Replaces all eleven bearings in the Ford HF35 hybrid transaxle used in C-Max, Fusion Hybrid and Lincoln MKZ Hybrid, curing whine and shaft play.
The Ford HF35 is the power-split hybrid transaxle behind the 2.0L engine in the 2013-up C-Max Hybrid and C-Max Energi, the 2013-up Fusion Hybrid and Fusion Energi, and the Lincoln MKZ Hybrid. These cars rack up miles fast, many as taxis and rideshare cars, and a common complaint is a grinding, rubbing or whining noise from the transaxle that follows road speed. This 11-piece kit gives a rebuilder the full bearing set for that teardown in one box: sizes 6908, 6906, 6911, 6306, 6307, 60/22, R37-7, R60-44 and JLM506849.
The HF35 has no clutch packs or shift solenoids in the conventional sense. A planetary power-split gearset ties the engine, the generator and the traction motor together, and the computer blends their speeds to act like a continuously variable transmission. Everything turns on bearings: the motor and generator shafts, the transfer shaft that carries power toward the final drive, and the differential. Because the electric motor drives the wheels directly, those bearings spin any time the car rolls, even in electric mode with the engine off. When a race pits or a roller flats, you hear it as a noise that is present while moving and gone when stopped.
Ford addressed this exact pattern in service bulletins 20-2219 and 22-2396, which name the differential side bearings and the transfer shaft and housing as the likely cause on 2013-2020 Fusion and MKZ and 2013-2018 C-Max with the HF35.
Road test with the radio off and note whether the noise follows vehicle speed, then coast in Neutral; a noise that stays in Neutral while rolling is mechanical, not an engine or electrical issue. Rule out wheel bearings and tires with a lift and a stethoscope before you pull the transaxle. Drain the fluid and inspect it for metal. Our warning signs guide covers how to separate driveline noise from transmission noise. Note that Ford's bulletin calls for a remanufactured transaxle if the differential roller bearings show damage, so this kit is best for a shop or experienced builder doing a full teardown.
This kit is listed for the Ford HF35 hybrid transaxle in the C-Max Hybrid and Energi, Fusion Hybrid and Energi, and Lincoln MKZ Hybrid, model years 2013 and up. Ford revised parts within the HF35 run, and the later HF45 is a different unit, so check the identification tag on your transaxle, compare the bearing numbers in this kit with the ones you remove, or send us your year and VIN to confirm. More sets are in our rebuild kits category.
Before anything comes apart, mark and record every shim stack, because the case tolerances are tight and endplay must go back to the recorded value. Pull bearings with a proper bearing separator and puller set rather than prying, and press the new ones on square with a bearing race and seal driver set so you only load the race you are pressing. Check endplay and rotational drag before closing the case; our guide to thrust washers and endplay explains why that step matters. This is a bearing kit only: seals, shims and gaskets are not included and should be ordered alongside it. Flush the cooling circuit, then refill with Motorcraft MERCON LV, the fluid Ford specifies in its HF35 service bulletin.
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The 2013-up Ford C-Max Hybrid and C-Max Energi, the 2013-up Fusion Hybrid and Fusion Energi, and the Lincoln MKZ Hybrid. Check the transaxle ID tag or send us your VIN if you are unsure.
Eleven bearings in sizes 6908, 6906, 6911, 6306, 6307, 60/22, R37-7, R60-44 and JLM506849, covering the motor, generator, transfer shaft and differential positions.
No. It is bearings only. Order seals, gaskets and any shims you need separately, and record your original shim stacks before disassembly.
That pattern matches Ford bulletins 20-2219 and 22-2396 for the HF35, which point to the differential side bearings and transfer shaft. Rule out wheel bearings and tires first.
Motorcraft MERCON LV, the fluid listed in Ford's HF35 service bulletin. Flush the cooling circuit before refilling.
