Whirlpool Refrigerator In-Line Water Filter 4378411RB, Replaces 4378411, R0183114, 4210508, 4210359, 4210573

Factory Certified Whirlpool accessory refrigerator in-line water filter for refrigerators with an automatic ice maker or water dispenser, including refrigerators without a built-in filter. Uses push-in fittings for 1/4-inch copper or plastic water lines and is recommended for replacement every 6 months. The filter reduces contaminants affecting water taste and ice clarity, including chlorine, lead, rust, dirt, sand, and sediment.

Is This the Right Part?

Common Symptoms

• Chlorine taste or odor in dispensed water
• Less clear-tasting or lower-quality ice
• Reduced water flow may occur when the inline filter or tubing becomes restricted
• Water leakage at a connection may occur if tubing is not fully seated or the connection is damaged

Check Before Replacing

• Check the filter replacement date; Whirlpool recommends replacement every 6 months for optimal performance.
• Confirm that the refrigerator water line is 1/4-inch copper or plastic tubing and that the filter’s flow-direction arrow points toward the refrigerator.
• With the water supply turned on, visually inspect both push-in connections for leakage; do not disassemble a pressurized connection.
• If water taste is the concern, flush the newly installed filter into a bucket or pan until the water runs clear, as directed by Whirlpool.
• If flow is poor, check for kinks or obvious restrictions in the accessible tubing before concluding that the filter is defective.

Pro Tip

Part Details

Key Features

• Whirlpool Factory Certified Accessory
• Inline refrigerator ice-and-water filter
• Push-in fittings for 1/4-inch copper or plastic water lines
• Designed to improve drinking-water taste and ice clarity
• NSF/ANSI Standard 42 filtration claim documented by the archived source
• Recommended six-month replacement interval

Installation Notes

• Shut off the water supply before replacing or installing the filter.
• Use only 1/4-inch copper or plastic tubing and ensure the tubing ends are square, round, and burr-free.
• Follow the filter’s flow-direction arrow when identifying the inlet and outlet.
• Insert the tubing fully into the filter fittings; Whirlpool’s instruction sheet specifies approximately 5/8 inch of insertion at the inlet.
• Do not use wicking or pipe-dope sealer on connections entering the filter head.
• Flush the filter into a bucket or pan until the water is clear before connecting the outlet to the refrigerator supply line or returning the appliance to service? Actually manual says connect outlet after flushing; preserve exact safe note.

Verified Compatible Models

106.8611610, ED19TKXMWR1

Fitment reminder: Match the complete appliance model number, including suffix or revision where applicable, before ordering.