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Genuine OEM 0018307884 - HVAC Heater Control Valve
Product Overview
The Genuine OEM 0018307884 is an HVAC heater control valve engineered for Mercedes-Benz E-Class sedans from the W210 generation (1996–2002). This valve regulates coolant flow to the heater core, controlling cabin temperature and defrost performance. Designed to OEM specifications, this component ensures precise temperature management and reliable climate control across E420, E430, E300 Diesel, and E55 AMG models. Trust Genuine OEM parts for factory-spec performance and seamless integration with your Mercedes heating system.
Symptoms of a Failing HVAC Heater Control Valve
- No heat or reduced heat output from dashboard vents even at maximum temperature setting
- Inconsistent cabin temperature; heat cycles on and off unpredictably
- Cold coolant flowing through heater core; hoses remain cool to the touch
- Defrost function fails to clear windshield and windows
- Visible coolant leaks near the heater valve assembly under the dashboard
Cross Reference Numbers
This Genuine OEM 0018307884 is equivalent to or replaces the following part numbers: 001830788400188307884.
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.
- Mercedes-Benz E420 4.2 V8 Gas (W210): 1997
- Mercedes-Benz E430 4.3 V8 Gas (W210): 1998–1999
- Mercedes-Benz E300 3.0 L6 Diesel (W210): 1999
- Mercedes-Benz E55 AMG 5.5 V8 Gas (W210): 1999
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.
- 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 Fit™: Complete repair solutions with no guesswork.
- Established Trust: Serving the European car community since 2000.
Frequently Asked Questions
How do I know if my Mercedes-Benz W210 E-Class heater control valve needs replacement?
The most common sign is a complete loss of heat output despite the temperature dial set to maximum. You may also notice that the heater hoses under the dashboard feel cold even when the engine is warm, or the defrost function fails to work. If you hear the blower motor running but feel no warm air, the valve is likely stuck closed.
What is the difference between this Genuine OEM part and aftermarket alternatives?
Genuine OEM parts are manufactured to Mercedes-Benz factory specifications and undergo rigorous quality control. They integrate seamlessly with your vehicle's climate control system and carry the confidence of factory engineering. Aftermarket valves may vary in tolerances and material composition, potentially affecting heater response and longevity.
Can I replace the heater control valve myself, or do I need a technician?
Heater valve replacement typically requires removing trim panels beneath the dashboard and accessing the heater assembly. You will need basic hand tools, a torque wrench, and a coolant drain pan. Many DIY enthusiasts complete this job, though access varies by model year. Consult your service manual for exact location and procedure. If you are uncomfortable working with coolant systems, professional installation is recommended.
Will I need to drain the cooling system to replace this valve?
Yes. You must drain at least a portion of the coolant system to safely disconnect the heater hoses from the valve. Refer to your Mercedes service manual for the correct drain procedure and refill capacity. Always use genuine Mercedes coolant or an approved equivalent, and bleed the system of air after refilling to prevent heat loss and overheating.
What other components should I inspect when replacing the heater valve?
While the valve is out, inspect the heater hoses for cracks, splits, or hardening. Check hose clamps for corrosion or looseness. Examine the heater core mounting area for coolant stains, which may indicate a leaking core. If the heater core is clogged or damaged, it will need replacement as well. A complete heater system inspection ensures you address all climate control issues at once.
Is this valve compatible with both the standard and AMG variants of the W210 E-Class?
Yes. This Genuine OEM 0018307884 is designed for all W210 E-Class variants, including the E420, E430, E300 Diesel, and E55 AMG. The heater control valve is shared across the generation regardless of engine or performance level, so fitment is universal within the W210 chassis.
Order Genuine OEM 0018307884 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 Mercedes-Benz.
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
- MPN0018307884
- Part TypeHVAC Heater Control Valve
- OE Part Numbers001-830-78-84, 0018307884
- Fitment
- Fitment TypeVehicle Specific
| Year | Make | Model | Submodel | Notes |
|---|---|---|---|---|
| 1997 | Mercedes-Benz | E420 | Base (4.2 V8 GAS) | |
| 1998 | Mercedes-Benz | E430 | Base (4.3 V8 GAS) | |
| 1999 | Mercedes-Benz | E300 | Base (3.0 L6 DIESEL) | Notes: E300 models, Recirculating components. |
| 1999 | Mercedes-Benz | E430 | Base (4.3 V8 GAS) | |
| 1999 | Mercedes-Benz | E55 AMG | Base (5.5 V8 GAS) |
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.
