Wehrli WCF100185 High Flow Turbo Pedestal Kit for 2017-2023 L5P Duramax

Vehicle Fitment

• 2017-2023 Chevrolet Silverado 2500HD/3500HD (6.6L Duramax L5P)
• 2017-2023 GMC Sierra 2500HD/3500HD (6.6L Duramax L5P)
• 2019-2023 GM 4500/5500/6500 (6.6L Duramax L5D)

Fitment Notes

• Direct-fit replacement for the factory turbo pedestal - no modification required.

Features

• Cast from 316 stainless steel, machined in the USA
• 12.7% increased airflow over the factory pedestal
• Port-matched turbo and up-pipe openings for improved exhaust flow
• Thicker wall design prevents the cracking and warping common on the OEM pedestal
• Reinforced flange reduces heat distortion under sustained high-boost conditions
• Stronger, formed threads resist stripping compared to factory casting
• Includes ARP turbo-to-pedestal mounting bolts
• Built to handle upgraded turbos and aggressive tuning

Specifications

• Material: 316 Stainless Steel
• Airflow Increase: 12.7% over OEM
• Construction: Cast and Machined in USA

Included Components

• 1x High Flow Turbo Pedestal
• 4x ARP Turbo Mounting Bolts

Product Description

The factory turbo pedestal on the L5P Duramax has a well-documented weak point: thin walls that crack and warp once a truck is pushed past stock power, especially with an upgraded turbo or aggressive tuning. The Wehrli WCF100185 addresses that at its core, cast from 316 stainless steel with significantly thicker walls and a reinforced flange that resists the heat distortion that kills the OEM piece.

Beyond the durability gains, the port-matched openings at the turbo and up-pipes deliver a 12.7% airflow increase over stock, so the upgrade isn't just about surviving higher boost - it actually helps the turbo breathe better while doing it. Cast and machined entirely in the USA, it's a direct-fit replacement that comes with the ARP hardware needed to mount the turbo, making it a practical foundation piece for any L5P or L5D build running upgraded boost.