Replacement sun gear upgrade kit for Ford 4R70W and 4R75 transmissions. Kit includes a new 31-tooth 1.167 sun gear plus a new thrust bearing with race. Designed as a direct replacement for the OEM/interchange numbers listed below. Constructed from steel and supplied as a new part.
BrandGFX, Ford
TypeSun Gear
Interchange Part Number9L3Z-7A399-B
Manufacturer WarrantyUnspecified Length
OE/OEM Part Number9L3Z-7A399-B, 9L3Z7A399B, 3L3Z-7D234-AA, 3L3Z7D234AA, 3L3Z-7D235-AA, 3L3Z7D235AA
Fitment TypeDirect Replacement
Items IncludedNew Sun Gear, New Thrust Bearing with Race
Manufacturer Part Number46186A
MaterialSteel
Superseded Part Number9L3Z-7A399-A
Vintage PartNo
Performance PartNo
UPCDoes not apply
Country of OriginUnited States
Items IncludedNew sun gear; new thrust bearing with race
MaterialSteel
Fitment TypeDirect Replacement
Manufacturer Part Number46186A
Interchange Part Number9L3Z-7A399-B
OE/OEM Part Number9L3Z-7A399-B, 9L3Z7A399B, 3L3Z-7D234-AA, 3L3Z7D234AA, 3L3Z-7D235-AA, 3L3Z7D235AA
Superseded Part Number9L3Z-7A399-A
Manufacturer WarrantyUnspecified Length
Vintage PartNo
Performance PartNo
UPCDoes not apply
Country of OriginUnited States