Shop by Make About Us Track Order
Contact Us
USA Flag
SUPPORT
SMALL BUSINESS
📦 My Cart
- OR -
Radiator
This photo shows the same type of part you'll receive. Since each used part has its own wear and scratches, yours may look slightly different. Check the product notes for details about the condition of this specific part.

2009 - 2011 BMW Z4 Radiator with Transmission Cooler (OEM)

Only 1 left in stock
$139.95

ℹ️ Product Notes

This is a used part. It is a radiator assembly. It is designed for vehicles with an automatic transmission (AT).

Fits 3.0L non-turbo engines with automatic transmission. Check your old part for the same mounting clips.
Condition: Excellent (A)
Like new, minimal to no wear
120,740 miles
Odometer reading when part was removed
See Other BMW Z4 Radiators
SKU #
5388481-23105-576

Why Buy Used OEM Parts?

✓ Quality-Verified: Every used OEM part we sell has been professionally inspected and tested to ensure it meets our quality standards. While it may show some cosmetic wear from previous use, it's fully functional and ready to install.

✓ Original Equipment: This is a genuine OEM (Original Equipment Manufacturer) part - the exact same part that came with your vehicle from the factory. It's designed specifically for your make and model, ensuring perfect fitment and performance.

✓ Works Like New: Despite some visual wear, this part will perform just as well as a brand new one. The internal components and functionality are intact, giving you the same reliability you'd expect from OEM quality.

✓ Significant Savings: Save 50-80% compared to buying new! Used OEM parts offer exceptional value - you get factory quality at a fraction of the cost. It's the smart choice for budget-conscious vehicle owners who won't compromise on quality.

✓ Risk-Free Purchase: We stand behind our used parts with a generous 6-month warranty, 30-day returns, and 100% money-back guarantee. If it doesn't work out for any reason, simply return it for a full refund. You have nothing to lose!

🛡️ 30-Day Returns + 6-Month Warranty - Buy with Confidence!

Wrenchy the Robot

Meet Wrenchy - The Amazing Parts Assistant!Meet Wrenchy
The Amazing Assistant!

Let Wrenchy help you confirm if this is the right part.

Ask Wrenchy -
Type or Speak! 🎤

Vehicle Fitment Guide

This part fits the following vehicles:

BMW
Z4 2009-2011 (tapclick to expand)(tapclick to hide)
Swipe left/right to see more info
SubmodelSUB-
MODEL		 Body Style Years Engine Attributes
sDrive30i Convertible 2009 - 2011 L6 3.0L RWD | Automatic & Manual | Fits sDrive30i models only

⚠️ Important: Please verify your vehicle's year, make, model, and specifications before ordering. If you're unsure about fitment, contact our customer service team for assistance.

Policies

Shipping & Handling

  • Standard shipping: 3-7 business days via UPS Ground
  • Parts are carefully packaged to prevent damage during transit

Returns (30 Days)

We accept returns within 30 days of delivery for this part.

  • Defective parts: We will replace the part or issue a refund at our discretion
  • Electronic parts: Must be returned with the sealed inspection bag unopened. The clear bag allows full visual inspection before opening. Once opened, electronic parts can only be exchanged for a replacement if defective — no refunds
  • Programming: "Needs to be programmed to my vehicle" is not a valid return reason. Many modules require dealer programming — we're happy to help connect you with resources if your dealer says it's not programmable
  • Return shipping: We cover return shipping as part of our 100% money-back guarantee
  • Parts must be returned in original packaging and unmodified condition
  • Poorly packaged returns that arrive damaged will not be credited

6-Month Warranty

All used parts include a 6-month warranty from the date of purchase.

  • If your part fails within 6 months, we will send a replacement
  • Refunds are only issued if we cannot provide a suitable replacement
  • Warranty covers defects — not installation errors, misuse, or damage after installation

Note: Warranty is for replacement, not refund. A part failing on day 80? We'll replace it. But the return window for refunds is 30 days.

