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When you need a replacement oil pan for a Subaru Legacy, choosing the right unit matters for engine protection and ease of installation. A correctly matched oil pan ensures proper oil containment, prevents leaks, and maintains correct oil pickup orientation so the engine stays lubricated during normal driving. This guide highlights the top shortlisted options for Subaru Legacy oil pans, with attention to fitment, gasket interfaces, and manufacturing quality. Below we summarize the evaluation criteria used and present the best choices for common repair and maintenance scenarios.
Looking for other parts? See all Subaru Legacy parts & accessories.
Top Picks at a Glance
| Best Reviewed A top-rated pick with lots of positive feedback | Subaru Genuine Oil Pan (Part 11109AA151) |  |
| Most Popular A crowd favorite that many people choose with confidence | KAX Engine Oil Pan (replacement for Subaru Legacy and related models) |  |
| Best Quality Built to a higher standard if you want something more solid | Subaru OEM Oil Pan 11109AA131 |  |
| Best Budget The cheapest option that still gets the job done reliably | Mteycei TR580 Transmission Filter and Gasket Kit (fits Subaru Legacy 2013-2014) |  |
| Most Sold A high-volume bestseller chosen again and again | Subaru Genuine Oil Pan 11109AA093 |  |
| Best Value for Money The sweet spot between price and what you get | YHTAUTO Lower Engine Oil Pan Replacement for Subaru Legacy/Outback (2013–2019) |  |
| Best Overall The best all-around choice for most situations | Chapin 78005 12-Quart Low-Profile Oil Drain Pan |  |
1. Subaru Genuine Oil Pan (Part 11109AA151)
| Manufacturer | Subaru |
|---|---|
| Model | Oil Pan |
| Manufacturer Part Number | 11109AA151 |
| OEM Part Number | 11109 AA151 |
This is a genuine Subaru replacement oil pan intended to restore the factory-fitment and sealing of the engine sump on compatible Subaru vehicles. It installs in place of a damaged or leaking pan and is used during oil pan repairs or engine drops where a factory replacement is preferred. The part is manufactured to Subaru standards and carries the OEM part number for straightforward identification. Practical benefits include exact mounting points and flange alignment that simplify installation and minimize the need for modification, plus the reassurance of factory-spec fit and finish. Limitations are that it is a direct-fit factory piece so it provides no performance upgrades such as baffling or oil capacity changes, and buyers should ensure the part number matches their vehicle year and engine variant before ordering. This pan is best when you want a like-for-like, reliability-focused replacement rather than an aftermarket performance or lightweight alternative.
Best for: Practical, reliability-focused owners who prioritize restoring factory performance and long-term durability over performance modifications.
Less Ideal for: Owners seeking performance upgrades, modified oiling systems, or a lighter aftermarket pan should consider specialty alternatives instead.
- Genuine Subaru factory replacement ensures correct fit and mounting alignment
- Manufactured to Subaru standards for consistent build quality
- Direct-fit part number simplifies identification and installation
- Factory-quality surface and sealing areas reduce leak risk when installed properly
- Does not add performance features like increased oil capacity or internal baffling
- Not intended as a universal or multi-vehicle upgrade—must match exact vehicle application
Verdict Choose this genuine Subaru oil pan if you want a factory-match, reliability-first replacement rather than a performance-oriented aftermarket option.
2. KAX Engine Oil Pan (replacement for Subaru Legacy and related models)
| Vehicle fitment | Subaru Legacy 1996-2004 and other listed Subaru models |
|---|---|
| Includes | Engine oil pan with drain plug |
| Gasket | Not included |
| Exterior | Painted |
This KAX engine oil pan replaces the factory pan on compatible Subaru models and serves as the reservoir for engine oil while helping dissipate heat and keep contaminants out. It installs in place of the original pan and includes a drain plug but not the pan-to-block gasket, so you will need a gasket or sealant when you install it. The pan is described as thickened and painted for corrosion resistance and several user reports note a precise fit with no leaks when installed correctly. Because it is manufactured to meet factory-spec dimensions it is suitable for routine replacement after damage or corrosion. The main limitations are that the gasket is not included and some installers reported missing fasteners or the need to source bolts separately, so plan to have hardware and sealant on hand. For owners who want a straightforward, direct-fit replacement for Subaru applications, this pan delivers a durable, serviceable option at a practical value.
