Fleece Performance Thermostat Housing
1998–2007 Dodge Ram 2500 / 3500 5.9L Diesel & 2013–2018 Ram 2500 / 3500 6.7L Diesel
Part #: FPE-CUMM-TH-1318
Overview
The Fleece Performance Thermostat Housing with Auxiliary Port is a precision-engineered replacement part designed specifically for Dodge and Ram trucks equipped with Cummins diesel engines. This housing fits 1998.5 to 2007 Dodge Ram 2500 and 3500 models with the 5.9L Cummins engine, as well as 2013 to 2018 Ram 2500 and 3500 trucks powered by the 6.7L Cummins diesel. It serves as a direct replacement for the factory thermostat housing, ensuring reliable cooling system performance while offering enhanced customization options through its auxiliary port.
Ideal for diesel truck enthusiasts and professionals looking to upgrade or maintain their cooling system, this thermostat housing allows for improved coolant routing flexibility. The integrated auxiliary port accepts a -10AN (7/8"-14) fitting, enabling users to add additional coolant lines or sensors as needed for performance or monitoring purposes.
Key Features
Designed with durability and functionality in mind, the Fleece Performance Thermostat Housing offers several key benefits:
- Direct replacement for factory thermostat housing on 1998.5–2007 5.9L Cummins and 2013–2018 6.7L Cummins Ram trucks
- Threaded auxiliary port accepts -10AN (7/8"-14) fittings for custom coolant routing or sensor installation
- Includes port plug (FPE-SP-7814) for sealing unused auxiliary port
- Compatible with Fleece Performance coolant bypass kits (FPE-CLNTBYPS-CUMM-0712 and FPE-CLNTBYPS-CUMM-1318)
- Direct replacement for Cummins OEM part numbers 5283433 and 3943297
- Precision-machined to ensure proper fit and reliable sealing
- Enhances cooling system versatility without compromising factory fitment
Construction & Design
The thermostat housing is crafted from high-quality materials engineered to withstand the demanding conditions of diesel engine cooling systems. Its robust construction ensures resistance to corrosion, heat, and pressure, providing long-lasting durability. The auxiliary port is precisely threaded to accept standard -10AN fittings, allowing for secure and leak-free connections. This design facilitates easy integration with aftermarket coolant accessories or monitoring devices, enhancing the overall functionality of your truck’s cooling system.
Installation & Fitment
Installation is straightforward as this thermostat housing is a direct OEM replacement for the specified Dodge and Ram Cummins diesel models. It fits seamlessly in place of the original thermostat elbow without requiring modifications. The included port plug allows you to seal the auxiliary port if not in use, maintaining system integrity. This part is compatible with Fleece Performance coolant bypass kits, making it an excellent choice for those upgrading their cooling system for improved performance or reliability.
What's Included
- Fleece Performance Thermostat Housing with Auxiliary Port
- Auxiliary port plug (FPE-SP-7814)
Ideal For
This thermostat housing is perfect for diesel truck owners who want a reliable, direct-fit replacement part with added flexibility for coolant system customization. It is especially suited for those running performance upgrades, custom coolant routing, or monitoring setups on 1998.5–2007 Dodge Ram 5.9L Cummins and 2013–2018 Ram 6.7L Cummins trucks. Whether for daily driving, towing, or off-road use, this component helps maintain optimal engine temperatures and supports enhanced cooling system configurations.
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 Thermostat Housing w/Aux Port: Ram 2500 / 3500 1998.5-2007 5.9L Diesel / 2013-2018 6.7L Diesel
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FPE-CUMM-TH-1318 Fleece Performance 98-07 / 13-18 Ram 2500 / 3500 Thermostat Housing w/Aux Port. Fleece Performance replacement thermostat housing offers a direct fit for 1998.5-2007 5.9L and 2013-2018 6.7L Cummins diesel engines. Featuring a threaded auxiliary port for -10AN fittings, it allows customizable coolant routing for enhanced cooling system flexibility. Includes port plug and replaces OEM parts 5283433 and 3943297. Ideal for coolant bypass kits, this durable housing ensures reliable performance and easy installation for your Ram diesel truck.