Damaged in Shipping?

If your part arrives damaged:

  • Stop immediately — do not install the part
  • Keep all original packaging and boxes
  • Take clear photos of the damage and packaging
  • Contact us within 48 hours of delivery

We will handle the carrier claim. You are not responsible for shipping damage — we just need your help documenting it.

Order Cancellation

Orders can be cancelled before shipment for a full refund. Once shipped, cancellations follow our return policy.

Symptoms & Diagnosis

Warning Signs of a Failing Radiator with Transmission Cooler:

  • Engine overheating
  • Coolant leaks (look for green or orange fluid)
  • Low coolant level
  • Transmission fluid mixing with coolant (milky or foamy appearance)
  • Transmission overheating or shifting problems
  • Rust or corrosion on the radiator
  • Cracked or damaged radiator fins

How to Test if This Part is the Problem:

  1. Check Coolant Level: Make sure your coolant level is correct. Low coolant can cause overheating.
  2. Pressure Test: A mechanic can perform a pressure test on the cooling system to check for leaks.
  3. Visual Inspection: Carefully inspect the radiator for leaks, cracks, or damage. Look for signs of corrosion.
  4. Transmission Fluid Check: Check the transmission fluid for a milky or foamy appearance, which indicates coolant contamination.
  5. Temperature Monitoring: Use a scan tool to monitor engine and transmission temperatures. Overheating suggests a radiator issue.

Common Failure Causes:

  • Age and wear
  • Corrosion from coolant
  • Physical damage from road debris
  • Clogging from debris or scale buildup
  • Internal leaks between the coolant and transmission fluid sections
  • Overheating events

Buyer's Checklist

What to Look For When Buying:

  • Compatibility: Ensure the radiator is designed for your specific year, make, and model.
  • Condition: Inspect the radiator for any signs of damage, leaks, or corrosion.
  • Cooling Capacity: Verify the radiator has adequate cooling capacity for your vehicle's engine and transmission.
  • Transmission Cooler Fittings: Make sure the transmission cooler fittings are compatible with your vehicle's transmission lines.

Quality Indicators:

  • Material: Look for radiators made from high-quality aluminum or copper-brass.
  • Construction: Check for sturdy construction and well-welded seams.
  • Fin Density: Higher fin density generally indicates better cooling performance.
  • Testing: Ask if the radiator has been pressure tested to ensure it doesn't leak.

What's Typically Included:

  • The radiator itself
  • Transmission cooler fittings (sometimes)
  • Radiator cap (sometimes)
  • Drain plug

Installation Overview

Difficulty Level and Estimated Time:

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

Special Tools Needed:

  • Socket set
  • Wrench set
  • Screwdrivers
  • Pliers
  • Drain pan
  • Coolant
  • Transmission fluid (if needed)
  • Hose clamps
  • Torque wrench

Critical Steps and Tips:

  1. Drain the Coolant: Allow the engine to cool completely before draining the coolant.
  2. Disconnect Hoses: Carefully disconnect the radiator hoses and transmission cooler lines.
  3. Remove Old Radiator: Unbolt the old radiator and remove it from the vehicle.
  4. Install New Radiator: Install the new radiator, making sure it's properly secured.
  5. Connect Hoses: Reconnect the radiator hoses and transmission cooler lines.
  6. Refill Coolant: Refill the cooling system with the correct type and amount of coolant.
  7. Bleed the System: Bleed the cooling system to remove any air pockets.
  8. Check for Leaks: Start the engine and check for leaks.
  9. Top off Fluids: Check and top off transmission fluid if any was lost.

DIY or Professional Installation:

  • DIY is possible for experienced mechanics.
  • Professional installation is recommended for those unfamiliar with automotive repair.

