Fits:

• 2017 thru 2024 Chevy Silverado/GMC Sierra 2500HD/3500HD L5P Duramax Diesel

• 2019-2023 Chevy Silverado 4500HD/5500HD/6500HD L5D Duramax Diesel

*Please call for availability*

WCFab’s Billet Exhaust Manifolds with EGR Riser Flange replaces the restrictive factory cast parts with high-strength, TIG-welded high-flow billet steel components designed to enhance exhaust flow characteristics, improving turbo spool up, lowering EGTs and increasing power and economy. These manifolds are exhaust port gasket matched and internally divided for optimal flow with OEM or ported cylinder heads. Includes new gaskets, ARP 12PT fasteners, up pipe bolt kit, and assembly lube for easy install. Finished in Black Ceramic Coat rated for 1800ºF. WCFab's Up Pipe Kit replaces the lightweight, leak prone, 1 5/8" OEM up pipes with heavy duty 11 gauge 2" Stainless up pipes. HD Stainless Bellows that will not crack and leak like OEM. Increase Turbo spool-up and decrease EGT's. NO Tuning required, bolt on! Will fit on stock truck no other modifications or upgrades necessary.

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
• This kit works correctly with EGR and all emissions controls present for the 2017-2024 L5P/L5D

Includes:

• Includes ARP Up Pipe Bolt Kit
  
• Passenger Side Up Pipe
  
• Driver Side Up Pipe
  
• Up Pipe Gaskets (4)

Notes:

• THE MANUFACTURE, SALE, OFFER FOR SALE, OR INSTALLATION OF THIS PRODUCT IS NOT LEGAL IN CALIFORNIA