Features:
Fits all GM LS engines
Allows you to bypass heater core
Bypassing instead of blocking water pump ports allows coolant to flow to thermostat and avoids overheating
5-layer silicone construction is heat and pressure resistant to provide a durable, long-lasting solution
Tapers from 3/4-IN to 5/8-IN for a perfect fit
Perfect for LS swaps
Includes clamps
Available in Black, Blue, and Red
Mishimoto Lifetime Warranty
Install Difficulty: 2
OptionLabel: Black
Features:
Fits all GM LS engines
Allows you to bypass heater core
Bypassing instead of blocking water pump ports allows coolant to flow to thermostat and avoids overheating
5-layer silicone construction is heat and pressure resistant to provide a durable, long-lasting solution
Tapers from 3/4-IN to 5/8-IN for a perfect fit
Perfect for LS swaps
Includes clamps
Available in Black, Blue, and Red
Mishimoto Lifetime Warranty
Install Difficulty: 2
OptionLabel: Blue
Features:
Fits all GM LS engines
Allows you to bypass heater core
Bypassing instead of blocking water pump ports allows coolant to flow to thermostat and avoids overheating
5-layer silicone construction is heat and pressure resistant to provide a durable, long-lasting solution
Tapers from 3/4-IN to 5/8-IN for a perfect fit
Perfect for LS swaps
Includes clamps
Available in Black, Blue, and Red
Mishimoto Lifetime Warranty
Install Difficulty: 2
OptionLabel: Red
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.