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Owning an Infiniti G35 means keeping the transmission in good health to preserve drivability and avoid costly repairs. Choosing the right transmission pan affects cooling, fluid capacity, and how simple routine maintenance will be. This guide highlights the top shortlisted transmission pans that fit the Infiniti G35 and explains the practical differences that matter for installation and service.We evaluated pans for build quality, drain features, and compatibility to help you pick an option that simplifies fluid changes and helps control operating temperatures. Read on to see the top picks and what to look for before you buy.
Looking for other parts? See all Infiniti G35 parts & accessories.
Top Picks at a Glance
| Best Overall The best all-around choice for most situations | Dorman Transmission Oil Pan 265-818 |  |
| Best Quality Built to a higher standard if you want something more solid | Dorman 265-819 Transmission Oil Pan — Replacement for Select Infiniti/Nissan Models |  |
| Best Value The sweet spot between price and what you get | Dorman 265-844 Transmission Oil Pan (replacement) |  |
| Best Budget The cheapest option that still gets the job done reliably | Slakerbe Transmission Oil Pan Sump with Drain Plug for Infiniti/Nissan (OEM 31390-1XJ0C) |  |
| Most Popular A crowd favorite that many people choose with confidence | Getfarway Transmission Oil Pan for Infiniti G35 (Replacement 31390-1XJ0C) |  |
| Best Seller A high-volume bestseller chosen again and again | Marketplace Auto Parts Automatic Transmission Pan for 2003–2008 Infiniti G35 |  |
1. Dorman Transmission Oil Pan 265-818
| Material | Steel |
|---|---|
| Manufacturer | Dorman Products |
| Model | 265-818 |
| Item Form | Oil |
| Unit Count | 1.0 Count |
This Dorman transmission oil pan is a direct-fit replacement designed to replace a damaged factory pan on compatible vehicles. It is a stamped steel pan with a machined exterior and comes with a drain plug installed, so it simplifies a fluid change compared with pans that need a separate plug. Typical use is to restore leak-free service after corrosion or damage to the original pan and to provide a more robust flange for a proper seal during filter and fluid service. Owners report the pan is thicker and heavier than many aftermarket alternatives, accepts factory-style gaskets or RTV, and holds an extra quart of fluid on some transmissions which can reduce refill hassle. Common caveats are that the supplied drain-plug sealing washer may need replacement for a perfect seal and the pan does not include a magnet to capture metal debris, so you should transfer the factory magnet or add an aftermarket magnetic drain plug. Fitment must be verified for your G35 transmission variant before ordering.
Best for: Balanced owners looking for a reliable, factory-style transmission pan replacement that restores leak-free service and simplifies routine fluid and filter maintenance.
Less Ideal for: If you prioritize an integrated magnetic pickup or want a pan specifically modified for performance cooling you should consider purpose-built aftermarket pans with those features instead.
- Direct replacement design intended to match factory fit for straightforward installation
- Durable stamped steel construction and robust flange reduce deformation and rust issues
- Includes a drain plug preinstalled to simplify fluid changes
- Heavier, thicker construction can improve long-term durability compared with thin aftermarket pans
- No factory-installed magnet to capture metal particles
- Some users report the supplied drain-plug washer may leak and require replacement
Verdict: A sturdy, direct-fit steel replacement pan that restores factory-style function and durability for compatible transmissions.
2. Dorman 265-819 Transmission Oil Pan — Replacement for Select Infiniti/Nissan Models
| Manufacturer | Dorman Products |
|---|---|
| Model | 265-819 |
| Bolt Pattern (Number of Holes) | 21 |
| Position | Center |
This Dorman transmission oil pan is a straightforward factory-replacement style pan intended to replace a damaged original on compatible Infiniti and Nissan vehicles. It is used when the original pan is dented, cracked, or leaking and you want a like-for-like repair without modifying the transmission. The pan is manufactured to provide reliable, leak-free service and has been try-on tested for fitment on the listed models. Notable practical features include a ready-to-paint exterior and a common 21-bolt pattern for correct alignment. Buyers will appreciate the sturdy construction, ease of installation reported by installers, and compatibility with factory gaskets and magnets transferred from the old pan. Limitations to consider are that the pan may be shallower than some factory pans, reducing fluid capacity compared with original parts, and it does not include magnets or other hardware, so reuse or separate purchase may be needed for those items.
Best for: Performance-oriented owners who prioritize a reliable, factory-style replacement to restore transmission integrity and keep a high-performing Infiniti G35 running without costly transmission removal.
