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When your Acura TSX transmission pan needs replacement, selecting the right pan matters for durability and ease of maintenance. The wrong pan can complicate fluid changes, make leak repair harder, or fail to seat properly against the transmission case. This guide shortlists the top options for the Acura TSX and explains the tradeoffs you should consider. We evaluated pans for fit, construction, and serviceability to surface the best candidates. Read on to see the top picks and learn which features matter most when replacing or upgrading the transmission pan.
Looking for other parts? See all Acura TSX parts & accessories.
Top Picks at a Glance
| Best Reviewed A top-rated pick with lots of positive feedback | Speedway Motors Black Steel GM TH-350 Transmission Pan with Drain Plug |  |
| Most Popular A crowd favorite that many people choose with confidence | Dorman 265-813 Transmission Oil Pan with Drain Plug |  |
| Best Quality Built to a higher standard if you want something more solid | Dorman Transmission Oil Pan with Drain Plug (Model 265-582) |  |
| Best Budget The cheapest option that still gets the job done reliably | ATP Automotive Graywerks Transmission Oil Pan (103017) |  |
| Most Sold A high-volume bestseller chosen again and again | JohnDow Industries JD-2436 "Big Mouth" Transmission Drain Pan |  |
| Best Value for Money The sweet spot between price and what you get | Racing Power R8491 Polished Aluminum Transmission Pan |  |
| Best Overall The best all-around choice for most situations | Dorman 265-811 Transmission Oil Pan with Drain Plug and Filter Assembly |  |
1. Speedway Motors Black Steel GM TH-350 Transmission Pan with Drain Plug
| Material Type | Steel |
|---|---|
| Depth | 2" |
| Drain Plug | Yes |
| Finish | Painted |
| Transmission Pan Style | Stock Style |
This Speedway Motors transmission pan is a straightforward steel replacement designed around a stock-style TH-350 application. It installs like a factory replacement and is typically used to replace a leaky or damaged pan or to add a convenient drain plug where the original pan lacked one. The 2-inch depth matches stock capacity, the stamped GM 350 detail gives a factory-style look, and the black painted finish resists corrosion under the vehicle. Practical benefits include easier fluid changes thanks to the pre-installed drain plug and a heavier-feeling stamped steel construction that reviewers describe as at least as thick as factory pans. Limitations are its application focus on TH-350 transmissions, so it is not a universal pan for other transmission models, and it does not include a gasket, bolts, filter, or pickup tube, so you will need those parts separately during installation.
Best for: Reliability-focused buyers who prioritize durable, factory-style replacements and straightforward maintenance upgrades for older transmissions.
Less Ideal for: Drivers seeking a transmission pan for modern Acura TSX models or other non-TH-350 transmissions should look for pans specified for their vehicle and transmission.
- Factory-style stamped design with a GM 350 logo for authentic appearance
- Painted steel construction offers durable, corrosion-resistant finish
- Pre-installed drain plug simplifies fluid changes and reduces mess
- 2-inch depth maintains stock transmission fluid capacity
- Made specifically for GM TH-350 transmissions and not compatible with other models
- Does not include gasket, bolts, filter, or pickup tube so additional parts are required
Verdict A durable, stock-capacity steel pan with a built-in drain plug that works well as a reliable replacement for TH-350 transmissions but is not suitable for Acura TSX transmissions.
2. Dorman 265-813 Transmission Oil Pan with Drain Plug
| Manufacturer | Dorman Products |
|---|---|
| Model | 265-813 |
| Position | Center |
This Dorman transmission oil pan replaces a damaged factory pan and adds a built-in drain plug to make fluid changes much cleaner and faster. It is intended as a direct-fit replacement that matches the original pan's bolt pattern and sealing surface so installers can swap it into the vehicle without major modification. Notable features include a threaded drain outlet and a ready-to-paint exterior finish. In practical use the drain plug saves time and reduces mess compared with pans that must be pried off to drain fluid, and reviewers report a good fit and leak-free service when installed with a proper gasket and correctly torqued bolts. Some units show slightly rough thread machining on the drain outlet, so check and chase the threads or replace the plug washer if necessary before first use. This pan is best for owners who want a straightforward, service-friendly replacement rather than an OEM-only part.
