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          Hella 007800121 - Engine Cooling Fan Switch

          MPN: 007800121
          The Hella 007800121 Engine Cooling Fan Switch regulates your BMW's cooling fan to prevent overheating. Designed for precise fit and reliable operation.
          0.0
          Vehicle Specific
          Check if this part fits your vehicle.
          • $26.86
          In stock

          Product Overview

          The Hella Engine Cooling Fan Switch 007800121 is an essential component for maintaining optimal engine temperature in your BMW vehicle. Engineered to OEM standards, this high-quality switch ensures reliable operation under various driving conditions, making it a trusted choice for both DIYers and professional technicians alike. With its premium-grade construction and precise fitment, you can be confident in the longevity and performance of your vehicle's cooling system. Choose Hella 007800121 for dependable performance and peace of mind every time you service your vehicle.

          Cross Reference Numbers

          This Hella 007800121 is equivalent to or replaces the following part numbers: 61318363677, 6ZT007800121, 6ZT 007 800-121, 61 31 8 363 677.

          Vehicle Compatibility

          • BMW Z3 M Roadster 3.2L6 (2001–2002)
          • BMW Z3 M Coupe 3.2L6 (2001–2002)
          • BMW Z3 Roadster 2.5L6 (2000–2002)
          • BMW Z3 Roadster 3.0L6 (2000–2002)
          • BMW Z3 Coupe 3.0L6 (2000–2002)
          • BMW Z3 M Roadster 3.2L6 (1999–2000)
          • BMW 323i 2.5L6 (1998–1999)
          • BMW 328i 2.8L6 (1998–1999)
          • BMW M3 3.2L6 (1995–1999)
          • BMW 325i 2.5L6 (1995–1996)

          This may also fit other applications. Please use the vehicle selector tool to verify fitment.

          Why Shop at eEuroparts.com?

          • Proven Expertise: Over 25 years of experience with European vehicles means we know your car inside and out.
          • Exclusive Kits That Fit™ - complete repair solutions with no guesswork
          • Fitment Confidence: Our accurate cataloging ensures you get the right part the first time.
          • Fast, Reliable Shipping: Orders ship quickly from our U.S.-based warehouses.
          • Transparent Pricing: Competitive prices with no hidden fees or surprise charges.
          • Established Trust: Serving the European auto community since 2000.

          Frequently Asked Questions

          What does the Hella 007800121 Engine Cooling Fan Switch do?

          The Engine Cooling Fan Switch is responsible for regulating the operation of the engine cooling fan. It activates the fan when the engine temperature reaches a certain threshold, preventing overheating and ensuring efficient engine performance.

          How do I know if my Engine Cooling Fan Switch needs replacement?

          Common symptoms indicating that the cooling fan switch may need replacement include engine overheating, the cooling fan not activating when needed, and abnormal temperature readings on the dashboard.

          Can I install the Hella 007800121 myself?

          What are the symptoms of a faulty Engine Cooling Fan Switch?

          Symptoms of a faulty cooling fan switch include engine overheating, the cooling fan remaining on continuously, or the fan not turning on at all. If you see DTCs such as P0480, P0481, and P0482, it may indicate a failing Engine Cooling Fan Switch.

          Why should I choose Hella for my Engine Cooling Fan Switch needs?

          Hella is a trusted name in automotive components, known for its quality and reliability. Order Hella 007800121 today for a factory-correct replacement that restores safety and performance.

          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.

