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Audi Volkswagen Engine Cylinder Head Bolt Set HBK4423

DNJ ENGINE COMPONENTS
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SKU HBK4423
$199.95 - $199.95
$199.95
$199.95 - $199.95
$199.95
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This DNJ Engine Components cylinder head bolt set HBK4423 is designed for Audi and Volkswagen models with 4.2L V8, 5.2L V10, and 4.2L V8 engines found in R8, S5, S6, S8, RS4, A8, A6, Q7, and Touareg. Precision-machined from high-strength steel, these bolts ensure secure head clamping and long-lasting engine integrity. An ideal replacement for worn or stretched OEM bolts during head gasket service.

Key Features & Benefits

  • OE-Certified Dimensions: Matches factory bolt length, thread, and hardness for direct bolt-in installation.
  • Premium Material: Constructed from heat-treated alloy steel for maximum tensile strength.
  • Corrosion Protection: Manganese phosphate coating resists rust and galling.
  • Complete Set: Contains all cylinder head bolts needed for one head replacement.
  • Reliable Seal: Helps prevent head gasket failure by maintaining uniform clamping force.

Vehicle Fitment

Make Model Years Engine
Audi R8 2010–2012 5.2V10
Audi R8 2014–2015 5.2V10
Audi R8 2008–2012 4.2V8
Audi S5 2008–2012 4.2V8
Audi A8 Quattro 2007–2012 4.2V8
Audi S6 2007–2011 5.2V10
Audi A6 Quattro 2007–2011 4.2V8
Audi Q7 2007–2010 4.2V8
Volkswagen Touareg 2007–2009 4.2V8
Audi S8 2007–2009 5.2V10
Audi RS4 2007–2008 4.2V8

Technical Specifications

Part Number HBK4423
Material Heat-Treated Alloy Steel
Coating Manganese Phosphate
Applications 4.2L V8 (Audi RS4, S5, A8, Q7, etc.), 5.2L V10 (R8, S6, S8)

Installation Notes

Professional installation recommended; use new bolts and follow factory torque-angle procedure for proper head sealing.

About DNJ Engine Components

DNJ Engine Components provides reliable engine parts with strict quality control, trusted by mechanics and enthusiasts worldwide.

This part also goes by the following cross reference.

Cross Reference Part Number:

Fits These Vehicles 12 applications
Type 42
Make Model Engine Years
Audi R8 5.2V10 2010–2012
Audi R8 5.2V10 2014–2015
Audi R8 4.2V8 2008–2012
Audi R8 4.2V8 2014–2015
B8
Make Model Engine Years
Audi S5 4.2V8 2008–2012
D3
Make Model Engine Years
Audi A8 Quattro 4.2V8 2007–2012
Audi S8 5.2V10 2007–2009
C6
Make Model Engine Years
Audi S6 5.2V10 2007–2011
Audi A6 Quattro 4.2V8 2007–2011
4L
Make Model Engine Years
Audi Q7 4.2V8 2007–2010
7L
Make Model Engine Years
Volkswagen Touareg 4.2V8 2007–2009
B7
Make Model Engine Years
Audi RS4 4.2V8 2007–2008