Best for: Drivers who prioritize convenience and easier maintenance and want a service-friendly replacement that reduces time and mess when changing transmission fluid.
Less Ideal for: Buyers seeking an exact OEM-branded pan or specialty performance pans with internal baffles or reinforced skid protection should look elsewhere.
- Direct replacement fit intended to match factory sealing surface
- Integrated drain plug simplifies transmission fluid changes and reduces spills
- Durable stamped construction with a finish that can be painted if desired
- Some units have roughly cut drain threads that may require chasing or plug replacement
- Bolt hole alignment on a few examples needed slight adjustment to start bolts easily
Verdict Adds a convenient drain plug to a factory-style replacement pan to make transmission servicing quicker and cleaner.
3. Dorman Transmission Oil Pan with Drain Plug (Model 265-582)
| Model | 265-582 |
|---|---|
| Manufacturer Part Number | 265-582 |
| Manufacturer | Dorman Products |
| OEM Part Number | 24222657; 24224781; 24236933; 29535617 |
This Dorman transmission oil pan adds a factory-quality drain plug to the pan so you can drain transmission fluid without fully removing the pan, making routine drain-and-fill service much cleaner and faster. It is intended as a direct-fit replacement and is designed and tested to match original fit and sealing surfaces. Typical use is on vehicles where access under the pan is tight or where owners want to change fluid more frequently without major disassembly. Notable features include a service-friendly integrated drain plug, vehicle try-on testing, and salt-spray evaluation to resist corrosion. Practical benefits are simpler maintenance, reduced mess during service, and a premium rubber gasket included for proper sealing. Limitations are that this is a replacement pan only and does not address internal transmission wear or include filter or hardware beyond the pan and gasket; installation can still be awkward on crowded underbody layouts and may require temporary removal of nearby heat shields or exhaust components. Confirm fitment carefully for your Acura TSX before purchasing.
Best for: Performance-oriented owners who prioritize frequent, clean transmission maintenance and want a service convenience that supports more aggressive fluid-change intervals.
Less Ideal for: Drivers who prefer dealer service that includes filter replacement or those unwilling to perform underbody work should consider a full service package instead.
- Integrated drain plug allows clean drain-and-fill service without dropping the pan
- Engineered to match factory fit and sealing surfaces for reliable installation
- Corrosion-tested design and vehicle try-on evaluation for long-term durability
- Includes a premium rubber gasket for improved sealing on installation
- Does not include filter or additional installation hardware
- Installation may be difficult on vehicles with confined undercarriage access
Verdict If you want cleaner, more frequent transmission fluid changes without dropping the pan, this factory-fit Dorman pan with a drain plug delivers that convenience.
4. ATP Automotive Graywerks Transmission Oil Pan (103017)
| Brand | atp automotive |
|---|---|
| Specific Uses For Product | 4L60-E; THM700-R4/4L60/MD8; THM180C/MD2 |
| Liquid Volume | 0.12 Liters |
| Unit Count | 1.0 Count |
This ATP Graywerks transmission oil pan replaces a worn or damaged pan for transmissions listed in the fitment notes and is built as a heavy-gauge steel, powder-coated factory-quality replacement. It is used when servicing the transmission for leaks, pan gasket replacement, or fluid changes and includes internal baffling and matched fluid capacity so the transmission’s fluid control remains correct. The heavy-gauge construction resists warping and the coating helps prevent corrosion compared with untreated steel pans. Practical benefits are straightforward: it restores a leak-free sealing surface, keeps metal debris away from the fluid, and avoids the need for a custom repair. Limitations are that fitment must be confirmed for the specific vehicle and transmission variant, and this is a basic replacement pan without integrated features such as a reusable drain valve or external cooling fins that some premium pans offer.
Best for: Budget-conscious buyers who need a reliable, no-frills replacement pan to stop leaks or refresh transmission service without paying for premium extras.
Less Ideal for: Buyers seeking performance upgrades such as improved cooling, integrated drain valves, or a decorative finish should consider higher-end aftermarket pans instead.
