Fleece Performance Replacement Thermostat Housing
2019–2024 Ram 2500/3500 6.7L Diesel
Part #: FPE-CUMM-TH-19
Overview
The Fleece Performance Replacement Thermostat Housing with Auxiliary Port is engineered as a direct replacement for the thermostat housing on 2019 to 2024 Ram 2500 and 3500 trucks equipped with the 6.7L Cummins diesel engine. Designed for enthusiasts and professional technicians alike, this component offers enhanced flexibility for coolant system customization. The integrated auxiliary port allows for additional coolant routing options, making it ideal for those upgrading or modifying their cooling systems to improve engine performance and reliability.
This thermostat housing is a perfect fit for vehicles requiring a reliable replacement part that maintains OEM specifications while providing added functionality. It is also compatible as a direct replacement for the thermostat elbow included in Fleece Performance’s coolant bypass kits, ensuring seamless integration into existing setups.
Key Features
Designed with precision and durability in mind, the Fleece Performance thermostat housing offers the following key features:
- Direct replacement for 2019–2024 Ram 6.7L Cummins thermostat housing (OEM part #5401899)
- Integrated auxiliary port threaded to accept a -10AN (7/8"-14) fitting for custom coolant routing
- Includes a port plug (FPE-SP-7814) for sealing the auxiliary port when not in use
- Compatible with Fleece Performance coolant bypass kits (FPE-CLNTBYPS-CUMMINS-19)
- Maintains OEM fitment and sealing for hassle-free installation
- Allows for enhanced cooling system modifications without compromising reliability
- Constructed to withstand high temperatures and pressures typical of diesel engine cooling systems
Construction & Design
The thermostat housing is crafted from high-quality materials engineered to endure the demanding environment of diesel engine cooling systems. Its robust construction ensures resistance to corrosion, thermal cycling, and mechanical stress. The precision-machined auxiliary port is threaded to industry-standard -10AN specifications, providing a secure and leak-free connection for aftermarket coolant fittings and hoses. This thoughtful design enables users to expand or reroute their coolant flow with confidence, supporting enhanced cooling strategies for heavy-duty applications.
Installation & Fitment
Installation is straightforward, as this thermostat housing is a direct OEM replacement designed specifically for 2019–2024 Ram 2500 and 3500 models with the 6.7L Cummins diesel engine. No modifications are necessary, and it fits seamlessly in place of the factory thermostat housing. The included port plug allows you to seal the auxiliary port if additional coolant routing is not required, ensuring a clean and reliable installation. This part is ideal for both routine maintenance and performance upgrades involving coolant system customization.
What's Included
- Fleece Performance replacement thermostat housing with auxiliary port
- Auxiliary port plug (FPE-SP-7814)
Ideal For
This thermostat housing is ideal for Ram 2500 and 3500 owners who want to maintain OEM reliability while adding flexibility to their cooling system. It is especially suited for diesel performance enthusiasts, fleet operators, and technicians who require a dependable replacement part that supports custom coolant routing for enhanced engine cooling and thermal management.
Fleece Performance Engineering is a diesel performance manufacturer known for innovative upgrades and reliability-focused solutions for Cummins, Duramax, and Power Stroke platforms. From turbo and fuel system components to cooling and electrical repair solutions, Fleece parts are built for owners who demand stronger performance without compromising dependability.
Fleece Performance Replacement Thermostat Housing Aux Port: Ram 2500/3500 2019-2024 6.7L Diesel
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FPE-CUMM-TH-19 Fleece Performance 19-24 Ram 2500/3500 Replacement Thermostat Housing Aux Port. This direct replacement thermostat housing is designed for 2019-2024 Ram 2500 and 3500 with 6.7L Cummins engines. Featuring a threaded auxiliary port for a -10AN fitting, it allows customizable coolant routing to optimize engine cooling. Includes a port plug for versatility and fits OEM part number 5401899. Ideal for enhancing cooling system performance and compatibility with Fleece coolant bypass kits. Durable construction ensures reliable operation under demanding conditions.
