Yella Terra Valve Cover Spacer Seal - GM LS Series 57125BK All 168-tooth flywheels have GM

All 168-tooth flywheels have GM dual bolt patterns

Aluminum Polishing Kit

The MSD Module Selectors allow you to choose two or three different rpm limits that can be activated at different times

Sold Individually - Does Not Include Blades

16 to 27 in Long

Yella Terra Valve Cover Spacer Seal - GM LS Series 57125BK All 168-tooth flywheels have GMProduct Description: Valve Cover Spacer Seal Rubber GM LS Series Yella Terra has been designing, developing and manufacturing High Performance products in Australia for over 50 years! Over 60 Years of Performance Innovation! From humble beginnings in the early 1960s Dyno Dave Bennett and his staff have built Yella Terra into Australias leading manufacturer of Roller Rockers, Performance Cylinder Heads, Superchargers and Billet Flywheels & Flexplates.