WEHRLI CUSTOM FAB WCF100217 PREMIUM DURAMAX/CUMMINS REAR DIFFERENTIAL COVER BOLT KIT

Product Description

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The WEHRLI CUSTOM FAB WCF100217 PREMIUM DURAMAX/CUMMINS REAR DIFFERENTIAL COVER BOLT KIT is the perfect finishing upgrade for your Wehrli differential cover installation. Designed specifically for WCFab AAM 11.5" rear differential covers, this premium hardware kit replaces the standard socket head bolts with high-strength stainless steel ARP 12-point fasteners for superior clamping strength, corrosion resistance, and a clean high-performance appearance.

When building a serious diesel truck, small details matter. This kit provides precision-matched ARP fasteners and washers engineered to secure Wehrli differential covers with exceptional reliability while adding a professional motorsports-style finish. Whether your truck is a heavy-duty tow rig, off-road build, or high-performance diesel street truck, this upgrade ensures your differential cover stays securely sealed under demanding conditions.

Key Features:

• Premium ARP stainless steel 12-point fasteners
• Matched ARP stainless steel washers included
• Improved clamping strength compared to standard hardware
• Corrosion-resistant stainless construction
• Provides a clean, professional motorsports-style appearance
• Direct upgrade for WCFab rear differential covers
• Simple bolt-on installation

Fitment:

• Designed for use with WCFab AAM 11.5" Rear Differential Covers
• Compatible with WCFab Differential Cover Part Numbers:
• WCF100113 – AAM 11.5" Duramax/Cummins Rear Differential Cover
• WCF100114 – 2020+ GM / 2019+ Ram AAM 11.5" Rear Differential Cover
• Typical applications include:
• 2001–2019 GM 2500HD / 3500HD Duramax trucks with AAM 11.5 rear axle
• 2003–2024 Ram 2500 / 3500 Cummins trucks with AAM 11.5 rear axle

What’s Included:

• 12 ARP stainless steel 12-point bolts
• 12 ARP stainless steel washers

FAQ

What differential covers does this bolt kit fit?

This kit is designed specifically for Wehrli Custom Fab AAM 11.5" differential covers including part numbers WCF100113 and WCF100114.

Are these bolts stronger than the standard hardware?

Yes. The kit uses high-strength stainless ARP 12-point fasteners which provide superior clamping force and durability compared to standard hardware.

Will this kit fit OEM differential covers?

This hardware kit was designed specifically for WCFab differential covers. Fitment with OEM or other aftermarket covers is not guaranteed.

Why upgrade differential cover hardware?

Upgraded hardware improves clamping strength, corrosion resistance, and adds a clean professional appearance to your drivetrain build.