JBA Cat4Ward 1-3/4 in Silver Ceramic Shorty Headers for Select 2001-2003 GM Truck/SUV (8.1L) - 1860SJS

Fits select 2001-2003 Chevrolet Silverado 2500 HD/3500, Suburban 2500, Avalanche 2500 and GMC Sierra 2500 HD/3500, Yukon XL 2500 (8.1L).

JBA Cat4Ward shorty headers are a precision-engineered performance upgrade designed to replace restrictive factory exhaust manifolds on the GM 8.1L Big Block engine. This 1860SJS set is built for heavy-duty applications, delivering increased horsepower and torque that is especially noticeable when towing or hauling. The silver ceramic coating provides an added layer of thermal protection, significantly reducing under-hood temperatures and preventing corrosion.

Each header is manufactured from mandrel-bent stainless steel tubing with 1-3/4 in primaries to ensure consistent flow. The design features JBA's proprietary Firecone collector for improved exhaust scavenging and 3/8 in thick machined flanges to prevent warping and ensure a professional, leak-free seal against the cylinder head. These headers are specifically configured for vehicles without EGR or A.I.R. systems.

• 1-3/4 in mandrel-bent stainless steel primary tubes
• Silver ceramic finish for heat management and durability
• Proprietary JBA Firecone collector technology
• 3/8 in thick machined flanges with oversized exhaust ports
• Extra thick collector domes to prevent leaks
• Configuration: Without EGR or A.I.R. provisions
• Direct bolt-on installation with included high-quality hardware
• Manufacturer Part Number: 1860SJS