Less Ideal for: Drivers seeking upgraded capacity, integrated magnetic debris traps, or performance-enhancing pans should consider aftermarket performance-specific pans rather than this direct-replacement model.
- Direct replacement fit for listed Infiniti/Nissan models, reducing install hassle
- Durable construction and quality testing for leak-free service
- Ready-to-paint exterior allows finish matching to underbody appearance
- Common 21-bolt pattern aligns with factory bolt locations for straightforward installation
- Does not include magnets or drain hardware, so additional parts may be needed
- Reported shallower depth than some factory pans, which can reduce fluid capacity
Verdict: A dependable, factory-style replacement pan that restores fit and leak-free service for compatible Infiniti transmissions.
3. Dorman 265-844 Transmission Oil Pan (replacement)
| Brand | Dorman |
|---|---|
| Model | 265-844 |
| Exterior | Painted |
| OEM Part Number | 103376; SK265844; 313901XF0B |
This Dorman replacement transmission pan is built to swap in where a damaged factory pan needs replacing and to make fluid service easier with its integrated drain plug. It is typically used when dropping a leaking or dented pan or when converting a non-drain OEM pan to one with a drain to simplify fluid changes. The pan is made from stamped metal with a painted exterior and is marketed as a bolt-on fit that matches the factory hole pattern referenced for vehicles like the Nissan Altima. Practical benefits include easier fluid changes thanks to the drain plug, a fit that reviewers report aligns with factory bolt patterns, and a construction thickness similar to original pans. Limitations to note are fitment variability across transmissions and model years and the need to verify bolt count and guide pin locations before ordering for an Infiniti G35 application; some buyers also reported light cosmetic scratches on arrival. Successful installation also requires replacing the gasket and following the correct bolt torque and tightening sequence to avoid leaks.
Best for: Practical optimizers looking for a cost-effective, service-friendly replacement who prioritize easier maintenance and straightforward mechanical fixes over OEM brand loyalty.
Less Ideal for: Buyers who cannot confirm the exact transmission bolt pattern or prefer purchasing parts explicitly listed for Infiniti G35 without any fitment checks should consider alternatives sold specifically for that vehicle.
- Adds a serviceable drain plug to simplify transmission fluid changes
- Stamped metal construction with painted finish similar to factory pans
- Matches factory bolt pattern when the correct transmission variant is selected
- Reported to fit and seal reliably when proper gasket and torque procedure are used
- Fitment differs between transmission variants so verification is required before purchase
- May arrive with minor cosmetic scratches
Verdict: A budget-friendly, service-oriented replacement pan that adds a drain plug and matches factory fit when the correct transmission variant is chosen.
4. Slakerbe Transmission Oil Pan Sump with Drain Plug for Infiniti/Nissan (OEM 31390-1XJ0C)
| Manufacturer | Slakerbe |
|---|---|
| Model | Transmission Oil Pan |
| Manufacturer Part Number | QB2370X-US-HWC-TN |
| OEM Part Number | 31390-1XJ0C, 313901XJ0C |
This transmission oil pan is a straightforward, budget-focused replacement for Infiniti G35 owners that need a factory-style sump without paying OEM prices. It is sold as a single molded pan with a drain plug and is intended to replace part number 31390-1XJ0C. Installation is typical of a transmission pan swap: drop the old pan, replace the gasket and hardware, and fit the new unit. The listing states the pan matches original mounting points and can help address leaks or low fluid conditions when the original pan is damaged. The pan is described as painted and made to match the original fit; the included drain plug simplifies fluid changes compared with pans that require full removal. Limitations are its aftermarket origin and mixed material descriptions in the listing, so buyers who want exact factory-material match or documented durability testing may prefer a factory replacement. For routine repairs or a cost-conscious rebuild, this pan is a practical choice that gets the job done.
Best for: Budget-conscious Infiniti G35 owners who need an affordable, direct-fit pan to stop leaks or replace a damaged sump and prefer a simple repair that restores serviceability without buying OEM parts.
Less Ideal for: Drivers seeking a verified factory-material replacement or an upgraded heavy-duty pan for high-performance or towing use should consider factory or premium aftermarket options instead.
- Compatible with Infiniti G35 fitment and lists OEM part number 31390-1XJ0C for direct replacement
- Includes a drain plug to make transmission fluid changes easier
- Painted finish helps resist surface corrosion and matches factory appearance
- Low-cost aftermarket option that reduces repair expense compared with factory pans
- Aftermarket part with unclear material specifics and limited durability documentation
- May not exactly match factory material characteristics or long-term corrosion resistance
Verdict: A cost-effective, direct-fit replacement transmission pan for Infiniti G35 owners who prioritize price and basic functionality.
