2001-2004 Duramax 4" Intake Horn (WCF100535)

Fits

The WCFab 4" Intake Horn for 2001-2004 Duramax trucks replaces the stock turbo mouthpiece with a high-flow cast aluminum design, boosting airflow for better engine response and power. It fits both stock, upgraded drop-in IHI turbos, and aftermarket intakes, offering up to 20 HP gains with turbo upgrades. Powder-coated to your choice, made in the USA. Ideal paired with WC Cold Air Intake and performance kits for maximum power.

Part Number: WCF100535

Superseded Part Number: WCF100342

• 4" Intake Horn
• Precision CNC-Machined Cast Aluminum Construction
• Compatible with stock and OEM-style aftermarket drop-in turbochargers with larger compressor wheels
• Bolt On Upgrade
• No Tuning Required
• No other modifications or upgrades necessary!
• O-Ring Seal at Face of Turbocharger
• Includes Mounting Hardware
• Custom Powder Coat Finish
• Made in USA

• More colors may be available please call for availability
• Not compatible with OEM intake
• Works with performance aftermarket intake systems utilizing a 4" Boot Connection with bead roll, like our 4" Intake Kits. Will your 3rd party intake be compatible? If the rubber / silicone connection of your current air intake is molded into the intake pipe / is not removable, that intake will not work / fit with this product.
• Requires modification or removal of OEM wire harness track that runs in front of the OEM intake horn for proper clearance. Wire loom provided to help complete this process during the installation. Please see instructions document for further details.