Buying Options

Here's a comparison of your options:

FeatureUsed OEMRefurbished OEMNew Aftermarket
PriceLowestMid-RangeMid-Range to Higher
ConditionUsed, TestedRestoredNew
QualityGenuine Factory PartGenuine Factory Part, RestoredBuilt to OE Specs
ReliabilityGood, ProvenGood, Restored to Like-NewGood, But Varies by Brand
WarrantyVariesVariesVaries

Used OEM:

Used OEM radiators offer the best value. These are genuine factory parts that have been tested and inspected. You get the quality and reliability of an OEM part at a significantly lower price.

Refurbished OEM:

Refurbished OEM radiators are factory parts that have been professionally restored. They often include new components and are a good option if you want a like-new part at a reduced cost.

New Aftermarket:

New aftermarket radiators are brand new parts manufactured by third-party companies. These parts are built to meet or exceed OE specifications. Quality can vary depending on the brand.

Typical Lifespan

  • The typical lifespan of a radiator with transmission cooler is 8-12 years or 100,000-150,000 miles.

Factors That Affect Longevity:

  • Driving conditions: Harsh driving conditions can shorten the lifespan.
  • Maintenance: Regular coolant flushes and inspections can extend the lifespan.
  • Coolant type: Using the correct type of coolant is essential.
  • Climate: Extreme temperatures can affect the lifespan.
  • Road Debris: Impacts from road debris can damage the radiator.

Price Ranges

  • Used OEM: $50 - $150
  • Refurbished OEM: $100 - $250
  • New Aftermarket: $120 - $300

Labor costs for radiator replacement typically range from $200 - $500, depending on the mechanic and the complexity of the job.

Total job cost estimates:

  • Used OEM: $250 - $650
  • Refurbished OEM: $300 - $750
  • New Aftermarket: $320 - $800

Vehicle-Specific Notes

Some models within the 2002-2010 range are known to have issues with coolant expansion tanks cracking, which can put extra stress on the radiator. Regularly inspect the expansion tank for leaks or cracks. Some owners have reported issues with the radiator plastic end tanks cracking over time.

Verification After Install

How to Confirm Proper Operation:

  1. Check Coolant Level: Make sure the coolant level is at the correct level after driving.
  2. Monitor Temperature Gauge: Watch the temperature gauge to ensure the engine is not overheating.
  3. Check for Leaks: Inspect the radiator and hoses for leaks.
  4. Check Transmission Shifting: Ensure the transmission is shifting smoothly.
  5. Listen for Unusual Noises: Listen for any unusual noises coming from the engine or cooling system.

What to Look/Listen For:

  • Stable temperature gauge reading
  • No coolant leaks
  • Smooth transmission shifting
  • No unusual noises

FAQ

Q: How do I know if my radiator is leaking?
A: Look for coolant puddles under your car, a sweet smell coming from the engine, or low coolant levels.

Q: Can I drive with a leaking radiator?
A: It's not recommended. Driving with a leaking radiator can cause your engine to overheat and suffer serious damage.

Q: How often should I flush my coolant?
A: Consult your vehicle's owner's manual, but generally, coolant should be flushed every 30,000 to 50,000 miles.

Q: Is it difficult to replace a radiator myself?
A: Radiator replacement can be challenging, requiring some mechanical knowledge and tools. If you're not comfortable working on your car, it's best to have a professional do it.

Q: What type of coolant should I use?
A: Use the type of coolant recommended in your vehicle's owner's manual. Using the wrong type of coolant can damage your cooling system.

Part Specifications

OEM Part Numbers:

  • BMW: 17117521046, 17117534904, 17117585439

Fits Years: 2009 2010 2011

Why Millions Choose Go-Parts

Your Go-To Place for Auto Parts!

✅

6-Month Warranty

Shop with confidence and peace of mind

🏆

Trusted Since 2007

Over 19 years of excellence

🏅

OEM Quality

Meets or exceeds OE standards

🚚 Fast Shipping • ↩️ 30-Day Returns • 🎯 Perfect Fit Guaranteed

Racing Partner Videos

×

Search by Vehicle

1
2
3