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How to change engine thermostat on BMW 3 Coupe (E36) – replacement guide
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Recommended replacement interval for the part category Thermostat : 50000 km
Important!
This replacement procedure can be used for:
BMW 3 Coupe (E36) 323i, BMW 3 Coupe (E36) 328 i, BMW 3 Coupe (E36) 325i, BMW 3 Coupe (E36) 320i, BMW 3 Coupe (E36) 318is … View more
The steps may slightly vary depending on the car design.
BMW 3 Coupe (E36) 323i, BMW 3 Coupe (E36) 328 i, BMW 3 Coupe (E36) 325i, BMW 3 Coupe (E36) 320i, BMW 3 Coupe (E36) 318is … 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
All the parts you need to replace – Thermostat for 3 Coupe (E36) and other BMW models
Alternative products

All-purpose cleaning spray
Sealant
Torque wrench
Drive socket # 7
Drive socket # 10
Drive socket # 13
Ratchet wrench
Clip removal tool
Seal scraper
Flat screwdriver
Funnel
Fluid container
Fender cover
Replacement: engine thermostat – BMW 3 Coupe (E36). Tip from AUTODOC:
- Check the condition of the coolant every time you replace the thermostat. Change the coolant if necessary.
- Please note: all work on the car – BMW 3 Coupe (E36) – should be done with the engine switched off.
Carry out replacement in the following order:
- Step 1Open the hood.Step 2Use a fender protection cover to prevent damaging paintwork and plastic parts of the car.Step 3Remove the fasteners of the air duct housing. Use a clip removal tool.Step 4
Remove the air distribution housing assembly. - Step 5
Unscrew the coolant reservoir cap. - Step 6
Prepare a container for fluids. - Step 7
Open the coolant drain tap. - Step 8
Drain the coolant from the engine.Replacement: engine thermostat – BMW 3 Coupe (E36). AUTODOC experts recommend: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 9
Close the coolant drain tap. - Step 10
Loosen the clamps of the coolant hoses. Use a drive socket #7. Use a ratchet wrench. - Step 11
Detach the coolant hose. - Step 12
Loosen the coolant hose clamp. Use a drive socket #7. Use a ratchet wrench. - Step 13
Detach the coolant hose. - Step 14
Detach the coolant pipe bracket. Use a drive socket #13. Use a ratchet wrench. - Step 15
Unscrew the thermostat housing fasteners. Use a drive socket #10. Use a ratchet wrench. - Step 16
Clean the thermostat housing fasteners. Use all-purpose cleaning spray. - Step 17
Unscrew the thermostat housing fasteners. Use a drive socket #10. Use a ratchet wrench. - Step 18
Remove the thermostat housing.AUTODOC recommends:Replacement: engine thermostat – BMW 3 Coupe (E36). To avoid damaging the part when removing it, do not use excessive force.Caution! Coolant may leak out of the coolant lines and thermostat housing. - Step 19
Remove the thermostat. - Step 20
Clean the thermostat housing mounting seat. Use a flat screwdriver. Use a seal scraper. Use all-purpose cleaning spray. - Step 21
Install a new thermostat. - Step 22
Treat the thermostat housing mounting seat. Use a sealant. - Step 23
Install the new thermostat housing.AUTODOC recommends:Replacement: engine thermostat – BMW 3 Coupe (E36). Do not use excessive force during installation. This may damage the part. - Step 24
Tighten the thermostat housing fasteners. Use a drive socket #10. Use a torque wrench. Tighten it to 7 nm torque. - Step 25
Attach the coolant pipe bracket. Use a drive socket #13. Use a torque wrench. Tighten it to 11 nm torque.
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