Shorty Headers | Truck & SUV (1999-2013) — Manufacturer part number: 25-1016.

(In Stock)

Speed Engineering headers are made out of 304 stainless steel and offer great quality, performance, and affordability. Our headers are mandrel bent, tig welded, and feature natural stainless steel construction. All of our headers have been dyno proven. We stand behind our headers in saying you will not find a better fitting, quality built, budget header for your vehicle.

Features include:

• Mandrel Bent Tubing
• Race Version with "NO" Air & EGR Fittings
• 1 5/8" Primaries
• 2 1/2" Collectors
• Gains over 12+ rwhp
• V8 Engines Only
• 4.8L, 5.3L, 6.0L, 6.2L Engines
• CNC Machined Flanges
• Natural Stainless Steel
• Standard Graphite Manifold Gaskets

Vehicle Applications:

• 1999-2006 Chevrolet Truck & SUV (2wd/4wd) 4.8L, 5.3L
  
• 2007-2013 Chevrolet Truck & SUV (2wd/4wd) 4.8L, 5.3L, 6.0L, 6.2L
  
• 1999-2006 GMC Truck & SUV (2wd/4wd) 4.8L, 5.3L
  
• 2007-2013 GMC Truck & SUV (2wd/4wd) 4.8L, 5.3L, 6.0L, 6.2L
  
• 2007-2013 Cadillac Truck & SUV (Awd) 4.8L, 5.3L, 6.0L, 6.2L
  
• 2001-2006 Chevrolet Avalanche (2wd/4wd) 4.8L, 5.3L
  
• 2007-2013 Chevrolet Avalanche (2wd/4wd) 4.8L, 5.3L, 6.0L, 6.2L

Note: Works on factory single exhaust system. Traditional y pipe system.

Note: Only been tested on 1/2 ton applications. 

Fitment and ordering

Confirm the vehicle, engine, dimensions and application restrictions listed above before ordering. Speed Engineering parts are designed to work with Speed Engineering components; mixing brands may require modifications.

Available upgrades and related Speed Engineering parts

Use the selectors above to include upgrades with this product. The links below are for reference or separate purchases; do not also buy an upgrade separately if you have already selected it above. Check quantities, included parts, and fitment.

• LS Multi-Layer Steel Gaskets
• Standard Zinc Bolts - LS
• "RED" 10" Total Length Wires
• "RED" 12" Total Length Wires
• "BLACK" 10" Total Length Wires
• "BLACK" 12" Total Length Wires
• Spark Plug Wire Fire Sleeves

Manufacturer specifications and availability checked October 4, 2026. Availability refers to the manufacturer and can change; it does not indicate stock held at Speedzone.

Returns: All Speed Engineering product sales are final. No returns are accepted on Speed Engineering products. Please verify fitment before ordering. See our Return Policy for additional terms. This does not limit any consumer rights that cannot be waived under applicable law.