Coolant Hose Connection Diagram

Fig 1: Identifying Coolant Hose Connection Diagram

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

Reservoir
- With cap
- Pressure relief valve inside cap, checking, refer to COOLING SYSTEM, CHECKING FOR LEAKS .
Intake Manifold
Throttle Valve Control Module -J338-
Coolant Distribution Housing
Heater Core
- Replace the coolant after replacing the heater core.
Coolant Pipe
Bypass Thermostat
- Only for vehicles with an automatic transmission
- Overview, refer to Figure.
- Checking, refer to Figure.
Transmission Fluid Cooler
- Only for vehicles with an automatic transmission
Coolant Hose Connections at Top of Radiator
Coolant Hose Connection at Bottom of Radiator
Radiator
- Replace the coolant after replacing the heater core.
- Removing and installing, refer to RADIATOR, REMOVING AND INSTALLING .
Engine Oil Cooler
Preheater
- Only on vehicles with an engine preheater
Coolant Pump and Coolant Thermostat
- Coolant pump, removing and installing, refer to COOLANT PUMP, REMOVING AND INSTALLING .
- Coolant thermostat, removing and installing, refer to COOLANT THERMOSTAT, REMOVING AND INSTALLING .
- Checking coolant regulator -item 22-.
Cylinder Head/Cylinder Block
- Replace the coolant after replacing the heater core.