Important!

This replacement procedure can be used for:
BMW 3 Saloon (E46) 320d, BMW 3 Saloon (E46) 318 d, BMW 3 Saloon (E46) 320 d … View more

The steps may slightly vary depending on the car design.

This video shows the replacement procedure of a similar car part on another vehicle

Alternative products

Radiator hose

Replacement: сoolant hose – BMW 3 (E46). Tools you need:

                      All-purpose cleaning spray
                    
                      Drive socket # 12
                    
                      HEX bit No.H5
                    
                      Ratchet wrench
                    
                      Flat screwdriver
                    
                      Funnel
                    
                      Fluid container
                    
                      Crow bar
                    
                      Fender cover
                    
                      Wheel chock

Buy tools

Replacement: сoolant hose – BMW 3 (E46). AUTODOC recommends:

Check the cooling circuit for leaks. Replace any worn parts.
All work should be done with the engine stopped.

Replacement: сoolant hose – BMW 3 (E46). Take the following steps:

Step 1

Open the bonnet.

Step 2

Use a fender protection cover to prevent damaging paintwork and plastic parts of the car.

Step 3

Unscrew the fasteners of the air distribution housing assembly. Use a drive socket #12. Use a ratchet wrench.
Step 4

Remove the air distribution housing assembly.
Step 5

Secure the wheels with chocks.

Step 6

Lift the car using a jack or place it over an inspection pit.

Step 7

Unscrew the engine cover fastener. Use HEX No.H5. Use a ratchet wrench.
Step 8

Remove the engine cover.

AUTODOC recommends:
Do not apply excessive force when removing the part. Otherwise you may damage it.
Step 9

Prepare a container for fluids.
Step 10

Unscrew the coolant drain plug. Use a flat screwdriver.
Step 11

Drain the coolant from the engine.

Replacement: сoolant hose – BMW 3 (E46). Tip:
Caution! The coolant can be very hot.Wear gloves to prevent contact with hot liquid.All work should be done with the engine stopped.Wait until the coolant has completely flowed out of the drain hole.
Step 12

Unscrew the coolant reservoir cap.
Step 13

Remove the coolant hose retainers. Use a crowbar.
Step 14

Detach the coolant hose. Use a crowbar.

Replacement: сoolant hose – BMW 3 (E46). Tip from AUTODOC experts:
Be careful! The coolant may leak.Replacement: сoolant hose – BMW 3 (E46). To avoid damaging the part when removing it, do not use excessive force.
Step 15

Screw in the coolant drain plug. Use a flat screwdriver.
Step 16

Clean the mounting seats of the coolant hose. Use all-purpose cleaning spray.
Step 17

Connect the new coolant hose.
Step 18

Fasten the retainers of the coolant hose.
Step 19

Insert the funnel.
Step 20

Pour coolant in the coolant reservoir.

AUTODOC recommends:
Only use the coolant recommended by the manufacturer.The coolant level should be at the MAX mark.Wait until the air goes out of the system.
Step 21

Unscrew the bleeder screws. Use a flat screwdriver.

Please note!
This is necessary to remove any remaining air from the system.
Step 22

Screw in the bleeder screws. Use a flat screwdriver.
Step 23

Check the coolant level. If necessary, top up to the required level.
Step 24

Screw on the coolant reservoir cap.
Step 25

Install the engine cover and secure it.

AUTODOC recommends:
Replacement: сoolant hose – BMW 3 (E46). To avoid damaging the part during installation, do not use excessive force.
Step 26

Screw in the engine cover fasteners. Use HEX No.H5. Use a ratchet wrench.
Step 27

Reinstall the air distribution housing assembly.
Step 28

Screw in the fasteners of the air distribution housing assembly. Use a drive socket #12. Use a ratchet wrench.

Step 29

Lower the car.

Step 30

Remove the jacks and chocks.

Step 31

Remove the fender protection cover.

Step 32

Close the hood.

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