Drive Chain with Round Pins (7/8" Wide) for TH440-T4, 4T60E and compatible transmissions.

This high-quality replacement drive chain is a direct fit for GM TH440-T4 (440-T4), 4T60, 4T60E, 125C and 3T40 automatic transmissions. It replaces OEM part number 8660099 and B-W HV-018.

Designed with round pins and a full 7/8" width, this chain delivers reliable power transfer from the torque converter to the gearsets and final drive. It is the perfect choice when rebuilding or repairing your transmission to eliminate noise, restore smooth shifting, and ensure long-lasting performance.

Direct replacement for OEM # 8660099 (HV-018)
7/8" wide with round pins – fits TH440-T4, 4T60, 4T60E, 125C & 3T40 transmissions
Precision-engineered for 1984-2001 GM FWD applications
Restores smooth power transfer and quiet operation
High-quality aftermarket chain built to exact OEM specifications
Ideal for transmission rebuilds or to eliminate noise and performance issues from worn drive chain

Fits 1984-2001 GM front-wheel-drive vehicles equipped with these transmissions (including select Buick, Chevrolet, Oldsmobile, Pontiac, and Cadillac models). Exact OEM specifications guarantee proper fit and function – no modifications required.

Key features include premium materials for superior strength and durability. Whether you are a professional technician or a DIY enthusiast performing a transmission overhaul, this chain is an essential component to bring your vehicle back to peak operating condition.