JE Pistons Premium Race Series Piston Rings - 4.560" Bore File Fit 1/16 x 1/16 x 3/16" Thick - Low Tension RU0020032XL and 112-589 This Idle Air

and 112-589 This Idle Air Control (IAC) Motor is a direct replacement for a GM OE Part #17113598

MD3 Monte Carlo has smaller shelf to keep from collecting dirt

Fits through factory bumper cut-outs

Designed for exhaust valves on Chevrolet Big Chevrolet engines with aluminum heads

JE Pistons Premium Race Series Piston Rings - 4.560" Bore File Fit 1/16 x 1/16 x 3/16" Thick - Low Tension RU0020032XL and 112-589 This Idle AirProduct Description: Piston Rings Premium Race Series 4. 560 in Bore File Fit 1 16 x 1 16 x 3 16 in Thick Low Tension Ductile Iron Plasma Moly 8 Cylinder JE Pistons is the leader in high performance forged pistons. JE Pistons has built a reputation that the competition can only follow. JE Pistons has a history of manufacturing the highest quality pistons and components that professional engine builders, race teams, and high performance enthusiasts