HSP Diesel 2011-2016 LML Duramax Billet Valve Covers - 546-HSP

HSP Billet Valve Covers for 2011-2016 Chevrolet / GMC Duramax LML

Part Number: 546-HSP

The HSP Billet Valve Covers are a game-changer for the engine bay of the 2011-2016 LML Duramax-equipped Chevrolet and GMC trucks. Precision-machined and designed for performance and appearance, these billet covers upgrade both form and function.

Why Choose HSP Billet Valve Covers?

Factory valve covers are often overlooked when cleaning up the engine bay. Theyre basic and lack the durability and aesthetics most builds aim for. HSP Diesel recognized this and developed billet aluminum covers that bring strength, style, and sealing improvements.

What Makes HSP Billet Valve Covers Different?

These valve covers are CNC-machined from 6061 T6 aluminum, offering unmatched strength and a polished billet look. They feature integrated O-ring grooves to eliminate messy silicone and ensure a better seal. Powder coating options allow them to stand out or blend in with your custom engine bay aesthetic.

Optionally, HSP offers an add-on crankcase ventilation breather kit. This includes all the hardware to route breathers behind the front cab mounts and features 1/2" NPT to -10AN 90° fittings with -10AN nylon braided hoses. This kit is not included by default and must be selected separately at checkout.

Whats Included:

• 1x LML Billet Valve Cover Passenger Side (HSP-IN-1003)
• 1x LML Billet Valve Cover Driver Side (HSP-IN-1004)
• 4x M4-0.7 x 6mm Socket Cap Screw(RFB-093-RFAB)
• 2x Small HSP Logo (Flat)(RFB-752-F-RFAB)
• 36x M6x1.0x16mm Socket Cap Bolts (RFB-206-RFAB)

Fitment:

• LML: 2011-2016 (VIN Code 8)

How to check the VIN code: The 8th character of the VIN number identifies the engine code. The 10th character indicates the model year.

Our Warranty

HSP "NO BS" Limited Lifetime Warranty
At HSP, we believe in our products and back every single one with confidence. For years, weve supported our customers without hesitation. Now, weve formalized that commitment with our No BS Warranty — clear terms, strong coverage, and real support.

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