Note: This article contains affiliate links. If you click on these links and make a purchase, I may earn a small commission at no extra cost to you. This helps support my research and content. Read my full affiliate disclosure here.
When you need a replacement transmission pan for a Lexus IS, picking the right pan affects maintenance time, leak risk, and service convenience. You want a pan that fits accurately, seals reliably, and makes fluid changes straightforward so routine service is faster and cleaner.This guide covers our shortlisted top picks for Lexus IS transmission pans and explains the criteria we used to evaluate them, including fitment, sealing method, and service features. Read on to see which options match the maintenance tasks you expect to undertake.
Looking for other parts? See all Lexus IS parts & accessories.
Top Picks at a Glance
| Best Overall The best all-around choice for most situations | Dorman Transmission Oil Pan 265-836 |  |
| Best Quality Built to a higher standard if you want something more solid | A-Premium Transmission Oil Pan with Drain Plug for Lexus IS350/GS350/GS430/LS430/SC430 |  |
| Best Value The sweet spot between price and what you get | Dorman Transmission Oil Pan 265-900 |  |
| Best Budget The cheapest option that still gets the job done reliably | MYSMOT Transmission Oil Pan with Drain Plug (fits select Lexus/Toyota models) |  |
| Highest Rated A top-rated pick with lots of positive feedback | Dorman 265-811 Transmission Oil Pan with Drain Plug and Filter Assembly |  |
| Most Popular A crowd favorite that many people choose with confidence | Dorman 265-866 Transmission Oil Pan |  |
| Best Seller A high-volume bestseller chosen again and again | Dorman Transmission Oil Pan, Model 265-818 |  |
1. Dorman Transmission Oil Pan 265-836
| Model | 265-836 |
|---|---|
| Exterior | Machined |
| Manufacturer | Dorman Products |
This Dorman transmission oil pan is a factory-style replacement intended to restore a damaged or leaking transmission pan to serviceable condition. It bolts up like the original, uses a machined exterior for consistent sealing, and has been try-on tested for fit. Typical use is a repair or maintenance job where the original pan has been dented or cracked by road debris or corrosion; installers report it aligns with mounting holes and accepts the original gasket and hardware when installed carefully. Benefits include durable construction that resists leaks and a fit that simplifies replacement without modifying the vehicle. Important limitations are that fitment must be confirmed for the specific Lexus IS year and trim before purchasing and that fasteners should be torqued correctly to avoid breaking thin bolt threads. This part replaces the pan only and does not include internal transmission components or gasket material in every package, so plan to reuse or buy replacement bolts and gasket as needed.
Best for: Balanced all-round buyers who prioritize a reliable, factory-quality replacement to keep a Lexus IS running as intended without performance upgrades or custom work.
Less Ideal for: Do not choose this if you need performance or capacity upgrades, a sump with additional fluid capacity, or a pan that includes internal filters or sensors as part of the assembly.
- Factory-style fit that bolts to original mounting points
- Machined exterior for consistent sealing and leak resistance
- Try-on tested by the manufacturer for improved fitment confidence
- Package may not include gasket or replacement bolts
- Requires correct torque on thin bolts to avoid breakage
Verdict: A straightforward, factory-style replacement pan that restores fit and leak-free function for compatible Lexus IS models.
2. A-Premium Transmission Oil Pan with Drain Plug for Lexus IS350/GS350/GS430/LS430/SC430
| Vehicle Fitment | Lexus GS350 2007-2011, GS430 2006-2007, IS350 2006-2015, LS430 2004-2006, SC430 2006-2010 |
|---|---|
| Reference Part Number | 3510650040, 35106-50040 |
| Material | Steel |
| Drain Plug | Included |
| Gasket | Not Included |
This A-Premium transmission oil pan is a direct-fit steel replacement intended for Lexus 3.5L and 4.3L automatic transmissions found in IS350, GS350, GS430, LS430, and SC430 model years listed. It installs in place of the factory pan to restore a sealed, corrosion-resistant sump and includes a serviceable drain plug so fluid changes are faster and cleaner. The pan is offered new with a corrosion-resistant finish and is supplied without a gasket, so you should plan to use a replacement gasket or sealant during installation. For performance-minded owners the drain plug and robust steel construction make routine fluid servicing easier and reduce the risk of damage compared with thin stamped pans. Expect the usual professional-level installation steps: lift the vehicle, drain fluid, unbolt the old pan, fit seal and torque to factory specs. The pan comes with a one-year unlimited-mileage guarantee from the maker, but omission of a gasket means one more purchase and a little extra prep time before fitting.
