How to change fuel filter on MERCEDES-BENZ CLK (C209) – replacement guide
MERCEDES-BENZ CLK (C209) CLK 220 CDI (209.308), MERCEDES-BENZ CLK (C209) CLK 320 CDI (209.320), MERCEDES-BENZ CLK (C209) CLK 220 CDI (209.308) … 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

- Ensure adequate ventilation of the workplace. Fuel vapors are poisonous.
- Please note: all work on the car – MERCEDES-BENZ CLK (C209) – should be done with the engine switched off.
- Step 1
Open the hood.
Step 2Use a fender protection cover to prevent damaging paintwork and plastic parts of the car.
Step 3Unscrew the engine cover fastener. Use Torx T25. Use a ratchet wrench.
Step 4
Unscrew the fasteners of the back section of the engine cover. Use a drive socket #10. Use a ratchet wrench.
- Step 5

Remove the back section of the engine cover.
AUTODOC recommends:Replacement: fuel filter – MERCEDES-BENZ CLK (C209). Do not use excessive force when removing the part as this may damage it.
- Step 6
Remove the engine cover.
AUTODOC recommends:Replacement: fuel filter – MERCEDES-BENZ CLK (C209). To avoid damaging the part when removing it, do not use excessive force.
Step 7
Clean the fuel filter housing and the cover. Use all-purpose cleaning spray.
- Step 8

Loosen the fuel filter mounting. Use HEX No.H5. Use a ratchet wrench.
- Step 9

Loosen the fastening clamps of the fuel filter pipes. Use a drive socket #5.5. Use a drive socket #7. Use a ratchet wrench.
- Step 10

Detach the tubes from the fuel filter. Use round-nose pliers.
Replacement: fuel filter – MERCEDES-BENZ CLK (C209). Tip:Be careful! Fuel may leak from the filter housing and hoses.
- Step 11

Remove the fuel filter.
- Step 12

Install a new fuel filter.
Replacement: fuel filter – MERCEDES-BENZ CLK (C209). Tip from AUTODOC:Make sure that the fuel filter is positioned correctly. Consider the fuel flow direction mark.During installation, take care to prevent dust and dirt from getting into the fuel filter housing.MERCEDES-BENZ CLK (C209) – It's important to only use high-quality filters.
- Step 13

Clean the fuel filter housing and the cover. Use all-purpose cleaning spray.
- Step 14

Attach the pipe to the fuel filter.
- Step 15

Tighten the fastening clamp of the fuel filter pipe. Use a drive socket #5.5. Use a ratchet wrench.
- Step 16

Press the fuel primer pump several times until it gets hard. Use a bulb hand fuel pump.
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