Best for: Buyers who prioritize convenience and want a ready-to-install, direct-fit replacement that restores oil containment and serviceability with minimal modification.
Less Ideal for: People looking for a complete repair kit including gasket and fasteners or those who need a custom or performance oil pan beyond a factory-style replacement.
- Direct-fit replacement for specified Subaru models, simplifying installation.
- Painted and thickened construction for corrosion resistance and impact durability.
- Includes drain plug so you can reuse the factory plug or replace it during service.
- Manufactured to factory-spec dimensions for proper oil capacity and sump shape.
- User reports indicate good fit and leak-free performance when installed correctly.
- Does not include the pan-to-block gasket, requiring a separate purchase or sealant.
- Some listings and reports note that mounting bolts or hardware may not be included.
- Limited to the Subaru model years and engines listed; verify part number before ordering.
Verdict A practical, factory-style replacement oil pan for compatible Subaru models that fits well and holds up, but order gasket and any fasteners separately.
3. Subaru OEM Oil Pan 11109AA131
| Manufacturer | Subaru |
|---|---|
| Item model number | 11109AA131 |
| OEM Part Number | 11109 AA131 |
This is a factory-quality Subaru oil pan sold as a direct replacement for compatible Subaru models. It installs in place of a damaged or leaking pan to restore the engine's oil containment and drain functionality. As a genuine Subaru part, it follows factory dimensions and mounting points so it fits without modification and includes the standard oil drain provision. For a performance-oriented buyer, the main benefit is confidence in fitment and durability under spirited driving because the part was manufactured to Subaru standards rather than an aftermarket tolerance. Installation is straightforward for anyone comfortable dropping and refitting an oil pan, and using this pan reduces the chance of leaks or alignment issues that can appear with cheaper reproductions. The limitation is this is a stock-spec replacement, not a high-capacity or baffled performance pan, so it will not improve oil control under extreme racing conditions and any upgrade for track use would require a dedicated performance pan.
Best for: Performance-oriented Subaru owners seeking a reliable, factory-spec replacement that preserves engine integrity and fitment without aftermarket risk.
Less Ideal for: Drivers looking for an oil pan that improves oil control or capacity for track use should consider a dedicated performance pan instead.
- Factory-quality fit and mounting for reliable, no-modification installation
- Made to Subaru standards to reduce risk of leaks compared with many aftermarket pans
- Direct replacement that restores original drain and oil containment functionality
- Backed by manufacturer part numbering for easy identification and service matching
- Standard stock design with no performance-oriented baffling or increased capacity
- Not intended as an upgrade for track-focused oil control
Verdict Choose this OEM Subaru oil pan when you want a factory-fit, dependable replacement rather than a performance upgrade.
4. Mteycei TR580 Transmission Filter and Gasket Kit (fits Subaru Legacy 2013-2014)
| Manufacturer | Mteycei |
|---|---|
| OEM Part Number | 31728AA141 |
| Compatible Vehicles | Subaru Legacy 2013-2014 H4 2.5L |
This transmission filter and gasket kit supplies the basic replacement parts needed when servicing the TR580 transmission on a 2013–2014 Subaru Legacy 2.5L. It includes the filter element and pan gasket sized to the TR580 family and is intended for routine fluid change and filter replacement to help keep transmission fluid free of debris. For do-it-yourself maintenance it is a straightforward swap that restores filtration and helps prevent internal clogging that can affect shift quality. The kit is a no-frills, budget-friendly option that matches the OEM part number listed for this fitment, so it simplifies parts matching. Limitations are its minimal packaging and lack of additional hardware or fluids, so you will need basic tools and replacement fluid on hand. Expect a functional, cost-conscious replacement rather than an upgraded or extended-life aftermarket solution.
Best for: Budget-conscious Subaru Legacy owners focused on keeping a 2013–2014 2.5L transmission maintained with an affordable, straightforward replacement part.
