OEM BMW Engine Components Online

12517856771 - : Engine Harness for BMW Image

Engine Harness

4.4L, with M5, ignition module. With M8, injection valve, cyl. 1-4.
$186.84
MSRP $239.91
Save $53.07
22.1% Off
22117935147 - : Engine Support for BMW Image

Engine Support

2.0L turbo, with awd. 528xi. Left.
$136.15
MSRP $186.10
Save $49.95
26.8% Off
12515A31E50 - : Engine Harness for BMW Image

Engine Harness

4.4L, without M8, trans module.
Backordered
11258092931 - : Engine Piston for BMW Image

Engine Piston

From 01/2018. Incl.Piston Pin and Piston Ring Set. M760i xDrive. 650i. (0). To 04/19. M5.
Backordered
12518617703 - : Engine Harness for BMW Image

Engine Harness

Without m model, servomotor.
$129.74
MSRP $166.59
Save $36.85
22.1% Off
22119894881 - : Engine Support for BMW Image

Engine Support

Rwd. 740i. Left.
$142.96
MSRP $195.40
Save $52.44
26.8% Off
11257516061 - : Engine Piston for BMW Image

Engine Piston

325i, ci, xi. With sulev. Incl.Piston Pin and Piston Rings. Grade-0.
Backordered
11148676204 - : Engine Cover for BMW Image

Engine Cover

2.0L phev, with hybrid. 2.0L, 530e. 2.0L, 2020-23, with xdrive 30ex. 2.0L, 2020-24, with xdrive 30ex.
$262.55
MSRP $340.00
Save $77.45
22.8% Off
12538636069 - : Engine Harness for BMW Image

Engine Harness

2.0L, 2017-20, engine/trans, auto trans. 2.0L gas, 2.0L hybrid, 2017-19, transmission, 2.0L gas, auto trans. 2.0L, engine/transmission.
$305.52
MSRP $395.65
Save $90.13
22.8% Off
12518678962 - : Engine Harness for BMW Image

Engine Harness

228i, ignition system. M235i, ignition system. With m model, ignition module.
$129.74
MSRP $166.59
Save $36.85
22.1% Off

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Understanding BMW Engine Components and Their Role

Every BMW 3 Series and BMW X5 relies on a finely tuned set of engine components to deliver confident power and precise control. Each drive feels smooth because every piece, from the pistons to the valves, works in perfect rhythm. These parts define BMW’s engineering excellence and keep performance consistent over time. At BMW Auto Parts Online, we take pride in helping owners maintain that quality by providing genuine BMW replacements that meet exact factory specifications.

How BMW Engine Components Work

Engine components form the backbone of your BMW’s performance system. Parts such as the camshaft, crankshaft, and connecting rods collaborate to turn fuel and air into usable motion. This coordination is what keeps acceleration sharp and power delivery reliable. Genuine BMW components ensure these functions remain precise, while aftermarket parts often introduce inconsistencies that can reduce performance and fuel efficiency.

Why Engine Components Break Down

Continuous heat, vibration, and friction gradually wear down even the strongest materials. When maintenance intervals are skipped or lower-grade parts are installed, these stresses multiply. Small gaps or improper fits in non-genuine parts can cause premature wear and imbalance. Replacing damaged or aging components with genuine BMW parts, along with a properly matched spark plug, keeps the engine clean, efficient, and responsive under all driving conditions.

When Replacement Becomes Necessary

Common signs of worn engine components include rattling noises, rough idling, and poor fuel economy. These symptoms indicate internal wear that requires prompt attention. Most drivers notice these issues after extended mileage or heavy use. At BMW Auto Parts Online, we recommend timely replacement using authentic BMW components to preserve the performance and reliability your vehicle was designed to deliver.