Rear Coolant Crossover Block Off Plug Steam Port Head Tube For GM LS Corvette

Rear Coolant Crossover Block Off Plug Steam Port Head Tube for GM

This rear coolant crossover block off plug steam port head tube for GM blocks off the rear cylinder head steam ports on LS engines.

Overview

This rear coolant crossover block off plug steam port head tube for GM is designed to seal unnecessary rear steam vent ports on LS engine cylinder heads. Highly useful for custom engine builds, this rear coolant crossover block off plug steam port head tube for GM prevents coolant leaks in tight spaces. This rear coolant crossover block off plug steam port head tube for GM ensures a clean, reliable block-off solution for performance setups.

Built For Performance

• CNC-machined from billet aluminum for exceptional strength and light weight.
• Anodized finish protects against corrosion, heat, and engine fluids.
• Includes high-temperature sealing O-rings to ensure a leak-proof fit.
• Low-profile design allows clearance for custom intake manifolds.

Fits These Machines

• for GM LS Series Engines
• for Chevrolet Corvette LS1 LS2 LS3 LS6 LS7

On-The-Job Use

• Blocking off the rear steam vents on LS cylinder heads during engine swaps.
• Preventing coolant loss and maintaining correct cooling system pressurization.
• Modifying custom intake setups that interfere with factory steam tubes.

Specs At A Glance

Good To Know

Q: Why do I need to block off the rear steam ports? A: Many aftermarket intake manifolds do not clear the stock rear steam tubes, making low-profile block-off plugs necessary.

Q: Are mounting bolts included? A: You should verify the contents of the listing, as some kits require utilizing the original factory mounting bolts.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.