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Kooks Headers 1-7/8in Header & Catted Connection Kit

Fits 2019-2026 5.3L V8

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gain
no published figure
price
$3,776.22
at AmericanTrucks
install
5/5 difficulty · 8+ hrs / shop recommended
Buy at AmericanTrucks

Headers replace the cast-iron exhaust manifolds with tubular pipes. This is Kooks' full long-tube kit: 1-7/8 inch T304 stainless primaries plus a 3-inch OEM-style catted Y-pipe, so the catalytic converters stay in the system.

why this one — At $3,776 this is the most expensive part in this group and Kooks publishes no power figure for it, so it is a buy-the-brand decision. Budget for a shop, 8-plus hours and a tune on top of the part price. Retailers also disagree on the end year, AmericanTrucks saying through 2026 and Beefcake saying 2024 while Kooks lists only "2019+", so confirm your model year first.

heads up

Not CARB-legal per Beefcake Racing's checkout note; no CARB EO number found on any page checked.

Gain shown is a no published number, not a guarantee. Price is a list price and can lag the retailer; confirm at checkout. See our affiliate disclosure.