8 best heater bypass kits of 2025 - Reviews by New York Garden

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The 8 best heater bypass kits of 2025

Updated: May, 08 2025

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In this September 2025 review, we explore the 8 best heater bypass kits options available. Our expert analysis, led by Antonio Smitham, ensures you find the perfect fit.

626-001 Upgrade Aluminum Engine Heater Core Bypass Kit with 5/8

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best heater bypass kits

626-001 Upgrade Aluminum Engine Heater Core Bypass Kit with 5/8" 3/4" Hose Fit for Most Common Heater Hoses (with seal tape & cap)

4.5

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Dorman 626-001 Engine Heater Core Bypass Kit Universal Fit

4.7

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626-001 Engine Heater Core Bypass Kit Engine Heater Core Bypass Kit With 5/8" & 3/4" Hose Fit For Most Common Heater Hoses

4.7

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626-001 Upgrade Aluminum Engine Heater Core Bypass Kit with 5/8" 3/4" Hose Compatible with Most Common Heater Hoses

4.6

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Engine Heater Core Bypass Kit with 5/8" 3/4" Hose,Compatible with GM Chevy Silverados Tahoes Yukons Honda Civic Ford Jeep,Replacement for 626-001,Universal Fit Most Common Leaking Failed Heater Core

4.6

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626-001 Upgrade Aluminum Engine Heater Core Bypass Kit with 5/8" 3/4"Hose Fit For Most Common Heater Hoses

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Heater Core Repair Bypass Kit - Brass Fittings - 5/8" x 3/4" Combination Hose

4.5

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KDP 3-ply Reinforced Silicone Engine Heater Core Bypass Kit with 2 Stainless Steel Clamps universal Fit for Most Common Heater Hoses

4.4

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Antonio Smitham

contributing writer

I'm passionate about making the world a better place. With over a decade of experience working in a number of industries, I've been fortunate enough to meet people who care about the world, and whose actions make a difference. Whether it's volunteering with organizations that create environmental changes, or working with companies that are committed to making ethical decisions, I'm motivated to be a part of the change. Contributing Writer.