BMW 11121340903 Left Rocker Cover

( Manufacturer Part Number: 11121340903 ), ( Modified Item: No ), ( Colour: Silver ), ( Machine Type: Street Motorcycle ), ( Type: Cylinder Head Cover ), ( Reference Oe/oem Number: 1112134090300 ), ( Intended Use: Replacement Part )

Review BMW Left Rocker Cover Silver

The BMW 11121340903 Left Rocker Cover is a crucial component of the BMW engine's cooling system. This rocker cover is specifically designed for BMW models and is engineered to provide optimal engine performance and durability.

The left rocker cover is a flat, horizontal component that sits on the left side of the engine, covering the rocker arms and their associated hydraulic lifters. Its primary function is to seal the area between the cylinder heads and the rocker arms, preventing coolant from leaking out and keeping the engine compartment clean.

The BMW 11121340903 Left Rocker Cover is made of high-quality materials, ensuring a long service life. It features a smooth, polished finish that not only looks great but also helps to reduce engine noise and friction. The cover is also designed to fit perfectly onto the engine, ensuring a secure seal and preventing any leaks.

The BMW 11121340903 Left Rocker Cover comes with all necessary hardware for installation, including gaskets and seals. The installation process is straightforward, and BMW provides clear instructions in the owner's manual to guide you through the process.

In summary, the BMW 11121340903 Left Rocker Cover is an essential engine component that plays a crucial role in maintaining proper cooling and sealing functions. Its high-quality materials, smooth finish, and easy installation make it an excellent choice for BMW owners looking to keep their engines running at peak performance.

Buying a BMW 1 Series (11121340903) left rocker cover involves considering both its advantages and disadvantages.

1. OEM Part: This rocker cover is an original equipment manufacturer (OEM) part, which means it is designed and engineered by BMW specifically for your BMW 1 Series. It ensures a proper fit and function.

2. Quality: BMW is renowned for its high-quality components. This rocker cover is no exception; it is made from durable materials that can withstand the rigors of regular use.

3. Performance: A new rocker cover can improve engine performance by sealing the area around the rocker arms effectively. This can lead to better fuel efficiency and smoother engine operation.

4. Reliability: A worn-out or damaged rocker cover can cause oil leaks, which can lead to engine damage. Replacing it with a new one can prevent these issues and ensure the reliability of your vehicle.

1. Cost: BMW parts, including the 1 Series left rocker cover, can be expensive. You should consider the cost of the part, as well as any labor costs if you plan to have it installed by a mechanic.

2. Availability: Depending on your location and the availability of BMW dealerships or parts distributors, it might take some time to get your hands on this specific part.

3. Installation: Installing the left rocker cover yourself can be a challenging task, especially if you are not mechanically inclined. It may require specialized tools and knowledge.

The BMW 1 Series (11121340903) left rocker cover is an essential component of your vehicle's engine. While it may come with a higher cost and potential installation challenges, the advantages of a new OEM part, including improved performance, reliability, and quality, make it a worthwhile investment for BMW 1 Series owners.

If you are experiencing issues with your BMW 1 Series' engine performance or notice signs of an oil leak, consider investing in a new OEM left rocker cover. It may be a more expensive option upfront, but the benefits of improved performance, reliability, and engine protection make it a sound investment for your BMW 1 Series. If you are unsure about the installation process, consult a professional mechanic to ensure a proper installation.

Details:

The BMW left rocker cover silver 202903 is a replacement part designed for street motorcycles. This part is a suitable OEM replacement and does have slight cosmetic blemish as pictured. This cylinder head cover, manufactured by BMW, is an OEM part with the reference number 00.

part #: 11121340903 prices

• $75.00-$149.97

specifications cylindermotorcycleiz:

• for makes: Bmw
• mpn: 11121340903
• modified item: No
• colour: Silver
• machine type: Street Motorcycle
• type: Cylinder Head Cover
• reference oe/oem number: 1112134090300
• intended use: Replacement Part

returns cylindermotorcycleiz:

• time: 30 Days
• policy: Returns Accepted
• paid by: Seller

offer cylindermotorcycleiz:

• sold: 0
• started: December 9, 2025
• options: Ship-to-home
• quantity: 1
• availability: In Stock
• best offers: True

payments cylindermotorcycleiz:

• wallet: Paypal
• credit card: Discover
• other

seller cylindermotorcycleiz:

• city: Kansas City, Missouri
• rating: 100.0%
• # reviews: 595

shipping cylindermotorcycleiz:

• transit: 4-10 Days
• type: Fixed
• class: Standard
• cost: $25.00
• carrier: USPS
• service: USPS Ground Advantage

general cylindermotorcycleiz:

• Motorcycle Scooter Parts Accessories > Engines Engine Parts > Cylinder Heads
• condition: Used

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