SPDZ1 1-7/8" Long Tube Headers | 1999-2006 Chevy Silverado GMC Sierra 4.8L 5.3L 6.0L
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SPDZ1 1-7/8" Long Tube Headers for 1999-2006 GM LS Trucks & SUVs
Upgrade the exhaust flow, sound, and performance of your GM LS-powered truck or SUV with the SPDZ1 1-7/8" Long Tube Header Kit. Designed for 1999-2006 Chevrolet Silverado, GMC Sierra, Tahoe, Yukon, Escalade, Avalanche, and EXT applications, this system features large 1-7/8" primary tubes, 3" collectors, precision-cut flanges, oxygen-sensor bungs, and included exhaust gaskets.
The long-tube layout is designed to reduce exhaust restriction and support naturally aspirated, cammed, tuned, and higher-output 4.8L, 5.3L, and 6.0L LS-based engine combinations. The raw natural-metal finish gives the system a purpose-built performance appearance while allowing normal heat coloring after installation.
Key Features
- Full 1-7/8" primary tubes
- Long-tube header design for improved exhaust flow
- Large 3" collectors
- Precision-cut, thick header flanges
- Mandrel-bent tubing for smoother airflow
- Welded oxygen-sensor bungs
- Natural raw-metal finish
- Designed for GM Gen III LS-based V8 truck engines
- Includes left and right long-tube headers
- Includes exhaust manifold gaskets as pictured
Vehicle Fitment
- 1999-2006 Chevrolet Silverado V8
- 1999-2006 GMC Sierra V8
- 1999-2006 Chevrolet Tahoe V8
- 1999-2006 GMC Yukon V8
- 2002-2006 Chevrolet Avalanche V8
- 2002-2006 Cadillac Escalade V8
- 2002-2006 Cadillac Escalade EXT V8
Engine Compatibility: 4.8L, 5.3L, and 6.0L LS-based V8 engines. Fitment may vary by chassis, transmission, drivetrain, suspension configuration, and previous exhaust modifications.
Important Installation Notes
- Professional installation is strongly recommended.
- Exhaust fabrication, connection pipes, tuning, oxygen-sensor extensions, spark-plug wire protection, or additional hardware may be required depending on the vehicle.
- Some 4L80E-equipped vehicles may require minor clearance work around the transmission bellhousing area.
- Earlier 2500-series chassis configurations may have additional suspension or frame-clearance considerations.
- Verify vehicle, engine, transmission, drivetrain, and exhaust configuration before ordering.
Competition Use Notice: This product is intended solely for closed-course competition vehicles that are not registered or operated on public roads. The purchaser is responsible for confirming all federal, state, and local emissions requirements before installation.