Proform Tall Valve Spring Height Micrometer; Range: 1.600" - 2.100" (For Most V8 Engines) R01J003S and Idle (including IAC parameters

and Idle (including IAC parameters and Idle Spark)

This product is sold only for use in connection with EPA-certified

This unit comes with dual 49-State federal approved cats and 3/8in

Isolated Ground

Proform Tall Valve Spring Height Micrometer; Range: 1.600" - 2.100" (For Most V8 Engines) R01J003S and Idle (including IAC parametersMeasure installed valve spring height conveniently and accurately. Simply install the height micrometer instead of a valve spring, and then rotate the clearly engraved dial to expand the tool to seat the valve, locks and retainer. PROFORM invites racers to experience the strength, innovation, and power behind the PROFORM brand. PROFORM Parts (Specialty Auto Parts U. S. A., Inc.) is a leader in the High Performance Automotive Aftermarket by engineering