Less Ideal for: Drivers seeking high-performance or extended-life transmission components or a complete service kit with fluid and fasteners should consider higher-end or comprehensive options.
- Made to match the OEM replacement part number for the TR580 transmission used in 2013–2014 Subaru Legacy 2.5L
- Includes both filter element and gasket so you replace the sealing surface during a service
- Low-cost option suitable for routine maintenance and high-mileage vehicles
- Does not include transmission fluid or extra hardware, requiring separate purchase of fluid and any bolts or washers
- Basic, economy-grade kit without performance upgrades or extended-life components
Verdict A practical, low-cost filter and gasket kit that restores factory-spec filtration for a 2013–2014 Subaru Legacy but requires separate purchase of fluid and any hardware.
5. Subaru Genuine Oil Pan 11109AA093
| Manufacturer | SUBARU |
|---|---|
| Manufacturer Part Number | SUBARU11109AA093 |
| Fits models | Legacy, Impreza, Outback, Forester, Baja (non-turbo, select years) |
This is a genuine Subaru replacement oil pan sold as part number 11109AA093 and intended as a direct-fit swap for select Legacy, Impreza, Outback, Forester, and Baja non-turbo models. It is used when the original pan is damaged, leaking, or being replaced during engine work. As a factory-quality part it matches the original mounting points and oil drain location so installation is straightforward for a mechanic or competent DIYer using factory procedures. The main practical benefits are correct fitment, compatible sealing surfaces, and avoidance of fitment headaches that sometimes come with aftermarket pans. The package includes a single sealed OEM oil pan ready for installation. Limitations are that this part only fits non-turbo engine variants listed by Subaru and buyers should verify exact model year and VIN compatibility before ordering because fitment varies by year and engine option.
Best for: Risk-averse buyers who prioritize factory-correct replacement parts and minimal installation uncertainty for maintaining Subaru Legacy and related models.
Less Ideal for: Buyers seeking universal, modified, or performance oil pans or those with turbocharged engines should look for alternatives designed for those applications.
- Factory-quality fit and finish that matches original mounting points
- Direct-fit design simplifies installation and reduces need for modification
- Ships as a sealed genuine Subaru part to maintain factory compatibility and finish
- Limited to non-turbo engine variants and the specific years listed
- Buyer must confirm year and VIN fitment because applicability varies by model year
Verdict Choose this genuine Subaru oil pan when you want a direct, factory-compatible replacement for the listed non-turbo Legacy-era models rather than an aftermarket option.
6. YHTAUTO Lower Engine Oil Pan Replacement for Subaru Legacy/Outback (2013–2019)
| Manufacturer | YTAUTOPARTS |
|---|---|
| Compatible models | Subaru Legacy/Outback 2013-2019 |
| Drain plug thread | M16x1.5 |
| Bolt hole quantity | 11 |
This YHTAUTO lower engine oil pan is a budget-focused replacement intended to restore a Subaru Legacy/Outback that has a damaged or leaking factory pan. It installs in the lower engine location and includes the correct drain plug thread and bolt hole pattern to match the factory mounting points for 2013–2019 Legacy/Outback engines. In practice the pan performs the basic job: it holds engine oil, provides the drain opening, and bolts into place with the original hardware pattern so you can reuse gaskets and bolts. Buyers report accurate fit and no major clearance issues. The product is an economical alternative to dealer parts, but it does not include extra features like reinforcement ribs, integrated baffles, or an upgraded drain assembly, so it is a like-for-like replacement rather than a performance upgrade. Expect to need standard installation care—clean mating surfaces, use a proper gasket or sealant, and torque bolts to factory specs—to avoid leaks.
Best for: Practical owners who prioritize cost-effective, factory-quality repairs and want a straightforward replacement to get their Legacy back on the road without paying dealer prices.
Less Ideal for: Drivers seeking performance or heavy-duty upgrades, or those who want a fully rebuilt assembly with additional features and included hardware, should look elsewhere.
