Heater Core Delete By pass Hose Coolant Crossover For LS1 LSX LS2 LS3 LQ4 LQ9
Heater Core Delete By pass Hose Coolant Crossover For LS1 LSX LS2 LS3 LQ4 LQ9
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Heater Core Delete Bypass Hose Coolant Crossover for LS
This molded bypass hose loops the coolant outlet and inlet ports on the engine water pump when deleting the heater core circuit.
Overview
This heater core delete bypass hose coolant crossover provides a reliable loop for the coolant flow when bypassing the vehicle heater core. By routing coolant directly back into the pump, this heater core delete bypass hose coolant crossover prevents air pockets and maintains proper block temperature. Performance engine builders and track car fabricators use this heater core delete bypass hose coolant crossover to simplify under-hood plumbing during engine swaps.
Built For Performance
- Molded U-shape design prevents kinking and maintains unrestricted coolant flow
- High-strength silicone or reinforced rubber construction resists extreme heat
- Engineered to fit standard water pump outlet diameters of 5/8 inch and 3/4 inch
- Simple slip-on installation requires basic hose clamps for a leak-free seal
Fits These Machines
- for LS1 Engines
- for LSX Engines
- for LS2 Engines
- for LS3 Engines
- for LQ4 Engines
- for LQ9 Engines
On-The-Job Use
- Bypassing a leaking passenger cabin heater core in an emergency or track car
- Simplifying cooling hose plumbing during custom engine swap projects
- Optimizing racing vehicles where interior climate control is deleted for weight reduction
Specs At A Glance
| Application | Heater Core Bypass / Deletion |
| Material | Reinforced High-Temperature Rubber |
| Inlet/Outlet Diameters | Fits standard 5/8-inch and 3/4-inch ports |
Good To Know
Q: Why do I need a looped hose instead of just capping off the ports? A: Capping the ports stops the bypass flow, which can lead to overheating, air pockets in the cylinder heads, and uneven block temperatures.
Q: Is this hose compatible with standard engine coolant? A: Yes, the material is highly resistant to traditional green ethylene glycol, Dex-Cool, and water-based coolant additives.
Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.
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