Description
Engine cooling efficiency depends on proper coolant flow management, and restrictors are essential for maintaining optimal operating temperatures under load. By controlling water outlet pressure, these restrictors help stabilize cooling system performance and prevent cavitation in high-RPM applications. Whether you’re tuning a street engine or preparing for track duty, the right restrictor size ensures your cooling system works in harmony with your overall setup.
The Moroso 63440 set delivers three precisely machined restrictors in the most common sizes, allowing you to dial in the ideal flow characteristics for your specific engine and cooling demands.
- Set of 3 restrictors
- 2-1/8 in OD
- ID sizes: 5/8 in / 3/4 in / 1 in
- Aluminum construction
- Color-anodized finish
- SBF / GM V6 V8 compatible
- Bolt-on installation
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