Long Tube Header Kit 1999-2006 Chevy GMC GMT800 Silverado Avalanche Sierra 1500 T304 3in

PSSHDR1148 — Long Tube Header Kit 1999-2006 Chevy GMC GMT800 Silverado Avalanche Sierra 1500 T304 3in

Upgrade your build with Phil’s Swap Shop headers, engineered for strong performance, precise fitment, and a clean, polished under-hood appearance. Crafted from polished 304 stainless steel, these headers are built to improve exhaust flow, provide long-lasting durability, and give your engine bay a premium look. Ideal for builders and DIY mechanics alike, they deliver the performance, sound, and quality you want at a price that makes sense.

Features

• Header Inlet/Outlet Size (IN): 1.83" / 2.84"

• Made of T-304 stainless steel

• 2 × 4-1 manifolds connecting into a 3" Y-pipe

• TIG welded CNC machined flange

• Increase high flow air, instantly gain 10 to 15 HP / TQ

• Professional installation is highly recommended

• No instruction included

Fitment

• 1999-2006 Chevy / GMC GMT800 Silverado, Sierra, and Avalanche 1500 (2WD & 4WD)

• 4.8L, 5.3L, 6.0L

Package

• 2 × Exhaust Header

• 1 × Y-Pipe

• 2 × Pipe

• 2 × Gaskets

• 4 × Flange Clamp

• 1 × Accessories

• 1 Pack Screws & Nuts

Sold in Canada by a Canadian brand, using Canadian and imported components.