Complete filter and pan gasket kit for the Ford 10R140 in 2020-up 6.7L Powerstroke Super Duty trucks, so a fluid-and-filter service seals back up clean.
Towing with a 6.7L Power Stroke puts more heat into the 10R140 ten-speed than almost any other duty a pickup sees, and hot fluid is what wears out a transmission filter and a pan gasket. This DF-440 kit is the service set for 2020 through 2025 F-250, F-350, F-450 and F-550 diesel trucks: one internal filter and one NBR rubber pan gasket, sized so the pan goes back on the case sealed and the pump draws through clean media.
Everything the pump sends to the valve body passes through this filter first. In the 10R140 that matters more than in an older four- or five-speed, because the shift clutches are controlled by direct-acting solenoids with a very short valve stroke. Fine clutch material or bearing wear that gets past a tired filter ends up in those clutch control valves and in the line pressure circuit, where a little varnish or grit is enough to make shifts flare or bang. Ford catalogs the factory part as a filter and screen assembly (LC3Z-7G186-A) that sits inside the pan, and the pan itself seals to the case through a single molded gasket. The gasket in this kit is NBR (nitrile) rubber, which resists hot ATF without shrinking the way cork or paper can.
Check the fluid level at operating temperature and look at the condition of what comes out. Dark, burnt-smelling fluid or a pan magnet coated in heavy paste means it is past due. A pan full of friction chunks or metal flakes is a different story: a new filter will not repair worn clutches, and if shifts are already harsh or erratic, read through our harsh or delayed shift walkthrough, which covers the same ten-speed control design, before you spend money on service parts alone. For pan leaks, clean the area and confirm the fluid is coming from the rail and not a cooler line or the case connector.
The DF-440 kit is listed for the 10R140 ten-speed in 2020-2025 Ford F-250, F-350, F-450 and F-550 Super Duty trucks with the 6.7L Power Stroke diesel. The gas 6.2L, 6.8L and 7.3L trucks also use a 10R140, but this kit is listed for the diesel line only. If you have a gas truck or a medium-duty chassis, the 10R140 filter and oil pan gasket kit (LC3Z-7G186-A replacement) carries the broader listing. Not sure which transmission you have? Check the build tag on the case or send us your year and VIN.
If your pan is dented or the rail is distorted, swap in the 10R140 deep cast aluminum pan during the same service for added fluid capacity and a flat sealing surface. If the old fluid was badly burnt and the truck already shifts poorly, plan on the 10R140 8-piece solenoid pack rather than hoping new fluid alone fixes it, and reset adaptive values after either job.
| Transmission | Ford 10R140 (10-speed automatic) |
| Kit type | Filter and pan gasket service kit |
| Fits | Ford F-250 / F-350 / F-450 / F-550 6.7L Powerstroke, 2020-2025 |
| Gasket material | NBR rubber |
| Part number | DF-440 |
| Weight | 2.53 lb |
This kit is listed for 2020-2025 6.7L Power Stroke trucks. Gas trucks with the 6.2L, 6.8L or 7.3L also use a 10R140, but for those we recommend our LC3Z-7G186-A replacement kit, which lists the gas engines. Send your VIN if you want us to confirm.
Follow the severe-service schedule in your owner manual if you tow regularly, plow, or idle for long periods. Change the filter and gasket any time the pan comes down, since the gasket is the part most likely to leak after reuse.
Mercon ULV. The 10R140 is designed around that ultra-low-viscosity fluid, and a thicker or universal ATF can change shift timing. Set the level hot with the engine running.
No. Install the gasket dry on clean, oil-free surfaces. Sealant can push into the groove and cause a leak, and it adds debris to a brand-new filter.
Only if the cause was restricted flow or contaminated fluid. Harsh shifts on a 10R140 often need an adaptive reset or a solenoid or clutch repair. Look at the condition of the old fluid and pan debris before deciding.
