The Enginetech HB127 is a replacement Torque-to-Yield (TTY) cylinder head bolt set for 1985-1991 Buick/Chevrolet/Pontiac 2.5L engines.
Important Notes
- One set covers one cylinder head. Per-engine quantity: one set.
Specifications
| Part Number | HB127 |
| Product Type | Torque-to-Yield (TTY) Head Bolt Set |
| Bolt Type | Single-use TTY - do not reuse |
| Cross-References | FEL-PRO:260-2518, FEL-PRO:ES72858, Victor Reinz:GS33266, SB International:220-1020, Detroit Diesel:67310 |
Vehicle Fitment
- 1985 Buick Skylark 2.5L 151ci I4 OHV [VIN:R]
- 1985 Buick Somerset Regal 2.5L 151ci I4 OHV [VIN:U]
- 1985 Chevrolet Citation II 2.5L 151ci I4 OHV [VIN:R]
- 1985-1986 Pontiac Firebird 2.5L 151ci I4 OHV [VIN:2]
- 1985-1988 Pontiac Fiero 2.5L 151ci I4 OHV [VIN:R]
- 1985-1990 Chevrolet Celebrity 2.5L 151ci I4 OHV [VIN:R]
- 1985-1991 Buick Century 2.5L 151ci I4 OHV [VIN:R]
- 1985-1991 Pontiac 6000 2.5L 151ci I4 OHV [VIN:R]
- 1985-1991 Pontiac Grand Am 2.5L 151ci I4 OHV [VIN:U]
- 1986-1987 Buick Somerset 2.5L 151ci I4 OHV [VIN:U]
- 1986-1991 Buick Skylark 2.5L 151ci I4 OHV [VIN:U]
- 1990-1991 Chevrolet Lumina 2.5L 151ci I4 OHV [VIN:R]
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.
