OE Style Pump Gear Set, Late - E4OD/4R100

Sonnax now offers high-quality replacement gear sets for F5 and later E4OD pumps. Two designs are offered: a direct replacement gear set 36438A and an oversized gear set 36438AX-01K. Both meet or exceed OEM pump gear performance.

Features & Benefits

Oversized gear has improved fit and durability of pump-to-torque-converter interface.
Direct replacement gears will work with any F5 and later pump housings with no machining required.
Oversized version fits F5 and later pump housings with excessive wear by allowing pump housings to be refurbished by machnining the pump cavity.
Both gear sets are designed to meet or exceed OEM pump gear performance.

Note: In 1995 the E4OD pump was redesigned to utilize pump gears with 10 lobes on the outer gear. Prior to 1995 the outer pump gear had 11 lobes. The pump casting was also revised. Prior to 1995 the pump casting was designated as E9 or F1. Beginning in 1995 the casting designation was changed to F5 and is currently F8. The E9 and F1 E4OD pumps suffered from low pump output and should be replaced with an F5 or later model pump.