Wehrli Custom Fabrication 100362 Spin-On Fuel Filter Housing Upgrade Kit 6.6L L5P Duramax Short Bed

The Wehrli Custom Fabrication WCF100362 Fuel Filter Housing Kit is a direct-fit upgrade designed for 2020–2024 GM Silverado/Sierra 2500HD/3500HD short bed trucks equipped with the 6.6L L5P Duramax diesel engine. This kit replaces the factory cartridge-style fuel filter with a more capable spin-on canister-style filter, increasing fuel filter capacity and extending the interval between filter changes.

Key Features:

• Billet aluminum construction — Machined from billet aluminum with a gray anodized finish and engraved WCFab logo for a premium, lasting appearance
• Spin-on canister upgrade — Replaces the OEM cartridge-style filter with a higher-capacity spin-on canister-style filter for improved filtration and longer service intervals
• Direct OEM location install — Installs in the same location as the stock cartridge filter base using OEM-style quick-disconnect fuel line fittings for a clean, factory-style fit
• Cold-weather optimized — Keeps the fuel flow path across the PTC heating element, ensuring maximum filtration effectiveness in cold climates
• 4-micron filtration — Includes a Donaldson 4-micron fuel filter and water separator (Donaldson P/N P553203) for superior fuel cleanliness
• Fuel pressure monitoring port — Features a 1/8" NPT port for easy fuel pressure monitoring
• No tuning required — Fully compatible with stock trucks; no ECM tuning or additional modifications needed
• Replaces OEM Part Numbers: GM #23149526 and #84711317

Kit Includes:

• Donaldson 4-micron fuel filter and water separator (P/N P553203)
• Anodized billet aluminum filter base with integral mounting
• Distribution filter block / filter coupler
• OEM-style quick-disconnect fittings
• 1/8" NPT fuel pressure monitoring port

Important Note: This kit is designed specifically for short bed 2020–2024 L5P Duramax trucks. It is not compatible with 4500/5500 medium duty trucks equipped with the L5D Duramax engine. For 2017–2019 short/long bed and 2020–2024 long bed trucks, see WCF100361.