8F35 Planetary 2018-2019

This is a new, genuine Ford planetary gear kit for the 8F35 eight-speed, Ford part number JM5Z-7D491-C, which replaces the earlier JM5Z-7D491-A. It is listed for the early 8F35 vehicles: the 2018-2019 Transit Connect and the 2019 Ford Edge and Lincoln Nautilus. If an early unit is whining, has lost a gear, or came apart with a damaged gearset, and the number on your old part is 7D491, this is the factory replacement rather than a remanufactured set.

What this planetary does in an 8F35

The 8F35 gets eight forward speeds by holding and driving different members of its planetary gearsets with clutches and brakes. Each gearset is a sun gear, a ring gear and a carrier full of pinions spinning on needle bearings. When those pinions or their bearings wear, the set gets noisy under load and starts shedding metal, and that metal goes everywhere the fluid goes. Ford gives different gearsets different base numbers: 7D491 is this kit, while the output carrier named in TSB 22-2281 is a separate 7N473 part. Match the base number before you order.

Symptoms of a worn planetary in an early 8F35

• A whine or growl that rises with road speed and changes from gear to gear
• Loss of one or more gears while others still work
• Bright metal and needle bearing pieces on the pan magnet
• Slipping, harsh engagement and clutch codes once the debris reaches the valve body and frictions

How to confirm before you buy

Early units are exactly the ones Ford's bulletin targets. TSB 22-2281 covers 2019-2021 Transit Connect built on or before 20-Dec-2021 with slipping, harsh engagement and codes including P0730, P0751, P0752, P0756, P0757, P2700, P2701 and P0741. Its cause is worn needle bearings in the output planet carrier, and Ford fixes it with the JM5Z-7N473-C output carrier, not this kit. Read our 8F35 TSB guide to see whether your vehicle and codes match first. If the unit is already apart, the deciding check is physical: compare the Ford number stamped or tagged on the damaged gearset with JM5Z-7D491, look for blued or loose pinions, and spin each pinion to feel for rough bearings.

Fitment

The kit is listed for the 2018-2019 Ford Transit Connect, the 2019 Ford Edge and the 2019 Lincoln Nautilus with the 8F35. Transmission Digest dates the 8F family to 2019 production, so if your Transit Connect is titled as a 2018, confirm the transmission tag reads 8F35 before ordering. Later Edge, Escape, Bronco Sport and Maverick units may use the same number or a newer one; the reliable way to know is to match the part number from your old gearset or send us the year and VIN. Browse every early and late part on our 8F35 parts page.

Install notes

• A gearset failure fills the unit with metal. Replace frictions with embedded debris, the filter and all seals; the 8F35 overhaul kit for 2018-2021 is a good base for early units.
• Inspect the other gearsets and the output carrier while you are in there. On a build date covered by the TSB, replacing the output carrier at the same time saves pulling the transmission twice.
• Check the pump stator to input shaft bushing. Ford's procedure calls for a new pump and converter if it is worn and converter clutch codes were set; otherwise flush the converter.
• Clean the valve body and back-flush the cooler before the unit goes back in.
• Hold the pump drive chain in place and protect the turbine shaft seal when the converter housing goes on, as the Transmission Digest article on 8F35 rebuilds shows.
• Refill with Motorcraft Mercon ULV and update the PCM software. Adaptive shifting relearns over the first few days of driving.

The kit is new Ford stock, ships from the USA, and carries our 1-year warranty.

Is JM5Z-7D491-C the same as the output carrier Ford uses for TSB 22-2281?

No. The bulletin's causal part is the output planetary carrier JM5Z-7N473-C. This kit is a different Ford number. Check which part failed in your unit before ordering.

Does it replace JM5Z-7D491-A?

Yes. JM5Z-7D491-C supersedes the earlier -A part number, so it is the current service part for an early unit that originally had the -A.

Which vehicles is it listed for?

The 2018-2019 Transit Connect, the 2019 Edge and the 2019 Nautilus with the 8F35. For other years, match the number on your old part or send us your VIN.

Is this new or rebuilt?

New genuine Ford. It is not a remanufactured or aftermarket gearset.

Do I need anything after installing it?

Fill with Mercon ULV, load the latest PCM software and let the adaptive strategy relearn. Expect firmer shifts for a few days.

• Ford 8F35 Transmission Problems: What the Four Ford Bulletins Actually Say