Kook

5.7L HEMI Header and Catted Connection Kit

$3,195.42

SKU: 3610H421

In Stock
In Stock
Ships by Jul 29
Free Shipping
30 Days Return

Description

The Kook 3610H421 is a high-performance header and catted connection kit engineered for the 5.7L HEMI engine. Constructed from T304 stainless steel, this kit features 1-7/8" x 3" long tube headers and 3" x OEM stainless catted connection pipes. This header and connection kit is specifically designed for direct fitment on 2011-2021 Jeep Grand Cherokee WK2 models and 2011-2026 Dodge Durango models equipped with the 5.7L HEMI engine. The use of T304 stainless steel ensures durability and resistance to corrosion, providing a long-lasting upgrade for your vehicle's exhaust system. Kook offers optional Jet-Hot Ceramic Coatings in various finishes like Classic Polish (Silver), Satin Silver, Satin Black, and Flat Black, to further enhance heat resistance and aesthetics. Additionally, a tumbling service is available for a smooth, uniform finish. These options can be selected at the time of purchase, though Kooks advises that the effectiveness of tumbling on headers with deep oil stains cannot be guaranteed. The product is built to order in North Carolina with an estimated ship window of 4-6 weeks.

Fitment

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Specifications

BrandKook
Part Number3610H421
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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