30-spline input shaft. 10.75-inch bolt circle. 3200-3500 RPM stall This HoleShot 3500 fits 1984-93 GM TH700R4/4L60 automatic transmissions with 30-spline input shaft. This converter retains the lock-up feature. Holeshot torque converters are for...

GM 8.875-inch 12-bolt Car Differential Cover. Our engineers designed the line of Hi-Tek differential covers to not only look good but address a number of weaknesses of the factory stamped steel covers. First, they started by constructing the covers of...

GM Corporate 14-bolt (10.5-inch) Differential Cover. Our engineers designed the line of Hi-Tek differential covers to not only look good but address a number of weaknesses of the factory stamped steel covers. First, they started by constructing the...

8.2-inch, 8.5-inch & 8.6-inch 10-bolt Differential Cover. Our engineers designed the line of Hi-Tek differential covers to not only look good but address a number of weaknesses of the factory stamped steel covers. First, they started by constructing the...

GM 8.2-inch 10-bolt (Buick Olds, Pontiac) Differential Cover. Our engineers designed the line of Hi-Tek differential covers to not only look good but address a number of weaknesses of the factory stamped steel covers. First, they started by constructing...

GM 8.875-inch 12-bolt Truck Differential Cover. Our engineers designed the line of Hi-Tek differential covers to not only look good but address a number of weaknesses of the factory stamped steel covers. First, they started by constructing the covers of...

GM 9.5-inch 14-bolt Differential Cover. Our engineers designed the line of Hi-Tek differential covers to not only look good but address a number of weaknesses of the factory stamped steel covers. First, they started by constructing the covers of thick...

Fits 2001-2019 GM 2500/3500 Trucks with Allison Transmission. Our Hi-Tek deep transmission pans are constructed from A356-T6 aluminum and are cast with thick internal and external fins, adding additional strength and increased cooling properties. The...

Fits 2011 - 2021 Ford F250/F350 with 6R140 transmission Our Hi-Tek deep transmission pans are constructed from A356-T6 hardened aluminum and are cast with thick internal and external fins adding additional strength and increased cooling properties. The...

Fits 2019+ GM 1500 with 8L90E transmission Our Hi-Tek deep transmission pans are constructed from A356-T6 hardened aluminum and are cast with integral cooling fins for maximum temperature reduction and strength. The deep pan design increases fluid...

GM Corporate 14-bolt (10.5-inch) Differential Cover. Our engineers designed the line of Hi-Tek differential covers to not only look good but address a number of weaknesses of the factory stamped steel covers. First, they started by constructing the...

GM 8.2-inch, 8.5-inch & 8.6-inch 10-bolt Differentials. Our engineers designed the line of Hi-Tek differential covers to not only look good but address a number of weaknesses of the factory stamped steel covers. First, they started by constructing the...