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Keeping your Mazda Mazda6 transmission pan in good condition matters for vehicle reliability and routine maintenance access. A properly selected pan can help reduce the risk of leaks, make fluid service simpler, and protect internal components from debris. This guide presents seven shortlisted transmission pans that are well suited to Mazda Mazda6 owners. We evaluated factors such as material and corrosion resistance, gasket sealing, drain provisions, and fitment clarity. Read on to see the top picks and the criteria used to narrow the field.
Looking for other parts? See all Mazda Mazda6 parts & accessories.
Top Picks at a Glance
| Best Overall The best all-around choice for most situations | Dorman 265-892 Transmission Oil Pan for Select Mazda Models |  |
| Best Quality Built to a higher standard if you want something more solid | Riyhch Transmission Oil Pan Kit with Filter, Drain Plug & Gasket for Mazda 2/3/5/6, Ford Fusion, Mercury Milan |  |
| Best Value The sweet spot between price and what you get | MOTOKU Transmission Oil Pan with Drain Plug and Gasket |  |
| Best Budget The cheapest option that still gets the job done reliably | A-Premium Transmission Oil Pan with Drain Plug for Mazda 6 (2003-2005) |  |
| Highest Rated A top-rated pick with lots of positive feedback | Dorman 265-905 Transmission Oil Pan for select Mazda models |  |
| Most Popular A crowd favorite that many people choose with confidence | A-Premium Transmission Oil Pan with Drain Plug and Gasket (Vehicle Specific) |  |
| Best Seller A high-volume bestseller chosen again and again | AxleyHub Transmission Oil Pan with Drain Plug, Gasket and Filter for Mazda 6 (2006–2013) |  |
1. Dorman 265-892 Transmission Oil Pan for Select Mazda Models
| Model | 265-892 |
|---|---|
| Manufacturer | Dorman Products |
| OEM Part Number | FZ012151XA; FZ012151XB |
The Dorman 265-892 is a replacement transmission oil pan intended as a direct-fit repair for select Mazda models. It replaces a damaged factory pan during a fluid service or repair and is typically installed when the original pan is dented, cracked, or corroded. The pan is made to the manufacturer's fitment patterns and is described as durable with leak-free performance; Dorman notes try-on testing to confirm fit. It arrives ready to paint if desired and includes the manufacturer part references for verification. In practice this pan simplifies a common undercar repair by avoiding time-consuming gasket removal from an original pan and by restoring a solid sealing surface for a fresh gasket or RTV. Some buyers report excellent, OEM-like fitment while others found bolt-hole alignment issues on certain model years, so confirming exact trim fitment is important before installation. Expect a straightforward replacement when the confirmed-fit tool matches your Mazda6 trim, but plan for minor adjustments or gasket alternatives on models with tight tolerances.
Best for: Balanced owners who want a reliable, factory-quality replacement pan for routine transmission servicing on their Mazda6 and value a straightforward repair that restores sealing and serviceability.
Less Ideal for: Buyers who cannot confirm exact trim fitment with the vehicle tool or who need a guaranteed bolt-for-bolt match without any possibility of minor adjustment should consider alternative sources or dealer replacement parts.
- Direct-replacement design aimed to match factory fit for compatible Mazda models
- Durable construction intended for leak-free service
- Try-on testing claimed by the manufacturer to verify fit
- Arrives ready to paint so appearance can be refreshed if desired
- Some reports of misaligned bolt holes on specific model years which require verification before install
- May require using alternative gasket method or minor trimming on vehicles with tight tolerances
Verdict: A practical, factory-style replacement transmission pan that restores leak-free service on compatible Mazda models.
2. Riyhch Transmission Oil Pan Kit with Filter, Drain Plug & Gasket for Mazda 2/3/5/6, Ford Fusion, Mercury Milan
| Replacement Part Number | FSL0-21-51XB, FS50-21-51X, TOS18731, 440393 |
|---|---|
| Filter Part Number | 044-0393, 0440393, FNC121500, 6E5Z7B155A |
| Compatible Transmissions | 4F27E, FNR5, FS5A-EL |
| Applicable Vehicles | Mazda 2/3/5/6, Ford Fusion, Mercury Milan (listed years) |
This Riyhch transmission oil pan kit supplies a complete pan replacement with a matching transmission filter, drain plug, and gasket for compatible Mazda and Ford/Mercury 4- and 5-speed transmissions. It is typically used when a damaged pan or worn filter needs replacement during a transmission service or repair. Notable features include the included gasket and drain plug which simplify installation and reduce the need to source additional parts, plus listed replacement part numbers that match common factory identifiers for the specified models. In practice the kit lets a technician or competent DIYer drop the pan, change the filter, and reseal the pan in a single visit, restoring a clean pan surface and helping prevent leaks from a cracked or corroded original. Limitations are that fitment is limited to the listed transmissions and model years so confirmation of compatibility is required before purchase, and the kit does not include fluid so a transmission fluid fill is still needed after installation.
