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Exhaust› Headers, Manifolds and Components

Stainless Works

Long Tube Header Assembly with Catted Y-Pipe

$2,896.00 $2,550.00 Save $346.00

SKU: CT0305

In Stock
In Stock
Ships by Aug 4
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30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

Constructed from 304 stainless steel, the system uses 1-3/4-inch mandrel-bent primary tubes flowing into 2-1/2-inch slip-fit collectors. The kit includes high-flow catalytic converters, a catted Y-pipe, high-temp RTV silicone, and an 8mm header bolt kit to facilitate installation. Compatibility is strictly limited to 2003-2006 4WD Chevrolet Silverado 1500 and GMC Sierra 1500 models equipped with 4.8L or 5.3L engines. Please note that these headers are not compatible with 2WD models. Installation of this assembly requires recalibration; professional tuning is mandatory to ensure the vehicle is optimized to run at its full potential. These headers do not have CARB certification and are not legal for use in California or other states that abide by California emission standards. They are intended for track and off-road use only.

MIA's Description

Built from 304 stainless steel with 1-3/4-inch primary tubes, this assembly includes high-flow catalytic converters and a catted Y-pipe.

These headers are TIG-welded for strength and durability and feature 3/8-inch thick flanges to ensure a secure fit for 2003-2006 4WD Chevrolet Silverado and GMC Sierra 1500 trucks with 4.8L or 5.3L engines.

Fitment

Fitment Guaranteed

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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

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Specifications

BrandStainless Works
Part NumberCT0305
CategoryExhaust

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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