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3.5L Engine

WARNING: This page is about a different car, the 2006 Dodge Magnum, 2006 Dodge Charger, and 2006 Chrysler 300. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Heater Supply Tube - 3.5L Engine
GC0014707Courtesy of DAIMLERCHRYSLER CORP.
1 - COOLANT TEMPERATURE SENSOR
2 - O-RING
3 - BOLT
4 - HEATER SUPPLY TUBE
5 - BOLT
WARNING: Do not remove pressure cap with system hot and under pressure because serious burns from coolant can occur.
  1. Drain cooling system (Refer to COOLING - STANDARD PROCEDURE) .
  2. Remove upper and lower intake manifold (Refer to ENGINE/MANIFOLDS/INTAKE MANIFOLD - UPPER - REMOVAL) and (Refer to ENGINE/MANIFOLDS/INTAKE MANIFOLD - LOWER - REMOVAL) .
  3. Position lower intake manifold upside down on bench and remove the tube retaining bolt (5).
  4. Remove heater supply tube (4) from manifold and discard O-ring (2).