Stainless Works Chevy/GMC Truck 1999-02 Headers 4WD with Converters (part # CT9902), built from 304 stainless steel by Stainless Works in Streetsboro, Ohio.
304 Stainless Steel
TIG Welded
1999–02 Silverado 4.8L/5.3L
Long Tube Headers
2-1/2" Collector
Made in USA
Overview
Unlock the full potential of your 1999–02 Chevy or GMC Truck 4.8L or 5.3L with premium long tube headers from Stainless Works. These headers come with an air tube fitting on the primary and 1-3/4" primaries that flow into 2-1/2" slip-fit collectors with O2 bungs welded into the collector that flow into 2-1/2" high-flow catalytic converters.
Designed specifically for the GMT800 platform, this system includes high-temp RTV silicone and an 8mm Header Bolt Kit for a complete bolt-on installation.
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.
Why Stainless Works
- American-made from raw material to finished product
- TIG welded by skilled craftsmen for strength and beauty
- Lifetime warranty on material and craftsmanship
- Direct bolt-on fit for 1999–02 Silverado/Sierra 4.8L & 5.3L
- Includes air tube fitting on primary and O2 bungs in collectors
Key Features
Long Tube Design
Improves exhaust scavenging for more power and torque.
1-3/4" Primary Tubes
CNC mandrel bent for smooth, unrestricted airflow.
2-1/2" Slip-Fit Collectors
O2 bungs welded into collectors for sensor installation.
High-Flow Catalytic Converters
EPA compliance with improved flow for maximum performance.
Mandrel Bent Tubing
Smooth airflow with zero restriction bends.
TIG Welded Construction
Precision welds for maximum durability.
Specifications
| Vehicle Fitment |
1999–02 Chevy Silverado / GMC Sierra 4.8L & 5.3L |
| System Type |
Long Tube Header Kit with High-Flow Cats |
| Primary Tube Size |
1-3/4" |
| Collector Size |
2-1/2" Slip-Fit with O2 Bungs |
| Catalytic Converters |
2-1/2" EPA Compliant High-Flow |
| Air Tube Fitting |
Included on Primary |
| Hardware Included |
High-Temp RTV Silicone & 8mm Header Bolt Kit |
| Material |
304 Stainless Steel |
| Welding |
TIG Welded |
| Warranty |
Lifetime |
| Origin |
Made in USA — Streetsboro, Ohio |
⇩ Download Installation Instructions (PDF)
See It In Action
Sound Comparison and Features — 1999–02 Silverado Long Tube Header System
What's In The Box
- Driver & Passenger Side Headers x2
- Catalytic Converters x2
- Lead Pipes x2
- Y-Pipe
- Exhaust Donut Gasket
- Clamps x6
- Long Bolts x2
- Washers x4
- Nyloc Nuts x2
- Bolt Kit — 16 Pieces
- RTV Tube
- Installation Instructions
Frequently Asked Questions
Will these headers fit my 1999–02 Silverado or Sierra?
Yes. These long tube headers are designed specifically for the 1999–2002 Chevy Silverado and GMC Sierra trucks with the 4.8L or 5.3L V8 engines. They feature 1-3/4" primaries, 2-1/2" slip-fit collectors with O2 bungs, and include air tube fittings on the primary.
Do these headers include catalytic converters?
Yes. This system includes 2-1/2" high-flow catalytic converters that are EPA compliant and designed for improved flow while maintaining emissions compliance.
What is included in the hardware kit?
The system includes high-temp RTV silicone and an 8mm Header Bolt Kit with 16 pieces for a complete bolt-on installation.
What warranty is included?
Stainless Works provides a lifetime warranty on material and craftsmanship — covering the full life of the product, not just a limited term.
Questions? Call us at | Mon–Fri 7:30am–4:30pm EST
Built To Order in 4 Weeks — Free Shipping on Orders $50+
This Listing
- Brand: Stainless Works
- Part number: CT9902
- Product type: Headers
- Fitment: 1999-2002 Chevy/GMC Truck 4WD
- Configuration: 4WD, Stock Exhaust (Factory Connect), High-Flow Cats
- EPA status: Testing
- Shipping weight: 52 lb
California Prop 65 warning applies to this product.
Emissions note: headers, downpipes and catless/high-flow pipes may not be legal for street use in all states. Check your local emissions laws before installing.
Fitment note: Stainless Works systems are application-specific (year, cab/bed, transmission and factory exhaust). Send us your VIN before ordering and we will confirm fitment: 954-507-6261 or sales@americanmuscleperformance.net.