- Direct-fit replacement pattern for Legacy/Outback 2013–2019 for straightforward installation
- Includes standard drain plug thread compatible with factory drain hardware
- Economical option that restores oil containment without modifying other components
- Multiple customer reports of correct fit and damage-free delivery
- Does not include upgraded features such as internal baffles or reinforced construction
- Sold as the pan only so necessary seals, gaskets, or hardware may need to be sourced separately
Verdict A no-frills, budget-friendly lower oil pan that fits 2013–2019 Subaru Legacy/Outback and gets a leaking or damaged pan replaced without extras.
7. Chapin 78005 12-Quart Low-Profile Oil Drain Pan
| Capacity | 12 Quarts |
|---|---|
| Made in | USA |
| Material | Recycled polymer |
The Chapin 78005 is a straightforward oil drain pan built for low-clearance service on vehicles like the Subaru Legacy. Its under-5-inch profile lets it slide beneath low-slung oil pans so you can catch draining fluids without lifting the car higher than necessary. The large splash-reducing target area and 12-quart capacity hold the volume from most single oil changes, and molded carry handles make transporting and tipping the filled pan easier for disposal or recycling. The unit is made from recycled polymer and feels sturdy in use, with review reports noting reliable seals on the screw plugs when upright. Limitations to consider are the shallow depth compared with deep basins, which can increase splashing during very fast drains, and some users have reported cap durability or seal issues when transporting filled fluid. For routine oil and coolant changes on a Legacy, it reduces mess and fits where bulkier pans cannot, but expect to handle fast-flowing drains carefully and secure the cap well before moving the pan.
Best for: Balanced owners who perform regular maintenance and want a dependable, low-profile pan that fits under a Subaru Legacy without needing extra lift and keeps the workspace cleaner.
Less Ideal for: People who frequently drain high-volume, high-flow engines or who need a deep collection basin for coolant changes should consider deeper or specialist drain containers instead.
- Low-profile design fits under low-clearance vehicles for easier access during oil changes
- 12-quart capacity holds enough fluid for most single oil change jobs
- Large splash-reducing target area helps minimize mess while draining
- Molded-in carry handles make transporting and pouring used oil more manageable
- Constructed from recycled polymer and manufactured in the USA
- Shallow depth can allow splashing with very high initial oil flow
- Some users report cap or seal failures when transporting filled fluid
- Not as fast-draining as designs with larger vent openings
Verdict A practical, low-profile oil drain pan that fits under a Subaru Legacy and keeps routine fluid changes tidy, but watch for splashing on very fast drains and secure the cap before transport.
Choosing the Right Subaru Legacy Oil Pan: Key Factors to Consider
Fitment and Model Specificity
Proper fitment is the foundation of a successful oil pan replacement. For Subaru Legacy applications, the pan must match the engine orientation, bolt pattern, and clearances around subframe and exhaust components. A pan that is slightly off in hole alignment can cause installation difficulties and uneven gasket compression.
Model-specific pans reduce the risk of interference with oil pickup tubes and ensure correct drain location for routine maintenance. Verify that mounting bosses, sensor ports, and sump depth correspond to the Legacy variant you own to avoid surprises during installation.
Sealing Surface and Gasket Compatibility
The sealing interface between the pan flange and the block directly affects leak prevention. Look for pans with a smooth, consistently machined flange to promote even gasket compression and proper sealant adhesion. The choice of gasket type—rubber, cork, or molded—will influence how you apply sealant and torque the bolts.
Gasket compatibility also matters when planning a repair: some pans are designed to work with specific gaskets or sealants. Ensuring the pan and gasket approach match reduces the likelihood of an engine oil pan leak after installation.
Construction Material and Corrosion Resistance
Oil pans are commonly made from stamped steel or cast aluminum, and the material choice affects durability, weight, and corrosion resistance. Steel pans can dent from road debris but are often easier to repair; aluminum pans resist rust and can offer improved heat dissipation but may crack under impact.
Surface finishes, coatings, or treatments that resist salt and moisture are important for longevity, especially in regions that use road salt. Consider the local environment and driving conditions when assessing material and finishing quality.
Drain Plug and Thread Integrity
The drain plug location, thread type, and durability are practical considerations for maintenance. A well-designed drain plug should be accessible without removing other components and use reinforced threads or a replaceable insert to avoid cross-threading and stripping.
