WP3378134 - Genuine OEM Whirlpool Dishwasher Rinse Aid Dispenser Cap

WP3378134 – Genuine OEM Whirlpool Dishwasher Rinse Aid Dispenser Cap

Maintain optimal dishwasher performance and spotless dishes with the WP3378134 Genuine OEM Whirlpool Dishwasher Rinse Aid Dispenser Cap. This essential component securely seals the rinse aid compartment, preventing leaks and ensuring proper dispensing during each cycle.

Whether your original cap is cracked, missing, or no longer seals tightly, this OEM replacement offers a perfect fit and long-lasting durability. Trust Appliance Kingdom to deliver factory-certified Whirlpool parts that restore your appliance’s full functionality.

Compatibility Information

This OEM Whirlpool rinse aid cap fits many dishwashers from:

• Whirlpool

• Maytag

• KitchenAid

• JennAir

• Amana

Compatible model examples include:

• WDF520PADM7

• WDT750SAHZ0

• MDB4949SHZ0

• KDFE104HPS0

• WDTA50SAKZ0

What the Rinse Aid Dispenser Cap Does

The WP3378134 rinse aid cap securely closes the rinse aid compartment inside the dishwasher door. It prevents detergent leaks, keeps moisture out, and allows proper controlled dispensing of rinse aid during the final rinse cycle—helping eliminate water spots and improve drying performance.

Symptoms of a Faulty or Missing Rinse Aid Cap

• Rinse aid leaking inside or outside the dispenser

• Dishwasher not drying dishes properly

• Cap is visibly cracked, warped, or missing

• Error codes related to rinse aid dispensing (in select models)

• Water spots left on dishes or glassware

Key Features & Benefits

• Genuine OEM Part – Designed and manufactured by Whirlpool for a precise fit

• Improves Drying & Spot-Free Cleaning – Ensures rinse aid is dispensed correctly

• Leak Prevention – Creates a tight seal to avoid waste or moisture entry

• Easy to Install – No tools required, simple twist-on replacement

• Durable Build – High-quality plastic construction resists heat and chemical wear

• Appliance Kingdom Trusted – Backed by expert support and fast shipping

We ship appliance parts across Canada, including to Abbotsford, Airdrie, Barrie, Brampton, Brantford, Burlington, Calgary, Cambridge, Chilliwack, Coquitlam, Dartmouth, Edmonton, Etobicoke, Fort McMurray, Grand Prairie, Guelph, Halifax, Hamilton, Kamloops, Kelowna, Kingston, Kitchener, Langley, Laval, Lethbridge, London (Ontario), Markham, Mississauga, Moncton, Montreal, Nanaimo, Newmarket, North Vancouver, Nova Scotia, Oakville, Oshawa, Ottawa, Peterborough, Pickering, Prince Albert, Red Deer, Regina, Saskatoon, Scarborough, St. John's, Sudbury, Surrey, Thunder Bay, Toronto, Vancouver, Vaughan, Victoria, Waterloo, West Kelowna, Whitby, Windsor and Winnipeg.