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The Mishimoto Silicone GM LS V8 Heater Core Bypass Hose is an essential upgrade for LS engine swaps and racecar builds, providing a clean and reliable method to bypass the heater core. Constructed from durable, heat- and pressure-resistant 5-layer silicone, this bypass hose ensures optimal performance under demanding conditions. The hose tapers from 3/4 inch to 5/8 inch to precisely fit the “in” and “out” ports on your water pump, simplifying installation and ensuring a secure connection.
Bypassing the heater core instead of blocking the water pump ports maintains proper coolant flow to the thermostat, preventing overheating and ensuring your engine operates within safe temperature ranges. This bypass hose is compatible with all GM LS engines, making it a versatile choice for various applications ranging from street performance to racing. The black silicone finish provides a sleek look that complements your engine bay’s aesthetic and resists cracking or deterioration over time.
As with all Mishimoto products, the LS Heater Core Bypass Hose is backed by the company’s lifetime warranty, offering peace of mind for your investment. Whether you're performing an LS swap or building a dedicated racecar, this bypass hose simplifies your cooling system modifications and enhances engine reliability. Its straightforward design and durable construction make it an ideal replacement or upgrade for your GM LS engine, ensuring consistent coolant flow and optimal performance during your driving adventures.
Features:
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
Order Processing
All orders are processed and shipped within 24 hours of purchase (excluding weekends and holidays).
Orders placed after 3:00 PM EST may ship the following business day.
Shipping Methods
Customers select their preferred shipping method and speed at checkout.
Shipping times are determined by the carrier and cannot be guaranteed by us.
Tracking information will be provided once your order has shipped.
Shipping Coverage
If your package arrives damaged, please notify the delivery driver immediately and contact the shipping carrier to file a claim.
You must report any missing or damaged items within 14 days of delivery.
After this time, we cannot be held responsible for lost or damaged items.
Return Window
You have 30 days from the date of delivery to request a return.
After 30 days, we are unable to accept returns, exchanges, or refund requests.
Eligibility
Items must be returned in their original condition—unused, unwashed, and with all tags and packaging intact.
Certain products may not be eligible for return (e.g., special-order items, customized products, or perishable goods).
Items that have been altered, installed, or modified cannot be returned.
Return Process
Contact our Customer Support team to request a Return Authorization (RMA) before sending items back.
Once your return is approved, you’ll receive instructions on where to send the product.
Customers are responsible for return shipping costs unless the item was defective or incorrect.
Refunds
Refunds are issued to the original payment method once the returned item has been received and inspected.
Please allow 5–10 business days for the refund to appear on your account.
In some cases, a restocking fee may apply (if applicable, this will be disclosed during your return authorization).