Inspect whether the pan provides a magnetic drain plug or a separate drain plug washer interface, and confirm that the drain orientation allows complete oil evacuation when the vehicle is on level ground.
Sump Depth and Oil Pickup Compatibility
Sump depth affects oil capacity and how the pickup sits relative to the lowest point. Too shallow a sump can lead to oil starvation during hard cornering or on slopes, while an excessively deep sump can change pickup placement and require pickup tube modification.
Ensure that the pan preserves correct oil pickup alignment and does not alter oil flow characteristics; baffle design inside the sump helps keep oil at the pickup during acceleration and braking, which matters for consistent lubrication.
Bolt Hole Alignment and Flange Flatness
Even small variances in bolt hole positions or flange flatness can create uneven clamping and lead to seal failure. Check for pans with precise machining tolerances and reinforced bolt boss areas to prevent elongation over repeated service.
A flat, true flange makes it easier to torque bolts to specification and reduces the need for excessive sealant. Reliable bolt-hole alignment simplifies installation and reduces the risk of leaks related to uneven gasket compression.
FAQ
How do I know if my Subaru Legacy oil pan needs replacement?
You will often see obvious signs such as visible oil under the vehicle, a persistent engine oil smell, or low oil levels that reappear quickly after topping up. Visual inspection can reveal dents, cracks, or permeable areas around the drain plug and flange. If you notice repeated oil loss despite replacing gaskets, the pan itself may be compromised.
Can I replace just the gasket instead of the whole oil pan?
In many cases replacing the gasket will fix minor leaks when the pan flange and bolt alignment are in good condition. However, if the flange is warped, cracked, or the pan has significant corrosion or damage, replacing just the gasket may not stop leaks. Evaluate the pan surface and threads before deciding to reuse the pan.
What torque should I use on oil pan bolts for a Subaru Legacy?
Recommended bolt torque depends on the engine and bolt size, and it usually follows a specific tightening sequence to prevent flange distortion. Consult the factory service manual for exact torque values and sequence. Using the correct torque ensures even gasket compression and reduces the chance of an engine oil pan leak.
Are aftermarket oil pans a good option for Subaru Legacy repairs?
Aftermarket oil pans can be good options when they offer model-specific fitment, quality materials, and clear specifications for drain and sensor provisions. Choose units with good manufacturing tolerances and corrosion-resistant finishes. Avoid generic universal pans that require modification or compromise pickup alignment.
What should I budget for oil pan repair beyond the pan itself?
Beyond the pan, plan for gasket or sealant, new drain plug washer or insert if applicable, and possibly replacement bolts if the originals are stretched or corroded. Labor for removal and installation varies with local rates and any required supports or component removal. Factor in inspection of the pickup and surrounding components for damage while the pan is off.
How We Chose the Best Subaru Legacy Oil Pan
We focused on items that directly address common Subaru Legacy service needs and long-term engine reliability. Key evaluation criteria included fitment accuracy to specific Legacy chassis and engine orientations, sealing interface design and gasket compatibility, construction material and corrosion resistance, drain accessibility and thread durability, and compatibility with factory oil pickup and baffle geometry. We also considered manufacturability factors such as machining tolerances where bolt-hole alignment matters, and evidence of quality control such as consistent flange flatness. Exclusions included universal or generic pans without model-specific fitment, pans that required significant modification to clear exhaust or suspension components, and any units lacking clear specifications for drain or sensor provisions. The final selections prioritize components that minimize installation headaches and reduce the chance of future oil leaks or interference with related engine systems.
Our full evaluation process is outlined in our review methodology.
Conclusion
When selecting a Subaru Legacy oil pan, prioritize exact fitment, a true sealing surface, and material quality that suits local driving conditions. Pay attention to drain plug design, sump depth, and internal baffling so oil pickup and flow remain correct under real driving loads. Balancing ease of installation with long-term durability will reduce the chance of future oil leaks and simplify maintenance. Use the factors discussed here to weigh tradeoffs and choose the option that best matches your vehicle and service goals.
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