Why should I replace my cylinder head bolts when doing a head gasket job?

Cylinder head bolts on many diesel engines, including the Duramax 6.6L, are torque-to-yield. This means they are designed to stretch to a specific point to achieve the correct clamping force. Once stretched, they should not be reused, as their integrity is compromised.

What is the difference between cylinder head bolts and head studs?

Both bolts and studs secure the cylinder head to the engine block. Head studs typically offer a stronger clamping force and can make installation easier as the head can be slid into place over the studs. Bolts thread directly into the block. This product is a set of replacement bolts.

Does this set include all the bolts needed for both cylinder heads?

This MAHLE Original GS33839 set contains the necessary cylinder head bolts for one bank of cylinders. For a complete engine rebuild requiring both cylinder heads to be reinstalled, you will need to purchase two sets.

MAHLE Original Cylinder Head Bolts 11-16 GM Duramax 6.6L GS3

Name: MAHLE Original 11-16 GM Duramax 6.6L Cylinder Head Bolts
Brand: Victor Reinz
SKU: victor-reinz-mahle-original-11-16-gm-duramax-6-6l-cylinder-head-bolts-t14-348482
Price: 135.67 USD
Availability: BackOrder

MAHLE Original 11-16 GM Duramax 6.6L Cylinder Head Bolts

$135.67

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

MAHLE Original cylinder head bolts for 2001-2011 GM Duramax 6.6L engines. Essential for sealing the combustion chamber during engine rebuilds.

Key Features

Fits 2001-2011 GM Duramax 6.6L engines.
Essential for proper cylinder head sealing during engine rebuilds.
Well-built materials designed to withstand diesel engine stresses.
Meets original equipment specifications for fit and function.
New bolts are required for torque-to-yield applications.

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Will it fit your car?

Product Details

If you're rebuilding the top end of your GM Duramax 6.6L engine, you need to make sure the cylinder heads are sealed properly. These MAHLE Original cylinder head bolts are designed to do just that, ensuring a strong connection between the block and the heads. They are a crucial part of keeping combustion pressure contained and preventing coolant or oil leaks.

These bolts are made from well-built materials to handle the stresses of diesel engine operation. They are designed to meet the original equipment specifications for fit and function, making installation straightforward when you're putting your engine back together. Using new head bolts is standard practice during a head gasket job because they are torque-to-yield, meaning they stretch to achieve the correct clamping force and shouldn't be reused.

This set fits a wide range of GM trucks and SUVs, including popular models like the Chevrolet Silverado 2500 HD and GMC Sierra 2500 HD from the early 2000s through 2011. Always refer to your vehicle's service manual for the correct torque specifications and tightening sequence when installing these bolts.