Steam Vent Adapters & kits. They are designed to eliminate trapped air and steam from your engine to prevent hot spots or overheating. The complete kits are available to plumb your LS engine and include the appropriate hose and hose ends to make installation a breeze. These kits are more attractive than the OEM rigid hard lines and provide flexibility when using aftermarket intakes and other accessories on performance vehicles. This kit provides the adapters and hose to connect to the front steam outlets on the cylinder heads only. Use two GM OEM steam tube block-off plugs (GM # 12602540) on the rear of the cylinder heads. These kits may require modifications to the radiator or water pump to attach the outlet house.
- Eliminates Trapped Air - Hot Spots - Overheating
- Custom Look For LS Engines
- More Attractive Than OEM Hard Lines
- Adjustable Pivoting Steam Vent Adapters
- Complete Kits
Holley Performance Emission Code 6: Vehicle emissions regulations are not applicable to this item
This steam tube kit works w/ the Holley LS Hi-Ram, Holley Single Plane, and Sniper Fabricated Intake Manifolds on the GM LS Engine.
These kits may require modifications to the radiator or water pump to attach the outlet house.
This part was previously available in a Holley Kit # VK040038.
About Earl's Performance
Earl's Performance Products was founded by Earl Fouts in 1955 in Lawndale, California. The mission was to supply high-quality military aircraft surplus plumbing components directly to the racing industry from a small retail outlet. As the military surplus market dried up, Earl recognized the need for continuity of supply for the racing market and pioneered the Earl's range of hoses and fittings that are still used today. In doing so he created the racing aftermarket plumbing industry.