OEM Oil Cooler Assembly for 2006-2018 BMW

What to Look for When Buying This Part

• Check for leaks or damage. Look for any signs of cracks, dents, or corrosion.
• Verify it's the correct part. Make sure the part matches your vehicle's specifications.
• Check the condition of the seals and gaskets. Make sure they are in good condition.

Quality Indicators for the Available Options

What's Typically Included with the Part

• The oil cooler assembly itself.
• Sometimes, new seals or gaskets may be included. Check the product description.

Difficulty Level and Estimated Time

• Difficulty: Medium
• Estimated Time: 2-4 hours

Special Tools Needed (if any)

• Socket set
• Wrench set
• Torque wrench
• Drain pan
• Coolant

Critical Steps and Tips

1. Drain the coolant and oil: Properly drain both fluids before starting.
2. Disconnect hoses and lines: Carefully disconnect all hoses and lines connected to the oil cooler.
3. Remove the old oil cooler: Unbolt the old oil cooler and remove it.
4. Install the new oil cooler: Install the new oil cooler and torque the bolts to the correct specifications.
5. Reconnect hoses and lines: Reconnect all hoses and lines.
6. Refill the coolant and oil: Refill the coolant and oil to the correct levels.
7. Bleed the cooling system: Remove any air from the cooling system.

Whether DIY is Recommended or Professional Installation is Better

• DIY is possible for experienced mechanics. If you're not comfortable working on your car, professional installation is recommended.

Compare: Used OEM, Refurbished OEM, New Aftermarket

| Option | Pros be | | Cons and the oil cooler, oil filter, and oil filter housing gasket.

• 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

• Pros: Lowest price, genuine factory part, typically reliable after inspection.
• Cons: May have cosmetic imperfections, shorter lifespan compared to new.

Refurbished OEM

• Pros: Restored to like-new condition, original factory part, typically more reliable than used.
• Cons: Higher price than used OEM.

New Aftermarket

• Pros: Brand new, potentially longer lifespan.
• Cons: Quality can vary, may not fit as perfectly as OEM.

• Oil Filter: Replacing the oil filter ensures clean oil flows through the system.
• Oil Filter Housing Gasket: This gasket often leaks when the oil cooler is replaced.
• Coolant Hoses: Inspect and replace any brittle or cracked coolant hoses.
• Thermostat: A faulty thermostat can cause overheating, stressing the oil cooler.

Replacing these parts at the same time helps prevent future problems and ensures the entire system is working efficiently. A clogged oil filter can restrict oil flow, putting extra strain on the oil cooler. A leaking oil filter housing gasket can cause oil loss and engine damage.

• Typical Lifespan: 75,000 - 150,000 miles

Factors that Affect Longevity

• Driving conditions: Harsh driving conditions, like frequent stop-and-go traffic or towing, can shorten the lifespan.
• Maintenance: Regular oil changes and coolant flushes can help extend the lifespan.
• Climate: Extreme temperatures can put stress on the oil cooler.
• Oil Quality: Using the correct type and grade of oil is crucial.

• Used OEM: $50 - $150
• Refurbished OEM: $100 - $250
• New Aftermarket: $80 - $200
• Labor Cost: $200 - $400
• Total Job Cost Estimate: $250 - $600 (depending on parts and labor)

Some models within the 2006-2021 range are known to have issues with the oil filter housing gasket leaking, which can mimic oil cooler failure symptoms. It's crucial to diagnose the source of the leak correctly. Also, some models have had Technical Service Bulletins (TSBs) related to coolant leaks in the oil cooler area. Check with a mechanic to see if any TSBs apply to your specific vehicle.

How to Confirm Proper Operation

• Check for leaks: After installation, start the engine and check for any oil or coolant leaks around the oil cooler.
• Monitor engine temperature: Keep an eye on the engine temperature gauge to make sure the engine is not overheating.
• Check oil pressure: Verify that the oil pressure is within the normal range.

What to Look/Listen for to Verify It's Working Correctly

• No visible leaks.
• Normal engine temperature.
• Normal oil pressure.
• No unusual noises from the engine.

Q: How do I know if my oil cooler is leaking or if it's just the oil filter housing gasket?
A: It can be tricky to tell. A mechanic can use a dye test or pressure test to pinpoint the exact source of the leak.

Q: Can I drive my car if my oil cooler is leaking?
A: It's not recommended. A leaking oil cooler can lead to overheating and engine damage.

Q: How often should I change my oil to prevent oil cooler problems?
A: Follow your vehicle manufacturer's recommended oil change intervals. Using high-quality oil is also important.

Q: Is it okay to use a new aftermarket oil cooler assembly on my BMW?
A: Yes, a new aftermarket oil cooler assembly can be a good option. Make sure to choose a reputable brand and check reviews before purchasing.

Q: Will I need to replace my coolant when I replace the oil cooler?
A: Yes, you will need to drain and refill the coolant when replacing the oil cooler. It's a good idea to use fresh coolant.

OEM Part Numbers:

• BMW: 11427508967, 11427525333

Fits Years: 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018