The GMC Sierra 3500 HD Wehrli Performance Air Intake is a must-have upgrade for any automotive enthusiast looking to enhance their 2001-2004 vehicle's performance. With its high flow intake horn finished in a striking Chevy Orange, it offers significant improvements in airflow and engine responsiveness.

This precision-engineered 4-inch High Flow Cast Aluminum Turbo Intake Horn is designed specifically for the 6.6L Duramax Diesel engine, replacing the restrictive OEM turbo mouthpiece. It is compatible with both factory and upgraded turbos, providing increased airflow to your turbocharger for noticeable boosts in engine performance. Enthusiasts with max-effort tuned trucks can expect 10-15 HP gains, while those with upgraded turbochargers can experience as much as 20 HP improvements.

Features

• True 4" Inlet Turbo Intake
• Compatible with 4" Boot Connection Aftermarket Intakes
• CNC Machined Cast Aluminum Construction
• 40% Better Flow than Stock
• Includes Mounting Hardware
• Custom Powder Coat Finish
• Made in USA
• O-Ring Seal at Turbocharger Face

When considering a performance upgrade for your GMC Sierra 3500, this Wehrli Performance Air Intake delivers superior gains in horsepower and throttle response. Pair it with our 4" Cold Air Intake Kits or Stage 1 High Flow Bundle Kits for an optimized power boost. If you have further questions or if you're interested in our professional installation and customization services, feel free to call us at 512-982-9393 for our Austin, Texas location, or 562-981-6800 for our Los Angeles, California location. If you’re purchasing multiple items, contact us for shipping discounts. Installation services are available at both of our premises.

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov