OEM BMW Cylinder Heads Online

2003 BMW M3

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Understanding BMW Cylinder Heads

Cylinder heads are essential for engine performance and efficiency. They house the intake and exhaust valves, controlling airflow into and out of the combustion chamber. A well-maintained cylinder head ensures smooth engine operation and prevents costly repairs. At BMW Auto Parts Online, we supply genuine BMW cylinder heads that maintain factory precision.

What cylinder heads do

The cylinder head sits atop the engine block and seals the combustion chamber. It coordinates the flow of air and fuel and supports components like the camshaft and spark plugs. A related part such as the cylinder head gasket works alongside it to maintain proper sealing and prevent leaks. Proper function is crucial for power output and fuel efficiency.

Why cylinder heads fail

Cylinder heads can warp or crack due to overheating or poor maintenance. Corrosion and stress from high engine temperatures may lead to leaks or valve issues. Failing heads can cause reduced performance, oil or coolant leaks, and misfires. Using lower-quality aftermarket parts increases the risk of premature failure and uneven performance.

When to replace cylinder heads

Replacement is necessary if the head shows cracks, warping, or persistent leaks. Genuine BMW parts offer exact fit, durability, and reliability that aftermarket options cannot match. Popular models like the BMW 3 Series and BMW X5 benefit from OEM cylinder head replacements. Timely replacement ensures the engine runs smoothly and maintains long-term reliability.

We recommend using genuine BMW parts from BMW Auto Parts Online to preserve engine integrity. OEM cylinder heads provide superior performance, precise fit, and long-lasting durability. Choosing authentic components protects your investment and maintains the driving experience. Keeping engines in top condition starts with reliable, original BMW parts.

Valve Cover Oil Seal

Part Number: 11-12-7-831-271
BMW BMW
Other Names: Inner Gasket, Seal, Spark Plug Tube Seal, Profile Gasket C118523
Description: Z4. M3. 3.2l.
MSRP $41.99
$36.21

Fender Bolt

Part Number: 07-11-9-901-515
BMW BMW
Positions: Rear
Other Names: Hex Head Screw With Washer C071000
Description: Rear.
MSRP $4.30
$3.76

Coolant Temp Sensor

Part Number: 13-62-1-433-076
BMW BMW
Other Names: Engine Coolant Temperature Sensor, Temp Sensor, Temp Switch, Oil Temp Sending Unit, Temp Sending Unit, Cylinder Head Temp Sensor,...
Replaces: 23-01-7-838-935
MSRP $66.05
$47.89

Fog Lamp Assembly Screw

Part Number: 07-11-9-907-948
BMW BMW
Other Names: Fillister Head Self Tapping C071000
Replaces: 07-11-9-907-947, 07-11-9-907-984
Description: 2000-03.
MSRP $0.39
$0.34

Intermediate Pipe O-Ring

Part Number: 18-10-1-405-737
BMW BMW
Positions: Outer
Other Names: Gasket Ring Asbesto Free C188520
Replaces: 18-11-1-723-378
Description: 2001-06 3.2l M3, outer.
MSRP $20.28
$18.00

Trim Cover Rear Seal

Part Number: 11-12-7-837-025
BMW BMW
Positions: Rear
Other Names: Trim Cover Seal, Gasket C118523
Replaces: 11-12-7-831-860
Description: 3.2l, rear.
MSRP $79.75
$65.49

Headliner Support

BMW BMW
Other Names: Support Head Lining Front C519590
Description: Coupe.
MSRP $12.36
$11.28

Weatherstrip

Part Number: 51-32-8-194-721
BMW BMW
Other Names: Gasket Between Door And Entr C518524
MSRP $29.59
$27.00

Transmission Oil Filter

BMW BMW
Other Names: Filter, Pan Gasket, Oil Filter C241020
Description: 1999-00, 2001-04 2wd. 330i, ci. 525i, 530i. Auto trans, 2003-05. Z4. 325i, ci. With sulev.
MSRP $75.79
$61.33

Reservoir

Part Number: 61-67-7-895-577
BMW BMW
Positions: Front
Other Names: Head Lamp Cleaning Device Co C616040
Description: M3.
MSRP $120.51
$96.08

Holder

Part Number: 65-20-6-909-605
BMW BMW
Other Names: Antenna Head Short Rod Ante C652040
Replaces: 65206902690
Description: Convertible.
MSRP $64.15
$54.53

O-Ring

Part Number: 11-42-1-741-000
BMW BMW
Other Names: Engine Oil Filter Gasket, Cover O-Ring, Element O-Ring, Cover Seal, Element Gasket, Oil Filter Housing Gasket, O Ring C118526
Replaces: 11-42-1-266-374
Description: 2.8L. 2000-03. 3.2l. 5.0L, oiling system. 2.5L. 3.0L, 2003-05. 2004-06. 3.0L without turbo, 2004-05.
MSRP $13.14
$12.65

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