Do I need to replace my head bolts when removing the cylinder head?

Yes, it is highly recommended to replace cylinder head bolts whenever the cylinder head is removed. These bolts are typically torque-to-yield fasteners, meaning they are designed to stretch to a specific point during installation and are intended for single use to ensure a proper seal.

What is the torque specification for these bolts?

Torque specifications and sequences vary by vehicle model and engine. Always consult your vehicle's specific service manual for the correct torque values and tightening procedure to ensure proper installation.

What material are these cylinder head bolts made from?

These MAHLE Original cylinder head bolts are made from a strong, durable material designed to withstand the high clamping forces and temperatures found in an engine's cylinder head assembly.

MAHLE Original Cylinder Head Bolts GS33581

Name: MAHLE Original BMW 545I 05-04 Cylinder Head Bolts
Brand: Victor Reinz
Price: 45.31 USD
Availability: InStock

MAHLE Original BMW 545I 05-04 Cylinder Head Bolts

$45.31

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 BMW 545i, 550i, 645Ci, 650i, 745i, 750i, X5. Ensures a solid seal for your engine.

Key Features

Fits a range of BMW vehicles including 545i, 550i, 645Ci, 650i, 745i, 750i, and X5.
Ensures proper clamping force for a reliable cylinder head seal.
Manufactured to meet original equipment specifications.
Made from strong materials for durability.
Designed for precise fitment and torque-to-yield performance.

Secure CheckoutFast Shipping631-982-0042

Will this fit your vehicle?

Product Details

If you're rebuilding the top end of your BMW, getting the cylinder head sealed down properly is critical. These MAHLE Original cylinder head bolts are designed to ensure a strong, even clamping force across the cylinder head, which is essential for preventing leaks and maintaining proper engine compression. They are built to meet the original equipment specifications for a range of BMW models, including the 545i, 645Ci, and 745i.

When you're working on an engine, using the right fasteners makes a big difference. These bolts are made from a strong material and are manufactured to precise tolerances, just like the ones that came from the factory. This means they'll thread in smoothly and provide the correct stretch and clamping force when torqued down, helping to create a reliable seal between the cylinder head and the engine block. This is especially important for high-performance engines where maintaining compression and preventing coolant or oil leaks is paramount.

It's always a good idea to replace your head bolts whenever you're removing the cylinder head, as they are torque-to-yield fasteners and are designed for a single installation. Using new bolts ensures you get the correct clamping force for a long-lasting seal. Always refer to your vehicle's service manual for the proper torque sequence and specifications.