Best for: Performance-oriented Lexus owners who prioritize durable, serviceable transmission components and want a factory-style replacement that simplifies fluid changes and withstands road wear.
Less Ideal for: DIY buyers seeking a complete drop-in kit without extra parts or drivers who cannot access a lift or basic shop tools for correct installation.
- Steel construction offers greater durability and resistance to impact compared with thin stamped alternatives
- Included drain plug simplifies fluid changes and reduces mess during service
- Corrosion-resistant surface finish helps the pan last in road salt and humid conditions
- Direct-fit design matches listed Lexus transmission reference numbers for straightforward replacement
- Gasket is not included so buyers must purchase a separate gasket or sealant before installation
- Requires professional-level installation tools or a lift to access and torque to factory specifications
Verdict: A durable, direct-fit steel transmission pan with a serviceable drain plug that simplifies fluid changes for performance-focused Lexus owners.
3. Dorman Transmission Oil Pan 265-900
| Manufacturer Part Number | 265-900 |
|---|---|
| OEM Part Number | 35106-60180; 351060C010 |
| Brand | Dorman |
| Model | Dorman 265-900 |
This Dorman transmission oil pan is a direct-fit replacement intended to restore a damaged factory pan. It installs in place of the original and is typically used when the stock pan is cracked, stripped, or leaking. The pan is described as made from quality materials and has been try-on tested for fit, which translates to straightforward bolt-on installation and a leak-free seal when paired with the correct gasket. Practical benefits include cost-effective aftermarket availability and a construction that reviewers report feels as strong as factory units. Notable limitations are that the drain and level plugs may use non-OEM sizes and some listings note the gasket, magnets, or the exact plug hardware are not always included, so you may need to source those separately. For a performance-focused owner wanting a reliable replacement that keeps the transmission sealed and serviceable, this pan offers factory-style function without the OEM price, but plan to verify plug sizes and buy any missing hardware before installation.
Best for: Performance-oriented buyers who prioritize reliable, factory-quality replacements that restore transmission integrity without paying OEM prices, and who are comfortable verifying fitment and sourcing any missing hardware.
Less Ideal for: Buyers who want a complete plug-and-play kit with every OEM-style fastener and accessory included should consider alternatives that bundle gasket, magnets, and matching OEM hardware.
- Direct replacement designed to match factory fit and mounting locations
- Construction described as durable and tested for leak-free performance
- Try-on testing reported to ensure good fitment with listed vehicle applications
- May not include gasket, magnets, or OEM-size drain/level plugs
- Some users report the drain/level plug sizes differ from factory hardware
Verdict: A durable, tested aftermarket transmission pan that delivers factory-style fit for Toyota vehicles at a lower cost but may require purchasing matching plugs or gasket separately.
4. MYSMOT Transmission Oil Pan with Drain Plug (fits select Lexus/Toyota models)
| Manufacturer | MYSMOT |
|---|---|
| OEM Part Number | 265-836, SK265836, 3510608010, 3510633050, 3510633040, 103372 |
| Fits Vehicles | Select Lexus and Toyota models listed by years in product description |
| Warranty | 3 Years (36 Months) Unlimited-mileage Quality Guarantee |
This stamped transmission oil pan replaces a damaged or leaking factory pan and is intended for direct fitment where the listed part numbers match. It includes a factory-style drain plug to simplify fluid changes and is finished with a protective coating to resist corrosion. Typical use is as a service replacement during a transmission fluid change or after impact damage to the original pan. The pan covers common fitments in Toyota and Lexus lineups and ships as a single unit without installation instructions, so plan for professional installation or basic mechanical experience. Practical benefits are straightforward: it restores fluid containment, provides an integrated drain for easier servicing, and the protective finish helps longevity compared with a bare replacement. Limitations are that fitment must be confirmed by part number before purchase, it does not include hardware or gaskets, and buyers should expect to source or reuse the correct gasket and torque specifications for proper sealing.
