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Sub-Zero 4203370 Evaporator/Heat Exchanger Assembly – for 700BR and 700BR-2

Sub-Zero

4203370

843.05

The Sub-Zero 4203370 Evaporator/Heat Exchanger Assembly is a replacement designed for use in the 700BR and 700BR-2 refrigeration units. This assembly is essential for maintaining the cooling efficiency and performance of your Sub-Zero appliance.

This part is only compatible with units starting from serial number M1112040. It combines the evaporator coil and heat exchange components into a single unit, ensuring efficient temperature regulation and system performance.

If your unit’s serial number is earlier than M1112040, this part will not fit — please contact us for assistance in locating the correct part for your model.

Package weight (lbs): 9

Package dimensions: 22x18x10

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Frequently Asked Questions

Find clear answers about Sub-Zero, Wolf, and Cove replacement parts, checking compatibility, shipping, returns, and order support before you place an order.

Do you sell replacement parts for Sub-Zero, Wolf, and Cove appliances?

SubZeroParts.com offers replacement parts for Sub-Zero, Wolf, and Cove appliances, including refrigerators, freezers, wine storage units, ice makers, ranges, ovens, cooktops, and ventilation products. Compatibility should be confirmed using the appliance model number and serial number before ordering.

How do I check whether a part may fit my appliance?

Check the appliance model number and serial number before ordering. Part applicability can vary by serial range, production version, and model variation. If you are unsure, use the Check Fit form and send the model number, serial number, part number, and photos if available.

Why is the serial number important when ordering appliance parts?

The serial number can help distinguish between parts listed for different production ranges or model variations. Two appliances with the same model number may use different parts. Checking both the model number and serial number can reduce incorrect orders, delays, and unnecessary returns.

Can you help me review which part may apply to my appliance?

Yes. If you are unsure which part may apply to your appliance, send the appliance details through the Check Fit form. Include the model number, serial number, part number if known, and clear photos of the part or rating plate. Our team will review the information and help narrow down the available options. Compatibility should be confirmed before ordering.

Do you ship Sub-Zero and Wolf replacement parts across the United States?

We ship replacement parts to addresses across the United States. Shipping options and delivery times may vary by item, destination, carrier service, and current availability. Large, fragile, or special-order items may require additional handling time.

What should I do if I already placed an order and need help?

If you already placed an order, use the Order Help form and include your order number, email address, and a short description of the issue. We can help with order status, tracking, shipping questions, returns, damaged items, wrong items, or compatibility questions related to your order.

Can I return a part if it does not fit?

Return eligibility is governed by the current return policy and may depend on item condition, product type, timing, and whether the item has been opened or installed. Check compatibility by model number and serial number before ordering. Review the return policy before submitting a return request.

Why can a part listing show more than one part number?

A listing may include current, previous, or related reference numbers. A number shown on an older part or document does not by itself confirm compatibility. Check the appliance model number, serial number, and product-page details before ordering.

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Please enter your details below to complete your order. We offer replacement parts for Sub-Zero and Wolf appliances and can review compatibility information before shipment using the model number, serial number, and part number you provide.

Not sure whether a part may apply to your appliance? Contact our team before placing your order.

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We may ship through USPS, UPS, or FedEx depending on the order and destination. Listed rates apply to eligible U.S. orders. International shipping is calculated separately.

Standard (5-7 business days) -14$

Priority (3-5 business days) - 23$

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Sub-Zero and Wolf parts may vary by exact model, serial number range, and production version. Providing your model and serial number helps us review compatibility before shipment when possible.

I confirm that I have verified the model and serial number for compatibility.

Please verify the appliance model and serial number before placing your order. Compatibility may depend on the exact model, serial-number range, and production version. Open our serial-number guide or contact us for help reviewing the available information.

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After placing your order, you will receive a confirmation email with your order details. Most orders are processed within 1–2 business days according to our Shipping Policy. Tracking information will be provided after the order ships.

Please review the appliance model number, serial number, and part number before placing the order. If you are unsure whether a part may apply to your appliance, contact our team before shipment and we can review the information provided.

Most eligible unused parts in manufacturer packaging may be returned within 30 days. Electronic, installed, opened, special-order, discontinued, or non-stock parts may have limited return eligibility. Shipping charges may be non-refundable unless the return is due to our confirmed error.

By placing your order, you agree to our Return Policy, Shipping Policy, and Terms of Service.

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