- 4-port hardline crossover connects all four cylinder head steam corners simultaneously.
- Stainless steel hardline construction ensures zero expansion under high cooling system pressure.
- Low-profile design provides critical clearance under tight aftermarket intake manifolds.
- Prevents hot spots and detonation on rear cylinders by equalizing coolant flow.
- Includes high-temperature o-rings and mounting hardware for immediate installation.
This comprehensive 4-port hardline steam vent kit connects all four corners of GM LS cylinder heads (LS1, LS2, LS3, LS6) to ensure equalized coolant distribution and complete elimination of hot spots. Engineered with durable stainless steel hardlines and precision aluminium blocks, it provides maximum clearance under low-profile intake manifolds while keeping cylinder head temperatures perfectly balanced.