HD Engine Mounts

Features:

• Fits 2017-2026 L5P Duramax trucks
• Includes left and right mounts
• Reduces engine flex under load
• Built for high-horsepower applications
• Helps prevent OEM mount failure
• Maintains OEM alignment features
• Durable polyurethane bushings included
• High-grade engine mounting hardware
• Thread-locker compound included
• Semi-gloss black powder coat finish
• Designed for performance use only
• Increases engine vibration and noise

Lock Down Your Duramax Power With Confidence

If you are pushing your L5P Duramax beyond stock limits, the last thing you want is your engine shifting under pressure. The Wehrli HD Engine Mounts are built to keep everything planted, giving your truck the stability it needs when torque starts to climb. From hard launches to heavy towing, these mounts help eliminate the slop that factory mounts simply cannot handle. Additionally, they are designed to prevent the common failures seen with OEM mounts, which can separate and lead to costly drivetrain damage. You will also notice improved consistency in boost delivery since reduced engine movement helps keep intercooler piping secure. The included high-grade hardware and thread-locker make installation straightforward and reliable right out of the box. Finished in a clean semi-gloss black powder coat, they bring both function and a refined under-hood look. This is the kind of upgrade that gives you peace of mind every time you lean into the throttle.

Engineered Strength For High Torque Duramax Applications

These heavy duty engine mounts are purpose-built for 2017-2026 GM Sierra and Silverado 2500HD and 3500HD trucks equipped with the 6.6L L5P Duramax. Each kit includes both left and right mounts, built to retain proper OEM alignment while significantly increasing structural strength. At the core of the design are performance polyurethane bushings, which offer greater resistance to deflection compared to factory rubber components. This added rigidity helps control engine movement, reducing stress on critical components like the transmission bellhousing and rear engine cover. Furthermore, limiting engine flex can help prevent boost leaks caused by shifting intercooler connections under load. The mounts are coated in a durable semi-gloss black powder finish to resist corrosion and wear over time. High-grade fasteners and thread-locker compound are included to ensure a secure installation that holds up under demanding conditions. Due to the increased stiffness of the design, additional engine vibration and noise should be expected, making these mounts best suited for high performance builds rather than daily-driven trucks.

Fitment: 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax L5P

Notes:

• Recommended for high-performance use only.
• Not recommended for daily-driven street trucks.
• Will increase engine vibration and noise.
• Designed for high-horsepower Duramax applications.
• Helps address broken OEM engine mounts.
• OEM mounts may separate under high load.
• Engine flex can contribute to boost leaks.
• Excess movement may stress drivetrain components.
• Fits 2017-2026 L5P Duramax trucks.
• California Prop 65 warning applies.