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Exhaust Exhaust Pipes, Systems and Components

Kooks Headers

Kooks 99-06 GM 1500 Series 3in x OEM Out GREEN Cat SS Y Pipe Kooks HDR Req

$2,564.09 $2,307.68 Save $256.41

SKU: K009 28513300

In Stock
In Stock
Ships by Jun 18
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The Kooks 3-Inch Green Catted Y-Pipe improves performance with cleaner emissions and a high-flow design to prevent check engine lights. Made from 16-gauge 304 stainless steel, it withstands exhaust temperatures up to 1500°F. It has a 3-inch inlet inside diameter and connects to the OEM exhaust outlet. EPA compliant but not CARB certified (not legal for sale/use in California). Rated for forced induction applications up to 750 RHWP.

Fitment

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Specifications

BrandKooks Headers
Part NumberK009 28513300

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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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