WP12722803B - Genuine OEM Whirlpool Refrigerator Door Mullion Rail, Black

WP12722803B – Genuine OEM Whirlpool Refrigerator Door Mullion Rail, Black

The WP12722803B Genuine OEM Whirlpool Refrigerator Door Mullion Rail, Black is an original manufacturer replacement part designed for select Whirlpool French door refrigerators and compatible brands. Also commonly referred to as a door mullion, flipper assembly, or door mullion cover, this genuine OEM component creates an airtight seal between the refrigerator doors, helping maintain proper cooling efficiency and consistent internal temperatures. Appliance Kingdom proudly supplies this genuine OEM part with fast Canada-wide shipping for homeowners, landlords, and professional appliance repair technicians. This replacement commonly resolves issues related to poor door sealing, warm refrigerator temperatures, and air leaks.

What Does the Refrigerator Door Mullion Rail Do?

The door mullion rail is mounted on one of the French refrigerator doors and pivots into position when the doors are closed. Its primary function is to create a proper seal between both refrigerator doors, preventing cold air from escaping while helping maintain energy efficiency and stable food storage temperatures.

Because this component is opened and closed every time the refrigerator doors are used, it experiences regular wear over time. A genuine OEM Whirlpool mullion rail is manufactured to precise factory specifications, ensuring smooth operation, correct alignment, dependable sealing performance, and long-lasting durability. A damaged or worn mullion rail can allow warm air to enter the refrigerator, forcing the compressor to work harder and potentially affecting food preservation.

Common Symptoms Indicating Replacement

If your refrigerator is experiencing any of the following problems, the door mullion rail may need replacement:

• Refrigerator door does not seal properly
• Warm air entering the fresh food compartment
• Refrigerator running warmer than normal
• Visible damage or cracking on the mullion rail
• Flipper assembly not rotating or closing correctly
• Moisture or condensation forming between the doors
• Increased compressor run time due to air leakage
• Refrigerator doors difficult to close completely
• Excessive frost or cooling inefficiency caused by poor door sealing

Replacing a damaged mullion rail often restores the proper door seal and improves cooling performance when the component has been confirmed as the source of the issue. Similar symptoms may also result from worn door gaskets, hinge problems, or door alignment issues, so proper diagnosis is recommended.

Compatibility Guidance

This part is designed for use with compatible Whirlpool French door refrigerators and is also used on select models from brands including KitchenAid, Maytag, Jenn-Air, Amana, Inglis, Magic Chef, Admiral, Estate, Crosley, Kenmore, Roper, and others manufactured by Whirlpool.

Before ordering:

• Verify your refrigerator model number.
• Confirm that WP12722803B is listed for your appliance.
• Contact Appliance Kingdom if you need assistance confirming compatibility.

Verifying your model number before ordering helps ensure the correct fit and avoids unnecessary returns.

Replaces Part Numbers

Verified manufacturer and authorized supplier information confirms this part replaces:

• 12722803B
• 12722803BN
• 12722803BKV
• 12732501B
• 67003264
• 67004131
• 8208250
• AP6005547

Key Features & Benefits

• Genuine OEM Whirlpool replacement part
• Black finish to match the original appliance design
• Creates a secure airtight seal between French refrigerator doors
• Precision-engineered for reliable fit and smooth operation
• Manufactured to Whirlpool factory specifications
• Helps improve cooling efficiency and reduce energy loss
• Durable construction for long service life
• Ideal for homeowners, landlords, maintenance professionals, and appliance repair technicians

Installation Overview

Replacing the refrigerator door mullion rail is generally considered a moderate repair. The installation typically involves removing the existing mullion assembly from the refrigerator door and installing the new OEM component according to the manufacturer's design.

Many experienced DIY homeowners can complete this repair using basic hand tools. However, professional installation is recommended if door alignment adjustments are required to ensure proper sealing and operation.

Canada-Wide Availability & Trusted Canadian Supplier

Appliance Kingdom proudly supplies genuine OEM and premium appliance replacement parts to customers throughout Canada. Orders ship from Canada, providing fast delivery and dependable service to homeowners, landlords, property managers, and appliance repair professionals nationwide.

Whether you're restoring proper refrigerator door sealing or completing a professional repair, Appliance Kingdom offers trusted OEM parts backed by knowledgeable customer support.

Buyer Confidence & Reassurance

When you purchase the WP12722803B Genuine OEM Whirlpool Refrigerator Door Mullion Rail, Black, you receive:

• Genuine OEM Whirlpool quality
• Engineered for precise fit and dependable performance
• Reliable sealing performance for compatible refrigerator models
• Support to help verify compatibility before ordering
• Fast shipping from a trusted Canadian appliance parts supplier