SubZeroParts.com

Check Fit

Check Part Compatibility Help With Existing Order

Business Hours: Monday—Friday, 9:00 AM—5:00 PM ET

Need Help Finding the Correct OEM Part?

Full Name

Email Address

Phone Number

Appliance Model Number

Appliance Serial Number

Part Number or Part Description

Upload Photos

Upload photos of the part, label, model plate, or appliance if available.

By submitting this form, you agree that SubZeroParts.com may contact you about your request and use the information provided to help identify the correct genuine OEM replacement part. We respect your privacy and use your information only to respond to your inquiry, assist with compatibility verification, and provide requested support.

Continue Shopping

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

Sub-Zero

4203370

843.05

The Sub-Zero 4203370 Evaporator/Heat Exchanger Assembly is a genuine OEM 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

Shipping Notice

Customer reviews

Customers come to SubZeroParts.com when they need genuine OEM Sub-Zero and Wolf replacement parts, fast shipping, and help confirming the correct part by model and serial number.

4★

100+ customer reviews Verified independently on Trustpilot

Read verified reviews

★★★★★

Buyers rely on our parts team for genuine OEM replacement parts, hard-to-find inventory, and compatibility support before the order ships.

Parts support customers Sub-Zero & Wolf replacement parts

★★★★★

Need help before ordering? Send us the model number, serial number, part number, and photos so our team can help verify compatibility.

Compatibility help Before you order

★★★★★

Our catalog is built for homeowners, technicians, and service companies looking for original parts for premium appliances.

OEM parts catalog Sub-Zero & Wolf appliances

★★★★★

Order support is available for tracking, shipping questions, damaged items, returns, and post-order compatibility questions.

Customer support Before and after purchase

Reviews are published on Trustpilot and can be verified independently. View SubZeroParts.com on Trustpilot.

PARTS HELP

Frequently Asked Questions

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

Do you sell genuine OEM Sub-Zero, Wolf, and Cove replacement parts?

Yes. SubZeroParts.com focuses on genuine OEM replacement parts for Sub-Zero, Wolf, and Cove appliances. Our catalog includes parts for refrigerators, freezers, wine storage units, ice makers, ranges, ovens, cooktops, ventilation products, and other compatible appliance models.

How do I know if a part fits my appliance?

The best way to confirm fit is to check your appliance model number and serial number before ordering. Many Sub-Zero, Wolf, and Cove parts change by serial range, production version, or model variation. If you are not sure, use the Check Fit form and send us your model number, serial number, part number, and photos if available.

Why is the serial number important when ordering appliance parts?

A serial number can determine whether your appliance uses the current part number, an earlier version, or a different service replacement. Two appliances with the same model number may require different parts depending on the production range. Checking the serial number helps reduce incorrect orders, delays, and unnecessary returns.

Can you help me identify the correct part before I order?

Yes. If you are not 100% sure which part fits your appliance, send us your 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 details and help you identify the correct compatible replacement part.

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

Yes. We ship replacement parts to customers across the United States. Shipping options, delivery time, and availability may vary depending on the part, destination, carrier service, and current inventory status. Some 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 depends on the item condition, product type, timing, and our return policy. Before ordering, we strongly recommend verifying compatibility by model and serial number. Electrical parts, installed parts, special-order items, or opened items may have restrictions. Please review the return policy before submitting a return request.

Are Sub-Zero and Wolf part numbers always the same as previous numbers?

Not always. Many OEM parts have current part numbers, previous numbers, replacement numbers, or service kit numbers. A previous number may be replaced by a newer part, but compatibility still depends on the appliance model and serial number. Product pages on SubZeroParts.com list current and previous numbers whenever available.

Looking for another part?

Return to the Sub-Zero & Wolf Parts Catalog

Browse our main catalog of genuine OEM Sub-Zero and Wolf replacement parts. Not sure which part fits? We can help verify compatibility by model number, serial number, part number, and photos.

Genuine OEM parts
Large parts catalog
Compatibility help available

Search Parts Catalog

Your Parts Order

Complete Your Order with Confidence

Please enter your details below to finalize your order. We specialize in genuine Sub-Zero, Wolf & Cove replacement parts and can help verify compatibility before shipment using your model and serial number.

Not sure this is the correct part? Contact our team before placing your order — we’ll be happy to help.

Customer Support:
Info@subzeroparts.com
Monday–Friday, 9:00 AM–5:00 PM ET

Name

Company (optional)

Your phone

Country

Street address

Address Line 2

City

State

Province / State / Region

ZIP Code

Shipping Options

We partner with trusted carriers such as USPS, UPS and FedEx. Choose the option that best suits your needs: (* Prices are valid for the USA only. International shipping is calculated individually).

Standard (5-7 business days) -14$

Priority (3-5 business days) - 23$

Express (2-3 business days) - 45$

I confirm that all the information provided is correct

Appliance Model Number

Example: BI-48SID/O, 650, 736TCI, DF366, GR366

Appliance Serial Number

Located on the appliance rating plate

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.

It seems like you're unsure about the model or serial number. To ensure you receive the correct part, we strongly recommend verifying this information before placing your order. You can find the serial number on your appliance using our guide jump to the manual. If you need further assistance, please contact us, and our team will help you find the correct part for your Sub-Zero appliance.

Order Notes (optional)

Add any special notes about your order, appliance, part, shipping address, or compatibility request.

Promo code

Secure Payment, Fast Processing & Compatibility Support

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 once your order ships.

To help you order with confidence, please verify your model number, serial number, and part number before placing the order. If you are unsure whether this part fits your appliance, contact our team before shipment and we can help review compatibility.

Most unused parts in original manufacturer packaging may be returned within 30 days. Some 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.

Made on

Tilda