Akerly & Childs 4.165" Xtreme Piston Ring Compressor TK12414 These brackets bolt to the

These brackets bolt to the head and top water pump bolt holes

Easily remove these hold down nuts with a 1/4" extension

1975-1981 Pontiac Bonneville

8-1/2 in Tall x 3-1/2 in OD

Akerly & Childs 4.165" Xtreme Piston Ring Compressor TK12414 These brackets bolt to thePiston installation is as important a procedure as any other during engine assembly. That is why Akerly & Childs Xtreme ring compressors are manufactured with the engine builder in mind. All compressors are machined with a step at the bottom to clear block o rings when used. Xtreme compressors are manufactured from aircraft quality 6061T6 heat treated aluminum and then hard anodized for long life. Akerly & Childs over 50 years experience in racing