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.
Features:
- Anodized Sinister Blue
- CNC Machined from T6-6061 Billet Aluminum
- Etched Sinister Diesel Logo
- Replacement for failure-prone plate that uses a gasket
- Fits 2001-2014 GM Duramax Coolant Reservoirs
- O-Ring Included
Includes:
- (1) Sinister Diesel Coolant Black-Off Plate
