Fits select 2002-2020 Subaru Baja, Forester, Impreza, Legacy, Outback, and WRX STI (EJ20/EJ25 engines).

The Torque Solution Short Oil Fill Tube (TS-SU-587) is engineered to solve clearance issues commonly encountered in modified Subaru engine bays. By replacing the tall factory oil fill neck with a low-profile alternative, this tube provides the necessary room for aftermarket front-mount intercooler (FMIC) piping, custom intake tracts, and larger turbocharger setups that would otherwise contact the stock plastic tube.

• Direct replacement for the factory oil fill tube
• Low-profile design maximizes engine bay clearance for performance upgrades
• Compatible with both Subaru EJ20 and EJ25 engine platforms
• Designed to withstand high engine temperatures and oil exposure
• Manufacturer Part Number: TS-SU-587

Fits select 1997-2025 GM vehicles including Chevrolet Silverado/GMC Sierra, Corvette, Camaro, Tahoe, and Yukon (6.6L/2.8L Duramax and 4.8L-7.0L LS/LT Gas Engines).

Upgrade your engine bay with the Wehrli Custom Fabrication (WCFab) Billet Oil Fill Cap. Unlike plastic decorative covers that simply slip over the original part, this is a complete, CNC-machined replacement for the factory plastic unit. It features a robust machined cam lock for a secure fit and includes a fresh o-ring seal to ensure a leak-free performance. The clear anodized finish provides a durable, professional aesthetic that matches other WCFab billet accessories like coolant tank and brake reservoir caps.

• Direct OEM replacement for GM part numbers: 97350955, 97216410, 12573341, 12677347
• CNC machined from high-grade billet aluminum in the USA
• Durable clear anodized finish for corrosion resistance
• Includes high-quality replacement o-ring seal
• Precision machined cam lock engagement for exact fitment
• Discrete Wehrli Custom logo engraved on the underside
• Manufacturer Part Number: WCF100442

Fits select 1997-2025 Chevrolet, GMC, Cadillac, Hummer, and Pontiac vehicles equipped with Duramax diesel engines (6.6L / 2.8L) or LS-series gasoline V8s (4.8L, 5.3L, 5.7L, 6.0L, 6.2L, 7.0L).

Upgrade your engine bay with the WCFab Billet Aluminum Oil Fill Cap. Unlike simple cosmetic covers that slide over existing parts, this is a complete, one-piece direct replacement for the fragile factory plastic cap. Precision CNC-machined in the USA from high-quality billet aluminum, it provides a secure, leak-free seal while significantly improving the aesthetics of your Duramax or LS-based engine.

Each cap features a durable black anodized finish for superior corrosion resistance and a precision-machined cam-lock engagement system to ensure a perfect fit. The underside is engraved with the Wehrli Custom logo, and the unit includes a new O-ring seal for a tight lock against the valve cover or fill neck. It is designed to match other WCFab billet reservoir caps for a cohesive engine bay look.

• Direct OEM replacement for GM part numbers: 97350955, 97216410, 12573341, 12677347
• CNC machined from billet aluminum in the USA
• Black anodized finish for maximum durability
• Precision machined cam-lock engagement
• Includes pre-installed O-ring seal
• Installs in seconds with no tools required
• Manufacturer Part Number: WCF100443

Fits 1998-2010 Dodge Ram 2500 and 3500 (Cummins).

Replace the fragile factory plastic cap in your engine bay with the Wehrli Custom Fabrication (WCFab) Billet Aluminum Oil Fill Cap. Unlike simple slip-on covers, this is a complete, standalone replacement cap CNC-machined in the USA from high-grade billet aluminum. It features a clear anodized finish for superior corrosion resistance and a professional look that lasts.

This cap installs in seconds and includes a new O-ring seal to ensure a proper, leak-free seat. It is designed to match the fitment of the factory component precisely while providing the durability of machined metal.

• CNC machined billet aluminum construction
• Clear anodized finish for long-term protection
• Direct OEM replacement (not a cover)
• Includes new O-ring seal
• Proudly Made in the USA
• Manufacturer Part Number: WCF100394

Note: Not compatible with WCFab X D&J Billet Valve Covers (model WCF100330 or WCF100366). Fitment with other aftermarket billet valve covers is not guaranteed.

Fits 2008-2014 Subaru WRX and 2008-2021 Subaru STI.

The Torque Solution Oil Fill Tube Relocation kit is designed to solve clearance issues commonly encountered when installing rotated turbocharger setups or oversized aftermarket intake inlets. In the tight confines of the EJ-series engine bay, the factory oil fill tube often interferes with large compressor housings or custom intercooler piping. This kit moves the fill point to a more accessible location, ensuring you can run high-performance forced induction components without physical interference.

• Provides essential clearance for rotated turbo and large inlet configurations
• Engineered for a secure, leak-free fit to the engine block
• Maintains easy access for routine oil changes and maintenance
• Manufacturer Part Number: TS-SU-757