Unlock the full potential of your 2000–03 Chevy/GMC 3/4 Ton and 1 Ton Trucks with the 8.1L Vortec V8 with premium long tube headers from Stainless Works. All tubes are CNC mandrel bent for optimal flow and made from 304 stainless steel for maximum corrosion resistance.
Features 1-7/8" or 2" primary tubes and 3" collectors, connecting to factory head pipe and factory catalytic converters. Headers are fully TIG welded and back purged for strength and durability.
Built from corrosion-resistant 304 stainless steel and fully TIG welded for strength and durability at our state-of-the-art facility in Streetsboro, Ohio — engineered for long-term performance.
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American-made from raw material to finished product
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TIG welded by skilled craftsmen for strength and beauty
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Lifetime warranty on material and craftsmanship
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Direct bolt-on fit for 2000–03 8.1L Vortec V8
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Available with 1-7/8" or 2" primary tubes
| Vehicle Fitment | 2000–03 Chevy Silverado / GMC Sierra 2500HD & 3500 — 8.1L Vortec V8 2000–03 Chevy Suburban 2500 — 8.1L 2000–03 Chevy Avalanche 2500 — 8.1L Motorhome Class A Workhorse W-Series (P32/P42 Chassis) |
| System Type | Long Tube Header Kit |
| Primary Tube Size | 1-7/8" or 2" |
| Collector Size | 3" |
| Catalytic Converters | Uses Factory Cats |
| Connection | Factory Head Pipe |
| Material | 304 Stainless Steel |
| Welding | TIG Welded & Back Purged |
| Warranty | Lifetime |
| Origin | Made in USA — Streetsboro, Ohio |
⚠️ IMPORTANT FITMENT NOTES
Bare Headers will fit Tahoe/Avalanche. Leads will require modification to fit.
Does NOT fit lifted vehicles due to the driveshaft angle change that will hit the driver side header crossing over.
This header system fits the 2000–2003 8.1L Vortec V8 in the following applications:
✓ Chevy Suburban 2500 — 8.1L
✓ Chevy Avalanche 2500 — 8.1L
*Bare Headers fit Tahoe/Avalanche — leads require modification
*Designed for motorhome applications
✗ Does NOT fit lifted vehicles
Due to the driveshaft angle change that will hit the driver side header crossing over.
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Driver & Passenger Side Headers x2
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O2 Extensions x2
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Clamps x3
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Bolt Kit — 16 Pieces
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RTV Tube
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Installation Instructions
Questions? Call us at 800-878-3635 | Mon–Fri 7:30am–4:30pm EST
Built To Order in 4 Weeks — Free Shipping on Orders $50+
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2000-03 Silverado/W-Series 8.1L Long Tube Header Kit
I've had these on my 01' 2500HD for over 10 years and 2 different engines and they are phenomenal, the highest quality, they flow very well, probably one of the best features is they don't leak, anywhere, not at the flange ir reducer. The price seems steep, but after 10 years they still look great. I won't but anything else.
