Holley designed these throttle bodies with all relevant emission provisions and hook-ups for a true 50-State legal installation. They are engineered for a “bolt-on” installation on stock factory manifolds for the applications cataloged. The one barrel throttle bodies have been assigned California Air Resources Board (C.A.R.B.) Executive Order (E.O.) number D-115-4. The two barrel throttle replacement bodies are considered to be the functional equivalent of the original equipment throttle body and, as such, are considered to be 50-State legal. Therefore, the C.A.R.B. E.O. number is not required.

• Direct Replacement For OE Units
• 2 in. Throttle Bore
• 42% Area Increase Over Stock TBI
• Including Air Distribution Ring
• Increased Torque and Horsepower up to 25%
• 50 State Legal

Application:

• 1986-1989 CHEVROLET ASTRO V6 4.3
• 1988-1989 CHEVROLET C1500 V6 4.3
• 1988-1989 CHEVROLET C2500 V6 4.3
• 1988-1989 CHEVROLET K1500 V6 4.3
• 1988-1989 CHEVROLET K2500 V6 4.3
• 1987-1987 CHEVROLET R10 V6 4.3
• 1987-1988 CHEVROLET R20 V6 4.3
• 1987-1987 CHEVROLET V10 V6 4.3
• 1988-1989 GMC C1500 V6 4.3
• 1988-1989 GMC C2500 V6 4.3
• 1988-1989 GMC K1500 V6 4.3
• 1988-1989 GMC K2500 V6 4.3