38mm Steel Block Expansion Plugs Mustang GT 96-10

Properly sealed cooling passages are critical to maintaining coolant pressure and preventing leaks. These 38mm steel block expansion plugs are designed to seal the casting core holes found in the engine block and cylinder heads of 4.6L V8 engines. Used during engine rebuilds and repairs, they help contain coolant within the engine's cooling system to support proper operation.

Features and Benefits:
- Direct-fit replacement components 
- Ideal for engine rebuilds and repairs 
- Supports proper cooling system operation
- Seals engine block and cylinder head core holes 
- Maintains coolant pressure within cooling passages 
- Helps prevent coolant leaks 
- 38mm diameter construction 
- Steel material resists rust and wear

Constructed from high quality steel, the expansion plugs resist rust and wear while providing a secure fit in factory casting openings. By maintaining the integrity of the cooling system, the plugs help reduce the risk of coolant loss and overheating. They can also help relieve pressure in freezing conditions by pushing out before damage occurs to the engine block.