Diamond T Torque Converter, Ford (1989-05) 5.0/5.4/5.8 E-Series & F-Series (E4OD/4R100) Stage 1 (Single Disk)

The Diamond T Torque Converter, Ford (1989-05) 5.0/5.4/5.8 E-Series & F-Series (E4OD/4R100) Stage 1 (Single Disk) – FS89SV8-1 is an upgraded replacement for the common 4-stud converters used behind Ford 5.0L, 5.4L and 5.8L gas engines in E4OD and 4R100 applications. With a 12-3/4" diameter, 31-spline input, 1.375" pilot (1-1/4" long), milled hub flats and an 11-3/8" 4-stud bolt circle, it matches key OE dimensions for proper fitment and driveline alignment.

This Stage 1 converter uses a single-disk lockup design to provide increased holding capacity and durability compared to typical stock-style units, making it well suited for trucks and vans that see real towing, hauling or heavy daily use. It is engineered to work in the 1989-2005 Ford E-Series and F-Series platforms equipped with the E4OD or 4R100, specifically in 5.0L, 5.4L and 5.8L gas configurations that use the 4-stud mounting pattern.

FS89SV8-1 is intended to replace several Ford OE torque converter part numbers, including 1C3Z-7902-CARM / 1C3Z7902CARM, XL3Z-7902-DARM / XL3Z7902DARM, F81Z-7902-CARM / F81Z7902CARM and XL3Z-7902-BARM / XL3Z7902BARM. It also covers a wide range of Ford identification codes such as A, E, F, H, M, O, U, AA and SS commonly stamped on E4OD/4R100 gas converters. As with all Diamond T products, this converter is built with a focus on strength, longevity and real-world performance—American Made, Because It Matters.