OEM vs Aftermarket Water Inlet Valve for LG Washers: Honest Comparison (AJU73213301)

Your LG washer (WT5001CW, WT1801HWA, or any of the 30+ compatible models) won't fill with water, or worse — it's leaking all over your laundry room floor. You've diagnosed it down to the water inlet valve. Now you're staring at two options: a $200+ OEM valve from LG or this $116.99 aftermarket replacement. Let's cut through the marketing and talk real numbers.

I've replaced dozens of these valves. The price gap is real, but so are the differences. Here's what you actually need to know.

Quick Answer

For most DIY repairs, the aftermarket AJU73213301 delivers identical performance at nearly half the cost. The OEM valve offers marginal advantages in warranty coverage and maybe — maybe — an extra year of service life. Unless you're repairing a washer under manufacturer warranty or planning to sell the unit immediately, aftermarket makes financial sense.

Side-by-Side Comparison

When OEM Makes Sense

There are legitimate scenarios where spending double makes sense:

Your washer is still under LG's manufacturer warranty. Using an aftermarket part voids coverage. If you've got 6 months left on a factory warranty, bite the bullet and use OEM — you're protecting a bigger investment.

You're flipping the appliance for resale. Some buyers fixate on "all original parts." If you're selling a nearly-new WT5680HWA and want to maximize resale value, OEM provides peace of mind to picky buyers.

You need exact aesthetic matching. The OEM valve has LG's branding and connector colors that match factory photos. For most people this is irrelevant (the valve lives inside the cabinet), but if you're that guy who needs everything perfect, I get it.

When Aftermarket Wins

Here's where the math shifts heavily toward aftermarket:

The washer is 4+ years old. At this point, you're repairing an appliance that's already depreciated. Spending $200 on a valve for a $600 used washer doesn't make sense. The aftermarket valve solves the same problems — slow filling, leaking, no hot or cold water — for $80 less.

You're a DIYer managing your own repairs. You already voided any service contract by opening the cabinet. The aftermarket valve includes the same solenoid assembly, the same pressure rating, and the same electrical specs. I've installed both side-by-side in WT1701CW units — zero performance difference.

You need the part fast. LG dealers often special-order these valves. If you're dealing with a leaking valve that's flooding your laundry room (common failure mode for AJU73213301), waiting a week isn't an option. Heima ships same-day.

The warranty is actually better. This surprised me too. LG's OEM warranty covers 90 days, parts only — you're paying labor if it fails. Heima's aftermarket warranty runs 365 days with full replacement. That's four times the coverage period.

The Real-World Durability Question

Let's address the elephant in the room: "Will the aftermarket valve last as long?"

Honestly? Probably not quite as long. OEM valves might give you 8–10 years if you're lucky. Quality aftermarket valves typically deliver 6–8 years. But here's the thing — the original valve in your WT4870CW or WT5270CW already failed, often in 5–7 years. You're not chasing a 15-year lifespan here.

Water inlet valve failure is caused by mineral buildup, solenoid wear, and pressure cycling — factors that affect both OEM and aftermarket equally. The critical component is the solenoid coil, and reputable aftermarket manufacturers source similar-spec coils.

Our Recommendation: For washers older than 3 years or out of warranty, choose the aftermarket AJU73213301. You'll save $80–$110, get faster shipping, and receive four times the warranty coverage. The performance difference is negligible, and you can replace the valve twice for the cost of one OEM part.

Installation Reality Check

Both valves install identically. You're looking at:

• Disconnecting power and water supply (critical safety step)
• Accessing the back panel of your LG top-loader
• Removing two hose connections and the electrical harness
• Swapping the mounting bracket
• Reconnecting everything and testing for leaks

Total time: 20–30 minutes if you've done appliance repairs before, maybe 45 minutes if this is your first valve replacement. The installation notes are the same regardless of which valve you choose — disconnect power and water first, period.

The Compatible Models Factor

This valve works across an impressive range: WT1101CW, WT1201CW, WT1501CW, WT1801HVA, WT4901CW, WT5101HV, WT5680HVA, and 40+ other LG and Kenmore models. Both OEM and aftermarket versions fit the same units because they're reverse-engineered to factory specs.

One advantage of aftermarket: the part number cross-references. This valve replaces AJU75152601, 5221EA1008F, AP6308239, and TAW35618287. If you're sourcing from multiple suppliers, having broader compatibility numbers helps.

Frequently Asked Questions

Will Using an Aftermarket Valve Void My LG Warranty?

If your washer is still under LG's manufacturer warranty, yes — using non-OEM parts can void coverage for related failures. However, if your warranty expired (typically 1 year on parts, 2–5 years on the drum), this isn't a concern. The vast majority of WT-series washers needing valve replacement are well past warranty.

How Do I Know If My Inlet Valve Is Actually Bad?

Three telltale symptoms: the washer won't fill with water (or fills extremely slowly), you're getting no hot or cold water despite correct settings, or you see water leaking from the back panel connections. You can test the valve with a multimeter — the solenoid coils should read 500–1500 ohms. If you're getting infinite resistance or seeing visible corrosion on the solenoid terminals, it's time to replace.

Can I Mix OEM and Aftermarket Parts in the Same Repair?

Absolutely. I've done repairs on WT5001CW units where we used an aftermarket inlet valve alongside an OEM drain pump. Parts don't "know" what's original and what's replacement. As long as the electrical specs and physical mounting match, you're fine. The washer's control board doesn't care about part branding — it just sends voltage signals to solenoids.