Best for: Performance-oriented owners seeking a high-quality, direct replacement pan kit to restore transmission integrity and support repeatable service intervals on Mazda 6 models with the listed transmissions.
Less Ideal for: Buyers who need a universal pan or who are unsure of their transmission model should avoid this kit until fitment is confirmed and may prefer consultative parts sourcing instead.
- Complete kit includes pan, transmission filter, drain plug, and gasket for one-stop replacement
- Lists multiple matching part numbers to aid confirming compatibility with factory parts
- Designed to restore a sealed pan assembly and simplify installation during service
- Includes a drain plug which avoids the need to source a separate plug for fluid evacuation
- Compatibility is restricted to specific Mazda and Ford/Mercury transmission models and years
- Transmission fluid is not included so additional fluid purchase is required
Verdict: A ready-to-install transmission pan kit that bundles the pan, filter, drain plug, and gasket to make high-quality transmission servicing straightforward for compatible Mazda 6 setups.
3. MOTOKU Transmission Oil Pan with Drain Plug and Gasket
| Brand | MOTOKU |
|---|---|
| Item model number | FSL02151XB |
| Manufacturer Part Number | FSL02151XB |
| Compatible vehicles | Includes Mazda6 among listed Mazda models |
This MOTOKU transmission oil pan is a budget-focused replacement that gives you a factory-style pan with an integrated drain plug and a supplied gasket for straightforward installation on compatible Mazda vehicles including the Mazda6 models listed by the manufacturer. It is used to replace a corroded or damaged pan and to add the convenience of a drain bolt for easier fluid changes. The pan includes mounting holes that match the factory bolt pattern and a crush washer for the drain plug, so most DIYers can swap it in with basic hand tools and a torque wrench. Practical benefits are clear: the drain plug removes the need to drop the pan to change fluid, and multiple customer reports indicate solid fitment with no leaks when installed carefully. A few installers preferred using silicone sealant instead of the supplied gasket to eliminate minor seepage, so attention to mating surface prep and proper torque is important. For a low-cost replacement that restores serviceability and adds a drain, this pan covers the essentials well but it is not an upgraded performance or heavy-duty option.
Best for: Practical optimizers who want a low-cost, serviceable replacement that restores factory-style function and adds a drain plug to simplify routine transmission maintenance on a Mazda6.
Less Ideal for: Owners looking for a heavy-duty, performance, or welded aftermarket pan for severe-duty use should consider upgraded options instead.
- Includes a drain plug and crush washer for easier transmission fluid changes
- Designed to match factory bolt pattern for direct fitment on listed Mazda models including Mazda6
- Low-cost replacement that restores serviceability and addresses rusted or damaged original pans
- Multiple user reports of good fit and leak-free installation when surface prep and torque are correct
- Supplied rubber gasket may require substitute sealant for a consistently leak-free seal
- Not a reinforced or performance-upgraded pan for heavy-duty use
Verdict: A budget-friendly, direct-fit replacement pan that adds a drain plug to make transmission servicing simpler on Mazda6 models.
4. A-Premium Transmission Oil Pan with Drain Plug for Mazda 6 (2003-2005)
| Compatible Models | Mazda 6 2003-2005 L4 2.3L Automatic 4-Speed |
|---|---|
| Material Type | Cast Iron |
| Gasket Included | No |
| Drain Plug Included | Yes |
| Sump Style | Wet |
This A-Premium transmission oil pan is a direct replacement-style sump for the Mazda 6 2003–2005 2.3L with the 4-speed automatic transmission and is meant to simplify service by including a drain plug. Made from cast iron with a painted, corrosion-resistant finish, it installs in place of the factory pan and lets you drain transmission fluid without dropping the pan, which speeds routine maintenance and reduces mess. The pan does not include a gasket or installation hardware, so budget buyers should expect to source a proper gasket and crush washer for the drain plug before installation. Build quality in customer reports is generally solid and the painted surface helps resist corrosion, but a few users have reported fitment issues or a soft drain plug that may strip when tightened. For a low-cost part that converts a factory sump into a serviceable pan, this offers clear value, though you may need to invest a little time and parts to ensure a leak-free, proper fitment on the Mazda 6 drivetrain.
