LS swaps and race builds often need the heater core bypassed without blocking coolant flow through the water pump. This Mishimoto silicone bypass hose gives GM LS V8 builders a cleaner way to loop the heater ports while maintaining coolant circulation for proper thermostat operation.

Mishimoto MMHOSE-LSHB-BK Silicone GM LS V8 Heater Core Bypass Hose Features:

• GM LS V8 engine application
• Designed for heater core bypass routing
• 5-layer silicone construction
• Tapers from 3/4 in. to 5/8 in.
• Fits water pump inlet and outlet ports
• Black hose color
• Mishimoto Lifetime Warranty