HSP Diesel 2004.5-2010 LLY/LBZ/LMM Duramax Billet Valve Covers - 046-HSP

HSP Billet Valve Covers for 2004.5–2010 Chevrolet / GMC Duramax Trucks

The 046-HSP or HSP Billet Valve Covers are designed for the 2004.5–2010 Chevrolet and GMC Duramax-equipped trucks. These valve covers are perfect for both performance and street-driven trucks. If you want to enhance your engine bay's appearance, these are exactly what you need.

Why Choose HSP Billet Valve Covers?

• Factory valve covers are plain and uninspiring.
• Duramax engines have a clean, open appearance”making them ideal for billet upgrades.
• HSP Diesel provides a visually striking, functional alternative to stock covers.

Features of the HSP Billet Valve Covers

• Material: CNC-machined from billet 6061 T6 aluminum for lasting strength and precision fit.
• Finish Options: Choose from factory or custom powder coat colors to match your build.
• Breather System Compatibility: Optional breather routing kit available for enhanced crankcase ventilation.

What's Included

• 1x LLY-LMM Billet Valve Cover Passenger Side (HSP-IN-1001)
• 1x LLY-LMM Billet Valve Cover Driver Side (HSP-IN-1002)
• 4x M4-0.7 x 6mm Socket Cap Screw (RFB-093-RFAB)
• 2x Small HSP Logo (RFB-752-F-RFAB)
• 28x M6 x 1.0 x 16mm Socket Cap Bolts (RFB-206-RFAB)

Vehicle Compatibility

• LLY: 2004.5–2005 (VIN Code 2)
• LBZ: 2006–2007 (VIN Code 2 or D)
• LMM: 2007.5–2010 (VIN Code 6)

Note: The engine code is represented by the 8th character of the VIN number. The 10th character designates the model year.

Special Notes and Recommendations

It is recommended to use these valve covers with HSP’s forward-facing thermostat housing. These covers do not include provisions for factory hardware mounts. Valve covers are no longer supplied with O-rings; use grey RTV to ensure a proper seal.

Product Overview

• 6061 T6 Billet Aluminum Construction
• CNC-Machined for Perfect Fitment
• O-Ring Seal 7/8-14 Port
• All-New Hardware Included
• Optional Crankcase Vent Kit
• Powder Coat Finishes Available
• Clean, Low-Profile Design

Our Warranty

HSP "No BS" Limited Lifetime Warranty

At HSP, we believe in our products and stand firmly behind every single one that leaves our facility. For years, we’ve gone above and beyond for our customers”even without an official policy. That commitment hasn’t changed. Now, it’s written in stone through our No BS Warranty.

For more information about our Lifetime, No BS Warranty, click HERE.