Best for: Budget-conscious owners seeking an affordable, straightforward replacement pan who prioritize function and cost savings over bundled accessories or installation support.
Less Ideal for: Shoppers who want a full hardware kit, pre-installed gasket, or vehicle-specific instructions should consider higher-end options or dealer parts instead.
- Direct-fit replacement for listed Lexus and Toyota part numbers, simplifying selection when matched
- Integrated drain plug makes fluid changes cleaner and faster
- Protective coated finish reduces corrosion risk compared with uncoated pans
- No installation instructions or gasket/hardware included
- Fitment depends on matching part numbers so not universal even within the Lexus IS family
Verdict: A low-cost, coated replacement transmission pan with a drain plug that restores serviceability and containment when the part numbers match your Lexus.
5. Dorman 265-811 Transmission Oil Pan with Drain Plug and Filter Assembly
| Material | Steel |
|---|---|
| Bolt Pattern (Number of Holes) | 16 |
| Position | Center |
| Model | 265-811 |
This Dorman transmission oil pan replaces a factory pan and is built to make transmission service cleaner and simpler. It installs in place of the original pan and includes a drain plug so fluid can be removed before lowering the pan, plus an integrated magnet, filter assembly, and gasket for a single-package repair. The pan is stamped steel with an E-coat finish to resist corrosion and road debris, and the included filter and gasket simplify a filter-and-pan service. In practice the drain plug removes the need to catch a full fluid spill during filter changes and lets you reuse the existing filter mounting pattern on compatible vehicles. Fitment notes and occasional minor interference (dipstick stop or bracket) mean a small modification may be needed on some vehicles, and some installers prefer to replace the crush washer on the drain bolt for a reliable seal. The pan is a practical, durable option when you want a serviceable, factory-replacement style pan rather than a custom or performance piece.
Best for: Reliability-focused buyers looking for a factory-style, serviceable replacement that reduces mess and simplifies routine transmission maintenance.
Less Ideal for: Owners seeking a performance or aftermarket deep-sump pan or a vehicle-specific OEM-specified part without any fitment adjustments should look elsewhere.
- Service-friendly integrated drain plug reduces fluid spills during pan removal
- Includes filter assembly, gasket, and magnet for a more complete repair
- E-coat finish and steel construction improve corrosion and impact resistance
- May require minor vehicle-specific modifications for clearance on some models
- Some buyers report no separate pan-to-transmission gasket included in certain cases
Verdict: A durable, service-friendly replacement transmission pan that makes filter changes cleaner and more convenient.
6. Dorman 265-866 Transmission Oil Pan
| Material | Steel |
|---|---|
| Included Components | Transmission Pan |
| Item Type Name | Automatic Transmission Oil Pan |
| Brand Name | Dorman |
This Dorman transmission oil pan is a straightforward factory-replacement style pan intended to replace a damaged or leaking original pan. Made from steel and finished in black, it installs like the stock unit and includes a drain plug and magnet in many applications for easier service. Typical use is as a direct swap during transmission repairs or fluid changes when the original pan is dented or leaking. Buyers will appreciate the heavy construction and confirmed-fit testing that reduce the chance of gasket leaks and speed installation. Several reviews note the included drain plug requires careful torque to seal and that the hex/allen head can be difficult to access with short tools, so plan for an extension or replacement bolt if you expect to service fluid frequently. Fitment must be confirmed for Lexus IS models in the article scope before purchase. The pan provides a practical, cost-effective solution for restoring transmission serviceability but may need minor user workaround for the drain bolt access and sealing.
Best for: Convenience-driven buyers who want a practical, ready-to-install transmission pan that restores leak-free operation with minimal fuss and fewer trips to a shop.
