use the correct torque values and sequence for the Impreza to achieve an even seal.
If torque and a new gasket do not stop the leak, inspect the flange for warping, pitting, or damage from road debris. In many cases a replacement pan with a proper sealing surface is the most reliable fix to eliminate recurring transmission pan leaks.
- Retorque bolts to specified values before assuming gasket failure
- Inspect flange for visible damage if leaks persist
- Consider replacing pan if the sealing surface is compromised
Maintaining Clearance and Avoiding Damage
Some aftermarket pans add depth for increased capacity or drain access, which can reduce ground clearance and increase the risk of impact from road debris. Measure the additional depth and consider how you use the Impreza; lower vehicles or those driven on rough roads may need a shallower profile to avoid frequent strikes.
If you routinely encounter debris or off-pavement conditions, prioritize pans with reinforced stamping or skid-friendly shapes that better resist dents while still offering service features.
- Compare added depth against current ground clearance
- Prefer reinforced shapes for challenging road conditions
- Avoid large-capacity pans if clearance is already limited
How We Chose the Best Subaru Impreza Transmission Pan
We focused on features and specifications that matter for Subaru Impreza owners when selecting a transmission pan. Our editorial filters prioritized correct fitment to Impreza transmission housings, robust sealing interfaces that reduce the risk of leaks, and designs that improve serviceability such as integrated drain plugs and clear access for fluid changes. Corrosion resistance and material quality were assessed to determine long-term durability in wet and salty road conditions.We also evaluated pans for compatibility with factory sensors and bolt patterns to avoid fitment issues during installation. Ease of installation and the potential to use existing gaskets or require an aftermarket gasket were factored in. Weight and added clearance under the vehicle were reviewed where relevant for ground clearance concerns.Excluded items included pans not intended for the Impreza or those lacking documented mounting compatibility. We did not include pans that required extensive transmission modification or that removed provisions for factory sensors. Final choices balanced real-world service convenience, sealing reliability, and fitment certainty.
Our full evaluation process is outlined in our review methodology.
FAQ
How often should I inspect the transmission pan on my Subaru Impreza?
Inspect the pan during every scheduled fluid change and visually check for leaks or corrosion during routine maintenance. A quick check every oil change or at least twice a year helps catch small transmission pan leaks before they worsen.
Can I replace the gasket without removing the transmission pan permanently?
You will typically need to drop the pan to replace the gasket and inspect the filter and interior. Some service techniques allow loosening and tilting the pan to change fluid, but a full gasket replacement normally requires removing the pan for proper cleaning and surface inspection.
Is a drain plug necessary for regular maintenance on the Impreza?
A drain plug is not strictly necessary but is very practical. It simplifies fluid changes and reduces mess. If you plan to perform frequent DIY fluid changes, a pan with a drain plug or magnetic plug is a useful upgrade to speed service.
What should I do if my transmission pan is dented from road debris?
Minor dents that do not affect the flange seal may be tolerable, but dents that change the pan shape or cause uneven sealing indicate replacement. Also watch for reduced fluid capacity or areas where debris could concentrate and accelerate wear; replacement is often the safest choice.
Will an aftermarket pan change my transmission performance?
Most pans do not affect shifting performance directly. They can influence operating temperature slightly if they add capacity or surface area, and magnetic plugs can help prolong component life by capturing debris. Performance changes are typically marginal and secondary to fitment and sealing quality.
Should I reuse the factory transmission pan gasket on a replacement pan?
If the replacement pan is designed to accept the factory gasket and the gasket is in good condition, reuse is possible but not recommended. For a reliable seal, install a new gasket or the gasket specified for the replacement pan to prevent future transmission pan leaks.
Final Verdict
Prioritize fitment, sealing quality, and serviceability when choosing a transmission pan for your Subaru Impreza. A pan that matches bolt patterns and sensor locations, uses a reliable gasket interface, and offers a drain or magnetic plug can reduce maintenance time and lower the risk of leaks.Balance the benefits of added capacity or cooling against ground clearance and installation complexity. By focusing on the decision factors above, you can choose a pan that improves maintenance access and long-term reliability without introducing fitment headaches.
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