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Fleece Performance Thermostat Housing
1998–2007 Dodge Ram 2500 / 3500 5.9L Diesel & 2013–2018 Ram 2500 / 3500 6.7L Diesel
Part #: FPE-CUMM-TH-1318
Overview
The Fleece Performance Thermostat Housing with Auxiliary Port is a precision-engineered replacement part designed specifically for Dodge and Ram trucks equipped with Cummins diesel engines. This housing fits 1998.5 to 2007 Dodge Ram 2500 and 3500 models with the 5.9L Cummins engine, as well as 2013 to 2018 Ram 2500 and 3500 trucks powered by the 6.7L Cummins diesel. It serves as a direct replacement for the factory thermostat housing, ensuring reliable cooling system performance while offering enhanced customization options through its auxiliary port.
Ideal for diesel truck enthusiasts and professionals looking to upgrade or maintain their cooling system, this thermostat housing allows for improved coolant routing flexibility. The integrated auxiliary port accepts a -10AN (7/8"-14) fitting, enabling users to add additional coolant lines or sensors as needed for performance or monitoring purposes.
Key Features
Designed with durability and functionality in mind, the Fleece Performance Thermostat Housing offers several key benefits:
- Direct replacement for factory thermostat housing on 1998.5–2007 5.9L Cummins and 2013–2018 6.7L Cummins Ram trucks
- Threaded auxiliary port accepts -10AN (7/8"-14) fittings for custom coolant routing or sensor installation
- Includes port plug (FPE-SP-7814) for sealing unused auxiliary port
- Compatible with Fleece Performance coolant bypass kits (FPE-CLNTBYPS-CUMM-0712 and FPE-CLNTBYPS-CUMM-1318)
- Direct replacement for Cummins OEM part numbers 5283433 and 3943297
- Precision-machined to ensure proper fit and reliable sealing
- Enhances cooling system versatility without compromising factory fitment
Construction & Design
The thermostat housing is crafted from high-quality materials engineered to withstand the demanding conditions of diesel engine cooling systems. Its robust construction ensures resistance to corrosion, heat, and pressure, providing long-lasting durability. The auxiliary port is precisely threaded to accept standard -10AN fittings, allowing for secure and leak-free connections. This design facilitates easy integration with aftermarket coolant accessories or monitoring devices, enhancing the overall functionality of your truck’s cooling system.
Installation & Fitment
Installation is straightforward as this thermostat housing is a direct OEM replacement for the specified Dodge and Ram Cummins diesel models. It fits seamlessly in place of the original thermostat elbow without requiring modifications. The included port plug allows you to seal the auxiliary port if not in use, maintaining system integrity. This part is compatible with Fleece Performance coolant bypass kits, making it an excellent choice for those upgrading their cooling system for improved performance or reliability.
What's Included
- Fleece Performance Thermostat Housing with Auxiliary Port
- Auxiliary port plug (FPE-SP-7814)
Ideal For
This thermostat housing is perfect for diesel truck owners who want a reliable, direct-fit replacement part with added flexibility for coolant system customization. It is especially suited for those running performance upgrades, custom coolant routing, or monitoring setups on 1998.5–2007 Dodge Ram 5.9L Cummins and 2013–2018 Ram 6.7L Cummins trucks. Whether for daily driving, towing, or off-road use, this component helps maintain optimal engine temperatures and supports enhanced cooling system configurations.
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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YEARMAKEMODELSUBMODEL1998 - 2007DodgeRam 25005.9L Diesel1998 - 2007DodgeRam 35005.9L Diesel2013 - 2018Ram25006.7L Diesel2013 - 2018Ram35006.7L Diesel
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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.