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BMW Expansion Tank Cap - Genuine BMW 17117639020
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BMW Expansion Tank Cap - Genuine BMW 17117639020

Genuine BMW
BMW-17117639020
Many in stock
$49.00 CAD $45.00 CAD
In Stock

Estimated Delivery: Jun 08, 2026 - Jun 14, 2026

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BMW Expansion Tank Cap - Genuine BMW 17117639020
Product Product subtotal Quantity Price Product subtotal
BMW Expansion Tank Cap - Genuine BMW 17117639020
BMW Expansion Tank Cap - Genuine BMW 17117639020BMW-17117639020
BMW Expansion Tank Cap - Genuine BMW 17117639020BMW-17117639020
$49.00
$45.00/ea
 $0.00
$49.00
$45.00/ea
 $0.00

Details

SKU: BMW-17117639020
Quality: Genuine
Made in: Slovakia

OE Numbers

17117639020, 17117521071

MFG Numbers

N/A

Product Information

This Genuine BMW engine coolant reservoir cap (part number 17117639020) is designed to maintain proper pressure within your vehicle’s cooling system. By ensuring the correct operating pressure, it prevents coolant loss and helps the system regulate temperature efficiently.

The cap plays an essential role in preventing overheating and coolant boiling by sealing the expansion tank and releasing pressure at the correct threshold. It is a small but critical component that contributes to the reliability and longevity of the cooling system.

If your cooling system shows signs of leaks or pressure loss, replacing the cap is an inexpensive and effective first step in maintaining proper cooling performance.

Engine Coolant Reservoir Cap Failure Symptoms:
Coolant leaks around the reservoir
Engine overheating due to loss of pressure
Frequent low coolant levels or air in the system

About Genuine BMW

Genuine BMW parts are the same components used during factory production. When you order a Genuine BMW part, you're receiving the exact item sourced by BMW dealerships — built to BMW’s precise engineering and quality standards.

While BMW engineers each part, many are manufactured by well-known OEMs (Original Equipment Manufacturers) such as Lemförder, ZF, Sachs, Bosch, Valeo, Zimmermann, Siemens VDO, and Corteco. These parts may even arrive in their OEM-branded packaging, alongside a BMW logo.

Look for OE tags throughout our listings to identify direct from BMW components — helping you save without compromising quality. Visit our FAQ for more insight on OEM vs. OE terminology.

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GEMS autocraft offers quality auto parts, performance upgrades, accessories, maintenance services, retrofit solutions, and advanced coding support for a wide range of vehicles.

Returns are accepted within 30 days of delivery, provided the item is unused, in its original packaging, and in resellable condition. For complete details, please see our Return Policy.

Yes, we ship worldwide. Orders are packed carefully and overboxed when needed to help ensure they arrive safely.

Yes. Once your order has shipped, you will receive a tracking number by email. You can also check your order status anytime through your customer account under the Orders section.

We accept major credit cards, PayPal, Apple Pay, Google Pay, Shop Pay, e-Transfer, and Wise to offer a secure checkout experience.

GEMS autocraft Return & Warranty Policy

We stand behind the products and services we offer. Our return and warranty process is designed to be clear, fair, and efficient, so every request can be reviewed properly and handled with care.

Returns
Return Window Returns must be requested within 30 days of delivery.
Item Condition Items must be unused, complete, in their original packaging, and in resellable condition.
Final Sale Items Electrical components, fluids, lubricants, used parts, custom orders, special orders, and gift cards are final sale.
Warranty Coverage
Product Warranty Manufacturer's applicable warranties are honored on all products, typically ranging from 1 to 5 years depending on the brand and product.
Service Warranty Repair, rebuild, and installation services are covered by a 1 year workmanship warranty.
Installed Parts When parts are supplied and installed by GEMS autocraft, eligible warranty claims cover both the part and the workmanship.
Claims & Processing
Claim Requirements Please provide your order number, product details, a clear description of the issue, and photos when applicable.
Refund Processing Once received, inspected, and approved, refunds are issued to the original payment method within 3 to 5 business days.
Return Shipping Return shipping and insurance are the customer’s responsibility unless the return is approved as part of an eligible warranty claim.

Warranty coverage may vary by product, brand, service type, and condition. For complete terms, exclusions, and examples, please read the full Return and Warranty Policy.

Submit Return Request Submit Warranty Claim

Need help before submitting a request? Contact our support team.

GEMS Guard™ Warranty Protection

GEMS Guard™ is our commitment to long term confidence across the products and services we support. It brings together lifetime protection on GEMS autocraft branded parts, honored manufacturer warranties on eligible products, and a 1 year workmanship warranty on services performed by GEMS autocraft.

Product Protection
GEMS Branded Parts All GEMS autocraft branded products are protected by our GEMS Guard™ Lifetime Warranty.
Manufacturer Warranty Support Manufacturer's applicable warranties are honored on all eligible products, typically ranging from 1 to 5 years depending on the brand and product.
Built With Accountability Whether it carries the GEMS name or is supported through the original manufacturer, our team helps review eligible claims and guide the warranty process properly.
Service Protection
Repair and Rebuild Services All repair and rebuild services performed by GEMS autocraft are backed by a 1 year workmanship warranty on the work completed.
Professional Installation Installation work completed by GEMS autocraft is covered for 1 year from the completion date, giving you confidence that the work was performed with care and accountability.
Supplied and Installed by GEMS When a covered part is both supplied and installed by GEMS autocraft, eligible claims cover the part and the workmanship together during the applicable warranty period.
How Claims Work
Simple Review Our team reviews each claim directly to confirm product eligibility, warranty type, issue details, and the best next step.
Required Details Please provide your order number, product details, a clear description of the issue, and photos or diagnostic information when applicable.
Fair Resolution Once approved, we will help resolve the claim as efficiently as possible through repair, replacement, store credit, manufacturer support, or another appropriate warranty solution.

Coverage does not apply to misuse, improper installation, modification, abuse, neglect, or damage caused by unrelated vehicle issues. Warranty coverage may vary by product, brand, service type, and condition. For complete terms, please read the full Return and Warranty Policy.

Submit Warranty Claim Contact Support

Not sure if your product or service is covered? Contact our support team.

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