5. Getfarway Transmission Oil Pan for Infiniti G35 (Replacement 31390-1XJ0C)
| Manufacturer | Getfarway |
|---|---|
| Model | 31390-1XJ0C 31390-1XJ0A |
| Exterior | Metal |
| Manufacturer Part Number | 313901XJ0C 313901XJ0A |
This Getfarway transmission oil pan is a direct-replacement metal pan offered to fit Infiniti G35 models that use part numbers 31390-1XJ0C or 31390-1XJ0A. It installs in place of the factory pan and is intended for routine transmission service or after repair when the original pan is damaged or leaking. The listing emphasizes durable construction and manufacturing inspection, which suggests it will withstand normal road use and provide a reliable seal when paired with a proper gasket and correct torque sequence. As an aftermarket part, it lets owners replace a corroded or dented pan without requiring a used factory unit. Limitations include typical fitment checks before purchase since the product covers several model years and does not include detailed fitment notes in the description, and the listing does not show an integrated drain plug or internal features like a magnet or screen, so additional parts or inspection may be needed during service.
Best for: Convenience-driven owners who want a straightforward, ready-to-install replacement pan for routine transmission service on an Infiniti G35 without sourcing a used factory unit.
Less Ideal for: Owners seeking pans with factory-added features like an integrated drain plug, screen, or proprietary baffling should consider alternative or upgraded options.
- Direct-replacement design matching Nissan/Infiniti part numbers 31390-1XJ0C/1XJ0A for simpler fitment
- Metal construction intended for durability and resistance to road debris
- Sold as a standalone pan for quick swap during transmission service or repair
- Listing does not specify an integrated drain plug or internal magnet for fluid management
- Fitment details are general across model years so buyers must verify part number compatibility before purchase
Verdict: A durable, metal direct-replacement transmission pan that lets Infiniti G35 owners quickly restore a damaged or leaking factory pan with a ready-fit aftermarket option.
6. Marketplace Auto Parts Automatic Transmission Pan for 2003–2008 Infiniti G35
| Compatible Vehicles | 2003 – 2008 Infiniti G35 |
|---|---|
| Brand | Marketplace Auto Parts |
| Item model number | W0111-N568478 |
| Manufacturer Part Number | W0111-N568478 |
This transmission pan is a straightforward factory-replacement style part intended to replace a damaged or leaking pan on 2003–2008 Infiniti G35 models. It installs in place of the original pan and is used when servicing the transmission for fluid changes or to fix leaks from dents or corrosion. The listing indicates vehicle compatibility and the product is sold by a parts specialist brand, which simplifies fitment decisions for owners who want a like-for-like swap. Practical benefits include restoring a proper seal to prevent fluid loss and providing the correct mounting pattern for factory drain plugs and sensors. The main limitations are that this is a basic replacement pan rather than an upgraded performance or heavy-duty design, so it will not add cooling capacity or extra protection against impacts. Buyers should also confirm fit and inspect for any included gasket or hardware before installation because those items are not explicitly detailed in the product information.
Best for: A cautious, risk-averse buyer who prioritizes an exact, factory-style replacement to restore a leaking or damaged transmission pan without aftermarket modifications.
Less Ideal for: Drivers looking for improved cooling, extra sump capacity, or heavy-duty protection should consider aftermarket performance pans instead.
- Made as a direct-fit replacement for 2003–2008 Infiniti G35 transmissions
- Restores proper sealing to stop leaks and allows standard fluid changes
- Sold by a specialist parts brand familiar with replacement drivetrain components
- Fits the factory mounting pattern so sensors and drain plug positions align
- No indication of upgraded cooling fins or reinforced construction for heavy use
- Product description does not clearly list whether gasket or hardware are included
Verdict: A simple, factory-style replacement pan that restores sealing and fit for 2003–2008 Infiniti G35s but does not offer performance upgrades.
Choosing the Right Infiniti G35 Transmission Pan: Key Factors to Consider
Material and Heat Dissipation
The material of the transmission pan affects both durability and how well it sheds heat. Steel pans are typically rugged and resist impact, while aluminum pans conduct heat more effectively, which can help lower fluid temperatures during heavy use.
Consider how often you drive aggressively or tow, because higher operating temperatures can shorten fluid life. A pan that improves cooling can reduce thermal stress on internal components and extend fluid change intervals when other maintenance is up to date.
Drain Plug and Serviceability
A built-in drain plug makes fluid changes faster, cleaner, and less messy compared with fully dropping the pan. Look for a robust plug with a crush washer or a reliable sealing design to avoid leaks after repeated service.
