New York Garden
About UsCategoriesPlants & FlowersBlogAffiliate DisclaimerHow we rankContact
Pools, Hot Tubs & Supplies
Heaters & Accessories

The 8 best heater bypass kits of 2025

The 8 best heater bypass kits of 2025

Updated: May, 08 2025

Antonio Smitham
Antonio Smitham

author

Share

We independently review everything we recommend. When you buy through our links, we may earn a commission. As an Amazon Associate I earn from qualifying purchases. Learn more ›

In this June 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
View on Amazon

The 8 best heater bypass kits of 2025

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)
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

View detail
view on amazon
  • 【Applicable Model】:Include 2 pcs 5/8" and 2pcs 3/4" connectors can fit the most common heater hoses. Upgrade hose for Dorman 626-001, Compatible with GM Chevy Silverados Tahoes Yukons Honda Civic Ford Dodge Jeep Cherokee etc.

  • 【Quality Assurance】: Material upgrade, made of high quality 6061 billet aluminum, more durable and reliable.

  • 【Component】: 1 X Engine Heater Core Bypass Kit ;1 X Heater Hose Connectors 3/4" x 3/4" ; 1 X Heater Hose Connectors 5/8" x 5/8" ;1 X Seal tape; 4pcs Caps

  • 【Easy Installation】: Direct remove the heater core hose, and easily install the bypass kit. (Watch the installation video on YouTube for reference)

  • 【Save Money】: If your heater core is failing or leaking, it is recommended that you replace it promptly. But you can also use this heater core bypass kit to direct replace, also save money. NOTE: this is temporary repair solution.

  • 【Customer Service】: 1 year product quality warranty. Please get in touch with us at any time if the product has any quality issues, such as damage or vehicle fitment.

Dorman 626-001 Engine Heater Core Bypass Kit Universal Fit
Dorman 626-001 Engine Heater Core Bypass Kit Universal Fit

4.7

View detail
view on amazon
  • Cost-effective fix - this heater core bypass kit offers an affordable alternative to replacing an entire failed heater core

  • Complete solution - contains components and hardware required to bypass a leaking or failed heater core, including interchangeable 5/8" and 3/4" hose fittings to adapt to most common heater hoses

  • Durable materials - the components in this kit are manufactured from quality materials for reliable service

  • Trustworthy quality - vehicle try-on tested, and backed by a team of product experts in the United States and more than a century of automotive experience

  • Support available - every Dorman part is backed by Dorman's ASE Blue Seal Certified technical support team

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

View detail
view on amazon
  • 【Ideal Replacement】- As time goes by, your heater core will be damaged, rusted and lose its function due to long working hours. At this time, you need our heater core to replace it to restore its working performance and make it safer.

  • 【Applicable Models】- Package include interchangeable 5/8" and 3/4" hose fittings to fit the most common heater hoses.

  • 【High Quality And Special】- Our brackets are durable, meet OEM specifications, and offer an affordable replacement solution that saves you a lot of time and money !

  • 【Easy Installation】- Our engine heater core bypass kit are directly replaceable and easy to install. (Watch the installation video on YouTube to better help you complete the installation)

  • 【Quality Assurance】: VODCACA is committed to producing high quality products and providing customers with a good shopping experience. if you encounter any quality problems during use, please feel free to consult us via Amazon mail. We will get back to you as soon as possible and provide you with a satisfactory solution.

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

4.6

View detail
view on amazon
  • 【Direct Replacement】If your heater core is failing or leaking, it is recommended that you replace it promptly, and our heater bypass kit offers an affordable alternative that will save you a lot of time and money.

  • 【Applicable Models】Includes interchangeable 5/8" and 3/4" hose fittings to fit the most common heater hoses.

  • 【High Quality】Material upgrade, made of high quality aluminum, more durable and reliable, factory tested several times before leaving the factory, meet or exceed OEM standards.

  • 【Easy Installation】Direct replacement, easy installation. (Watch the installation video on YouTube to better help you complete the installation)

  • 【Perfect Service】2 Year Warranty.Friendly return policy and customer service. If you have any questions, please contact us by email, we will reply you within 24 hours.

