Look at the pictures to find out if you re looking at the right bolt.
Bmw e46 engine block coolant drain plug washer.
Using either a 1 4 ratchet or a larger pivoting head ratchet slightly loosn the 13mm bolt until you can loosen the rest of it by.
Clean all spills immediately and rinse the area with water.
Engines used in the bmw e46 models hold about 8 5 liters of ethylene glycol water mix while m3 e46 models hold 10 liters.
Get a catch bucket ready.
Use a large funnel.
Once the coolant has stopped dripping reinstall the block drain plug.
Add 3 quarts of bmw antifreeze.
The block drain is a 13mm plug located just below the cylinder two exhaust header.
Just some advice and observations from my coolant flushing experience this weekend.
After the system is flushed plug the engine block coolant plug back in using a new engine block coolant crush washer.
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Replace the block bolt use a fresh 14mmx18mm aluminum washer and gently tighten the blue plastic screw.
Genuine bmw coolant drain plug sealing washer for engine block instock ships today.
Disconnect the temp sensor in the lower radiator hose.
Parts 07 11 9 963 225 07 11 9 963 225 07 11 9 963 225 07119963225.
Place the bucket beneath the drain bolt.
Repeat steps 10 through 12.
Pull out the clip that holds the expansion tank to the mounting plate.
7 3 with the engine block coolant plug open you can flush out your coolant using a hose.
The engine coolant drain plug is located on the passenger side of the engine block just in front of the exhaust manifold.
Remove the drain plug on the passenger side of the engine block and drain the coolant out of the block.
14 let engine cool off and drain all of the coolant this time from the radiator and the expansion tank.
Look on the exhaust side of the engine block before the front axle.
Allow the coolant to drain into the bucket.
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Remove the radiator drain plug and drain the coolant.
Working at the right side of the engine block near the engine mount bracket remove the engine block drain green arrows.
Coolant will drain out a lot.
Start the engine and turn the heater switch on to full hot when you are about beginning to add the 2nd quart of water.
You can feed the lower and upper radiator to flush those areas as well.
