Service Bulletin - 4F27E - Ford (Automatic Transmission)

YOUR WARRANTY DEPENDS ON YOUR ADHERENCE TO THESE GUIDELINES

Updated Rear Cover
Due to premature rear cover failures in most Mazda applications, all of our remanufactured 4F27E (FN4A-EL) transmissions are updated with the improved Ford-designed rear cover.

MAZDA APPLICATIONS ONLY
The cooler return line must be relocated from the case to the end cover. During remanufacturing, the transmission is internally updated and the factory cooler line hole in the case is permanently sealed – all Ford applications will remain unmodified. Mazda units are updated to accept Mazda factory cooler line fittings (M14 x 1.50).

UPDATED COOLER PORT SHOWN IN RED

NOTE
If you install the return cooler fitting into the original case location there will be no lubrication provided to the rear of the transaxle and immediate failure will result and is not covered under your warranty.

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