2012 - 2016 BMW Z4 Upper Engine Cover (OEM)

What to look for when buying this part:

• Material: Ensure the replacement part is made of durable, heat-resistant plastic.
• Fit: Verify the part is specifically designed for your vehicle's year, make, and model.
• Condition: Inspect the part for any visible damage, cracks, or defects.
• Warranty: Check if the part comes with a warranty for peace of mind.

Quality indicators for the available options:

What's typically included with the part:

• The engine cover itself.
• Sometimes includes the rubber seals or gaskets.
• Mounting hardware (bolts, screws) may or may not be included. Check the product description.

Difficulty level and estimated time:

• Difficulty: Easy to Moderate
• Estimated Time: 30 minutes to 1 hour

Special tools needed (if any):

• Socket set
• Torque wrench
• Screwdrivers (various sizes)

Critical steps and tips:

1. Disconnect the negative battery terminal for safety.
2. Remove any components that are blocking access to the engine cover, such as air intake ducts or hoses.
3. Carefully remove the old engine cover by unscrewing the bolts or clips.
4. Clean the mating surfaces on the engine to ensure a good seal.
5. Install the new engine cover and tighten the bolts to the correct torque specifications.
6. Reinstall any removed components and reconnect the battery terminal.

Whether DIY is recommended or professional installation is better:

• DIY is possible for those with basic mechanical skills. However, professional installation is recommended if you are not comfortable working on your engine.

Compare: Used OEM, Refurbished OEM, New Aftermarket

When replacing your upper engine cover, you have several options: Used OEM, Refurbished OEM, and New Aftermarket. Each option offers different benefits in terms of price, quality, and warranty.

Used OEM:

• These are genuine factory parts that have been removed from vehicles.
• They are tested and inspected to ensure they are in good working condition.
• Used OEM parts offer excellent value because they are typically significantly cheaper than new parts.
• They provide the same fit and performance as the original part.

Refurbished OEM:

• These are also genuine factory parts that have been professionally restored.
• They may have been repaired or had certain components replaced.
• Refurbished OEM parts offer a balance of quality and affordability.

New Aftermarket:

• These are brand new parts manufactured by third-party companies.
• They are designed to meet or exceed OE specifications.
• New aftermarket parts can be a good option if you are looking for a new part at a competitive price.

Parts commonly replaced or checked at the same time:

• Valve cover gasket
• Oil filter housing gasket
• PCV valve
• Spark plugs

Why replacing related parts prevents repeat failures:

• Replacing related parts at the same time can prevent future problems and save you time and money in the long run. For example, if the valve cover gasket is leaking, it can cause oil to drip onto the engine cover, which can damage it over time. Replacing the gasket when you replace the engine cover can prevent this from happening.

How long this part normally lasts:

• The upper engine cover typically lasts between 5 to 10 years or 75,000 to 150,000 miles.

Factors that affect longevity:

• Driving conditions: Extreme temperatures and harsh driving can shorten the lifespan.
• Maintenance: Regular oil changes and proper engine maintenance can extend the lifespan.
• Quality of the part: Higher-quality parts tend to last longer.

Budget vs mid-range vs premium options:

• Used OEM: $50 - $150
• Refurbished OEM: $100 - $200
• New Aftermarket: $80 - $250

Labor cost considerations if applicable:

• Professional installation can range from $50 to $150, depending on the shop and location.

Total job cost estimates:

• DIY: $50 - $250 (parts only)
• Professional Installation: $100 - $400 (parts and labor)

Known issues for this vehicle's system related to this part:

• The plastic engine cover on these BMW models is known to become brittle and crack over time, especially in areas with high heat.
• Oil leaks from the valve cover gasket are a common issue that can damage the engine cover.

Any TSBs or common complaints:

• There may be Technical Service Bulletins (TSBs) related to oil leaks and engine cover issues on these models. Check with your local mechanic or search online resources for specific TSBs.

How to confirm proper operation:

• Start the engine and listen for any unusual noises.
• Check for any oil leaks around the engine cover.
• Ensure the engine is running smoothly and there are no warning lights on the dashboard.

What to look/listen for to verify it's working correctly:

• No unusual noises or vibrations from the engine area.
• No oil leaks around the engine cover.
• Normal engine performance and fuel economy.

Q: How do I know if my engine cover is cracked?

A: Look for visible cracks, especially around the edges or mounting points. You might also hear a rattling noise or smell burning oil if oil is leaking onto the exhaust.

Q: Can I drive with a cracked engine cover?

A: It's not recommended. A cracked engine cover can allow debris to enter the engine compartment and can also cause oil leaks.

Q: Is it easy to replace the engine cover myself?

A: It's generally a straightforward repair, but you'll need basic tools like a socket set and screwdriver. If you're not comfortable working on your car, it's best to have a professional do it.

Q: Will a new engine cover improve my car's performance?

A: A new engine cover won't directly improve performance, but it will protect the engine and prevent potential problems caused by a damaged cover.

Q: What happens if I don't replace my cracked engine cover?

A: Ignoring a cracked engine cover can lead to oil leaks, engine damage from debris, and potentially overheating.

OEM Part Numbers:

• BMW: 11127624688, 11127646554

Fits Years: 2012 2013 2014 2015 2016