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Genuine OEM 23017838938 - Clutch Slave Cylinder
Product Overview
This Genuine OEM clutch slave cylinder (MPN 23017838938) is the factory-original hydraulic component that engages and disengages the clutch on manual-transmission BMW M5 and M6 models. It fits the high-performance E60 M5 sedan and E63/E64 M6 coupe and convertible from 2006 to 2010, all powered by the legendary 5.0L V10 naturally aspirated engine. The slave cylinder converts hydraulic pressure from the master cylinder into mechanical motion to operate the clutch release bearing, making it essential for smooth gear changes and reliable clutch control.
This clutch slave cylinder is sold individually. Order quantity 1 per vehicle.
Symptoms of a Failing Clutch Slave Cylinder
- Soft or spongy clutch pedal that lacks resistance
- Clutch pedal slowly sinks to the floor when depressed
- Difficulty engaging gears or grinding when shifting
- Visible hydraulic fluid leaks around the slave cylinder or near the transmission
- Clutch does not fully disengage, causing the engine to stall when stopping
- Air in the hydraulic line causing inconsistent clutch feel
Cross Reference Numbers
This Genuine OEM 23017838938 is equivalent to or replaces the following part numbers: 23-01-7-838-938, 2301783893.
Vehicle Compatibility
This part fits the popular models below. For Fitment Confidence, please use the vehicle selector tool above to verify exact compatibility for your vehicle.
- BMW M5 Sedan 5.0 V10 Gas (E60): 2006–2010
- BMW M6 Coupe 5.0 V10 Gas (E63): 2006–2010
- BMW M6 Convertible 5.0 V10 Gas (E64): 2006–2010
This may also fit other applications. Please use the vehicle selector tool to verify fitment.
Often Replaced Together
For a complete clutch hydraulic system service, many owners replace the following at the same time:
- Clutch master cylinder
- Clutch fluid (DOT 4 specification)
- Clutch release bearing
- Clutch disc and pressure plate
Why Shop at eEuroparts.com?
- Proven Expertise: Over 25 years of experience with European vehicles means we know your car inside and out.
- Fitment Confidence: Our accurate cataloging ensures you get the right part the first time, backed by our fitment guarantee.
- Fast, Reliable Shipping: Most in-stock orders ship the same or next business day from our U.S.-based warehouse.
- Transparent Pricing: Competitive prices with no hidden fees or surprise charges.
- Exclusive Kits That Fitâ„¢: Complete repair solutions with no guesswork.
- Established Trust: Serving the European car community since 2000.
Frequently Asked Questions
How do I know if my BMW M5 or M6 needs a new clutch slave cylinder?
The most common sign is a soft or spongy clutch pedal that gradually loses pressure over time or sinks slowly to the floor when held down. You may also notice difficulty engaging gears smoothly or a clutch that does not fully disengage, causing the engine to stall when coming to a stop. Visible fluid leaks around the slave cylinder area near the transmission are a definitive indicator of failure. If you experience any of these symptoms, have the hydraulic system inspected by a qualified technician.
What is the difference between a clutch master and slave cylinder?
The clutch master cylinder is mounted on the firewall near the brake master cylinder and converts pedal pressure into hydraulic pressure. The slave cylinder, located near the transmission, receives that hydraulic pressure and converts it back into mechanical motion to operate the clutch release bearing. Both work together as a hydraulic system; if either fails, clutch operation is compromised.
Can I replace just the slave cylinder, or do I need to replace the master cylinder too?
You can replace the slave cylinder independently if only that component has failed. However, if the system has been in service for many years or shows signs of contamination or leakage in both cylinders, replacing both the master and slave cylinders at the same time ensures a fresh, reliable hydraulic system and minimizes the risk of future failure.
Do I need to bleed the clutch system after installing a new slave cylinder?
Yes, bleeding the clutch hydraulic system is essential after slave cylinder replacement to remove air bubbles that can cause a soft pedal and poor clutch control. Follow the procedure outlined in your BMW service manual or consult a qualified technician to ensure the system is properly bled and the clutch pedal feels firm and responsive.
Is this part a genuine BMW component?
Yes, this is a Genuine OEM part manufactured to BMW factory specifications. Using genuine components ensures exact fitment, proper function, and compatibility with your E60 M5 or E63/E64 M6 clutch hydraulic system. Genuine parts are backed by factory engineering standards and are the same units supplied to BMW dealerships.
What tools and how long does slave cylinder replacement typically take?
Slave cylinder replacement requires basic hand tools, a floor jack, jack stands, and possibly a clutch fluid bleeding kit. The job typically takes 1 to 3 hours depending on vehicle access and whether you are bleeding the system yourself or having a technician perform the work. Consult your service manual for exact procedures and safety precautions before beginning.
Order Genuine OEM 23017838938 today. In-stock orders ship same or next business day from our U.S. warehouse, and our fitment team is one call away if you need help confirming the right part for your BMW M5 or M6.
Note: All information on this page and in the FAQ is for general reference only. Verify fitment and consult a professional as needed. eEuroparts.com is not responsible for incorrect part selection or installation.
