✅ Fix Common Leak Issues
The OEM plastic hose fitting is a well-known weak point in BMW’s cooling system, prone to cracking and leaking over time. Our upgraded aluminum replacement solves this problem permanently by offering superior durability and leak resistance.
✅ Upgraded Aluminum Construction
Made of high-strength 6061 billet aluminum with precision CNC machining. Unlike plastic fittings, this aluminum version is wear-resistant, heat-resistant, and corrosion-proof—no more cracking or aging under engine heat.
✅ Improved Cooling Efficiency
Our fitting features a smoother inner wall and increased diameter compared to the factory plastic part, resulting in better coolant flow and improved thermal performance.
✅ Direct Replacement Design
No modification required. Simply remove the OEM fitting and install our upgraded one. This fitting connects directly to the cylinder head; no need to remove the hose from the thermostat side.
Includes:
✅ Wide Compatibility
Replaces OEM part number: 11537541992 / 11537544638
✅ Vehicle Compatibility
⚠️ Note: This fitting is not compatible with 1/3/Z4 Series running N52/N53 engine, nor with 5/6/7 Series running N54 engine.
✅ For BMW 1/3/Z4 Series (N54 engine only):
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1 Series
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3 Series
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E90/E91/E92/E93 Sedan, Touring, Coupe, Convertible (2006–2013): 335i, 335xi, 335is (N54/N54T)
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Z4
✅ For BMW 5/6/7 Series (N52/N53 engine only):
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5 Series
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E60/E61 Sedan & Touring (2004–2010): 523i, 525i, 528i, 530i, 530xi (N52/N53)
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6 Series
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7 Series
Installation Tips
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Remove the two 10mm bolts holding the OEM fitting.
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Carefully pull out the plastic fitting and remove the old O-ring from the engine block.
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Clean the engine outlet thoroughly.
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Lubricate the new O-ring, insert the aluminum fitting, and bolt it down securely.
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Reattach the coolant hose and secure with the included stainless steel clamp
We appreciate your business and are committed to providing you with exceptional service and timely delivery. Please review the shipping information below for your order.
Order Processing Time:
- Orders are usually processed within 24-48 hours after the order has been placed.
- Custom or special order items may take longer to process, typically 3-5 business days.
Shipping Methods:
- Standard Shipping (8-12 business days)
- Expedited Shipping (3-5 business days) – For expedited shipping inquiries, please contact us at SPCRSO@gmail.com.
Promotion:For orders containing two or more items placed within the next 48 hours, you can now contact us at SPCRSO@gmail.com to receive a shipping discount voucher. Don't miss out on this limited-time offer!
Packaging:
Rest assured that all items will be securely and safely packaged to prevent any damage during transit. Fragile or high-value parts will be packaged with additional protective materials, such as bubble wrap or foam padding.
Order Tracking:
Once your order has been shipped, you will receive an email with the tracking number and carrier information. You can also track your order status by logging into your account.
International Shipping:
We’re excited to announce our new shipping promotion! For orders with two or more items, you can now contact us at SPCRSO@gmail.com to receive a shipping discount voucher. This is our way of making your shopping experience even more convenient and cost-effective.
Feel free to reach out if you have any questions or need assistance with your order!
Frequently Asked Questions
At SPCRSO, we are committed to providing the best customer service and support. Below are answers to some of the most frequently asked questions we receive. Still need help? Please Contact Us and we'll be happy to assist!
Q: How long will it take for my order to ship?
A: Most items will be shipped within 24 hours of placing your order. Shipping time may also depend on the speed selected at checkout. For in-stock items, we typically ship the same day. Additionally, we work with a network of warehouses across the country, enabling us to process special orders and ship within 2-3 days. If an item is backordered or discontinued, we will do our best to find a replacement quickly.
Q: How long will it take for my order to arrive?
A: Standard delivery typically takes 8-12 days. If you need expedited shipping (3-5 days), please contact us at SPCRSO@gmail.com for assistance.
Q: How can I be sure the product fits my vehicle?A: Each product details page includes a description of the compatible vehicle models, so it’s unlikely to make a mistake. However, if you’re not 100% sure, you can send us your vehicle’s make, model, and year, along with the part you’re interested in, to SPCRSO@gmail.com, and we’ll typically get back to you within 24 hours.
Q: What if I receive a part that doesn’t fit or I’m not satisfied?
A: We accept returns for brand-new, unused parts within 14 days of receipt. Please refer to our Return and Refund Policy for more details.
Q: Are you an authorized dealership?
A: No. All car accessories sold on this website are not original parts. We provide 1:1 custom-made substitutes based on the specifications of car accessories. All product details, specifications, and compatibility information are for reference purposes only.
Q: Are all OEM parts for sale on your website in stock?
A: Our online parts catalog serves as a reference guide. It may not reflect the current availability or stocking status of parts. Some parts may be out of stock or discontinued, and prices are subject to change. Please contact us to confirm availability if you need expedited delivery.
Q: What happens if I need to return or exchange a part?
A: Please refer to our Return Policy for detailed information on returns and exchanges. The link can be found at the bottom of our homepage.
Q: What if the part is broken or damaged during shipping?
A: If your part is damaged during shipping, we will send you a return label via email and ship a replacement as quickly as possible.
Q: How can I be sure the part I need will fit my vehicle?
A: The product details page clearly lists the compatible vehicle models, so you can confidently make your purchase. If you still have any doubts, feel free to contact us when placing your order. We will manually verify your order to ensure the part is a perfect fit for your vehicle.
Q: Do you offer a warranty on parts and accessories?
A: Yes. Please refer to our Warranty Page for detailed warranty information.
Q: How do I know if I need a left or right side part?
A: The right side refers to the passenger side, and the left side refers to the driver’s side. You can also visualize it by sitting behind the wheel of your vehicle.
Q: Why are OEM parts better for my vehicle?
A: At SPCRSO, we are committed to delivering exceptional product quality and customer service. We believe that continuous innovation and improvement allow us to provide unmatched value and service for BMW owners and automotive professionals.
Q: Do you offer promo codes or coupons?
A: Yes, we periodically offer promo codes/coupons, which will be announced on our website, social media (Facebook, TikTok, YouTube, Instagram, WhatsApp), email newsletters, and on our sponsored message boards.
Q: What are my payment options?
A: We accept major credit cards, PayPal, and secure bank wire transfers.
Q: Do you charge sales tax?
A: No, we do not charge sales tax.
Q: Do you provide a tracking number?
A: Yes! All orders will receive a confirmation email with tracking information once your order has shipped.
