SLP Headers, 1-5/8'' Equal-Length 2004-07 Grand Prix/Regal/Monte Carllo.

Now, in response to the ever-increasing popularity of the front-drive W-Body vehicle family, our engineers have created a high-performance header package for the 3.8-liter "3800 Series" V6.

Like our hot-selling LS1 Tuned-Length Long Tubes, SLP's new W-Body headers offer unsurpassed ease of installation and a horsepower increase you can really feel. We're confident you won't find a better-performing, higher-quality V-6 header anywhere.

NOTES: These headers may cause your vehicle's "Service Engine" light to illuminate. This is a result of changes GM made to its diagnostic software in 2004 and is NOT an indication of a mechanical problem. Until we have developed an O2 simulator for this application, you may delete the "Service Engine" light with HP Tuner Software. Requires Installation Kit #30071 and either Catalytic Converter #30073 or Race Pipe #30072. For off-road use only. Photo depicts #30070.

SLP W-BODY HEADERS:

• Are constructed from mandrel-bent 409 stainless steel and feature an aluminum-ceramic performance coating, inside and out. The "other" brand uses nickel-plated mild steel.
• Require no welding or cutting for installation!
• Feature 1 5/8", one-piece primaries; a 3" collector; and a built-in, 3" flex joint.
• Use strategically placed oxygen-sensor fittings that eliminate the possibility of sensor-to-body contact under heavy throttle.
• Are available with an SLP Catalytic Converter or off-road Race Pipe.
• Are equipped with genuine OEM flanges.
• Have provisions for the factory air pump, EGR, and oxygen sensors.
• Are compatible with both supercharged and naturally aspirated engines.
• Produce up to 25 additional horsepower, depending on application.
• Are covered by our Performance Guarantee and Lifetime Limited Warranty.