- Heavy-gauge steel construction improves durability and resistance to warping
- Powder-coated finish resists corrosion for longer service life
- Matches factory fluid capacity and includes internal baffling for correct fluid control
- Designed as a direct replacement to restore a reliable sealing surface
- Does not include a drain plug or internal filter element
- Lacks advanced features like cooling fins or billet construction found on higher-end pans
Verdict A cost-effective, factory-replacement style transmission pan that restores sealing and durability without premium features.
5. JohnDow Industries JD-2436 "Big Mouth" Transmission Drain Pan
| Brand | JohnDow Industries |
|---|---|
| Model | JD-2436 |
| Product Type | Transmission drain pan |
| Designed Funnel Size | 6 inch or larger |
The JohnDow JD-2436 Big Mouth transmission drain pan is a wide plastic catch basin made to collect fluid when you drop a long transmission pan, keeping garage floors and workspaces clean. Its stepped design accommodates funnels with a 6-inch or larger diameter and provides an expanded collection surface that sits under long pans like those on an Acura TSX during service. In practice it is placed beneath the transmission pan drain or loosened pan to capture fluid and debris; users praise its sturdiness and large area that prevents overflow when changing transmission fluid or performing related maintenance. The pan is lightweight and easy to position, and reviewers note it works well with long Ford and other long pans, which translates to coverage for the TSX’s pan length. Limitations include the basic plastic construction that can chip on impact and the lack of an integrated spout or valve for controlled emptying, so you will need a secondary container or funnel to transfer used fluid for disposal.
Best for: A risk-averse mainstream buyer who prioritizes reliable, simple tooling for routine maintenance on an Acura TSX and wants a proven, no-frills solution to avoid messy fluid spills.
Less Ideal for: People seeking professional shop features such as metal pans with built-in drains, or those who need an integrated spout for easy pouring and disposal should consider heavier-duty alternatives.
- Very large collection area reduces spills under long transmission pans.
- Stepped design fits common funnels with 6-inch or larger openings for easier fluid transfer.
- Lightweight and easy to position under the vehicle for one-person jobs.
- Sturdy plastic construction handles regular garage use for fluid changes.
- No integrated drain spout or valve, so emptying requires additional tools or containers.
- Plastic may chip if dropped or struck on a hard edge during handling.
Verdict A roomy, practical drain pan that minimizes spills for TSX transmission jobs but lacks a built-in spout for easy emptying.
6. Racing Power R8491 Polished Aluminum Transmission Pan
| Part Number | R8491 |
|---|---|
| Country of Origin | Taiwan, Province Of China |
This Racing Power R8491 transmission pan is a polished aluminum replacement intended to bolt in place of the factory pan on the Acura TSX for routine service and modest performance gains. It lowers fluid temperature slightly thanks to the aluminum construction and greater surface area, which can help transmission longevity during spirited driving or towing. Installation is straightforward for a competent DIYer or a shop because it follows factory bolt pattern and mounting points. The polished finish looks cleaner than the stamped steel pan and resists corrosion better than untreated metals. Limitations are its basic design: there is no integrated magnetic drain plug or removable filter and the product does not include detailed gasket hardware, so expect to buy a proper pan gasket and transmission fluid separately. Also, aluminum pans can be more prone to damage from road impacts than heavier stamped or reinforced pans, so careful installation and clearance checks are recommended.
Best for: A practical optimizer who wants a cost-effective, factory-fit pan that improves cooling and appearance without a full performance overhaul; ideal for TSX owners who perform regular fluid service themselves.
Less Ideal for: Not suitable for drivers needing heavy-duty protection from off-road impacts or those who want an integrated filter or drain system built into the pan.
- Polished aluminum improves heat dissipation compared with standard steel pans.
- Factory-fit bolt pattern simplifies installation on the Acura TSX.
- Corrosion-resistant finish keeps the underside cleaner and more presentable.
- Lightweight construction reduces added mass compared with heavy aftermarket pans.
- No integrated magnetic drain plug or removable filter included.
- Gasket and hardware are not provided, requiring separate purchases.
Verdict A budget-friendly, factory-fit polished aluminum pan that lowers transmission temperatures and cleans up the underside but requires separate gasket hardware and lacks integrated drain or filter features.
