Enhanced block cooling adapter in billet aluminum, for nearly all late-series Audi 5-cylinder 20V engine blocks, 25 mm diameter.

Adapter that mounts directly into the original VW/Audi coolant housing that holds the temperature sensor, featuring a -6AN fitting for easily routing coolant to a turbo or any other component.

Compact cooler for power steering, transmission, fuel, or engine oil, 9x3" size, installs anywhere, replaces the original part or supplements existing cooling. 5/16"/8mm fittings, hose, clamps, and mounting straps included.

High-quality reinforced silicone hose, allowing simple removal of the original failure-prone engine after-run coolant pump on Audi S4 B5 and A6/Allroad C5 2.7T. New hose clamps included.

Freeze plug, engine block coolant port adapter, for turbo applications.

High-performance silicone heater core hose kit replacing OEM part nos. 8D0 819 731 AQ and 8D0 819 737 T, discontinued by Audi. For Audi B5 S4 2.7T, also fits C5 A6 2.7T with adjustment of the supply hose. Installation difficulty: moderate.

Reinforced high-quality silicone radiator hose kit, replacing worn and cracked original radiator hoses, for Audi 200 20V 3B engine. Installation difficulty: moderate.

Complete kit of 10 silicone coolant hoses, replacing the original hoses, for Audi UrS4/UrS6 C4 with AAN engine.

Silicone heater hose kit for Audi 10V vehicles, fits original Audi 80/90 type 89 without control valve installed in the heater hose.

Silicone heater hose kit, 3 pieces, for Audi Coupe Quattro, S2 and RS2 equipped with a heater valve installed in the heater core return block.

Water hose for APR MQB intake kit

Coolant hose connection flange for N54 engines twin-turbo