6F35 Transmission Master Rebuild Kit, 2009-2017 Ford

A master rebuild kit for the Ford 6F35 and 6F35E front-drive six-speed, cross-referenced to B204820C, B204880C and W204881C. It is built around the complete 6F35 seal set, with dual-ring seals on the rotating circuits, and packs out at about 9.5 lb.

Listed fitment: 2009-2017 Ford Edge, Escape, Fusion and Explorer with the 1.5L, 1.6L, 2.0L, 2.3L, 2.5L, 2.7L, 3.0L or 3.5L engine, 2015-2017 Lincoln MKC 2.0L and 2.3L, and 2009-2011 Mazda Tribute, Mercury Mariner and Mercury Milan 2.5L and 3.0L.

The 6F35 commonly comes in with harsh or flared 2-3 and 3-4 shifts, a slip into sixth, or a no-reverse after the low/reverse clutch and its seals give up. Worn sealing rings bleed apply pressure away from the clutches, and the solenoid body then compensates until it cannot, which is why a full seal replacement is the core of the job.

On the bench, check the pump, the direct and overdrive drums, the one-way clutch and the valve body bores before you commit to the rebuild. Replace every seal and sealing ring, set clutch clearances as you assemble, and flush the cooler. Refill with Mercon LV and run the adaptive relearn with a scan tool, since the 6F35 relies on learned shift values.