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Wehrli Custom Fab WEHRLI CUSTOM FAB WCF100373 BILLET EXHAUST MANIFOLDS 17 -24 L5P

Fits 2017-2024 6.6L Duramax V8 (L5P) · 6.6L Duramax V8 (L5P, updated)

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gain
no published figure
price
$1,526.78
at Kingz Diesel Supply
install
4/5 difficulty · ~4-8 hrs, shop job for most people
Buy at Kingz Diesel Supply→

Headers replace the cast exhaust manifolds with tuned tubes so each cylinder has a smoother path out. This one is the Wehrli Custom Fab WEHRLI CUSTOM FAB WCF100373 BILLET EXHAUST MANIFOLDS 17 -24 L5P, listed to fit the 2017-2024 GMC Sierra 2500HD/3500HD with the 6.6L Duramax V8 (L5P) or 6.6L Duramax V8 (L5P, updated).

why this one — This is a long, hot, awkward job on a truck. Budget for a shop and for a tune afterward. Kingz Diesel Supply lists it at $1526.78, and the fitment above is what the listing itself states, not a guess.

pairs well with
Banks Power Monster Exhaust System, 5in DPF-Back, Chrome Tip
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