LS Rear Main Seal & Oil Pan Alignment Tool Kit for GM LS Engine 4.8 5.3 5.7 6.0

Rear Main Seal & Oil Pan Alignment Tool Kit for GM LS Engines

This rear main seal and oil pan alignment tool kit for GM LS engines positions the rear cover and oil pan gasket correctly during rebuilds and seal replacements on 4.8, 5.3, 5.7, and 6.0 liter powerplants.

Overview

This rear main seal and oil pan alignment tool kit is made for GM LS engine builders who need the rear cover and oil pan seated squarely during service. The kit holds the rear main seal housing and oil pan rail in correct alignment so gaskets seal properly and leaks stay away. It suits engine rebuilders, swap installers, and anyone refreshing a 4.8, 5.3, 5.7, or 6.0 liter LS.

Built For Performance

• Aligns the rear main seal cover squarely on the crankshaft centerline
• Positions the oil pan rail evenly so the gasket seats without distortion
• Works across the common 4.8, 5.3, 5.7, and 6.0 liter LS displacements
• Rugged construction holds up to repeated shop use
• Helps prevent rear seal and pan gasket leaks after assembly
• Straightforward setup for both first-time and experienced builders

Fits These Machines

• for GM LS 4.8L engines
• for GM LS 5.3L engines
• for GM LS 5.7L engines
• for GM LS 6.0L engines

On-The-Job Use

• Engine rebuilds and short block assembly
• Rear main seal replacement jobs
• Oil pan gasket service on LS swaps
• Shop and garage drivetrain projects

Specs At A Glance

Good To Know

Q: Do I need this tool if the rear cover already looks straight? A: Yes, even a slightly off-center rear cover can cause a seal leak, and this kit holds it true to the crank centerline during tightening.

Q: Can this kit be used on more than one LS build? A: The tooling is reusable, so it works across multiple 4.8, 5.3, 5.7, and 6.0 liter projects with the same alignment procedure.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.