Also evaluate how accessible the plug is once installed. A well-placed drain plug reduces time spent under the car and lowers the chance of spilling transmission fluid during routine maintenance.
Fitment and Bolt Pattern Accuracy
Accurate flange dimensions and bolt-hole alignment are essential to ensure a leak-free installation without modifications. A pan that matches the factory bolt pattern reduces installation time and minimizes the risk of cross-threading or improper sealing.
If a pan requires slight trimming or adjustment, that adds labor and can compromise sealing surfaces. Prioritize pans that specify compatibility with the Infiniti G35 and provide clear installation guidance.
Gasket Interface and Sealing
The joining surface between the pan and the transmission housing is where leaks most commonly occur. A good gasket design or a pan with a pre-formed sealing surface reduces the chance of a transmission pan leak and makes reassembly more reliable.
Consider whether the pan uses a reusable molded gasket, a replaceable paper or rubber gasket, or requires sealant. Ease of obtaining a replacement transmission pan gasket and the long-term sealing performance should factor into your choice.
Capacity and Fluid Management
Some aftermarket pans increase fluid capacity, which can provide additional cooling mass and slightly longer intervals between fluid replacements. Increased capacity can also change fluid circulation characteristics, so understand how much additional fluid the pan holds.
Avoid assuming bigger is always better. Confirm how added capacity affects fill levels and whether the vehicle's fill and check procedures remain straightforward after installation.
Durability and Corrosion Resistance
Consider the pan's resistance to corrosion and its ability to withstand road debris. Coatings, anodizing, or thicker metal can improve lifespan and appearance, particularly in wetter climates or on salted roads.
Durability also affects how well threaded drain plugs and fastener holes hold up after repeated service. Choose a pan with robust finishes and construction so routine removal and reinstallation do not cause damage over time.
How We Chose the Best Infiniti G35 Transmission Pan
We focused on transmission pans that are specifically designed to fit the Infiniti G35 and meet key service and durability expectations. Primary evaluation criteria included material and construction for heat dissipation and durability, the presence and quality of a drain plug to simplify fluid changes, and flange and bolt-hole accuracy to ensure proper fit without modification. We also considered gasket-replacement friendliness and accessory compatibility for routine maintenance, along with reported resistance to leaks under normal operating torque.Products were excluded if they required vehicle-specific modification, lacked clear compatibility with the Infiniti G35, or did not provide clear specifications for bolt patterns and torque guidance. We prioritized pans that balance serviceability, sealing reliability, and thermal performance so buyers can choose based on installation ease and long-term durability.
Our full evaluation process is outlined in our review methodology.
FAQ
How often should I change the transmission fluid when installing a new pan?
Installing a new pan is a good opportunity to change the transmission fluid, and many technicians recommend replacing fluid whenever the pan is removed. After installation, follow the vehicle manufacturer's suggested interval and monitor fluid condition, since different driving habits and pan capacities can influence how frequently changes are needed.
Can I reuse my old gasket with a replacement pan?
Reusing an old gasket is not usually advised because gaskets compress and conform to surfaces over time. For a reliable seal and to reduce the chance of a transmission pan leak, use a new gasket or sealing method specified for the replacement pan.
Are drain plugs reliable long term, or do they tend to leak?
Drain plugs can be reliable if they use proper sealing methods such as crush washers or integrated O-rings and if they are torqued to the correct specifications. Over time threads and sealing surfaces can wear, so inspect the plug and washer during each service and replace components that show wear.
Will a larger capacity pan affect my vehicle's shift quality?
A larger capacity pan mainly affects fluid volume and cooling, and it does not directly change shift mechanics. However, different fluid levels and cooling characteristics can indirectly influence operating temperatures and fluid properties, which in turn can affect performance. Make sure any change in capacity is accounted for when checking fluid level.
What should I know about torque specs when installing a transmission pan?
Bolt torque matters to prevent leaks and avoid warping the pan flange. Follow the vehicle-specific transmission pan torque specs and use a proper torque sequence to ensure even compression of the gasket. If manufacturer torque specs are not provided with the pan, consult the service manual for the vehicle.
Conclusion
Focus on fitment, sealing, and serviceability when choosing a transmission pan for an Infiniti G35. A pan that matches bolt patterns, includes a reliable drain solution, and provides a good gasket interface will simplify maintenance and reduce the chance of leaks.Weigh tradeoffs between material, added capacity, and corrosion resistance based on how you drive and where you store the vehicle. Prioritize options that make routine transmission fluid changes easier while preserving proper sealing and heat management.
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