7. Dorman 265-811 Transmission Oil Pan with Drain Plug and Filter Assembly
| Material | Steel |
|---|---|
| Position | Center |
| Bolt Pattern (Number of Holes) | 16 |
| Model | 265-811 |
This Dorman transmission oil pan replaces a factory-style pan while adding a convenient drain plug to let you remove fluid before lowering the pan, which keeps the workspace cleaner during a service. It is constructed from steel with an E-coat finish to resist corrosion and comes packaged with a filter assembly, gasket and an integrated magnet so you have the core parts needed for a typical transmission service. In practice the drain plug makes fluid changes much less messy and the included filter simplifies a filter-and-pan replacement job. Fitment notes matter for the Acura TSX so verify vehicle-year compatibility before ordering; some users needed to clear small obstructions or swap a crush washer for a nylon option to stop leaks. The pan is a direct replacement in many applications but may require minor adjustments during installation and you should follow torque and sealing guidance to avoid leaks.
Best for: Balanced buyers who value a practical, service-friendly upgrade that reduces mess and includes the basic parts needed for a transmission filter and pan service on their Acura TSX.
Less Ideal for: Owners seeking a cosmetic upgrade or lightweight alloy pan for track use should look elsewhere; also avoid if you need a zero-modification guaranteed fit for uncommon model years without verifying compatibility.
- Integrated drain plug for cleaner fluid changes and less mess when servicing the transmission
- Includes filter assembly, gasket and magnet so one purchase covers the common service items
- E-coat finished steel construction improves corrosion resistance over plain steel pans
- May require minor clearance or small modifications on some vehicles during installation
- Some installers recommend replacing the factory crush washer to prevent drain plug leaks
Verdict A practical, service-oriented replacement pan that simplifies fluid changes and includes filter hardware, but check fitment and be prepared for minor installation adjustments.
Choosing the Right Acura TSX Transmission Pan: Key Factors to Consider
Fit and Bolt Pattern
Accurate fit and correct bolt pattern are essential because the pan must seal evenly against the transmission case. A mismatched pan can cause uneven gasket compression, which often leads to leaks and additional labor to correct. When a pan is designed specifically for the Acura TSX, bolt holes, drain locations, and clearances for nearby components line up precisely, reducing installation time and the need for modifications.
Poor fit can also affect sensor access and pan clearance for suspension or exhaust components. Choosing a pan with manufacturer-verified fitment minimizes the chance of interference and ensures the gasket seats properly for a reliable seal.
Material and Construction
Pan material influences durability, corrosion resistance, and weight. Steel pans are robust and handle impacts well, but they may corrode over time if not properly treated. Aluminum pans resist rust and often dissipate heat better, which can help lower transmission fluid temperature, but they may be more susceptible to denting under heavy road debris.
Construction quality matters too: look for pans with uniform flanges, finished mating surfaces, and reinforcements in high-stress areas. A well-made pan reduces the risk of warping and helps maintain a consistent seal throughout temperature cycles.
Drain and Service Features
Built-in drain plugs or magnetic drain designs greatly simplify routine transmission fluid changes and reduce mess. A drain plug allows you to remove fluid without fully dropping the pan, saving time and minimizing spillage. Magnetic plugs or integrated magnets in the pan base capture fine metal particles, offering an early indicator of internal wear and helping to keep fluid cleaner between services.
Consider the location and accessibility of the drain so you can use it with available tools and under-car clearances. Pans that facilitate easier drainage make regular maintenance faster and cleaner.
Gasket Interface and Seal Design
The pan-to-case interface and gasket design determine how well the assembly resists leaks. Some pans use flat flanges that require a separate gasket, while others have integrated sealing features or use pre-applied sealants. The choice affects installation technique and the likelihood of a leak if not installed correctly.
Ensure the gasket style is compatible with the transmission case and that torque specifications for bolts are followed to avoid over-compression or uneven sealing. A reliable sealing system reduces the need for rework and helps maintain fluid integrity.
Capacity and Drainback
Pan capacity affects the total volume of fluid in the system after a fluid change. Larger pans hold more fluid and can slightly alter fluid change processes and fill levels, so be aware of capacity differences when servicing. Drainback characteristics also matter: some pans trap more fluid when removed, which can make swaps messier and extend service time.
