2019 - 2024 BMW Z4 Turbocharger (OEM)

What to look for when buying this part:

• Check the part's condition (if used or refurbished).
• Verify the part is compatible with your vehicle's year and model.
• Read reviews from other buyers (if available).
• Understand the warranty or return policy.

Quality indicators for the available options:

What's typically included with the part:

• The turbocharger itself
• Gaskets and seals (sometimes)
• Mounting hardware (sometimes)
• Check if oil lines are included or need to be purchased separately.

Difficulty level and estimated time:

• Difficulty: Medium to High
• Estimated time: 3-6 hours

Special tools needed (if any):

• Socket set
• Wrench set
• Torque wrench
• Pliers
• Screwdrivers
• Possibly E-Torx sockets
• Penetrating oil

Critical steps and tips:

1. Disconnect the negative battery cable.
2. Remove the air intake and exhaust components connected to the turbocharger.
3. Disconnect the oil and coolant lines.
4. Unbolt the turbocharger from the exhaust manifold.
5. Install the new turbocharger, using new gaskets and seals.
6. Reconnect all lines and components in the reverse order.
7. Prime the turbocharger with oil before starting the engine.

Whether DIY is recommended or professional installation is better:

• Professional installation is recommended, especially if you lack experience with turbocharger systems. DIY is possible if you have good mechanical skills and tools.

Compare: Used OEM, Refurbished OEM, New Aftermarket

Used OEM:

• Best value for genuine factory parts. These parts have been tested and inspected to ensure they are in good working condition. You get OEM quality at a significantly lower price.

Refurbished OEM:

• Factory parts that have been professionally restored. These units have been inspected, cleaned, and rebuilt with new components to meet or exceed original specifications.

New Aftermarket:

• Brand new turbochargers manufactured by third-party companies. These parts are designed to meet OE specifications and offer a cost-effective alternative to new OEM parts.

Parts commonly replaced or checked at the same time:

• Oil feed and return lines
• Air filter
• Gaskets and seals
• Intercooler
• Diverter valve (if applicable)

Why replacing related parts prevents repeat failures:

• Replacing worn or damaged oil lines ensures proper lubrication to the turbocharger, preventing oil starvation. A clean air filter prevents debris from entering the turbocharger. Replacing gaskets and seals prevents leaks.

How long this part normally lasts:

• A turbocharger typically lasts between 100,000 and 150,000 miles.

Factors that affect longevity:

• Regular oil changes with the correct type of oil
• Avoiding hard acceleration when the engine is cold
• Allowing the engine to idle for a few minutes after hard driving
• Addressing any engine problems promptly

Budget vs mid-range vs premium options:

• Used OEM: $300 - $600
• Refurbished OEM: $500 - $800
• New Aftermarket: $600 - $1000+

Labor cost considerations if applicable:

• Labor costs for turbocharger replacement typically range from $500 to $1000, depending on the shop and the complexity of the job.

Total job cost estimates:

• Used OEM: $800 - $1600
• Refurbished OEM: $1000 - $1800
• New Aftermarket: $1100 - $2000+

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

• Oil leaks from the turbocharger oil lines are a common issue.
• Carbon buildup in the intake system can affect turbocharger performance.
• Some owners have reported issues with the diverter valve.

Any TSBs or common complaints:

• Check for any Technical Service Bulletins (TSBs) related to the turbocharger on your specific vehicle model and year.

How to confirm proper operation:

• Check for any unusual noises from the turbocharger.
• Monitor boost pressure using a scan tool.
• Ensure there are no leaks from the turbocharger or its connections.

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

• Smooth and consistent acceleration
• Normal engine performance
• No warning lights on the dashboard

Q: How do I know if my turbocharger is bad?
A: Common signs include loss of power, unusual noises (whining, whistling), excessive smoke, and a check engine light.

Q: Can I drive with a bad turbocharger?
A: It's not recommended. Driving with a bad turbo can cause further damage to your engine.

Q: What kind of oil should I use with my turbocharger?
A: Use a high-quality synthetic oil that meets the manufacturer's specifications for your vehicle.

Q: How often should I change my oil when I have a turbocharger?
A: It's generally recommended to change your oil more frequently, every 5,000 to 7,500 miles, to ensure proper lubrication for the turbocharger.

Q: Is it difficult to replace a turbocharger myself?
A: Turbocharger replacement can be complex and requires specialized tools. Professional installation is often recommended.

OEM Part Numbers:

• BMW: 11658631904, 11658662073, 11659845815, 984581505

Fits Years: 2019 2020 2021 2022 2023 2024