Exhaust Tips Black for GMC Sierra 2500 HD 3500 HD (2007-2010) 6.6L Diesel 4 Inch Inlet

T304 Stainless Dual-Outlet Exhaust Tip for 2007-2010 GMC Sierra (GMT900)

What it Does: The dual-outlet exhaust tip adapts the factory or aftermarket 4.00-inch tailpipe on the 2007-2010 Sierra HD to staggered dual 6.00-inch slant exits to direct high-temperature diesel particulate filter (DPF) exhaust gas away from the chassis while upgrading rear aesthetic.

The Stock GMC Sierra Exhaust Tailpipe Vulnerability

Factory exhaust routing on the heavy-duty GMT900 platform terminates in an unfinished, bare-metal 4-inch single pipe prone to surface oxidation, road-salt corrosion, and exhaust soot buildup. During active DPF regeneration cycles on the 6.6L Duramax LMM, exhaust gas temperatures (EGTs) elevate significantly at the tailpipe exit. Standard single-wall designs readily conduct this thermal load directly across the quarter panel and lack sufficient dispersion geometry, while unfinished steel quickly degrades under continuous heat cycling.

The Engineering Solution

Fabricated from heavy-gauge, corrosion-resistant T304 stainless steel, this single weldment converts a single 4.00-inch inlet into dual staggered 6.00-inch slant-cut outlets. The double-wall architecture minimizes radiant heat transfer to prevent discoloration of the high-temp gloss black coating. Fully TIG welded for structural rigidity, the 17.00-inch overall length and 13.50-inch lateral profile project past the bedside to prevent soot impingement on body panels without disrupting post-DPF exhaust velocity.

What's Included

• 1 Dual-Outlet Exhaust Tip Assembly (4" inlet, dual 6" staggered slant outlets)

Technical Specifications

Compatibility

• 2007-2010 GMC Sierra 2500 HD 6.6L Duramax Diesel (LMM) with 4" post-DPF tailpipe
• 2007-2010 GMC Sierra 3500 HD 6.6L Duramax Diesel (LMM) with 4" post-DPF tailpipe
• 2001-2007 GMC Sierra 2500 HD / 3500 HD equipped with 4" aftermarket exhaust
• 2011-2019 GMC Sierra 2500 HD / 3500 HD (LML / L5P) equipped with 4" tailpipe

Frequently Asked Questions & Fitment Warnings

Does this fit the GMT900 Sierra?

Yes, this is a direct fit for the 2007-2010 GMC Sierra equipped with the 6.6L Duramax LMM engine with a 4.00-inch tailpipe. Does not fit 5.00-inch aftermarket diesel exhausts, stock 3.00-inch or 3.50-inch tailpipes, or 3.0L Duramax 1500 trucks.

How is this exhaust tip secured to the vehicle?

This tip requires either an exhaust band clamp or professional perimeter weld depending on your clearance requirements and tailpipe cut location.

The GMC Heavy-Duty Caliber

Constructed to endure severe commercial towing cycles, heavy payload hauling, and high thermal stress, this T304 stainless assembly maintains structural integrity against road debris and heavy soot without cracking or warping.