Product Description
Overview
The WEHRLI CUSTOM FAB WCF100333 4" INTAKE KIT FOR 2003-2007 FORD 6.0 POWERSTROKE is a high-flow upgrade for factory-turbo 6.0L trucks. This kit replaces the restrictive stock intake with a straight-through 4" system, improving airflow to the turbo, sharpening throttle response, and adding that classic turbo whistle under load.
Built by Wehrli Custom Fabrication (WCFab), this intake kit combines performance and show-quality looks with a dry air filter, Outerwears-style pre-filter cover, and your choice of custom powder coat colors. It is designed specifically for the factory-style turbocharger on 2003–2007 6.0L Powerstroke trucks.
Key Features
- High-flow 4" intake tubing for improved airflow to the turbo
- Dry open-element air filter for excellent filtration and easy service
- Outerwears-style pre-filter cover helps repel dirt, dust, and debris
- Silicone boots and T-bolt clamps for secure, leak-free connections
- Custom powder-coated finish in a wide range of WCFab colors
- Engineered specifically for factory-style 6.0L Powerstroke turbochargers
- Supports future performance upgrades (tuning, exhaust, injectors, turbo, etc.)
What’s Included
- 4" high-flow intake tube (powder coated in your chosen WCFab color)
- Dry, high-flow air filter element
- Outerwears-style pre-filter cover
- Silicone boots and clamps
- Bracketry and basic mounting hardware required for installation
- Instructions from WCFab (included with the kit or available via manufacturer resources)
Vehicle Fitment
Engine: 6.0L Powerstroke – factory-style turbo only
- 2003–2007 Ford F-250 Super Duty 6.0L Powerstroke
- 2003–2007 Ford F-350 Super Duty 6.0L Powerstroke
- 2003–2007 Ford F-450 / F-550 Super Duty 6.0L Powerstroke (where equipped with 6.0L Powerstroke pickup-style intake layout)
Does NOT fit: 6.4L (2008–2010) or 6.7L (2011–2024) Powerstroke engines, and does not fit non-factory turbo configurations without custom modifications.
For more Ford air intake options, shop our Ford Powerstroke Air Intakes & Filters.
Installation & Emissions Notes
- Direct bolt-on kit for 2003–2007 6.0L Powerstroke trucks with the stock-style turbo
- PCV / crankcase ventilation reroute is required to keep oil vapor from saturating the open-element filter (PCV reroute components sold separately)
- Expect increased turbo whistle and a more pronounced induction sound compared to stock
- Emissions & CARB: This intake is not CARB legal and is not approved for use on pollution-controlled vehicles in California. It is intended for off-road or competition use where permitted.
- Shipping restriction: This product cannot be shipped to California due to emissions regulations.
- Many WCFab powder-coated parts are built to order; typical lead times are often 10–15 business days from the manufacturer depending on color selection and workload.
Recommended Supporting Upgrades
Pair your WCFab intake with other proven 6.0L upgrades from CPP Diesel for a more complete package:
- CPP XD271 Banjo Bolt Upgrade Kit for 03–07 Ford 6.0L Powerstroke – improves fuel flow and supports higher power levels.
- Explore additional 6.0L performance and engine parts in our Ford Powerstroke Parts catalog.
Specifications
| Specification | Detail |
|---|---|
| Brand | Wehrli Custom Fabrication (WCFab) |
| Manufacturer Part Number (MPN) | WCF100333 |
| Intake Tube Size | 4.0" high-flow intake tubing |
| Filter Type | Dry, open-element air filter with pre-filter cover |
| Finish | Custom powder-coated finish (single-stage or two-stage depending on color) |
| Vehicle Application | 2003–2007 Ford 6.0L Powerstroke trucks with factory-style turbo |
| Emissions / CARB Status | Not CARB legal; cannot be sold or shipped to California for on-road use |
| Shipping Weight (approx.) | 11.0 lbs |
| Package Dimensions (approx.) | 12.0" W × 12.0" H × 32.0" L |
| Current CPP Price* | $431.65 (price subject to change; see product page for live pricing) |
| Shipping | Free shipping to the lower 48 U.S. states (per CPP Diesel shipping policy) |
*Pricing and availability are subject to change without notice. Always refer to the live product page for the latest information.
Frequently Asked Questions
Will this intake fit my 2005 F-250 6.0L Powerstroke?Yes. This kit fits 2003–2007 Ford Super Duty trucks equipped with the 6.0L Powerstroke and a factory-style turbocharger. It will not fit 6.4L or 6.7L Powerstroke engines, and it is not designed for non-stock turbo setups without additional custom work.
Do I need custom tuning after installing the WCF100333 intake?
Custom tuning is not strictly required just to run this intake, but it is recommended for customers chasing maximum performance. A tune can help the ECM fully take advantage of the increased airflow and optimize fueling, drivability, and overall power gains. Always monitor EGT, boost, and other critical parameters when modifying your 6.0L.
Does this kit replace the factory airbox?
Yes. The WCFab 4" intake kit replaces the factory airbox and intake tract with an open-element dry filter, 4" intake tube, and pre-filter cover. It retains critical sensor locations and is designed to work with the stock-style turbo inlet while freeing up airflow and cleaning up the engine bay.
Is a PCV / crankcase ventilation reroute really required?
Yes, a PCV reroute is required with this style of open-element intake. The factory system vents crankcase vapors into the intake stream, which can saturate the filter and coat the intake tube with oil residue. Rerouting the PCV helps keep the filter clean and ensures consistent performance. Use your preferred 6.0L-specific reroute solution and follow all local emissions regulations.
Is the WCF100333 intake kit legal for on-road use in California?
No. This product is not CARB approved and is labeled for off-road or competition use in emissions-controlled areas. It cannot be shipped to California for on-road vehicles. Always check your local and state regulations before installing emissions-related components.
How much louder is this intake compared to stock?
Expect a noticeable increase in turbo whistle and induction sound, especially under acceleration and load. At light throttle cruising the sound increase is modest, but under boost the turbo will be more audible than with the stock airbox.
