0
items
Your cart is empty
Subtotal:$0.00
:
from
to
Clear
Clear
 |
Genuine OEM 64118375443 - HVAC Heater Control Valve
Product Overview
This Genuine OEM 64118375443 HVAC heater control valve is designed for BMW 318ti and Z3 models from 1995 to 2000. The heater control valve regulates coolant flow to the cabin heater core, enabling precise temperature management in the climate control system. As an OEM-specification component, this valve matches factory performance and durability standards, making it the ideal choice for maintaining your BMW's heating system.
Symptoms of a Failing HVAC Heater Control Valve
- Reduced or no heat output from cabin vents despite engine warmth
- Coolant leaking from the heater control valve area under the dashboard
- Inconsistent cabin temperature; heat cycles on and off unexpectedly
- Sweet-smelling coolant odor inside the vehicle cabin
- Coolant level dropping without visible external leaks
- Dashboard or floor mats wet on the passenger side
Cross Reference Numbers
This Genuine OEM 64118375443 is equivalent to or replaces the following part numbers: 64-11-8-375-443, 64118375443.
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.
- BMW 318ti Base 1.8 L4 Gas (E36): 1995
- BMW 318ti Base 1.9 L4 Gas (E36): 1996
- BMW Z3 Roadster 1.9 L4 Gas (E36/7): 1996–1997
- BMW Z3 Roadster 2.8 L6 Gas (E36/7): 1997–1998
- BMW Z3 Roadster 2.5 L6 Gas (E85): 1999–2000
- BMW Z3 Roadster 2.8 L6 Gas (E85): 1999–2000
- BMW Z3 Coupe 2.8 L6 Gas (E85): 1999–2000
- BMW Z3 M Roadster 3.2 L6 Gas (E36/7, E85): 1998–2000
- BMW Z3 M Coupe 3.2 L6 Gas (E85): 1999–2000
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 Fitâ„¢: Complete repair solutions with no guesswork.
- Established Trust: Serving the European car community since 2000.
Frequently Asked Questions
How do I know if my BMW 318ti or Z3 needs a new heater control valve?
The most common sign is loss of cabin heat despite the engine running warm. You may also notice coolant leaking under the dashboard, a sweet smell in the cabin, or coolant level drops without visible external leaks. If your heater works intermittently or only blows cold air when it should be warm, the valve may be stuck or failing.
What is the difference between a heater control valve and a thermostat?
The thermostat regulates overall engine coolant temperature by controlling flow through the engine block and radiator. The heater control valve is downstream and controls only the flow of hot coolant to the cabin heater core. A failing valve affects cabin comfort; a failing thermostat affects engine temperature management.
Can I replace the heater control valve myself, or do I need a professional?
Replacing a heater control valve requires draining some coolant, removing dashboard trim to access the valve under the dash, and reconnecting coolant hoses. Most DIY enthusiasts with basic tools and mechanical confidence can perform this repair. However, if you are unfamiliar with coolant system work, a professional technician can complete the job safely and verify proper operation.
Why is the heater control valve leaking coolant?
Heater control valves are prone to internal seal degradation over time, especially in vehicles with aging coolant or mineral buildup. External leaks typically occur at the hose connections or the valve body seams. Once a valve begins to leak, replacement is the most reliable solution; repair or resealing is not practical for this component.
Is this a Genuine BMW part or an aftermarket equivalent?
This is a Genuine OEM part manufactured to BMW factory specifications. It carries the same quality and durability standards as parts installed on BMW vehicles at the factory, and it is compatible with dealership warranty requirements and service records.
What coolant should I use when replacing the heater control valve?
Refer to your BMW service manual or owner's manual for the correct coolant type and specification. BMW vehicles typically require specific coolant formulations. Always use the manufacturer-recommended coolant to prevent corrosion, seal degradation, and system performance issues.
Order Genuine OEM 64118375443 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 BMW.
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
- MPN64118375443
- Part TypeHVAC Heater Control Valve
- OE Part Numbers64-11-8-375-443, 64118375443
- Fitment
- Fitment TypeVehicle Specific
| Year | Make | Model | Submodel | Notes |
|---|---|---|---|---|
| 1995 | BMW | 318ti | Base (1.8 L4 GAS) | |
| 1999 | BMW | Z3 | Coupe (2.8 L6 GAS) | |
| 1999 | BMW | Z3 | M Coupe (3.2 L6 GAS) | |
| 1999 | BMW | Z3 | Roadster (2.5 L6 GAS) | |
| 1999 | BMW | Z3 | Roadster (2.8 L6 GAS) | |
| 1999 | BMW | Z3 | M Roadster (3.2 L6 GAS) | |
| 2000 | BMW | Z3 | Roadster (2.8 L6 GAS) | |
| 2000 | BMW | Z3 | Roadster (2.5 L6 GAS) | |
| 2000 | BMW | Z3 | M Roadster (3.2 L6 GAS) | |
| 2000 | BMW | Z3 | M Coupe (3.2 L6 GAS) | |
| 2000 | BMW | Z3 | Coupe (2.8 L6 GAS) | |
| 1998 | BMW | Z3 | M Roadster (3.2 L6 GAS) | |
| 1998 | BMW | Z3 | Roadster (1.9 L4 GAS) | |
| 1998 | BMW | Z3 | Roadster (2.8 L6 GAS) | |
| 1996 | BMW | Z3 | Roadster (1.9 L4 GAS) | |
| 1996 | BMW | 318ti | Base (1.9 L4 GAS) | |
| 1997 | BMW | Z3 | Roadster (2.8 L6 GAS) | |
| 1997 | BMW | Z3 | Roadster (1.9 L4 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.
