HSP Diesel Billet Exhaust Manifolds; Ceramic Coated (01-16 6.6L Duramax Sierra 2500 HD)Find parts that fit my vehicle

Fitment: Fits 2001-2016 Chevrolet Silverado and GMC Sierra 2500HD / 3500HD with the 6.6L Duramax (LB7, LLY, LBZ, LMM, LML).

HSP Diesel Coated Billet Manifolds

Why Would You Need the HSP Diesel Coated Billet Manifolds?

The factory manifolds are restrictive from the get-go. HSP Diesel noticed quickly that these needed to be addressed if you wanted to make more power. The factory manifolds are also known to fail due to cracks, warping, and broken bolts. The HSP Diesel Manifolds address all of these issues while looking better and adding power.

What Do the HSP Diesel Coated Billet Manifolds Do Differently?

The HSP Diesel Coated Billet Manifolds are machined from 1018 steel. This allows for maximum flow due to a more open port design, which eliminates the common flow restriction found in the driver's side manifold. The low-profile design also offers additional clearance for custom routing. These manifolds are compatible with factory-style up-pipes and come ceramic coated for superior heat protection—rated up to 2,000°F.

What Comes with the HSP Diesel Coated Billet Manifolds?

• 1x LB7-LML Billet Manifold - Driver (HSP-IN-660-D)
• 1x LB7-LML Billet Manifold - Passenger (HSP-IN-660-P)
• 2x 1/8 NPT Brass Plug (RFB-811-RFAB)
• 1x Manifold Gasket Set (RFB-820-RFAB)
• 12x M10x1.5x25mm Socket Head Cap (RFB-833-RFAB)
• 16x M10x1.5x35mm Bolts (RFB-834-RFAB)

Vehicle Fitment

• LB7: 01“04 (VIN Code 1)
• LLY: 04.5“05 (VIN Code 2)
• LBZ: 06“07 (VIN Code 2 or D)
• LMM: 07.5“10 (VIN Code 6)
• LML: VIN Code 8

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

Overview

• 1018 Steel Construction
• CNC Machined for Precision
• High-Flow, Low-Profile Design
• Works with Factory Up-Pipes
• Includes New Gaskets and Grade 8 Hardware
• Ceramic Coating Rated up to 2,000°F
• Eliminates Flow Restriction in Driver Side Factory Manifold

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 to support our customers—even before we had an official warranty in place. That same level of commitment continues today with our No BS— warranty.

For more information, click HERE .

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov