Description
Description
Fits
| Year | Make | Model |
| 2017-2025 | GMC/ Chevrolet HD | 6.6L Duramax |
| 2019+ | GMC/ Chevrolet MD | L5D Duramax (4500/5500/6500) |
This Wherli exhaust manifold kit with up-pipes are the perfect replacement for your restrictive OEM cast components. Featuring TIG-welded high-flow billet steel, engineered to increase turbo spool, exhaust flow, lower EGTs, and improve overall engine performance.
Part Number: WCF100226
Features
- Fully TIG Welded, CNC machined billet steel exhaust manifolds
- Finished in Black Ceramic Coat rated for 1800ºF
- Includes new gaskets for manifold to cylinder head, EGR flange, and manifold to up pipe
- Includes ARP 12PT Fasteners and washers for installation to cylinder head
- 1/8 NPT port (and optional plug) included in driver side manifold for installation of EGT or drive pressure sensor
- Includes ARP Up Pipe Bolt Kit
- Passenger Side Up Pipe
- Driver Side Up Pipe
- Up Pipe Gaskets (4)
- No tuning required
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