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Fleece Performance Replacement Thermostat Housing
2019–2024 Ram 2500/3500 6.7L Diesel
Part #: FPE-CUMM-TH-19
Overview
The Fleece Performance Replacement Thermostat Housing with Auxiliary Port is engineered as a direct replacement for the thermostat housing on 2019 to 2024 Ram 2500 and 3500 trucks equipped with the 6.7L Cummins diesel engine. Designed for enthusiasts and professional technicians alike, this component offers enhanced flexibility for coolant system customization. The integrated auxiliary port allows for additional coolant routing options, making it ideal for those upgrading or modifying their cooling systems to improve engine performance and reliability.
This thermostat housing is a perfect fit for vehicles requiring a reliable replacement part that maintains OEM specifications while providing added functionality. It is also compatible as a direct replacement for the thermostat elbow included in Fleece Performance’s coolant bypass kits, ensuring seamless integration into existing setups.
Key Features
Designed with precision and durability in mind, the Fleece Performance thermostat housing offers the following key features:
- Direct replacement for 2019–2024 Ram 6.7L Cummins thermostat housing (OEM part #5401899)
- Integrated auxiliary port threaded to accept a -10AN (7/8"-14) fitting for custom coolant routing
- Includes a port plug (FPE-SP-7814) for sealing the auxiliary port when not in use
- Compatible with Fleece Performance coolant bypass kits (FPE-CLNTBYPS-CUMMINS-19)
- Maintains OEM fitment and sealing for hassle-free installation
- Allows for enhanced cooling system modifications without compromising reliability
- Constructed to withstand high temperatures and pressures typical of diesel engine cooling systems
Construction & Design
The thermostat housing is crafted from high-quality materials engineered to endure the demanding environment of diesel engine cooling systems. Its robust construction ensures resistance to corrosion, thermal cycling, and mechanical stress. The precision-machined auxiliary port is threaded to industry-standard -10AN specifications, providing a secure and leak-free connection for aftermarket coolant fittings and hoses. This thoughtful design enables users to expand or reroute their coolant flow with confidence, supporting enhanced cooling strategies for heavy-duty applications.
Installation & Fitment
Installation is straightforward, as this thermostat housing is a direct OEM replacement designed specifically for 2019–2024 Ram 2500 and 3500 models with the 6.7L Cummins diesel engine. No modifications are necessary, and it fits seamlessly in place of the factory thermostat housing. The included port plug allows you to seal the auxiliary port if additional coolant routing is not required, ensuring a clean and reliable installation. This part is ideal for both routine maintenance and performance upgrades involving coolant system customization.
What's Included
- Fleece Performance replacement thermostat housing with auxiliary port
- Auxiliary port plug (FPE-SP-7814)
Ideal For
This thermostat housing is ideal for Ram 2500 and 3500 owners who want to maintain OEM reliability while adding flexibility to their cooling system. It is especially suited for diesel performance enthusiasts, fleet operators, and technicians who require a dependable replacement part that supports custom coolant routing for enhanced engine cooling and thermal management.
Fleece Performance Engineering is a diesel performance manufacturer known for innovative upgrades and reliability-focused solutions for Cummins, Duramax, and Power Stroke platforms. From turbo and fuel system components to cooling and electrical repair solutions, Fleece parts are built for owners who demand stronger performance without compromising dependability.
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YEARMAKEMODELSUBMODEL2019 - 2024Ram25006.7L Diesel2019 - 2024Ram35006.7L Diesel
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Need to return an item? We make it easy. Email us and we'll send you a free return label with instructions on how to return.
Standard shipping
Free Standard Shipping on orders over $300. Select “Free Shipping” at checkout. *Exclusions apply on oversized and freight items.
Free Easy Returns
Need to return an item? We make it easy. Email us and we'll send you a free return label with instructions on how to return.