The Enginetech HB312 is a replacement Torque-to-Yield (TTY) cylinder head bolt set for 2014-2019 Chevrolet/GMC 4.3L engines.
Important Notes
- Two sets required per engine - one set per cylinder head.
Specifications
| Part Number | HB312 |
| Product Type | Torque-to-Yield (TTY) Head Bolt Set |
| Bolt Type | Single-use TTY - do not reuse |
Vehicle Fitment
- 2014-2019 Chevrolet Silverado 1500 4.3L 262ci V6 OHV [VIN:H]
- 2014-2019 GMC Sierra 1500 4.3L 262ci V6 OHV [VIN:H]
- 2018-2019 Chevrolet Express 2500 4.3L 262ci V6 OHV [VIN:P]
- 2018-2019 Chevrolet Express 3500 4.3L 262ci V6 OHV [VIN:P]
- 2018-2019 GMC Savana 2500 4.3L 262ci V6 OHV [VIN:P]
- 2018-2019 GMC Savana 3500 4.3L 262ci V6 OHV [VIN:P]
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.