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
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

View detail
view on amazon
  • Excellent solution to bypass heater core:Universal fit,perfect for most older vehicle,aging heater core.Buy one engine heater core bypass kit just in case to bypass failed or leaking heater core.No need to replace the entire failed heater core

  • Premium Quality:The engine heater core bypass kit are made of durable quality materials for long-term use life,Replacement for OEM part number 626-001

  • Heat core failure symptoms:sweet maple syrup smell /steam coming from vents/coolant leaking on to interior floor/low coolant level at the resevior

  • Fitment: the engine heater core bypass kit fit for most vehicles. Our kit includes 5/8" & 3/4" hose fittings to adapt to most common heater hoses. Just check your heater core hose size and make sure one of them works. Compatible with GM Chevy Silverados Tahoes Yukons Honda Civic Ford Jeep Cherokee etc

  • Easy install&All-in-Kit: Direct replacement and many youtube installation videos will help you,don’t worry! Everything may need to make a leak-free connection, includes interchangeable 5/8"& 3/4" hose fittings + 5/8”&3/4” heater bypass caps + hose clamp

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

5

View detail
view on amazon
  • 【Complete Kit】: The Engine Heater Core Bypass Kit including rubber hoses, hose fittings 2×5/8", 2×3/4" fittings to fit the most common heater hoses.

  • 【Direct Replacement】: Heater cores are prone to damage or leaks over time, Replacing a broken heater core is time consuming and expensiveyou'll be able to replace them with our heater cores to keep your car running properly and save you a lot of time and money.

  • 【Higher Quality】: Made of high quality rubber and high quality metal. Rubber hose is resistant to oxidation and cracking, will not cause leakage, durable, each 626-001 is reliably tested to meet OEM specifications

  • 【Easy Installation】Our engine heater core bypass kit is simple and easy to install (you can watch the installation video on YouTube, which will help make it easy).

  • 【After sales service】 We offer a 2-year warranty. If you have any problems with the received goods, please feel free to contact our service team to solve them for you

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

4.5

View detail
view on amazon
  • Product Type: Heater Core

  • Brand: Jetuplusllc

  • Warranty: 1 Year

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

4.4

View detail
view on amazon
  • KDP heater core bypass kit is upgraded according to the products on the market, ensuring the premise of high quality and adapting to various unexpected scenarios to the greatest extent.We have our own moulds and tooling for this whole kit.

  • Universal fit and Cost-effective - this KDP heater core bypass kit offers an affordable alternative to replacing an entire failed heater core.

  • Complete solution- This heater core kit ontains components and hardware required to bypass a leaking or failed heater core.

  • DURABLE: The KDP heater core bypass hose is made of high quality silicone instead of normal rubber,the heater hose connectors are all made of PA66-GF33, which is durable and high temperature resistant and it won't cut the pipe as rough aluminun fittings.

  • Easy install and AlL-in -kit. You just need to push the hose on and fasten it with our matched worm clamp with a common screwdriver every family has.

5

55 ratings

Antonio Smitham
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.

Latest

The 11 best compact pool heaters of 2025
The 11 best compact pool heaters of 2025

May 9, 2025

by: Antonio Smitham

The 11 best energy-efficient pool heaters of 2025
The 11 best energy-efficient pool heaters of 2025

May 9, 2025

by: Antonio Smitham

The 9 best heaters for spa tubs of 2025
The 9 best heaters for spa tubs of 2025

May 9, 2025

by: Antonio Smitham

The 10 best quiet pool heaters of 2025
The 10 best quiet pool heaters of 2025

May 9, 2025

by: Antonio Smitham

The 10 best thermal pool blankets of 2025
The 10 best thermal pool blankets of 2025

May 9, 2025

by: Antonio Smitham

The 7 best booster pumps for pool heaters of 2025
The 7 best booster pumps for pool heaters of 2025

May 9, 2025

by: Antonio Smitham

The 10 best intex pool heaters of 2025
The 10 best intex pool heaters of 2025

May 9, 2025

by: Antonio Smitham

The 12 best heaters for inflatable hot tubs of 2025
The 12 best heaters for inflatable hot tubs of 2025

May 9, 2025

by: Antonio Smitham

The 11 best plug and play hot tub heaters of 2025
The 11 best plug and play hot tub heaters of 2025

May 9, 2025

by: Antonio Smitham

New York Garden is customer-supported. When you buy products through our site, we may earn an affiliate commission on featured products.

New York Garden

New York Garden

About UsPrivacy PolicyAffiliate DisclaimerHow we rankCareersContact

Follow us #nygarden

FacebookX (formerly Twitter)LinkedIn

© 2025 New York Garden. All rights reserved. Time Zone: Pacific Time (US & Canada).