Fleece Performance Coolant Bypass Kit for 2013-2018 RAM 6.7L Cummins – Enhance Cooling System Reliability

The Fleece Performance coolant bypass for the 2013-2018 RAM with 6.7L Cummins seamlessly integrates with your truck for an OE fit-and-finish. Features Increased Coolant Flow, Decreased Coolant Temperatures The rear cylinders on the 6.7L Cummins suffer from a lack of coolant flow, and therefore, experience the highest coolant temperatures. This can cause excessive pressure to build in the cooling system, especially the rear of the block and blow out freeze plugs externally, or the smaller diameter plugs under the valve cover, leading to a failure. Our coolant bypass kit adds a secondary thermostat, that unlike other brands, works based on temperature instead of excessive pressure. This solves the problem before pressure becomes an issue by ensuring consistent temperatures across all six cylinders. Benefits Lowers coolant temperature at the rear cylinders Ensures consistent temperatures across all cylinders Prevents damaging coolant pressure build up Complete kit comes with braided hose and AN O-ring fittings to ensure a leak-free installation. Why do I need aFleece Coolant Bypass? One of the biggest issues on the 6.7L Cummins is the coolant flow problem to the rear cylinders. This can cause catastrophic failure or blow outs of the freeze plugs in an over-temperature / over-pressure condition. The Fleece Coolant Bypass is one of the most important additions you make to improve the reliability and longevity of the Cummins platform. Kit Includes: Rear coolant bypass thermostat housing Front coolant bypass thermostat housing New EGR cross-over tube gaskets Black braided nylon coolant bypass hose with protective high temperature sleeve and AN fittings Mounting hardware Recommended Cross Sell Skus - FPE-351-1317/FPE-34562

• Complete kit comes with braided hose and AN O-ring fittings to ensure a leak-free installation
• Ensures consistent temperatures across all cylinders
• Lowers coolant temperature at the rear cylinders
• Prevents damaging coolant pressure build up

The Fleece Performance Coolant Bypass Kit for the 2013-2018 RAM with 6.7L Cummins engine is designed to address coolant flow issues that can lead to overheating and component failure. This kit seamlessly integrates with your truck’s cooling system, providing an OE fit-and-finish that ensures reliable performance. The primary function of this bypass kit is to improve coolant circulation specifically to the rear cylinders, which are prone to higher temperatures and reduced coolant flow. By adding a secondary thermostat that operates based on temperature rather than pressure, it maintains consistent temperatures across all cylinders, thus preventing excessive pressure buildup that can cause freeze plug blowouts or engine damage. The inclusion of braided nylon hoses with protective high-temperature sleeves and AN fittings guarantees a leak-free installation, making this an essential upgrade for durability and performance. Proper coolant management is critical for preventing catastrophic engine failure, especially in high-demand conditions, and this kit offers a proven solution to those persistent flow issues. Installing the Fleece Performance coolant bypass kit not only lowers the temperature at the rear cylinders but also ensures a balanced cooling system, which enhances overall engine longevity. The complete kit comes with all necessary mounting hardware, gaskets, hoses, and fittings, simplifying the installation process and providing a long-term upgrade for your Cummins-powered truck. Whether you're aiming to prevent costly repairs or improve your vehicle’s reliability, this high-quality bypass kit is a vital addition for any serious RAM 6.7L Cummins owner seeking optimal cooling system performance and peace of mind on the road.

Features:

• Enhanced coolant flow to rear cylinders: Ensures balanced temperature distribution across all engine cylinders

• Temperature-based secondary thermostat: Operates independently to prevent over-temperature conditions

• Leak-free braided nylon hoses: Comes with protective high-temperature sleeves and AN fittings for secure connections

• Complete installation kit: Includes all necessary gaskets, mounting hardware, hoses, and fittings for straightforward setup

• Prevents coolant pressure buildup: Reduces risk of freeze plug blowouts and engine damage

Air Freight Prohibited: false
Not Carb Approved: false
Carb Eo Number: D-834-7
Ltl Freight Required: false
Prop 65: Y
Part Type: automotive
Epa: Compliant
Carb Acknowledgement Required: false
Regular Stock: t
Units Per Sku: 1