BMW 320i Engine Parts

The turbocharged four-cylinder engine in your BMW 320i is made up of many parts, all of which work together to produce the power your compact executive car needs to move on down the road.

The core of it all is the engine block. Other parts connect to it, and it's home to the combustion that creates the power that moves your wheels. Engine pistons pump in order to pressurize the air-and-fuel mixture inside the engine block, while a cylinder head seals the gases inside. The spark-plugs that kindle ignition connect to that cylinder head. The camshaft syncs with the crankshaft to open and close the valves as needed, with the crankshaft using the pistons' pumping motion to produce the rotary motion that moves your drivetrain. An oil pan holds the motor oil that lubricates your engine, while rings, gears, gaskets, and bearings keep everything connected.

How to Spot Faulty Engine Parts

Harsh driving conditions and time can take a toll on even the best engine parts, though. Signs of failure include:

Repeated engine stalls

Problems accelerating

Rough engine idling

Worsening fuel efficiency

Excessive exhaust smoke

The "Check Engine" dash light comes on

Save Up to 30% When You Buy Genuine BMW Engine Parts From Our Online Parts Store

The average cost to replace an engine in your BMW 320i is between $5,000 and $7,000. With that kind of money at stake, it's a smart choice to replace a faulty part when you first notice signs of trouble, rather than risking complete engine failure. Our online BMW parts store sells the parts that BMW made specifically for your car, so you can depend on them to fit properly and perform as they should. Even better, we sell those parts at a deep discount to the MSRP -- so you save money and time by shopping with us. Buy today and we'll get your order shipped right out. Need your parts in a hurry? Contact us and ask about our overnight shipping options.