

🔥 Upgrade your LS engine’s heartbeat with flawless coolant flow!
The LS Heater Core Bypass Hose Coolant Crossover (Part #551699) is a durable, heat-resistant rubber hose designed for seamless compatibility with a broad range of LS and LT engines. Featuring dual-size hose ends (5/8" and 3/4") and included clamps, it ensures a secure, leak-proof fit that optimizes coolant flow by bypassing the heater core. This plug-and-play replacement part guarantees reliable performance and easy installation, making it an essential upgrade for maintaining peak engine efficiency.











| Brand | HEMRUNK |
| Color | Black |
| Connector Type | Cross |
| Material | Rubber |
| Size | 5/8 inches, 3/4 inches |
| Thread Size | 0.95 |
B**N
Good quality
Perfect fit
A**R
Perfect solution.
Did exactly what it was intended to do.
A**R
Fits fine good quality
Fixed my overheating issue.
F**K
Excellent part
Works great
D**A
Works
Does what it says. Fits fine.
D**A
Works
Very well made
A**R
Heater bypass hose
Fit and worked perfect for my 6.2 L92
G**R
Gb mobile mechanic
Perfect item..
Trustpilot
2 months ago
2 days ago
1 month ago
1 month ago