01-17 Duramax Fleece Coolant Block Off Plate Shirts Adequate fuel flow is vital

Adequate fuel flow is vital to producing maximum efficient/clean horsepower

The best part is when you run at lower pressures

Durable 5 mm thick silicone is twice as thick as the factory hose to ensure long-lasting performance

Note: $196

Provides 100 percent traction on demand without affecting on-road drivability or driveline wear

01-17 Duramax Fleece Coolant Block Off Plate Shirts Adequate fuel flow is vitalUpgrade your rear engine cover and stop the coolant leaks for good! Fleece's blocking plate for 2001 2017 GM Duramax diesels is thicker than the stock plate and has an integral square cut O ring with no gasket required. OE covers are prone to leakage over time, our billet coolant block off plate with an integral O ring is an upgrade for your rear engine cover and will the stop the coolant leaks for good. Direct Replacement for GM P N: 97941204 Fleece