- BrandGenuine OEM
- ManufacturerGenuine OEM
- MPN23017838938
- Part TypeClutch Slave Cylinder
- OE Part Numbers23-01-7-838-938, 23017838938
- Fitment
- Fitment TypeVehicle Specific
| Year | Make | Model | Submodel | Notes |
|---|---|---|---|---|
| 2006 | BMW | M5 | Base (5.0 V10 GAS) | Notes: Excludes vehicles without Sequential Manual Gearbox (SMG) |
| 2006 | BMW | M6 | Base (5.0 V10 GAS) | Notes: Excludes vehicles without Sequential Manual Gearbox (SMG) |
| 2009 | BMW | M5 | Base (5.0 V10 GAS) | Notes: Excludes vehicles without Sequential Manual Gearbox (SMG) |
| 2009 | BMW | M6 | Base (5.0 V10 GAS) | Notes: Excludes vehicles without Sequential Manual Gearbox (SMG) |
| 2010 | BMW | M6 | Base (5.0 V10 GAS) | Notes: Excludes vehicles without Sequential Manual Gearbox (SMG) |
| 2010 | BMW | M5 | Base (5.0 V10 GAS) | Notes: Excludes vehicles without Sequential Manual Gearbox (SMG) |
| 2008 | BMW | M6 | Base (5.0 V10 GAS) | Notes: Excludes vehicles without Sequential Manual Gearbox (SMG) |
| 2008 | BMW | M5 | Base (5.0 V10 GAS) | Notes: Excludes vehicles without Sequential Manual Gearbox (SMG) |
| 2007 | BMW | M5 | Base (5.0 V10 GAS) | Notes: Excludes vehicles without Sequential Manual Gearbox (SMG) |
| 2007 | BMW | M6 | Base (5.0 V10 GAS) | Notes: Excludes vehicles without Sequential Manual Gearbox (SMG) |
Warranty Overview
At eEuroparts, we stand behind the quality of the products we sell. Every part we offer is backed by a warranty designed to give you peace of mind and protect your investment.
Standard Warranty – Most Parts
Coverage: 2 years or 24,000 miles (whichever comes first) from purchase date.
Protection: Defects in materials or workmanship under normal personal use.
Eligibility: Applies only to the original purchaser and the vehicle where the part was first installed.
Exclusions:
Wear-and-tear items (brake pads, filters, bulbs, wipers, etc.)
Commercial, fleet, rideshare, off-road, or racing use
Improper installation, misuse, accidents, or modifications
Not Covered: Labor, shipping, towing, or incidental costs.
Bison Performance Warranty – Our House Brand
Coverage: Limited Lifetime Warranty for as long as you own your vehicle.
Applies To: All products sold under the Bison Performance label.
Premium Protection: Goes beyond our standard warranty — if it’s a Bison product, the 2-year/24k mile limit is replaced with lifetime coverage.
Exclusions: Same as the standard warranty (normal wear, commercial use, improper installation, etc.).
What’s Included: Replacement of the defective product (labor and shipping excluded).
Warranty Claim Requirements
To keep claims fast and fair, we require:
Proof of purchase (invoice or order confirmation).
Photos or videos showing the defective part, order number, date, VIN, and odometer reading.
Diagnostic reports or part returns for non-visible issues may be requested.
Claims must be truthful, properly documented, and reflect normal consumer use.
Buy With Confidence: We back our products because we believe in their quality, with a transparent, customer-first warranty process you can trust. And with Bison Performance products, you’ll enjoy Limited Lifetime protection—an assurance few brands can match.
For full details and exclusions, please see our complete Warranty Terms & Conditions.
This summary is for convenience only. For full warranty coverage details, exclusions, and requirements, see our official Warranty Terms & Conditions. In case of conflict, the full policy governs.
Return Policy Overview
Most parts can be returned within 30 days of delivery if unused, uninstalled, and in original packaging.
To start a return, contact customer support via Chat or Contact Us.
Restocking fee: Up to 20% may apply for certain orders (buyer’s remorse, order errors, or special-order items)
Refunds: Issued to your original payment method within 3–5 business days after inspection
Exchanges: Not automatic — please return and reorder
Replacements: May be approved for incorrect or defective items reported within 7 days
Not returnable:
Used or installed parts
Electrical components
Opened filter kits, gaskets, or contaminated items
Final sale or custom orders
Important Notes:
Return shipping is your responsibility unless we made a verified error
Fitment is the customer’s responsibility (we can assist, but do not guarantee)
Country of origin may vary and is not grounds for return
For complete details, please see our full Return Policy.
This Returns summary is provided for convenience only. All returns, refunds, and exchanges are subject to the complete Returns Policy. In the event of any conflict, the full policy governs.
Fast, Reliable Shipping — Straight to Your Door
We ship most orders the same day when placed before 2 PM CST (Monday–Friday). Our main warehouse is just east of Nashville, TN, and we also ship from multiple locations nationwide to get your order to you as quickly as possible.
We use trusted carriers like UPS, FedEx, and USPS.
Tracking info is emailed to you as soon as your order ships.
Delivery estimates at checkout are based on carrier data, but not guaranteed.
Need help with a shipment?
If your order is missing, damaged, or incorrect, just let us know within 5 days of delivery. We’ll walk you through the quick claim process — including a few photos to help us make things right.
For complete details, please see our full Shipping Policy.
This Shipping summary is provided for convenience only. Delivery times, carrier terms, fees, restrictions, risk of loss, and other details are governed by our complete Shipping Policy. In the event of any conflict, the full policy governs.
