The Fleece Performance 98.5-02 VP Coolant Bypass Kit with Stainless Steel Braided Line is a high-quality cooling system upgrade designed specifically for 5.9 and 6.7L Cummins engines. This kit enhances coolant flow and reduces operating temperatures by adding a secondary thermostat that functions based on temperature rather than pressure. Constructed with durable stainless steel braided lines and AN O-ring fittings, it ensures a leak-free installation. The kit effectively lowers coolant temperatures at the rear cylinders, promotes uniform temperature distribution across all cylinders, and prevents excessive pressure buildup that could lead to freeze plug blowouts or failures. Its design addresses common cooling issues in Cummins engines, improving reliability and longevity under demanding conditions.
This coolant bypass kit is suitable for 98.5-02 model years of the 5.9/6.7L Cummins engines. It is a direct upgrade for vehicles experiencing coolant flow problems to the rear cylinders, which can cause catastrophic failures if left unaddressed. The complete kit includes braided hoses, fittings, and, for MY 2003+ models, billet hose brackets for secure mounting. It is ideal for use in daily driving, towing, or performance applications where maintaining consistent engine temperatures is critical. Notably, the 2003-2007 automatic transmission versions will eliminate the factory transmission fluid heat exchanger, making this an essential component for improving engine cooling and overall durability.
