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  • BMW Thermostat Assembly - Mahle Behr 11538671516
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BMW Thermostat Assembly - Mahle Behr 11538671516
BMW Thermostat Assembly - Mahle Behr 11538671516
BMW Thermostat Assembly - Mahle Behr 11538671516
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BMW Thermostat Assembly - Mahle Behr 11538671516

MPN: 11538671516

Mahle
MAH-TM21103
In stock
$349.00 CAD $299.00 CAD

In Stock

Estimated Delivery: Sep 10, 2025 - Sep 16, 2025

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BMW Thermostat Assembly - Mahle Behr 11538671516
Product Product subtotal Quantity Price Product subtotal
BMW Thermostat Assembly - Mahle Behr 11538671516
BMW Thermostat Assembly - Mahle Behr 11538671516MAH-TM21103
BMW Thermostat Assembly - Mahle Behr 11538671516MAH-TM21103
$349.00
$299.00/ea
 $0.00
$349.00
$299.00/ea
 $0.00
Description

Details

SKU: MAH-TM21103
GTIN / UPC: 04250192904549
Made in: Germany
Quality: OE

OE Numbers

11537601159, 11538671516

MFG Numbers

TM21103

Product Information

This 103°C thermostat, including housing, is a critical part of your BMW's cooling system. It precisely regulates coolant flow to maintain optimal engine temperature. Thermostats commonly fail in the open position, causing the engine to never reach proper operating temperature and resulting in reduced heater performance. A thermostat stuck closed can cause overheating and potentially severe engine damage.

When replacing your BMW's thermostat, always use new coolant—Genuine BMW coolant mixed 50/50 with distilled water is recommended for this application.

Thermostats should be installed with the jiggle pin bleed valve at 12 o'clock when possible for proper air removal.

Common thermostat failure symptoms:

  • Overheating engine
  • Engine not reaching optimal running temperature
  • Radiator fan not engaging

 

About Mahle

Mahle stands at the forefront of automotive engineering, developing advanced engine, filtration, and thermal management solutions for vehicles worldwide. With a heritage dating back to 1920, Mahle is a primary OE supplier to global manufacturers including BMW, Mercedes-Benz, Audi, VW, Porsche, and more. Renowned for their innovation, Mahle’s product range covers oil filters, air filters, pistons, engine parts, thermostats, and cooling systems—all produced to exacting standards for optimum efficiency and reliability. Mahle’s aftermarket products are identical in quality to original equipment, guaranteeing the same level of performance and longevity found in new vehicles. Rely on Mahle for precision, longevity, and German engineering trusted by professionals and enthusiasts alike.

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At GEMS autocraft, we offer high-quality auto parts, performance upgrades, and accessories. We also specialize in professional maintenance services, BMW retrofits, and advanced coding solutions—all available at our Longueuil, QC location.

Returns are accepted within 30 days if the item is unused and in original packaging. For full details, see our Return Policy.

Yes! All worldwide orders are shipped over boxed for security.

Yes! Once your order ships, you will receive a tracking number via email. You can also track your order anytime by logging into your account and visiting the "Orders" tab.

We accept credit cards, PayPal, Apple Pay, Google Pay, and Shop Pay for a seamless checkout experience.

GEMS autocraft Return & Warranty Policy

We are committed to customer satisfaction and offer a clear and efficient process for returns and warranty claims.

⟶ Returns
Return Window: Returns must be requested within 30 days of delivery.
Item Condition: Items must be unused, in original packaging, and in resellable condition.
Non-Returnable Items: Electrical components, fluids, lubricants, used parts, custom orders, and gift cards are final sale.
⟶ Warranty
Warranty Coverage: Most products and services are backed by a 1-year manufacturer or workmanship warranty. Eligibility may vary.
Claim Requirements: To submit a claim, provide the order number, product details, and a description of the issue. Supporting photos may be requested.
⟶ Additional Details
Refund Processing: Once inspected, refunds are issued within 3–5 business days to the original payment method.
Shipping Responsibility: Return shipping is the customer’s responsibility. Prepaid labels are available upon request.
Policy Details: View our complete Return and Warranty Policy for full conditions and examples.

Submit Return Request Submit Warranty Claim

Need help? Contact our support team.

We stand behind the quality of every product we offer. All manufacturer warranties are honored according to their policies, with most components covered for 1-5 years. All GEMS autocraft branded products are backed by a lifetime warranty.

Standard shipping fees may apply.

For customers choosing installation at GEMS autocraft, we take it a step further—both the replacement part and installation are covered at no charge during the warranty period.

Drive with confidence, knowing your investment is fully protected.

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