OEM vs Aftermarket Upper Rack Track Stop for Whirlpool: Honest Comparison (W10508950)

You're standing in your kitchen, staring at your Whirlpool dishwasher's upper rack that just flew off the track mid-pull. The little plastic stop piece—W10508950—broke clean off. Now you're deciding: drop $25+ on the Whirlpool OEM part with a week's wait, or get an aftermarket one for $9.99 that ships tomorrow?

I've replaced dozens of these track stops across Whirlpool, Maytag, and KitchenAid dishwashers over 20 years. Let's break down what you're actually getting with each option.

Quick Answer

The aftermarket W10508950 is identical in function and durability for 60% less. Unless you're inside a warranty period where Whirlpool requires OEM parts, the aftermarket version saves you real money with zero performance trade-off. It clips in exactly the same way—no install headaches.

Side-by-Side Comparison

When OEM Makes Sense

If your dishwasher is still under manufacturer warranty, stick with OEM. Whirlpool service techs won't honor warranty claims if they spot aftermarket parts during a service call. That's the reality.

Also, if you're in a rural area where returns are a hassle and you want the absolute safest bet, OEM gives you that peace of mind—even if you're overpaying for plastic that does the exact same job.

Some folks just prefer the Whirlpool logo on the part. It's a psychological thing, and that's fine. If the extra $15–$20 doesn't matter to you, go OEM.

When Aftermarket Wins

For out-of-warranty dishwashers—which is most of them after year two—aftermarket is the smarter call. One user reported: "Got it quickly. No install problems and it works great." Another noted: "Clipped part into track on each side of top rack." That's it. Two clips, 30 seconds, done.

The aftermarket W10508950 uses the same ABS plastic formula. It's not a cheap knockoff—it's manufactured to OEM specifications. The reason it costs less? No Whirlpool branding markup, no appliance store middleman taking a cut.

Delivery speed matters when your dishwasher's upper rack is literally unusable. Waiting 7–10 days for an OEM part means hand-washing dishes for over a week. The aftermarket version ships fast, often arriving in 1–3 days.

Plus, you get a full year warranty versus the typical 90-day OEM retailer warranty. If it fails (rare), you're covered longer.

Our Verdict

Unless you're in warranty or have money to burn, buy the aftermarket W10508950. It's the same part without the logo, costs 60% less, ships faster, and comes with a better warranty. I've installed both—there's zero functional difference. Save the $15–$20 for something that actually matters.

Frequently Asked Questions

Will the aftermarket W10508950 fit my Maytag dishwasher?

Yes. This part works across Whirlpool, Maytag, KitchenAid, and Kenmore dishwashers. Check your model number against the compatibility list—models like MDB7749AWB1, MDB7609AWW0, and dozens of WDT/WDTA models use this exact stop.

How do I install the upper rack track stop?

You clip it into the track on each side of the top rack. No tools needed. Pull the rack out slightly, snap the stop into the track slot, and push the rack back in. Takes under a minute per side.

What causes these track stops to break?

Over time, repeatedly pulling the rack in and out wears down the plastic. Sometimes people yank the rack too hard when it's stuck, snapping the stop clean off. It's a normal wear item—expect to replace it every 5–7 years on a heavily-used dishwasher.