• 1967-1972 Chevy/GMC 1/2-Ton, 3/4-Ton, 1-Ton 1500, 2500, 3500 Trucks
• 1967-1972 Blazer, Jimmy, Suburban, Tahoe, Yukon

Notes:

• Fits D-Port cylinder heads, including ZZ4 crate engines
• Will fit most angle plug heads, including factory Chevrolet Bow Tie Heads

Emission Code:

• The product accompanying this document is legal only for off-highway use (except in California or states that have adopted California emission standards), racing use or for use on pre-emission-controlled motor vehicles/motor vehicleengines (pre-1974 domestic vehicles certified to California standards, pre-1974 domestic vehicles certified to federal standards and all pre-1974 foreign vehicles), per the manufacturer's application guide.