The Enginetech HB281 is a replacement Torque-to-Yield (TTY) cylinder head bolt set for 2000-2009 Audi/Volkswagen 4.2L engines.
Important Notes
- Two sets required per engine - one set per cylinder head.
Specifications
| Part Number | HB281 |
| Product Type | Torque-to-Yield (TTY) Head Bolt Set |
| Bolt Type | Single-use TTY - do not reuse |
| Cross-References | Victor Reinz:GS33551, MAHLE:GS33551 |
Vehicle Fitment
- 2000 Audi A6 Quattro 4.2L V8 DOHC [VIN:L]
- 2000-2003 Audi A8 Quattro 4.2L V8 DOHC [VIN:L]
- 2001-2003 Audi A8 Quattro 4.2L V8 DOHC [VIN:L]
- 2001-2003 Audi S8 4.2L V8 DOHC [VIN:U]
- 2001-2004 Audi A6 Quattro 4.2L V8 DOHC [VIN:L]
- 2004-2005 Audi A8 Quattro 4.2L V8 DOHC
- 2004-2006 Volkswagen Phaeton 4.2L V8 DOHC
- 2004-2006 Volkswagen Touareg 4.2L V8 DOHC
- 2004-2009 Audi S4 4.2L V8
- 2006 Audi A8 Quattro 4.2L V8 DOHC
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.
