2012 - 2016 BMW Z4 Intake Manifold Assembly (OEM)

What to look for when buying this part:

• Check for any visible damage, such as cracks or broken pieces.
• Ensure the part is clean and free of debris.
• Verify that all mounting points are intact.
• Confirm that the part matches the original design.

Quality indicators for the available options:

• Used OEM: Look for parts that have been thoroughly inspected and tested.
• Refurbished OEM: Check for a warranty and details about the refurbishment process.
• New Aftermarket: Research the brand and read reviews to ensure quality.

What's typically included with the part:

• The intake manifold assembly itself.
• Sometimes, new gaskets or seals are included. Check the product description.
• Mounting hardware may or may not be included.

Difficulty level and estimated time:

• Difficulty: Intermediate.
• Estimated time: 2-4 hours.

Special tools needed (if any):

• Socket set
• Wrench set
• Torque wrench
• Screwdrivers
• Possibly a vacuum gauge or smoke machine for leak testing after installation.

Critical steps and tips:

1. Disconnect the battery before starting.
2. Label all hoses and connectors before disconnecting them.
3. Clean the mating surfaces before installing the new manifold.
4. Torque all bolts to the manufacturer's specifications.
5. Double-check all connections before starting the engine.

Whether DIY is recommended or professional installation is better:

• DIY is possible for mechanically inclined individuals. However, professional installation is recommended to ensure proper installation and avoid potential damage.

Compare: Used OEM, Refurbished OEM, New Aftermarket

• Used OEM: Best value. Genuine factory parts, tested and inspected, at significantly lower prices.
• Refurbished OEM: Factory parts professionally restored with new components.
• New Aftermarket: Brand new third-party parts built to OE specs.

Used OEM: Best value - genuine factory parts, tested and inspected, at significantly lower prices.

Refurbished OEM: Factory parts professionally restored with new components.

New Aftermarket: Brand new third-party parts built to OE specs.

All options are good choices depending on your budget and needs.

Parts commonly replaced or checked at the same time:

• Intake manifold gaskets
• Throttle body gasket
• Vacuum hoses
• Fuel injectors

Why replacing related parts prevents repeat failures:

• Replacing worn gaskets and hoses ensures a proper seal and prevents vacuum leaks.
• Cleaning or replacing fuel injectors can improve engine performance and fuel economy.

How long this part normally lasts:

• An intake manifold assembly can last for 100,000 miles or more under normal conditions.

Factors that affect longevity:

• Driving conditions (extreme heat or cold).
• Regular maintenance.
• Quality of the replacement part.

Budget vs mid-range vs premium options:

• Used OEM: $150 - $300
• Refurbished OEM: $250 - $450
• New Aftermarket: $300 - $600

Labor cost considerations if applicable:

• Professional installation can add $200 - $500 to the total cost.

Total job cost estimates:

• DIY: $150 - $600 (depending on part choice)
• Professional Installation: $350 - $1100 (depending on part choice and labor rates)

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

• Some models are prone to cracking around the coolant passages.
• Oil leaks can sometimes occur around the intake manifold gasket.

Any TSBs or common complaints:

• Check for any Technical Service Bulletins (TSBs) related to intake manifold issues on this vehicle.

How to confirm proper operation:

• Start the engine and listen for any unusual noises.
• Check for vacuum leaks using a smoke machine or by spraying carburetor cleaner around the manifold (use caution).
• Monitor engine performance and fuel economy.

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

• Smooth idling.
• No whistling or hissing noises.
• Normal engine power and acceleration.
• No Check Engine Light.

Q: How do I know if my intake manifold is cracked?
A: Look for visible cracks, especially around the coolant passages. You may also hear a hissing sound or experience rough idling.

Q: Can I drive with a cracked intake manifold?
A: It's not recommended. A cracked intake manifold can cause poor engine performance, reduced fuel economy, and potential engine damage.

Q: What happens if I don't replace a leaking intake manifold gasket?
A: A leaking gasket can cause vacuum leaks, leading to rough idling, poor performance, and a Check Engine Light.

Q: Are aftermarket intake manifolds as good as OEM?
A: Some aftermarket manifolds are built to OE specs and can perform just as well. Research the brand and read reviews before purchasing.

Q: Do I need to replace the fuel injectors when replacing the intake manifold?
A: It's not always necessary, but it's a good opportunity to inspect and clean the injectors. If they are old or clogged, replacing them can improve engine performance.

OEM Part Numbers:

• BMW: 11-61-7-588-126, 11617588126, 7588126

Fits Years: 2012 2013 2014 2015 2016