OEM vs Aftermarket Washer Motor Run Capacitor for Whirlpool: Honest Comparison (W11395618)

Your Whirlpool WTW5000DW won't spin, just hums when it tries. You've diagnosed it down to the motor run capacitor — part number W11395618. Now you're staring at two browser tabs: one showing the OEM Whirlpool part for $140–$180, the other showing aftermarket options around $80. That's a $60–$100 difference for what looks like the same cylindrical component.

Let's break down what you're actually getting with each option.

Quick Answer

For a motor run capacitor, aftermarket is the smarter choice for most DIYers. These are commodity electrical components with standardized specs (microfarads and voltage ratings). Unless you're repairing under warranty or flipping the washer for resale, the OEM premium doesn't buy you meaningful performance gains.

Side-by-Side Comparison

When OEM Makes Sense

There are legitimate scenarios where paying double is justified:

• Active manufacturer warranty: If your WTW4950HW1 is still under the original Whirlpool warranty, using OEM parts keeps that coverage intact. An aftermarket capacitor voids most factory warranties.
• Commercial laundromat equipment: When you're running WTW5800BW0 units 12 hours daily, some owners prefer the paper trail OEM parts provide for insurance and business accounting.
• Resale within 6 months: Flipping appliances? Buyers sometimes check for OEM stickers during inspection. It's perception value, not performance.
• Procurement department rules: Property management companies often have policies requiring OEM parts for liability reasons, even when it's not technically necessary.

When Aftermarket Wins

For most home repairs, aftermarket delivers identical results at half the cost:

The electrical reality: A run capacitor is a simple component — it stores and releases electrical charge to help the motor start under load. The critical specs are microfarad rating (μF) and voltage tolerance. If those match, the capacitor performs identically whether it has a Whirlpool logo or not.

Faster repairs: OEM parts often ship from regional Whirlpool distribution centers with 3–5 day lead times. Aftermarket suppliers stock high-demand parts like W11395618 locally, getting your washer running this week instead of next.

Better warranty: Here's the kicker — many aftermarket suppliers offer 12-month warranties versus Whirlpool's typical 90-day coverage on capacitors. You're getting more protection for less money.

Compatible across models: This capacitor works in dozens of Whirlpool, Maytag, and Kenmore models (WTW4850HW1, WTW5100HC1, WTW4655JW0). Aftermarket parts clearly list all compatible model numbers, while OEM packaging sometimes only shows the original part number it replaces.

The Installation Reality

One honest difference: OEM capacitors sometimes come with the exact wire harness connector pre-attached. Aftermarket versions may require you to transfer the spade terminals from your old capacitor. This adds 2 minutes to the job — you're pulling off two push-on connectors and moving them to the new part.

If you've never done this, it sounds scarier than it is. Discharge the old capacitor first (short the terminals with an insulated screwdriver), then wiggle the connectors straight off. They only fit one way on the new capacitor.

Our Verdict

Save the $60–$100 and go aftermarket unless you're dealing with warranty constraints or corporate procurement policies. A motor run capacitor isn't like a complex control board where firmware matters — it's a standardized electrical component. The aftermarket W11395618 delivers identical spin performance in your WTW5000DW2 at nearly half the OEM price, often with better warranty coverage and faster shipping.

Use the savings to buy a multimeter if you don't own one yet. Being able to test capacitors yourself prevents unnecessary part replacements down the road.

Frequently Asked Questions

Will an aftermarket capacitor void my Whirlpool warranty?

Yes, if your washer is still under the manufacturer's warranty. However, most washer warranties expire after 1–2 years, and capacitors typically fail after 5–8 years of use. By the time you need this part, your warranty has likely already expired. Check your purchase date before ordering.

How do I know if the aftermarket capacitor matches the electrical specs?

Check the label on your old capacitor for the microfarad (μF) rating and voltage. The replacement must match these exactly. The W11395618 aftermarket version lists all electrical specifications in the product description — compare them before purchasing. If the μF rating is even slightly off, the motor won't run correctly.

Can I upgrade to a higher-quality capacitor than OEM?

Not really — you need to match the original specs precisely. A "better" capacitor with different ratings will cause motor performance issues or failure. However, you can look for capacitors with higher temperature ratings (105°C vs 85°C) if you live in a hot climate or keep your washer in a garage. This extends lifespan but doesn't change performance.