Best for: Budget-conscious owners looking to add an easy drain point to a Mazda 6 2003–2005 automatic so they can perform more frequent, lower-cost transmission maintenance themselves.
Less Ideal for: Owners who want a complete OEM-equivalent kit ready to install out of the box or who prefer a stainless or aluminum pan for weight or corrosion reasons should consider higher-end alternatives.
- Includes a drain plug to allow fluid changes without removing the pan
- Cast iron construction with painted, corrosion-resistant finish
- Vehicle-specific design intended to match Mazda 6 2003–2005 4-speed automatic mounting points
- Gasket and installation hardware are not included
- Some buyers reported occasional fitment variance or a drain plug that can strip when over-tightened
Verdict: A low-cost cast iron replacement pan that adds a convenient drain plug to Mazda 6 2003–2005 automatics, making routine fluid changes much easier.
5. Dorman 265-905 Transmission Oil Pan for select Mazda models
| Model | Dorman 265-905 |
|---|---|
| Manufacturer Part Number | 265-905 |
| OEM Part Number | FS502151X; FSL02151X; FSL02151XB |
| Exterior | Ready To Paint If Needed |
This Dorman transmission oil pan replaces a damaged factory pan with a part engineered to the original geometry for straightforward installation on compatible Mazda models. It is typically used when the OEM pan is corroded, dented, or leaking and restores the transmission housing and fluid containment without modifying the drivetrain. Notable features include a factory-style shape and a finish that is ready to paint if desired. Practical benefits are an easier fluid change routine and the potential to regain a reliable, leak-free seal at a lower cost than dealer parts. Several customers report identical fit and the ability to transfer the original magnet into the new pan, indicating matching internal features. Important limitations are that fit must be confirmed for exact trims before ordering and the part does not include the transmission filter or gasket, so those items may need to be purchased separately during service.
Best for: Reliability-focused owners who prioritize restoring factory fit and leak-free performance without paying dealer prices, and who prefer proven replacement parts to extend their Mazda6's service life.
Less Ideal for: Buyers who want a complete service kit in one purchase or who need an upgraded performance pan with extra cooling capacity should consider other options.
- Direct-replacement geometry for straightforward fit on listed Mazda models
- Durable construction intended for leak-free service
- Ready-to-paint exterior so you can match chassis appearance
- Lower-cost alternative to dealer transmission pans
- Try-on tested for quality fit according to manufacturer notes
- Does not include transmission filter or gasket
- Fitment requires verifying vehicle trim before purchase
Verdict: A reliable, factory-fit replacement transmission pan that restores leak-free service for compatible Mazda models at a fraction of dealer cost.
6. A-Premium Transmission Oil Pan with Drain Plug and Gasket (Vehicle Specific)
| Fit Type | Vehicle Specific |
|---|---|
| OEM Part Number | FS50-21-51X, FSL0-21-51XB, TOS18731, 0440393, FS502151X, FSL02151XB |
| Manufacturer | PremiumpartsWhosale |
| Material | Steel |
| Gasket Included | Yes |
This replacement transmission oil pan is a direct-fit steel sump supplied with a gasket and a drain plug for quick service. It is intended for Mazda 6 and other listed Ford/Mazda/Mercury models with specific 4-speed and 5-speed automatic transmissions; installation replaces the factory pan during a fluid change or repair. The steel construction and corrosion-resistant finish mean it should withstand road exposure, and the included gasket and drain plug let you finish the job without sourcing additional parts. Several buyers report an exact fit and leak-free installs when bolts are torqued correctly and the magnetic drain remains in place for metal debris. Some users experienced drain-plug sealing problems, so careful torqueing and replacing the crush washer or using a compatible washer may be necessary. The pan comes with a one-year unlimited-mileage guarantee from the maker, which is helpful for DIYers who want confidence after installation.
Best for: Convenience-driven DIY owners who prioritize a simple, one-purchase repair that includes the parts needed to replace a transmission pan and complete a fluid change.
