Apr Valve Spring Kit (1 Set)-MS100258 emission-systems A handy parts guide is

A handy parts guide is affixed to the inside case cover to assist in reordering components when necessary

Year Make Model Submodel Engine Size 2001 - 2005 Chevrolet Silverado 2500 HD 4

durable and corrosion resistant stainless steel and is produced using CNC precision robotic manufacturing

9L/L6 1987 - 1989 Chevrolet G10 5

Apr Valve Spring Kit (1 Set)-MS100258 emission-systems A handy parts guide isThe APR Valve Spring System is a high performance, lightweight upgrade designed to increase valve control and eradicate valve float common on many applications. APR's design specifications called for a valve spring, retainer and spring seat combination that doesn't overpower and snap the OEM valves or erode the aluminum spring seat, while still maintaining exceptional valve control. The result is an advanced design that's 28% lighter yet 20% stiffer