Replacement for failure-prone plate that uses a gasket
Fits 2014-2014 GM Duramax Coolant Reservoirs
O-Ring Included
Product Details
Coolant Block Off Plate by Sinister Diesel®. The OEM block-off plate relies on a gasket that may leak over time. In contrast, the Sinister Diesel billet block-off plate is thicker and features a durable O-Ring seal. This O-Ring is crafted for maximum longevity.
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