Less Ideal for: Owners planning frequent DIY fluid swaps or those who need an upgraded baffled or deep-sump performance pan should consider purpose-built alternatives.
- Steel construction offers durable, heavier-than-stock feel
- Designed as a direct replacement for a trouble-free fit
- Includes a drain plug and magnet for easier fluid service
- Quality tested for fit to reduce gasket leaks
- Drain plug uses an allen-style head that can be hard to torque and may strip with repeated service
- Some users report the drain plug gasket can leak unless tightened aggressively
Verdict: A durable, factory-style steel replacement pan that simplifies repairing a leaking or damaged transmission pan.
7. Dorman Transmission Oil Pan, Model 265-818
| Material | Steel |
|---|---|
| Model | 265-818 |
| Manufacturer | Dorman Products |
| Item Form | Oil |
| Number of Items | 1 |
This Dorman transmission oil pan is a direct replacement designed to restore a damaged factory pan and simplify fluid changes with a built-in drain plug. It is used by dropping the old pan, transferring the magnet if present, fitting a new gasket or sealant, and tightening the flange to spec. Notable features include stamped steel construction, a machined exterior finish, and try-on testing that aims to ensure fit. In practice the pan is thicker than many stock units and resists corrosion better than rusted originals, and several installers report a secure, leak-free seal when the drain plug is torqued correctly and a quality gasket or sealant is used. Limitations to note are that the pan does not include a magnetic sump insert and some buyers have swapped the supplied drain-plug washer or replaced the plug to eliminate minor seepage. Fitment must be verified for the target vehicle before purchase.
Best for: Risk-averse mainstream buyers who prioritize a reliable, factory-style replacement that reduces the chance of post-repair issues and simplifies routine transmission service.
Less Ideal for: Buyers seeking performance or vehicle-specific pans designed for Lexus IS models or those wanting integrated debris-capturing magnets and premium corrosion-resistant alloys should consider other options.
- Direct replacement designed to match factory fit and bolt pattern
- Stamped steel construction with a robust flange for improved durability
- Includes a threaded drain plug to simplify fluid changes
- Try-on tested by the manufacturer to confirm fit for listed transmissions
- No built-in magnet in the sump to catch metal debris
- Some users report the supplied drain plug washer can leak and may require replacement
Verdict: A sturdy, factory-style stamped steel replacement pan that restores fit and adds a drain plug to make transmission service easier.
Choosing the Right Lexus IS Transmission Pan: Key Factors to Consider
Fitment and Bolt Pattern
Correct fitment is the most important factor because a transmission pan must align with the factory bolt pattern and clearance points. A precisely matched pan reduces the risk of uneven sealing, stress on the transmission housing, and interference with surrounding components.
When a pan is designed to OEM mounting points, installation is faster and there is less chance of cross-threading or needing modifications. Fit accuracy also affects gasket compression and long-term sealing performance, which influences the likelihood of leaks during normal driving and thermal cycles.
Sealing Surface and Gasket Compatibility
The design and finish of the sealing surface determine how well the pan mates to the transmission case. A flat, machined flange with consistent gasket seating prevents high spots that can lead to seepage or leaks.
Consider whether the pan accepts a reusable gasket, a replaceable molded gasket, or requires RTV-type sealant. Compatibility with common replacement gaskets simplifies future service and reduces the risk of mismatched materials that could fail under heat and fluid exposure.
Drain and Service Features
A built-in drain plug or accessible service port greatly simplifies transmission fluid changes by minimizing spillage and reducing the need to fully remove the pan. Drain features make routine maintenance cleaner and faster for both DIY users and shops.
If the pan lacks a drain, full removal is required to change fluid, increasing labor and the chance of dropping debris into the transmission. Evaluate whether drain fittings are sized for standard fittings and whether they include a crush washer or seal to prevent weeping.
Material and Construction Quality
Materials such as stamped steel, cast aluminum, or heavier gauge alloys affect durability and corrosion resistance. Thicker materials resist denting from road debris and better withstand repeated installation cycles without deforming the sealing flange.
