Fleece Performance Cummins Cylinder Head Dowels Fleece Performance Engine Coolant Bypass|Heating & Cooling The coolant that flows through

The coolant that flows through the tube provides heat to the heater core for the in-cab AC/Heat system

3 quarts of fluid

The kit includes 3 new square cut O-rings and 1 new standard O-ring as well as 2 new O-rings for each of AN fittings

increased horsepower and torque

It also features a port for the factory WIF (water in fuel) sensor

Fleece Performance Cummins Cylinder Head Dowels Fleece Performance Engine Coolant Bypass|Heating & Cooling The coolant that flows throughReplacement cylinder head dowels for use between the engine block and cylinder head. Kit includes 2 dowels. Application Notes: Replaces Cummins part number 3902343. Fits 1989 2023 Cummins 12 valve and 5. 9 6. 7L 24 valve engines.