On the rear of the Duramax Diesel trucks from 2001-2022, there is a coolant block off plate. The factory plate is made from cast aluminum and features a gasket for the mating surface. This plate is prone to coolant leakage due to warpage or gasket failure over the years. Merchant Automotive has recognized this problem and created a better solution.
This is the Merchant Automotive Duramax Billet Aluminum Diesel coolant block off plate. This plate upgrades your factory cast aluminum coolant block off plate with a billet aluminum plate that is built to perform better than your OEM plate. It features a 6061 aluminum construction with a black anodized finish. These plates are manufactured in house at our USA facility. To eliminate the chances of a gasket failure, MA has included a built in O-ring on this billet plate. This o-ring provides better sealing and longevity over the factory gasket. It also makes it very easy to install. You will reuse your factory hardware with this new plate.
- Upgrade For Cast Block Off Plate
- Great For Replacing Corroded Factory Plate
- No Gasket Needed
- 6061 Aluminum Construction
- Machined In House In The USA
- Black Anodized Finish
- Built In O-Ring
- MA Aluminum Coolant Block Off Plate