The Enginetech HB159 is a replacement Torque-to-Yield (TTY) cylinder head bolt set for 1965-2000 Chevrolet/GMC/Pontiac 6.5L/7.0L/6.6L engines.

Important Notes

• Two sets required per engine - one set per cylinder head.

Specifications

Vehicle Fitment

• 1965 Chevrolet Corvette 6.5L 396ci V8 OHV
• 1965-1967 Chevrolet Impala 6.5L 396ci V8
• 1965-1969 Chevrolet Bel Air 6.5L 396ci V8 OHV
• 1965-1969 Chevrolet Biscayne 6.5L 396ci V8 OHV
• 1965-1969 Chevrolet Impala 6.5L 396ci V8 OHV
• 1966-1969 Chevrolet Bel Air 7.0L 427ci V8 OHV
• 1966-1969 Chevrolet Biscayne 7.0L 427ci V8 OHV
• 1966-1969 Chevrolet Caprice 6.5L 396ci V8 OHV
• 1966-1969 Chevrolet Caprice 7.0L 427ci V8 OHV
• 1966-1969 Chevrolet Corvette 7.0L 427ci V8 OHV
• 1966-1969 Chevrolet Impala 7.0L 427ci V8 OHV
• 1967-1969 Chevrolet Camaro 6.5L 396ci V8 OHV
• 1968 Chevrolet Camaro 6.5L 396ci V8
• 1968 Chevrolet Chevy II 6.5L 396ci V8
• 1968 Chevrolet Chevy II 6.5L 396ci V8 OHV
• 1968-1969 Chevrolet C10 Pickup 6.5L 396ci V8 OHV [VIN:E]
• 1968-1969 Chevrolet C10 Pickup 6.5L 396ci V8 OHV [VIN:Y]
• 1968-1969 Chevrolet C10 Suburban 6.5L 396ci V8 OHV [VIN:E]
• 1968-1969 Chevrolet C10 Suburban 6.5L 396ci V8 OHV [VIN:Y]
• 1968-1969 Chevrolet C20 Pickup 6.5L 396ci V8 OHV [VIN:E]
• 1968-1969 Chevrolet C20 Pickup 6.5L 396ci V8 OHV [VIN:Y]
• 1968-1969 Chevrolet C20 Suburban 6.5L 396ci V8 OHV [VIN:E]
• 1968-1969 Chevrolet C20 Suburban 6.5L 396ci V8 OHV [VIN:Y]
• 1968-1969 Chevrolet C30 Pickup 6.5L 396ci V8 OHV [VIN:E]
• 1968-1969 Chevrolet C30 Pickup 6.5L 396ci V8 OHV [VIN:Y]
• 1968-1969 Chevrolet El Camino 6.5L 396ci V8 OHV
• 1968-1969 Chevrolet K10 Pickup 6.5L 396ci V8 OHV [VIN:E]
• 1968-1969 Chevrolet K10 Pickup 6.5L 396ci V8 OHV [VIN:Y]
• 1968-1969 Chevrolet K10 Suburban 6.5L 396ci V8 OHV [VIN:E]
• 1968-1969 Chevrolet K10 Suburban 6.5L 396ci V8 OHV [VIN:Y]
• 1968-1969 Chevrolet K20 Pickup 6.5L 396ci V8 OHV [VIN:E]
• 1968-1969 Chevrolet K20 Pickup 6.5L 396ci V8 OHV [VIN:Y]
• 1968-1969 Chevrolet K20 Suburban 6.5L 396ci V8 OHV [VIN:E]
• 1968-1969 Chevrolet K20 Suburban 6.5L 396ci V8 OHV [VIN:Y]
• 1968-1969 Chevrolet K30 Pickup 6.5L 396ci V8 OHV [VIN:E]
• 1968-1969 Chevrolet K30 Pickup 6.5L 396ci V8 OHV [VIN:Y]
• 1968-1969 GMC C15/C1500 Pickup 6.5L 396ci V8 OHV [VIN:E]
• 1968-1969 GMC C15/C1500 Pickup 6.5L 396ci V8 OHV [VIN:Y]
• 1968-1969 GMC C15/C1500 Suburban 6.5L 396ci V8 OHV [VIN:E]
• 1968-1969 GMC C15/C1500 Suburban 6.5L 396ci V8 OHV [VIN:Y]
• 1968-1969 GMC C25/C2500 Pickup 6.5L 396ci V8 OHV [VIN:E]
• 1968-1969 GMC C25/C2500 Pickup 6.5L 396ci V8 OHV [VIN:Y]
• 1968-1969 GMC C25/C2500 Suburban 6.5L 396ci V8 OHV [VIN:E]
• 1968-1969 GMC C25/C2500 Suburban 6.5L 396ci V8 OHV [VIN:Y]
• 1968-1969 GMC C35/C3500 Pickup 6.5L 396ci V8 OHV [VIN:E]
• 1968-1969 GMC C35/C3500 Pickup 6.5L 396ci V8 OHV [VIN:Y]
• 1968-1969 GMC K15/K1500 Pickup 6.5L 396ci V8 OHV [VIN:E]
• 1968-1969 GMC K15/K1500 Pickup 6.5L 396ci V8 OHV [VIN:Y]
• 1968-1969 GMC K15/K1500 Suburban 6.5L 396ci V8 OHV [VIN:E]
• 1968-1969 GMC K15/K1500 Suburban 6.5L 396ci V8 OHV [VIN:Y]
• 1968-1969 GMC K25/K2500 Pickup 6.5L 396ci V8 OHV [VIN:E]
• 1968-1969 GMC K25/K2500 Pickup 6.5L 396ci V8 OHV [VIN:Y]
• 1968-1969 GMC K25/K2500 Suburban 6.5L 396ci V8 OHV [VIN:E]
• 1968-1969 GMC K25/K2500 Suburban 6.5L 396ci V8 OHV [VIN:Y]
• 1968-1969 GMC K35/K3500 Pickup 6.5L 396ci V8 OHV [VIN:E]
• 1968-1969 GMC K35/K3500 Pickup 6.5L 396ci V8 OHV [VIN:Y]
• 1968-1969 Pontiac Acadian 6.5L 396ci V8 OHV
• 1969 Chevrolet Brookwood 6.5L 396ci V8 OHV
• 1969 Chevrolet Brookwood 7.0L 427ci V8 OHV
• 1969 Chevrolet Camaro 7.0L 427ci V8 OHV
• ...and 257 additional applications

Enginetech TTY (Torque-to-Yield) head bolt sets are engineered to OEM specifications for proper cylinder head clamping force during engine rebuilds. TTY bolts are designed for single use - they stretch plastically during torquing to achieve precise clamp load and must never be reused. Enginetech packages head bolts in per-head quantities for popular applications, making it straightforward to order exactly what your engine requires. Always follow the manufacturer's torque sequence and torque angle specification when installing TTY head bolts. Verify part fitment by year, make, model, and engine displacement before ordering.

WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.