Mishimoto LS Heater Core Bypass Hose Black for GM LS Engines

If you're doing an LS swap, chances are you won't be running a heater core in the platform you're swapping. Whether you're doing an LS swap or building your LS-powered racecar, the Mishimoto Silicone GM LS V8 Heater Core Bypass Hose is the easiest and cleanest solution for bypassing your heater core. Our bypass hose is constructed from heat and pressure resistant 5-layer silicone and tapers from 3/4" to 5/8" to fit the in" and out" ports on your water pump. Bypassing the heater core with a bypass hose is the preferred method, as opposed to blocking off the ports. This allows coolant to flow for your thermostat to function properly and avoid overheating. As with all our products, the Mishimoto Silicone GM LS V8 Heater Core Bypass Hose is backed by our signature Mishimoto Lifetime Warranty. Complete radiator coolant hose kit designed to maintain proper coolant flow and system pressure. Includes durable, heat-resistant hoses for leak prevention, reliable performance, and a precise, easy installation.

• Bypassing instead of blocking water pump ports allows coolant to flow to thermostat and avoids overheating
• Allows you to bypass heater core
• Fits all GM LS engines

The Mishimoto LS Heater Core Bypass Hose Black is an essential component for LS engine swaps or racing builds where the heater core is removed or bypassed. Constructed from durable, heat- and pressure-resistant 5-layer silicone, this hose ensures reliable performance under demanding conditions. Designed to taper from 3/4 inch to 5/8 inch, it fits seamlessly onto the water pump ports, facilitating efficient coolant flow and preventing overheating. Bypassing the heater core using this hose maintains proper coolant circulation, which is critical for thermostat operation and engine temperature regulation. This approach is preferred over blocking ports, as it preserves system integrity and promotes optimal engine performance. The Mishimoto bypass hose is compatible with all GM LS engines, including the 2013-2015 Chevrolet Corvette, Camaro, SS, Pontiac G8, and Cadillac CTS models, making it a versatile solution for a variety of applications. Easy to install, it provides a clean, professional look while ensuring leak-free operation and long-term durability. Backed by Mishimoto’s lifetime warranty, this hose offers peace of mind and dependable performance for your custom build or racecar project.

Features:

• Constructed from heat- and pressure-resistant 5-layer silicone for durability

• Tapers from 3/4 inch to 5/8 inch to fit water pump ports

• Designed for bypassing the heater core in GM LS engines

• Maintains proper coolant flow to prevent overheating

• Compatible with a wide range of GM LS models including Chevrolet, Pontiac, and Cadillac

Fitment:
1997 Chevrolet Corvette Base
1998 Chevrolet Camaro Z28
1998 Chevrolet Camaro Z28 SS
1998 Chevrolet Corvette Base
1998 Chevrolet Corvette Indianapolis 500 Pace Car
1998 Pontiac Firebird Formula
1998 Pontiac Firebird Trans Am
1999 Chevrolet Camaro Z28
1999 Chevrolet Camaro Z28 SS
1999 Chevrolet Corvette Base
1999 Pontiac Firebird Formula
1999 Pontiac Firebird Trans Am
2000 Chevrolet Camaro Z28
2000 Chevrolet Camaro Z28 SS
2000 Chevrolet Corvette Base
2000 Pontiac Firebird Formula
2000 Pontiac Firebird Trans Am
2001 Chevrolet Camaro Z28
2001 Chevrolet Camaro Z28 SS
2001 Chevrolet Corvette Base
2001 Pontiac Firebird Formula
2001 Pontiac Firebird Trans Am
2002 Chevrolet Camaro Z28
2002 Chevrolet Camaro Z28 SS
2002 Chevrolet Corvette Base
2002 Pontiac Firebird Formula
2002 Pontiac Firebird Trans Am
2003 Chevrolet Corvette 50th Anniversary Edition
2003 Chevrolet Corvette 50th Anniversary Edition Pace Car
2003 Chevrolet Corvette Base
2004 Chevrolet Corvette Base
2004 Pontiac GTO Base
2005 Chevrolet Corvette Base
2005 Chevrolet SSR Base
2005 Pontiac Grand Prix GXP
2005 Pontiac GTO Base
2006 Cadillac CTS V
2006 Chevrolet Corvette Base
2006 Chevrolet Corvette Z06
2006 Chevrolet Impala SS
2006 Chevrolet Monte Carlo SS
2006 Chevrolet SSR Base
2006 Chevrolet Trailblazer SS
2006 Pontiac Grand Prix GXP
2006 Pontiac GTO Base
2007 Cadillac CTS V
2007 Chevrolet Corvette Base
2007 Chevrolet Corvette Z06
2007 Chevrolet Impala SS
2007 Chevrolet Monte Carlo SS
2007 Chevrolet Trailblazer SS
2007 Pontiac Grand Prix GXP
2008 Buick LaCrosse Super
2008 Chevrolet Corvette 427 Limited Edition Z06
2008 Chevrolet Corvette Base
2008 Chevrolet Corvette Z06
2008 Chevrolet Impala SS
2008 Chevrolet Trailblazer SS
2008 Pontiac Grand Prix GXP
2008 Saab 9-7x Aero
2009 Buick LaCrosse Super
2009 Cadillac CTS V
2009 Chevrolet Corvette Base
2009 Chevrolet Corvette Z06
2009 Chevrolet Corvette ZR1
2009 Chevrolet Impala SS
2009 Chevrolet Trailblazer SS
2009 Pontiac G8 GXP
2009 Saab 9-7x Aero
2010 Cadillac CTS V
2010 Chevrolet Camaro SS
2010 Chevrolet Corvette Base
2010 Chevrolet Corvette Grand Sport
2010 Chevrolet Corvette Z06
2010 Chevrolet Corvette ZR1
2011 Cadillac CTS V
2011 Chevrolet Camaro SS
2011 Chevrolet Corvette Base
2011 Chevrolet Corvette Grand Sport
2011 Chevrolet Corvette Z06
2011 Chevrolet Corvette Z06 Carbon
2011 Chevrolet Corvette ZR1
2012 Cadillac CTS V
2012 Chevrolet Camaro SS
2012 Chevrolet Camaro ZL1
2012 Chevrolet Corvette Base
2012 Chevrolet Corvette Grand Sport
2012 Chevrolet Corvette Z06
2012 Chevrolet Corvette ZR1
2013 Cadillac CTS V
2013 Chevrolet Camaro SS
2013 Chevrolet Camaro ZL1
2013 Chevrolet Corvette 427
2013 Chevrolet Corvette Base
2013 Chevrolet Corvette Grand Sport
2013 Chevrolet Corvette Z06
2013 Chevrolet Corvette ZR1
2014 Cadillac CTS V
2014 Chevrolet Camaro SS
2014 Chevrolet Camaro Z/28
2014 Chevrolet Camaro ZL1
2014 Chevrolet SS Base
2015 Cadillac CTS V
2015 Chevrolet Camaro SS
2015 Chevrolet Camaro Z/28
2015 Chevrolet Camaro ZL1
2015 Chevrolet SS Base
2016 Chevrolet SS Base
2017 Chevrolet SS Base

Air Freight Prohibited: false
Not Carb Approved: false
Ltl Freight Required: false
Prop 65: Y
Part Type: automotive
Epa: N/A
Carb Acknowledgement Required: false
Regular Stock: t
Units Per Sku: 1