Transmission Oil Pan - Infiniti Q50/Q60/FX/G37, Nissan 370Z/Armada/Titan (OE 313901XJ0A)

A Transmission Oil Pan Built to OE 313901XJ0A

This is a steel transmission oil pan, OE number 313901XJ0A, covering a long list of Infiniti and Nissan models that share the same automatic transmission housing across roughly a decade and a half of production. If your old pan is cracked, corroded, or leaking from a gasket surface that's been warped by one too many drain-and-fill jobs, this is a direct replacement rather than a universal-fit pan you'd have to modify.

What the Pan Actually Does

The transmission oil pan bolts to the bottom of the transmission case and holds the reservoir of fluid that lubricates and cools everything inside — the clutch packs, gears, and valve body all depend on a steady supply of clean fluid, and the pan is what contains it and, on most transmissions, houses the fluid filter and magnet that catches metal debris. A pan that's leaking isn't just messy; it means your transmission is slowly running low on the fluid it needs, and low fluid is a fast way to cook a transmission that would otherwise have lasted well past 200,000 miles.

Where This Fits

This pan is built for a wide range of Infiniti and Nissan vehicles that shared this transmission generation: Infiniti EX35 (2010-2012), EX37 (2013), FX35 (2009-2012), FX37 (2013), FX50 (2009-2013), G25 (2011-2012), G35 (2008), G37 (2008-2013), M35 (2008-2010), M35h (2012-2013), M37 (2011-2013), M45 (2008-2010), M56 (2011-2013), Q40 (2015), Q50 (2014-2022), Q60 (2014-2015 and 2017-2021), Q70 and Q70L (2014-2019), QX50 (2014-2017), QX56 (2011-2013), QX70 (2014-2017), and QX80 (2014-2022) — plus the Nissan 370Z (2009-2020), Armada (2017-2022), NV (2017-2021), and Titan (2016-2019). That's a genuinely long list, which tells you this was a transmission platform Nissan reused heavily rather than redesigning every model year. Still, with a range this wide, it's worth confirming the OE number on your current pan matches before ordering — Nissan and Infiniti did make some running changes across these years.

OE and Interchange Numbers

This pan is built to OE numbers 313901XJ0A, 313901XJ0C, 31390-1XJ0C, and 31390-1XJ0A. Any of these stamped or listed on your original pan confirms this is the correct replacement.

Specifications

• Type: Transmission oil pan
• Material: Steel
• Fitment type: Direct replacement
• Condition: New

Signs Yours Needs Replacing

Fluid spots under the front-center of the vehicle, a transmission that runs hotter than usual, or fluid that looks noticeably low on the dipstick despite no obvious external leak are all reasons to check the pan and its gasket. Wikipedia's overview of the automatic transmission covers how these systems use fluid for lubrication, cooling, and hydraulic clutch actuation, which is useful background if you want to understand why keeping this pan sealed matters as much as it does.

Installation

Replacing a transmission pan means draining the old fluid, removing the pan bolts, cleaning the gasket surface on the transmission case, and torquing the new pan down evenly with a fresh gasket or sealant as your vehicle calls for. We'd recommend professional installation here, mainly because getting the fluid type, fill level, and (on many of these transmissions) the fill procedure right matters as much as the pan swap itself — overfilling or underfilling can cause shifting problems that have nothing to do with the pan.

Ordering

This transmission oil pan is in stock and ready to ship. If you're not sure this matches your specific Infiniti or Nissan model and year, our Request a Part page is the fastest way to confirm before you order. Our Warranty and Returns pages cover what to do if the fitment isn't right.

Related Parts

This pan is filed under our transmission and drivetrain collection and our Nissan collection. If you're doing a full transmission service, it's worth picking up a fresh filter and the correct fluid at the same time rather than just the pan on its own.