Coolant Bypass Kit for 2003 - 2018 Dodge Ram 5.9L/6.7L Cummins Engine
Coolant Bypass Kit for 2003 - 2018 Dodge Ram 5.9L/6.7L Cummins Engine

Coolant Bypass Kit for 5.9L 6.7L Cummins 2003-2018 Dodge Ram 2500 3500

$96.59
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Details

Product Overview

The Coolant Bypass Kit is a crucial aftermarket upgrade designed specifically for 5.9L and 6.7L Cummins engines in 2003 - 2018 Dodge Ram 2500 and 3500 trucks. It addresses one of the most persistent and damaging issues faced by these engines, enhancing their overall performance and reliability.

Ideal For

2003 - 2007 Dodge Ram 5.9L Cummins (Only Manual Transmission)

This kit is perfect for owners of 2003 - 2007 Dodge Ram trucks equipped with the 5.9L Cummins engine and a manual transmission. It helps optimize the engine's cooling system, ensuring consistent performance and reducing the risk of coolant - related problems.

2007.5 - 2018 Dodge Ram 6.7L Cummins (Manual & Automatic Transmissions)

For 2007.5 - 2018 Dodge Ram models with the 6.7L Cummins engine, whether manual or automatic transmission, this coolant bypass kit is an essential addition. It effectively tackles the coolant flow issues specific to the 6.7L engine, providing a reliable solution for improved engine longevity.
Shipping Details

Ontario CA / Springdale OH / Newark NJ
Package List

The complete coolant bypass kit includes a braided hose, AN O - ring fittings for a secure and leak - free connection, and billet hose brackets (for 2003 and later models).
Delivery Time

2-5 working days inland in the United States

Product details

Core Advantages

Solves Coolant Flow Problem

One of the major issues with the 6.7L Cummins engine is the inadequate coolant flow to the rear cylinders. This can lead to catastrophic consequences such as freeze - plug blowouts in over - temperature or over - pressure conditions. Our coolant bypass kit addresses this problem head - on, ensuring proper coolant circulation to all cylinders.

Lowers Coolant Temperature

By improving the coolant flow, the kit helps lower the coolant temperature at the rear cylinders. This is crucial as high coolant temperatures can cause excessive pressure build - up in the cooling system, leading to potential engine failures.

Ensures Consistent Temperatures

The kit ensures consistent temperatures across all six cylinders. This balanced temperature distribution helps prevent uneven wear and tear on the engine components, extending the engine's lifespan and improving its overall performance.

Prevents Pressure Build - Up

It effectively prevents damaging coolant pressure build - up. Unlike other brands that rely on excessive pressure, our coolant bypass kit adds a secondary thermostat that works based on temperature. This proactive approach solves the problem before pressure becomes a critical issue.

Technical Specifications

Secondary Thermostat Operation

The secondary thermostat in our coolant bypass kit operates based on temperature rather than excessive pressure. This innovative design ensures that the engine maintains optimal temperatures, preventing overheating and pressure - related problems.

Braided Hose and AN O - Ring Fittings

The complete kit comes with a braided hose and AN O - ring fittings. These high - quality components ensure a leak - free installation, providing peace of mind and reliable performance.

Billet Hose Brackets (for 2003+ Models)

For 2003 and later models, the kit includes billet hose brackets. These brackets are designed for durability and precise fitment, ensuring that the hoses are securely held in place.

Why Choose This Coolant Bypass Kit

Temperature - Based Solution

Unlike other coolant bypass kits on the market, our product uses a temperature - based secondary thermostat. This unique feature provides a more effective and reliable solution to the coolant flow and temperature issues in Cummins engines.

Complete and Leak - Free

The comprehensive nature of the kit, including the braided hose, AN O - ring fittings, and billet hose brackets (where applicable), ensures a complete and leak - free installation. This saves you time and effort in the long run, as you won't have to deal with leaks or additional part replacements.

Enhanced Engine Reliability

By addressing the coolant flow and temperature problems, our coolant bypass kit significantly enhances the reliability and longevity of your Cummins engine. This means fewer breakdowns and lower maintenance costs over the life of your vehicle.

Complete Package Contents

The complete coolant bypass kit includes a braided hose, AN O - ring fittings for a secure and leak - free connection, and billet hose brackets (for 2003 and later models). These components are carefully selected and manufactured to high standards, ensuring optimal performance and durability.

Compatibility List

2003 - 2007 Dodge Ram 5.9L Cummins (Manual Transmission)

This kit is fully compatible with 2003 - 2007 Dodge Ram trucks equipped with the 5.9L Cummins engine and a manual transmission. It provides a tailored solution to improve the engine's cooling system.

2007.5 - 2018 Dodge Ram 6.7L Cummins (Manual & Automatic Transmissions)

For 2007.5 - 2018 Dodge Ram models with the 6.7L Cummins engine, regardless of whether it has a manual or automatic transmission, our coolant bypass kit is designed to fit and function perfectly. It effectively addresses the specific coolant flow issues of the 6.7L engine.