            • eEuroparts SKU
              13160
            • Weight
              0.1036 lbs
            • Dimensions (L x W x H)
              1.7717 x 1.063 x 2.4409 in
            • Barcode
              04082300186765
            • Manufacturer Part #
              007800121
          • Brand
            Hella
          • Manufacturer
            Hella
          • MPN
            007800121
          • Part Type
            Engine Cooling Fan Switch
          • OE Part Numbers
            61 31 8 363 677, 61318363677, 8 363 677, 8363677
          • Cross Reference Numbers
            LFS087, 50422, 20991262, V20-99-1262, V20991262, 0824121152, 82698, 21832, SRF080, 820316, 2704, XEFS331, TS2704, SNB1437, RFS3245, 7.5684, 75684
          • Features
            Assy/Disassy by Qualified Personnel Required! : .
            Combi Switch Function : Dual Output
            Combi Switch Function : Normally Open Contact
            Mounting Type : Bolted
            Number of pins : 3
            Plug Type : Blade Terminal
            Spanner Size : 22
            Switch : with Double Thermal Switch
            Switch point from [°C] : 85
            Switch point from [°F] : 185.00
            Switch point to [°C] : 97
            Switch point to [°F] : 206.60
            Thread Size : M14 x 1.5
            Voltage : 12.00
            Voltage [V] : 12
          • Fitment
            • Fitment Type
              Vehicle Specific
          YearMakeModelSubmodelNotes
          1999BMW323iBase (2.5 L6 GAS)
          1999BMW323isBase (2.5 L6 GAS)
          1999BMW328isBase (2.8 L6 GAS)
          1999BMWM3Base (3.2 L6 GAS)
          1999BMWZ3M Roadster (3.2 L6 GAS)
          1999BMWZ3Roadster (2.5 L6 GAS)Notes: 12V - 3-Pin Connector - Blade Terminal - Bolted - Dual Output/Normally Open Contact
          1999BMWZ3Roadster (2.8 L6 GAS)Notes: 12V - 3-Pin Connector - Blade Terminal - Bolted - Dual Output/Normally Open Contact
          1999BMWZ3Coupe (2.8 L6 GAS)
          1999BMWZ3M Coupe (3.2 L6 GAS)
          1998BMW323iBase (2.5 L6 GAS)
          1998BMW323isBase (2.5 L6 GAS)
          1998BMW328iBase (2.8 L6 GAS)
          1998BMW328isBase (2.8 L6 GAS)
          1998BMWM3Base (3.2 L6 GAS)
          1998BMWZ3Roadster (2.8 L6 GAS)Notes: 12V - 3-Pin Connector - Blade Terminal - Bolted - Dual Output/Normally Open Contact
          1998BMWZ3M Roadster (3.2 L6 GAS)
          1995BMW325iBase (2.5 L6 GAS)Engine: M50TU, Notes: From 09/95, 12V - 3-Pin Connector - Blade Terminal - Bolted - Dual Output/Normally Open Contact
          1995BMW325isBase (2.5 L6 GAS)
          1995BMWM3Lightweight (3.0 L6 GAS)
          1995BMWM3Base (3.0 L6 GAS)
          1996BMW328iBase (2.8 L6 GAS)
          1996BMW328isBase (2.8 L6 GAS)
          1996BMWM3Base (3.2 L6 GAS)
          1997BMW328iBase (2.8 L6 GAS)
          1997BMW328isBase (2.8 L6 GAS)
          1997BMWM3Base (3.2 L6 GAS)
          1997BMWZ3Roadster (2.8 L6 GAS)Notes: From 05/1997, 12V - 3-Pin Connector - Blade Terminal - Bolted - Dual Output/Normally Open Contact
          2000BMWZ3Roadster (2.8 L6 GAS)Notes: 12V - 3-Pin Connector - Blade Terminal - Bolted - Dual Output/Normally Open Contact
          2000BMWZ3Roadster (2.5 L6 GAS)Notes: 12V - 3-Pin Connector - Blade Terminal - Bolted - Dual Output/Normally Open Contact
          2000BMWZ3Coupe (2.8 L6 GAS)
          2000BMWZ3M Coupe (3.2 L6 GAS)
          2000BMWZ3M Roadster (3.2 L6 GAS)
          2001BMWZ3M Roadster (3.2 L6 GAS)
          2001BMWZ3M Coupe (3.2 L6 GAS)
          2001BMWZ3Coupe (3.0 L6 GAS)
          2001BMWZ3Roadster (3.0 L6 GAS)Notes: 12V - 3-Pin Connector - Blade Terminal - Bolted - Dual Output/Normally Open Contact
          2001BMWZ3Roadster (2.5 L6 GAS)Notes: 12V - 3-Pin Connector - Blade Terminal - Bolted - Dual Output/Normally Open Contact
          2002BMWZ3M Roadster (3.2 L6 GAS)
          2002BMWZ3M Coupe (3.2 L6 GAS)
          2002BMWZ3Roadster (2.5 L6 GAS)Notes: 12V - 3-Pin Connector - Blade Terminal - Bolted - Dual Output/Normally Open Contact
          2002BMWZ3Roadster (3.0 L6 GAS)Notes: 12V - 3-Pin Connector - Blade Terminal - Bolted - Dual Output/Normally Open Contact
          2002BMWZ3Coupe (3.0 L6 GAS)
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          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.

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