Feature:1. Universal Applications: Coolant crossover steam vent kit can be used for all LS series engine, such as LS1 LS2 LS3 LS6 LS7 LSX Engines.2. Compatible Air Intakes: Replacement for Holley Hi Ram; Replacement for Holley Sniper; Replacement for Edelbrock ProFlo XT; Replacement for Frankenstein, etc.3. Function: When steam is trapped and pressure builds up, this can lead to pre blowouts, head gasket and piston failure, etc. This kit hooks up the engine, removes the trapped steam, and delivers it where it is needed.4. Exquisite Craftsmanship: CNC aluminum manifolds and corner ports, combined with 304 stainless steel, and the aluminum block is black anodized to ensure long lasting.5. Easy Operation: Coolant crossover steam vent kit fits almost any running style air intake and can be easily attached to all modified engines, perfect replacement parts.Specification:Item Type: Coolant Crossover KitMaterial: Stainless Steel, CNC AluminumFitment: Fit for LS series LS1 LS2 LS3 LS6 LS7 LSX EnginesCompatible Air Intakes:Replacement for Holley Hi RamReplacement for Holley SniperReplacement for Edelbrock Pro-Flo XTReplacement for Edelbrock Super VictorReplacement for FrankensteinReplacement for Edelbrock Victor JuniorReplacement for Stock Style Plastic Gen 3 Truck Air Intake.Package List:1 x Coolant Crossover Kit 1 x Roll of TapeNote:1. This kit will clear factory knock sensors on Gen 3 engines.2. For LS3 L92 and other heads have the rear ports blocked off. This block off is a simple aluminum plug. You can knock this plug out from the bottom out (if heads are off) with a punch. It can also be carefully drilled out as our corner blocks seal off the top flat surface. DO NOT enlarge the hole size overall. Care must be taken to not let aluminum chips fall into the head passage so we suggest multiple careful drills with vacuuming in between and possibly greasing the drill bit.