This aftermarket replacement coolant pipe kit is intended for Detroit Diesel Series 60 S60 14L engine applications and cross-references part numbers 23505899 and 23506325. A coolant pipe helps route coolant through the engine cooling system, while the intake extension tube and hose clamp support the related connection and service arrangement. Key Features & Performance. Supports the normal coolant-routing function within an engine cooling system. References part numbers 23505899 and 23506325 for comparison. Kit title identifies an intake extension tube and hose clamp. Intended for servicing or replacing the corresponding coolant pipe components. For Detroit Diesel Series 60 S60 14L engine applications. Replacing a worn, damaged, or leaking coolant pipe component. Routine maintenance of the cooling system on the listed engine application. Servicing coolant routing connections associated with the listed kit components. Product Type: Coolant pipe kit. Part Number(s): 23505899, 23506325. Engine Application(s): Detroit Diesel Series 60 S60 14L. Named Components: Intake extension tube, hose clamp. Q: What does a coolant pipe kit do? A: A coolant pipe helps route coolant through an engine cooling system, and the associated tube and clamp support the relevant connection and service work. Q: How should fitment be verified? This is an aftermarket replacement part and is not represented as genuine or original equipment. Product appearance and specifications may vary slightly by batch. Compatibility may vary by serial number, model year, or existing part number.