  1. Dispatch Time: Orders will be shipped within 24 hours after successful payment.
  2. Delivery Time: 2-5 business days after dispatch (delivery speed depends on proximity to warehouse location).
  3. Return Window:7 days for unsatisfactory items45 days for quality-related issues
  4. Refund Processing: Refunds will be processed back to your original payment method within 2-4 business days after receiving the automated refund confirmation email (subject to bank verification).

General Information

What is a coolant bypass kit?

A coolant bypass kit is an aftermarket accessory designed to improve the coolant flow in your vehicle's engine. In the case of 5.9L and 6.7L Cummins engines in 2003 - 2018 Dodge Ram 2500 and 3500 trucks, it addresses the issue of inadequate coolant flow to the rear cylinders. By adding a secondary thermostat and optimizing the coolant path, it helps maintain consistent temperatures across all cylinders, preventing overheating and potential engine damage.

Why do I need a coolant bypass kit for my Dodge Ram with a Cummins engine?

One of the biggest problems with the 6.7L Cummins engine is the poor coolant flow to the rear cylinders. This can lead to extremely high coolant temperatures in these areas. When the engine is under stress, such as during heavy towing or high - speed driving, the excessive heat can cause the coolant to boil. This build - up of pressure can then blow out the freeze plugs, either externally or the smaller diameter plugs under the valve cover, resulting in a costly engine failure. A coolant bypass kit solves this problem by ensuring proper coolant circulation.

Compatibility

Which Dodge Ram models is this coolant bypass kit compatible with?

This coolant bypass kit is compatible with two main groups of Dodge Ram models:

  • 2003 - 2007 Dodge Ram 5.9L Cummins: It is suitable only for vehicles with a manual transmission.
  • 2007.5 - 2018 Dodge Ram 6.7L Cummins: It works for both manual and automatic transmission models.

Will this kit fit my specific year and engine combination?

As long as your Dodge Ram falls within the 2003 - 2007 range with a 5.9L Cummins and manual transmission, or the 2007.5 - 2018 range with a 6.7L Cummins (regardless of transmission type), this kit is designed to fit perfectly. The components are engineered to match the engine's specifications and cooling system layout.

Installation

Is the installation of this coolant bypass kit difficult?

The installation difficulty can vary depending on your mechanical skills. However, with basic automotive knowledge and the right tools, most DIY enthusiasts can complete the installation. The kit comes with detailed instructions that guide you through each step. It typically involves removing some existing hoses, installing the new braided hose, AN O - ring fittings, and the secondary thermostat. For 2003 and later models, you'll also need to install the billet hose brackets. If you're not comfortable with the installation, it's recommended to have a professional mechanic perform the job.

How long does it take to install the coolant bypass kit?

On average, a skilled DIYer can complete the installation in about 1 - 2 hours. If you're new to automotive repairs or encounter any unexpected issues, it may take a bit longer. A professional mechanic, with their experience and tools, can usually finish the installation more quickly, often within an hour.

Performance and Benefits

What performance improvements can I expect after installing the coolant bypass kit?

After installing the coolant bypass kit, you can expect several performance improvements:

  • Lower Coolant Temperatures: The kit helps lower the coolant temperature at the rear cylinders, reducing the risk of overheating.
  • Consistent Cylinder Temperatures: It ensures that all six cylinders maintain consistent temperatures, which can improve engine efficiency and power output.
  • Reduced Pressure Build - Up: By preventing excessive coolant pressure build - up, it reduces the likelihood of freeze - plug blowouts and other coolant - related failures.
  • Enhanced Engine Longevity: Overall, the improved cooling system can extend the lifespan of your Cummins engine, saving you money on costly repairs in the long run.

Will this kit improve my vehicle's fuel efficiency?

While the primary purpose of the coolant bypass kit is to improve the engine's cooling system, it can indirectly have a positive impact on fuel efficiency. When the engine operates at optimal temperatures, it runs more efficiently. Consistent cylinder temperatures can lead to better combustion, which may result in a slight improvement in fuel economy. However, the main benefits are related to engine reliability and performance rather than significant fuel savings.

Quality and Warranty

What is the quality of the components in this coolant bypass kit?

The coolant bypass kit is made from high - quality materials. The braided hose is durable and resistant to heat and pressure, ensuring long - lasting performance. The AN O - ring fittings provide a secure and leak - free connection. For 2003 and later models, the billet hose brackets are precision - engineered for a perfect fit and excellent durability. All components are designed to withstand the demands of the Cummins engine's cooling system.

Does this coolant bypass kit come with a warranty?

Yes, our coolant bypass kit comes with a 1 - year warranty. This warranty covers any defects in materials or workmanship. If you encounter any issues with the kit during the warranty period, simply contact our customer service team, and we'll take care of it, whether it's a replacement part or a full refund.

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