If you plan to do frequent fluid service, choose a pan that balances capacity with convenient drainback behavior to streamline maintenance.
Corrosion Protection and Finish
Surface treatments and coatings protect the pan from rust and environmental damage. Pans with proper coatings, anodizing, or powder-coated finishes tend to last longer in climates with road salt or high humidity. Corrosion can eventually lead to leaks or weakened structural integrity, so a durable finish is a practical investment.
Inspect the finish for complete coverage on seams and flange areas. Long-term protection reduces the chance of unexpected failure and keeps the pan looking and performing well over time.
FAQ
How do I know if my Acura TSX transmission pan is leaking?
Look for fluid pooling under the vehicle after it has been parked and for wetness around the pan flange or drain plug. Transmission fluid is usually reddish when new and darker when older. Also check for low fluid levels or transmission performance changes, which can indicate a leak. If you find fluid, inspect the pan bolts, gasket surface, and drain plug for loose hardware or damaged seals.
Can I drop the transmission pan myself for a fluid change?
Dropping the pan for a fluid change is a common DIY task but depends on your comfort level and tools. Use proper supports and safety precautions, and be prepared for fluid to drain quickly when the pan is loosened. Have a catch container ready and follow the vehicle-specific procedure for bolt removal and torque. If you are unsure about torque specs or gasket installation, consult a repair manual or a professional.
Should I use a new gasket when replacing the transmission pan?
Yes, replacing the gasket is recommended whenever the pan is removed to ensure a reliable seal. Old gaskets can become brittle, compressed, or damaged during removal. Select a gasket type that matches the pan's flange design and follow proper torque patterns to avoid over-compressing the seal.
Do transmission pans come with drain plugs or magnets?
Many replacement pans include drain plugs and some include magnetic elements or magnetic drain plugs to capture metal particles. These features can simplify maintenance and provide early indication of internal wear. Check the product details to confirm whether a pan has these service-friendly features before purchasing.
How tight should the transmission pan bolts be torqued?
Bolt torque varies by vehicle and pan type, and it is best to follow the Acura TSX-specific torque specs from a repair manual. Typically, bolts are tightened in a crisscross pattern to an even, moderate torque to avoid flange distortion. Over-tightening can warp the pan or crush the gasket, while under-tightening can lead to leaks.
Will an aftermarket pan affect transmission cooling?
Aftermarket pans can influence cooling depending on material, thickness, and internal surface area. Aluminum pans often dissipate heat better than steel, while deeper pans may increase fluid capacity and thermal mass. However, results vary by design, so consider the construction and intended purpose when selecting a pan.
How We Chose the Best Acura TSX Transmission Pan
Our selection process focused on criteria that affect long-term performance and day-to-day serviceability for the Acura TSX. We prioritized precise fit and bolt hole alignment to ensure proper sealing and reduce the risk of transmission pan leaks. Material and construction were assessed to determine resistance to corrosion and impact, since pans that resist dents and rust last longer in varied driving conditions. Drain and service features were considered, including the presence and design of drain plugs or magnetic plugs to simplify fluid changes and capture metal debris. We also evaluated gasket interface design and compatibility with common transmission pan gaskets to help ensure a secure seal. Ease of installation and accessible bolt patterns were included, since straightforward fitment reduces installation errors. We excluded pans that lack clear fitment information for the Acura TSX, incomplete hardware kits, or pans with unspecified materials. The result is a shortlist that balances fit, durability, and serviceability for this vehicle.
Our full evaluation process is outlined in our review methodology.
Conclusion
Choosing the right transmission pan for an Acura TSX means balancing fit, durability, and serviceability. Prioritize pans that precisely match the bolt pattern and offer reliable sealing features to minimize leaks and installation issues. Consider service-friendly attributes such as drain plugs and magnetic elements if you plan to perform regular fluid maintenance. Remember that material and finish affect long-term durability and cooling, while gasket style and torque procedures determine sealing reliability. Keep these tradeoffs in mind to pick a pan that meets your maintenance routine and longevity expectations.
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