Eliminate cracks and restore performance. The factory cast iron manifolds on the 4.3L V6 are notorious for cracking, leaking, and restricting flow. Upgrade your 1996-2001 Chevy S10/Blazer or GMC Sonoma/Jimmy to our High-Performance T-304 Stainless Steel Header Manifold. Engineered for 4WD models with Air Injection, this 2-piece kit is the durable, high-flow solution your truck needs.
Why Upgrade to T-304 Stainless Steel?
Stock manifolds degrade over time due to heat cycles and rust. Our headers are manufactured from CNC machined T-304 stainless steel, offering superior resistance to corrosion and thermal stress.
Enhanced Durability: Computerized TIG welded flanges provide exceptional strength, ensuring a leak-free seal that outlasts OEM cast iron parts.
Optimized Flow: The 3-to-1 piping design reduces back pressure compared to stock, allowing your 4.3L Vortec engine to breathe better for improved throttle response.
Direct Fit Replacement: Designed with pre-welded hangers and OEM-spec geometry for a straightforward bolt-on installation—no cutting or heavy modification required.
OEM Quality: Produced by OEM-approved manufacturers using materials that meet or exceed original equipment standards.
Technical Specifications
Engine Fitment
4.3L V6 OHV Engine Only
Drivetrain Fitment
4WD Models Only
Emission Feature
Fits Models with Air Injection Only
Material
T-304 Stainless Steel
Tube Diameter
Inlet: 1.5" (38.1mm) / Outlet: 2.0" (50.8mm)
Vehicle Compatibility Guide
Please verify your vehicle matches ALL criteria (Year, Model, Engine, Drive, Air Injection) before purchasing.
Chevrolet Blazer: 1997-2001
Chevrolet S10: 1996-2001
GMC Jimmy: 1997-2001
GMC Sonoma: 1996-2001
Installation Note: No installation guides are included with this kit. We highly recommend seeking professional installation to ensure proper fitment and gasket sealing.
Engine Safety Rating
Difficulty
Fitment
Make
GMC
Engine Size
4.3L
Year
1996
1997
1998
1999
2000
2001
Installation
100% Plug and Play
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Stainless Steal Header Manifold For GMC Sonoma (1996-2001) with 4.3L V6 Engine