BD Diesel Thermostat Bypass

2019–2024 Ram 2500 / 3500 6.7L Diesel, 2019 Ram 2500 / 3500 6.4L 392

Part #: 1061527

Overview

The BD Diesel Thermostat Bypass is a precision-engineered component designed specifically for heavy-duty Ram trucks equipped with the 6.7L Cummins diesel engine and select 6.4L 392 HEMI models. This bypass kit allows coolant to circulate continuously without the restriction of a traditional thermostat, promoting faster warm-up times and improved engine temperature regulation under demanding conditions.

Ideal for diesel performance enthusiasts and professionals who require enhanced cooling system efficiency, this thermostat bypass helps reduce thermal stress on your engine during high-load or towing scenarios. It is a vital upgrade for those looking to optimize their Ram 2500 or 3500 diesel truck’s reliability and longevity.

Key Features

Engineered with BD Diesel’s commitment to quality and performance, this thermostat bypass offers the following benefits:

• Eliminates thermostat restriction for continuous coolant flow
• Improves engine warm-up consistency and temperature stability
• Reduces risk of overheating during heavy towing or extended idling
• Precision fitment for 2019–2024 Ram 2500 and 3500 6.7L Cummins diesel engines
• Compatible with 2019 Ram 2500 and 3500 6.4L 392 HEMI engines
• Manufactured by BD Diesel, a leader in diesel performance parts since 1989
• Durable construction designed to withstand harsh diesel operating conditions
• Simple installation with no permanent modifications required

Construction & Design

Crafted from high-quality materials, the BD Diesel Thermostat Bypass is built to endure the rigorous demands of diesel truck operation. The design ensures a secure and leak-free fit within the cooling system, maintaining optimal coolant flow without compromising engine integrity. BD Diesel’s in-house engineering and manufacturing expertise guarantee a product that meets strict performance and durability standards.

Installation & Fitment

This thermostat bypass is designed for direct fitment on 2019 through 2024 Ram 2500 and 3500 trucks equipped with the 6.7L Cummins diesel engine, as well as 2019 Ram 2500 and 3500 models with the 6.4L 392 HEMI. Installation is straightforward and typically requires no special tools or modifications, making it accessible for professional installers and experienced DIYers alike. Proper installation ensures reliable operation and optimal cooling system performance.

What's Included

• BD Diesel Thermostat Bypass assembly
• All necessary gaskets and seals for installation
• Installation instructions and technical support information

Ideal For

This thermostat bypass is ideal for Ram diesel truck owners who frequently tow heavy loads, operate in extreme temperatures, or seek to enhance their vehicle’s cooling efficiency. It is also well-suited for performance enthusiasts looking to maintain optimal engine temperatures during demanding driving conditions.

BD Diesel Performance designs and manufactures diesel performance parts aimed at stronger power delivery, improved reliability, and heavy-duty capability. Their lineup spans turbo and fueling upgrades, manifolds, intercoolers, and other supporting components—built for Cummins, Power Stroke, and Duramax owners who want more torque for towing, work, or competition.