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Description
Born from a garage dream in Sandwich, Illinois, and now headquartered in DeKalb, Illinois, Wehrli Custom Fabrication (WCFab) has earned a formidable reputation in the diesel performance world. From its hands-on beginnings to its expansion into a team of 50-plus skilled builders, WCFab continues to elevate diesel upgrades, even as the brand evolves into fabrication and powder coating excellence.
At its core, Wehrli is dedicated to powering Duramax, Powerstroke, and Cummins trucks with rugged, high-performance parts that meet the real-world demands of hauling, towing, and racing. Every product is proudly Made in the USA, from turbo kits and cold air intakes to heavy-duty Allison transmission builds capable of handling up to 750hp, thoroughly crafted in a climate-controlled clean room.
WEHRLI CUSTOM FABRICATION—WHERE DIESEL DREAMS ARE FORGED INTO REALITY, IN METAL YOU CAN FEEL AND PERFORMANCE YOU CAN TRUST.
Whether you’re upping airflow with precision CNC-machined intakes and intake horns, clearing the engine bay with billet block-off plates, or commanding raw transportation power with a 750+hp Allison transmission, Wehrli’s work is synonymous with resilience and peak performance. Products like their L5P Duramax high-flow turbo intake horn boast a 27% increase in flow, proving that function and form can coexist beautifully.
Customer support is a serious affair at WCFab they stand firmly behind their fits and finishes Led by the Wehrli brothers and a crew fueled by diesel passion, the brand’s mission is clear: deliver top-tier craftsmanship, unmatched performance, and relentless customer service.
FREQUENTLY ASKED QUESTIONS
We get a lot of calls and e-mails each day with various product, vehicle, and installation questions. Some are completely off the wall and can even catch us off guard at times, but many others are fairly routine, so we thought we'd post some of the most popular questions regarding Wehrli Custom Fabrication that can hopefully be a good resource for you.
Q: What kind of vehicles does Wehrli Custom Fabrication specialize in?
A: WCFab is renowned for high-performance upgrades tailored to Duramax, Powerstroke, and Cummins diesel trucks, as well as side-by-sides and UTVs. Their custom metal fabrication work spans turbo kits, intake systems, traction bars, and heavy-duty engine and transmission components.
Q: Where is WCFab located, and how big is their facility?
A: Based in DeKalb, Illinois, WCFab has grown rapidly from a small garage to their current 112,000sq/ft, state-of-the-art facility. They invest heavily in CNC machining, laser cutting, powder coating (including ceramic), and fabrication to maintain tight quality control.
Q: Are the parts truly made in the USA?
A: Yes, every component is proudly Made in the USA, designed, machined, coated, and tested in-house. This commitment underpins their reputation for fitment accuracy and peak performance.
Q: What products are WCFab best known for?
A: Popular offerings include high-flow turbo intake kits, robust traction bar assemblies, billet engine mounts, transmission braces, and full turbo systems catering to diesel enthusiasts. These upgrades are renowned for enhancing airflow, horsepower, and adaptive towing capability.
Q: How has WCFab built its reputation in the diesel community?
A: With unmatched craftsmanship and performance focus, WCFab is celebrated across the diesel world. Media recognition highlights their rapid growth and innovative products, while community forums note the "highest standards of craftsmanship and fitment".
Q: What kind of customer assurance do they offer?
A: WCFab provides robust customer support, a nationwide dealer network, and certified installers. Their pre- and post-sale service ensures customers receive detailed technical assistance and unwavering quality.
Q: Is WCFab pushing into new markets?
A: Yes, their latest facility expansion has increased production capacity and added fabrication lines, enabling ongoing growth into new vehicle platforms and markets beyond diesel trucks