Enginetech HB121 TTY Head Bolt Set for 1985-1993 Buick/Chevrolet/GMC 6000/Astro/Celebrity/Century 2.5L - Torque-to-Yield, Single Use
Enginetech HB121 TTY Head Bolt Set for 1985-1993 Buick/Chevrolet/GMC 6000/Astro/Celebrity/Century 2.5L - Torque-to-Yield, Single Use
Enginetech HB121 TTY Head Bolt Set for 1985-1993 Buick/Chevrolet/GMC 6000/Astro/Celebrity/Century 2.5L - Torque-to-Yield, Single Use
Enginetech HB121 TTY Head Bolt Set for 1985-1993 Buick/Chevrolet/GMC 6000/Astro/Celebrity/Century 2.5L - Torque-to-Yield, Single Use
Enginetech HB121 TTY Head Bolt Set for 1985-1993 Buick/Chevrolet/GMC 6000/Astro/Celebrity/Century 2.5L - Torque-to-Yield, Single Use
Enginetech HB121 TTY Head Bolt Set for 1985-1993 Buick/Chevrolet/GMC 6000/Astro/Celebrity/Century 2.5L - Torque-to-Yield, Single Use

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Enginetech HB121 TTY Head Bolt Set for 1985-1993 Buick/Chevrolet/GMC 6000/Astro/Celebrity/Century 2.5L - Torque-to-Yield, Single Use

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$32.44
SKU: BBPT_HB121
Condition: New
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Description  

The Enginetech HB121 is a replacement Torque-to-Yield (TTY) cylinder head bolt set for 1985-1993 Buick/Chevrolet/GMC 2.5L engines.

Important Notes

  • One set covers one cylinder head. Per-engine quantity: one set.

Specifications

Part NumberHB121
Product TypeTorque-to-Yield (TTY) Head Bolt Set
Bolt TypeSingle-use TTY - do not reuse
Cross-ReferencesClevite:821042, FEL-PRO:260-2504, FEL-PRO:ES72733, Victor Reinz:GS33190, SB International:220-1015

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 Chevrolet S10 Blazer 2.5L 151ci I4 OHV [VIN:E]
  • 1985-1988 GMC S15 Jimmy 2.5L 151ci I4 OHV [VIN:E]
  • 1985-1988 Pontiac Fiero 2.5L 151ci I4 OHV [VIN:R]
  • 1985-1990 Chevrolet Astro 2.5L 151ci I4 OHV [VIN:E]
  • 1985-1990 Chevrolet Celebrity 2.5L 151ci I4 OHV [VIN:R]
  • 1985-1990 GMC S15 2.5L 151ci I4 OHV [VIN:E]
  • 1985-1990 GMC Safari 2.5L 151ci I4 OHV [VIN:E]
  • 1985-1991 Chevrolet S10 2.5L 151ci I4 OHV [VIN:E]
  • 1985-1991 Pontiac 6000 2.5L 151ci I4 OHV [VIN:R]
  • 1985-1991 Pontiac Grand Am 2.5L 151ci I4 OHV [VIN:U]
  • 1985-1992 Buick Century 2.5L 151ci I4 OHV [VIN:R]
  • 1986-1987 Buick Somerset 2.5L 151ci I4 OHV [VIN:U]
  • 1986-1991 Buick Skylark 2.5L 151ci I4 OHV [VIN:U]
  • 1987-1991 Chevrolet LLV 2.5L 151ci I4 OHV [VIN:E]
  • 1990-1992 Chevrolet Lumina 2.5L 151ci I4 OHV [VIN:R]
  • 1991 GMC Sonoma 2.5L 151ci I4 OHV [VIN:E]
  • 1991-1993 Chevrolet LLV 2.5L 151ci I4 OHV [VIN:A]
  • 1991-1993 Chevrolet S10 2.5L 151ci I4 OHV [VIN:A]
  • 1991-1993 GMC Sonoma 2.5L 151ci I4 OHV [VIN:A]

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.

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