Less Ideal for: Drivers who want an OEM-branded replacement or need a pan for vehicles outside the listed Mazda 6 fitment should look for other options.
- Vehicle-specific fit for listed Mazda and Ford transmissions makes installation straightforward
- Includes gasket and drain plug so you can complete a fluid change without extra parts
- Steel construction with corrosion-resistant finish for durability in service conditions
- One-year unlimited-mileage guarantee provides extra confidence for DIY installation
- Some reports of drain plug leakage requiring a different crush washer or re-torqueing
Verdict: A complete, vehicle-specific steel transmission pan kit that simplifies a Mazda 6 transmission fluid service by including the gasket and drain plug.
7. AxleyHub Transmission Oil Pan with Drain Plug, Gasket and Filter for Mazda 6 (2006–2013)
| Included Components | 1 x Transmission Filter, 1 x Transmission Oil Pan, 2 x Gasket |
|---|---|
| Vehicle Fitment | Mazda 2/3/5/6 2006-2014; Ford Fusion 2006-2009; Mercury Milan 2006-2009 |
| Reference Part Numbers | FSL0-21-51XB; 044-0393; FNC121500 |
| Warranty Description | 1 Year |
This AxleyHub transmission oil pan kit replaces the factory pan and adds a new filter, drain plug and gaskets to simplify a transmission service on a Mazda 6 from the 2006–2013 model years. It is designed as a direct replacement and is marketed as thicker, wear and corrosion resistant material, which should hold up better than a corroded original pan. Typical use is for routine fluid changes or when repairing a leaky pan gasket; having the filter and gaskets included saves a separate parts purchase and speeds installation. The drain plug is convenient for controlled fluid removal instead of dropping the entire pan repeatedly. Limitations to note are that no installation instructions are provided and professional installation is recommended, so a novice will need a repair manual or shop help. Also the listing does not include detailed material/spec certifications, so long-term durability versus OEM parts is based on fitment and material claims rather than independent test data.
Best for: Risk-averse buyers who prioritize getting a complete, ready-to-install replacement kit for routine transmission service on a Mazda 6 and prefer minimizing additional parts purchases or sourcing hassles.
Less Ideal for: Do-it-yourselfers seeking detailed installation guidance or buyers who require verified material certification and lab-tested durability data should consider other options or professional advice.
- Complete kit includes transmission pan, filter, gaskets and drain plug for one convenient service
- Direct replacement fit targeted to Mazda 6 2006–2013 which reduces fitment guesswork
- Drain plug allows easier fluid changes without repeatedly removing bolts
- Manufacturer claims thicker, wear-resistant and corrosion-resistant construction for improved longevity
- No installation instructions included which means buyers may need professional installation or a service manual
- Material composition and testing data are not provided to verify long-term durability
Verdict: A full transmission pan service kit that simplifies replacement on Mazda 6 models by bundling the pan, filter, gaskets and drain plug for one straightforward swap.
Choosing the Right Mazda Mazda6 Transmission Pan: Key Factors to Consider
Material and Corrosion Resistance
The pan material affects durability and long-term resistance to road salt and heat. Steel pans are common and sturdy, while aluminum can offer lighter weight and better heat dissipation. Regardless of base metal, a quality coating or finish helps prevent rust and pitting that can compromise the sealing surface. Over time a corroded pan surface can warp or develop holes that lead to leaks, so favor materials and finishes that are proven to withstand the conditions your Mazda Mazda6 will face. Consider how the material affects heat transfer too, since transmission temperature can influence fluid life.
Gasket and Sealing Design
A reliable gasket interface is key to preventing transmission pan leaks. Some pans use a molded rubber gasket, while others rely on a formed paper or composite gasket. The gasket design should provide even compression across bolt locations and resist fluid swelling or deterioration. Also assess whether the pan includes a gasket or requires a separate transmission pan gasket purchase. The sealing surface must be flat and free from imperfections to maintain a long-lasting seal with the transmission housing.
Drain Plug and Serviceability
A built-in drain plug can make transmission fluid change pan maintenance much cleaner and faster by avoiding a full drop of the pan. When present, the drain plug should be robust, positioned for access without interference, and include a proper sealing washer or O-ring to prevent slow leaks. Even without a drain plug, pan shape and bolt layout affect how easily you can drop the pan for filter access and fluid replacement. Consider whether the pan design reduces the time and mess of routine service.