Construction quality also covers welds, coatings, and internal reinforcements. Corrosion-resistant finishes and robust welds extend service life, while poorly finished edges can damage gaskets or cause leaks over time. Choose a pan material that balances durability with weight and heat transfer characteristics suited to the vehicle.
Clearance and Heat Management
The pan must not interfere with suspension, crossmembers, or drain clearance under the Lexus IS. A low-profile pan may reduce ground clearance, while a deeper pan improves fluid capacity but can be more vulnerable to impacts.
Some pans are designed to help dissipate heat, either by material choice or added surface area, which can marginally aid transmission temperatures. When considering options, check for proper clearance and any design elements intended to aid heat dispersion without compromising underbody protection.
Installation Guidance and Torque Specs
Clear installation instructions and published torque specifications are important for achieving a reliable seal. Proper bolt sequence and torque values prevent warping of the flange and ensure even gasket compression.
Lack of torque guidance increases the chance of overtightening or uneven clamping, both of which can lead to leaks or damage. Look for pans that reference correct torque ranges and bolt patterns so installation can be performed confidently by a technician or a competent DIYer.
How We Chose the Best Lexus IS Transmission Pan
We focused on parts designed specifically for the Lexus IS platform and evaluated candidates using criteria that matter for day-to-day ownership and routine service. Primary factors included exact fitment to factory mounting points and bolt pattern, quality and type of sealing surface to reduce leak risk, and accessibility of the drain or service features to simplify fluid changes.We also considered material and construction for durability, resistance to corrosion, and whether the design helped with heat dissipation. Ease of installation and clarity of torque specifications or installation guidance were included because they affect how reliably the pan seals and how long a DIY or shop install will take. Finally, we looked at whether pans accepted common replacement gaskets and filters used on Lexus IS transmissions.Excluded from the evaluation were universal-fit pans, pans lacking clear fitment information for Lexus IS, and any parts without documented mounting specifications. We prioritized measurable fit and serviceability over marketing claims and avoided options without adequate technical data.
Our full evaluation process is outlined in our review methodology.
FAQ
How often should I check my Lexus IS transmission pan for leaks?
You should visually inspect the transmission pan at regular service intervals or whenever you notice fluid under the vehicle. Pay attention after long trips or towing, since heat cycles and load can reveal leaks. If you see any seepage around the pan flange or drain plug, address it promptly to prevent fluid loss and potential transmission damage.
Can I install a different style transmission pan on my Lexus IS?
You can install a pan of a different style only if it is specifically designed to fit the Lexus IS bolt pattern and clearances. Different pan depths or drain locations can affect ground clearance and serviceability, so verify dimensional compatibility. Avoid universal-fit pans that require modification, as they increase the risk of poor sealing or interference.
Do transmission pans come with the gasket included?
Some pans include a gasket or gasket surface treatment, while others require you to purchase a separate gasket or use a specified sealant. Check the product details to confirm what is supplied. Using the correct gasket material and ensuring the sealing surface is clean will help prevent leaks after installation.
Is a drain plug necessary on a transmission pan?
A drain plug is not strictly necessary, but it offers clear advantages for routine maintenance by allowing fluid changes without full pan removal. Drains reduce mess and shorten service time. If a pan does not have a drain plug, expect to remove the pan to change the fluid, which increases labor and the risk of contamination.
Will changing the transmission pan affect my vehicle warranty?
Warranty impacts depend on your vehicle's coverage terms and whether aftermarket parts are permitted. Generally, installing a properly fitting part that does not cause damage should not void unrelated warranty coverage. If in doubt, consult your warranty documentation or your dealer before modifying service components.
Conclusion
When choosing a transmission pan for a Lexus IS, prioritize accurate fitment, a reliable sealing design, and service-friendly features like a drain plug or clear access points. These elements reduce leak risk and make routine fluid changes easier.Balance material durability and clearance considerations against the benefits of added capacity or heat dissipation. Follow installation guidance and torque specifications to ensure a proper seal and long-term reliability.
Explore More:
- Check out all Lexus IS parts & accessories
- Explore Transmission Pans Maintenance & Repair Guides
- Explore Transmission & Drivetrain
- Browse all Auto Parts
