GM LS Four-Corner Stainless Steel Steam Vent Crossover Kit
Four-corner steam vent system for compatible GM LS engines, combining 304 stainless steel tubing with CNC-machined aluminum manifold and corner ports in a black anodized finish.
- Connects cylinder-head steam ports to help route trapped steam out of the cooling system
- Designed to clear factory Gen III knock sensors
- Source-listed applications: LS1, LS2, LS3, LS6, LS7 and LS9
- Condition: New
Confirm intake-manifold and cylinder-head clearance before installation. Some LS3/L92 heads have blocked rear ports and require additional preparation by a qualified installer.
