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Wehrli  |  SKU: WCFWCF100170
3% off

Wehrli Custom Fabrication 2001-2010 GM 2500/3500 HD L5P Duramax Engine Swap Mounts

USD 59671 USD 61517
Built to order item. Lead times are typically 2-4 weeks before shipping.

Need a more accurate estimate? Call (636) 429-7020 and our team will be happy to help.

Can I pick up my order or have it installed at your shop?

Absolutely. We offer local pickup on most products and full professional installation at our shop in Washington, MO. Whether you just want to grab your parts or have our techs handle the install, we’ve got you covered. Give us a quick call at 636-429-7020 or message us to schedule a visit — we’ll make sure the parts are ready when you arrive.

How do I know if this part fits my vehicle?

Unsure if it’ll fit? No problem — that’s what we’re here for. Send us your vehicle’s year, make, and model, and we’ll verify fitment before you order. We can also point you toward compatible upgrades or supporting parts if needed.

What if I need to return a product or it’s defective?

Most unused items can be returned within 30 days in their original packaging. Some products are covered by a manufacturer’s warranty as well. If something arrives damaged or doesn’t meet your expectations, just let us know — we’ll help you get it replaced, refunded, or repaired. (Tracking updates are also emailed automatically once your order ships.)

What's the lead time on custom or fabricated parts?

Many of our parts are built to order — especially fabricated or performance components. These can take additional time to produce before shipping. Lead times vary by manufacturer and demand, but we’ll always keep you updated along the way. If you’re working on a tight schedule, reach out before ordering at 636-429-7020 and we’ll confirm current availability or estimated ship dates.

Description

Upgrade your 2001-2010 Chevrolet Silverado 2500HD/Silverado 3500HD and GMC Sierra 2500HD/Sierra 3500HD chassis with Wehrli Custom Fabrication L5P Duramax HD Engine Swap Mounts. Designed to install the latest-generation L5P 6.6L Duramax engines into earlier GM HD classic body trucks, these heavy-duty swap mounts provide increased strength, reduced engine movement, and improved durability for high-performance builds. MPN: WCF100170.

Why Choose the Wehrli Custom Fabrication L5P Duramax Engine Swap Mounts?

  • L5P Duramax Swap Compatibility – Developed specifically to install L5P 6.6L Duramax engines into 2001-2010 GM 2500/3500 HD chassis.
  • High-Performance Durability – Torture tested in-house on high horsepower builds to withstand demanding applications.
  • Reduced Engine Flex – Helps minimize engine movement and driveline deflection for improved performance and reliability.
  • Heavy-Duty Construction – Designed to address common OEM engine mount failure points found in early-generation HD trucks.
  • Polyurethane Bushings – High-performance bushings provide increased strength and long-term durability.
  • Corrosion Resistant Finish – Finished with a durable semi-gloss black powder coat for improved protection and an OEM-plus appearance.
Kit Includes
  • Wehrli Custom Fabrication L5P Duramax HD Engine Swap Mounts
  • High-performance polyurethane bushings
Installation Highlights

These engine swap mounts are designed to bolt into the factory frame locations of 2001-2010 GM HD chassis trucks, providing a clean installation solution for L5P Duramax engine conversions.

Fits These Models
  • 2001-2010 Chevrolet Silverado 2500HD 6.6L Duramax Swap Applications
  • 2001-2010 Chevrolet Silverado 3500HD 6.6L Duramax Swap Applications
  • 2001-2010 GMC Sierra 2500HD 6.6L Duramax Swap Applications
  • 2001-2010 GMC Sierra 3500HD 6.6L Duramax Swap Applications
Specifications
  • Engine Compatibility: L5P 6.6L Duramax
  • Chassis Compatibility: 2001-2010 GM 2500/3500 HD chassis
  • Finish: Semi-gloss black powder coat
  • Bushing Material: High-performance polyurethane
Key Features at a Glance
  • L5P Duramax Swap Ready - Allows newer-generation Duramax engines to be installed into classic GM HD trucks.
  • Heavy-Duty Mount Design - Built for high horsepower performance applications.
  • Reduced Engine Movement - Helps protect driveline components by limiting excessive deflection.
  • Polyurethane Bushings - Adds strength and durability compared to factory-style mounts.
  • OEM-Plus Appearance - Semi-gloss black finish blends cleanly into custom builds.
Notes
  • MPN: WCF100170
  • SKU: WCF100170
  • Designed for performance applications using L5P Duramax engines in earlier GM HD chassis trucks.

SKU: WCF100170

Questions? We’re Here to Help.

Have questions about upgrades for your Duramax? Contact FASS Motorsports and we’ll get you dialed:

Phone: 636-429-7020

Email: info@fassmotorsports.com

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