SKU: 19220603657
Ships within 48 hours · Estimated delivery Sep 5 - Sep 10
4 V8 1991 - 2000 GMC C3500HD 454/7
Checker Marathon (1978
Brand ACCEL Emission Code 2 GAP n/a Heat Range 1 Step Colder Hex Size 9/16" Length Standard Product Type Spark Plug Projected Tip No Qty 8 Reach
PullUp Style Lap Belt
Gasket Emission Code 5 Engine Chevrolet Small Block Gen II (LT Based) Packaging Retail - Skin Pack Product Type Valve Cover Gaskets Valve Cover Gasket Material Performance Valve Cover Gasket Thickness
Apr Valve Spring Kit (1 Set)-MS100258 emission-systems 4 V8 1991 - 2000The 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