Fitment Accuracy and Bolt Alignment
Correct bolt hole alignment and overall fitment determine whether the pan will seat evenly against the transmission. Poorly positioned holes or an imprecise flange can cause uneven gasket compression, leading to leaks and potential rework. Accurate fitment also reduces installation time and the risk of cross-threading bolts. Look for pans that specify vehicle compatibility clearly and provide adequate hole patterns and flange tolerances for the Mazda Mazda6 application.
Capacity and Pan Depth
Pan depth and internal capacity influence the amount of fluid retained below the filter and the ease of catching fluid when servicing. A deeper pan may increase fluid capacity slightly, which can affect fill level and the number of quarts needed during a transmission fluid change pan service. Consider whether a larger capacity or deeper pan is appropriate for your driving habits and whether it impacts clearance or installation constraints under the vehicle.
Construction Details and Hardware
Small construction details matter, including the quality of welds, the finish on bolt holes, included drain hardware, and whether proper torque specs or torque recommendations are provided for the pan bolts. Some pans include hardened threads or captive nuts for easier installation. Good hardware and construction reduce the chance of damage during installation and make it easier to follow torque specifications to create a reliable seal without stripping threads or deforming the pan.
How We Chose the Best Mazda Mazda6 Transmission Pan
We focused on pans that fit the Mazda Mazda6 and that address the most common maintenance and durability concerns for this vehicle. Key evaluation criteria included material and coating quality to resist corrosion and heat, gasket interface design and sealing reliability, the presence and design of a drain plug to simplify fluid changes, and the accuracy of bolt hole alignment and mounting features to ensure proper fit and sealing. We also considered pan depth and internal capacity where relevant for service intervals, and whether the design allowed for easy access to the transmission filter and magnet locations. We excluded pans with unclear fitment information, those lacking basic sealing provisions, and products without demonstrable material or manufacturing details. We prioritized pans that help reduce the chance of transmission pan leaks, simplify dropping the pan for maintenance, and provide long-term corrosion protection.
Our full evaluation process is outlined in our review methodology.
FAQ
How do I know if the transmission pan on my Mazda Mazda6 is leaking?
Look for transmission fluid pooling under the vehicle, often reddish or brown fluid near the transmission area. Inspect the pan flange, drain plug, and gasket surface for wetness. Small leaks can be caused by a loose or worn transmission pan gasket, while larger leaks may indicate flange damage or a cracked pan. If you see fluid, clean the area and monitor the source to confirm it is coming from the pan before attempting repairs.
Can I replace just the transmission pan gasket instead of the whole pan?
Often you can replace only the transmission pan gasket if the pan is undamaged and the sealing surface is flat. Replacing the gasket is a common fix for slow leaks. However, if the pan is corroded, warped, or missing mounting integrity, a replacement transmission pan may be the better long-term solution. Always inspect the pan and flange carefully during service.
Is it worth getting a pan with a drain plug for fluid changes?
A pan with a drain plug can make transmission fluid change pan maintenance cleaner and faster by letting you drain fluid without removing the entire pan. This reduces mess and can save time, but you should still inspect the filter and magnet areas during service. Ensure the drain plug has a reliable sealing washer to avoid introducing a new leak point.
Do I need special torque specs when reinstalling the transmission pan?
Yes, using the correct transmission pan torque specs helps ensure even gasket compression and prevents warping or leaks. Tightening bolts to the manufacturer-recommended sequence and torque value reduces the risk of overcompressing one area and undercompressing another. If specifications are not included with the pan, consult the vehicle service manual for the Mazda Mazda6 torque guidance.
Will an aftermarket transmission pan affect my transmission performance?
A properly designed aftermarket pan should not negatively affect transmission performance and can offer benefits like improved corrosion resistance or easier serviceability. The key is fitment accuracy and maintaining correct fluid level and sealing. Avoid pans with unclear fit information or poor construction, as those may lead to leaks or installation issues.
Conclusion
When choosing a transmission pan for a Mazda Mazda6, prioritize proper fitment, a reliable gasket interface, and corrosion-resistant materials. These factors have the most direct impact on leak prevention and long-term serviceability. Also weigh serviceability features like a drain plug and the quality of included hardware. Balancing sealing reliability, ease of maintenance, and construction quality will help you select a pan that reduces maintenance time and lowers the chance of future leaks.
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