Engine Valve Spring Checker 1989-pontiac-firebird-esi6878223 includes a built-in H-pipe design

includes a built-in H-pipe design and delivers improved throttle response

Brackets designed to fit factory rear ends

Each valve features a one-piece forged titanium construction with superior grain flow to eliminate weak points and ensure long-term strength

Some vehicles have a 3-link rear suspension while others have a 4-link set-up

Does not include coil-overs or control arms

Engine Valve Spring Checker 1989-pontiac-firebird-esi6878223 includes a built-in H-pipe designHere's the affordable, portable way to test springs. The hex design body is very versatile: use it in a vise or an arbor press. These hydraulic models are supplied with a rubber gauge protector.