Heavy Duty Heater Core Bypass Hose Handles Heat Tight With Clamps Controls Cooling Crossover For Quick Warm Up On Ls1 Lsx Ls2 Ls3 Lq4 Lq9 V8 Blocks Fits Oem 551699 Sweats Easy Keeps Ride Running Slick Black

Universal LS1 LS2 LS3 LSX V8 Heater Core Bypass Tube
✔️ 1 pack fits GM V8 blocks measures 4.7 inches black rubber

This heavy duty crossover tube routes coolant directly between the cylinder block and heater core for rapid cabin warming. Technicians toss it onto General Motors small block V8 setups to keep things comfortable during chilly morning starts and stop-and-go traffic.

✅ Controls coolant flow for quick warm up times
✅ 4.7 inch overall length withstands extreme engine heat
✅ Seals tightly without coolant loss or pressure drops
✅ Resists internal clogging for unobstructed fluid circulation
✅ Comes ready to install with two stainless metal clamps included

💡 What helps manage engine thermal cycles efficiently?
Installing a dedicated coolant crossover tube keeps your rig handy for quick street cruises or weekend road trips.
- Channels pressurized fluid directly to the inlet plenum for faster block temps
- Stabilizes system pressure to stop cavitation and protect aluminum heads
- Eliminates dead zones where coolant stagnates and loses its anti-corrosion properties
- Smooths out thermostat cycling while keeping the water pump from overworking