Prothane 7-520 LS1 Motor Mount Adapter Kit Tall Narrow Red Polyurethane

The Prothane 7-520 is a complete LS1 motor mount adapter kit designed for engine swap applications where the LS-series engine mounts do not align with the original frame mounting location. This Tall/Narrow configuration (as opposed to the Short/Wide 7-519) provides the correct geometry for a wide range of LS engine conversion builds.

The adapter plates are fully machined from 6061 T6 billet aluminum and are supplied with all necessary hardware for a complete installation. The included Prothane polyurethane motor mounts feature an internal interlock design that provides firm engine support while resisting oil, chemicals, and road contaminants that would deteriorate standard rubber mounts.

Kit Includes:

• 2 Tall/Narrow polyurethane motor mounts with internal interlock
• 2 billet aluminum 6061 T6 adapter plates
• Complete installation hardware
• Red polyurethane construction

Installation Note: When installing an LS engine using this conversion kit, relocation of the transmission mount forward may be required depending on the specific application.

Prothane motor mounts are engineered to limit unwanted engine movement, reduce drivetrain flex, and maximize power transfer to the wheels — making them an ideal upgrade for street performance and track use alike.