**missing the lines*LS Engine Steam Vent/Coolant Crossover 4-Corner Kit — Fits LS1/LS2/LS3/LS6/LS7/LS9/LSX & LQ4/LQ9/LM7 — CNC Aluminum Manifolds + Braided Hoses — OEM 12602544/12694769 (LW189)

Additional Details from the Manufacturer

This item information is coming from the manufacturer. Some of the details may vary from the Nellis Auction listing. Please check the Quality Rating and Notes for information specific to this listing

More features

• Engine Compatibility — Wide LS / GM Coverage： Engineered to fit GM LS family engines (LS1, LS2, LS3, LS6, LS7, LS9, LSX) and common derivatives (LQ4, LQ9, LM7) used in factory and swap applications. Verify fitment for your chassis and accessory layout.
• Complete 4-Corner Steam Vent & Coolant Crossover Kit：Full kit includes CNC-machined aluminum corner manifolds, stainless-braided or nylon-sheathed hoses, fittings, O-rings and installation hardware — everything for a clean LS steam vent/crossover install.
• CNC Aluminum Manifolds & High-Quality Hoses： Precision CNC-machined aluminum manifolds resist corrosion and provide leak-free sealing; supplied braided or nylon-sheathed hoses handle coolant temps and routing demands better than stock rubber lines.
• Reduces Hotspots & Simplifies Bleeding — Ideal for Swaps： Proper steam venting and crossover routing help evacuate air pockets and reduce localized hot spots in the head/cooling passages — makes bleeding simpler and improves cooling reliability for high-output or swapped LS engines.
• Who Should Buy & Installation Advice： Perfect for LS swap builders, performance shops and DIY enthusiasts. Professional installation recommended for custom chassis or tight engine bays; always pressure-test and verify all fittings after install.