This repair guide will help you fix your garbage disposal.
Need a Replacement Garbage Disposal?
Price: $114.00
Disclosure: As an Amazon Associate, we earn from qualifying purchases. This means if you click on an affiliate link and make a purchase, we may receive a small commission at no additional cost to you. This helps support our site and allows us to continue providing free repair guides.
Common Symptoms & Causes
The following symptoms typically point to a failing or improperly seated mounting assembly on the Waste King L-8000.
🔨 Pro Tip from Dave
On the L-8000, the 3-bolt mounting assembly uses Waste King’s proprietary snap-ring system, and a common mistake I see is technicians forgetting to fully reseat the snap ring into its groove after replacing the flange gasket — this causes the unit to sit unevenly and leak immediately after reinstallation. Also check part number WK-812801 (the fiber gasket/sink flange seal), as this specific gasket hardens and shrinks faster than competitors due to the L-8000’s higher operating temperature.
- Water pooling directly under the sink drain opening after running the disposal
- Visible dripping from the metal sink flange or mounting ring area
- The disposal unit wobbles or shifts slightly when touched
- A musty odor near the sink cabinet caused by persistent slow leaking
These issues are most commonly caused by deteriorated plumber’s putty around the sink flange, a worn or cracked mounting gasket, or loose snap ring components that have shifted over time with regular use.
How Much Does This Repair Cost?
Replacing the mounting assembly on a Waste King L-8000 typically costs $15–$40 in parts when done yourself. A professional plumber or appliance technician will usually charge $150–$300 for a service call covering parts and labor. Tackling this repair yourself can save you over $100 while restoring your garbage disposal to full working order.
Frequently Asked Questions
How do I know if the mounting assembly is causing the leak on my Waste King L-8000?
If water is dripping from directly beneath the sink flange where the disposal meets the drain, the mounting assembly is likely the culprit. Check for loosened mounting bolts or deteriorated plumber’s putty around the sink flange.
Do I need to remove the entire disposal to fix the mounting assembly leak?
Yes, you will need to detach the Waste King L-8000 from the mounting ring to access and reseal the flange properly. The unit twists off the mounting assembly with a simple counterclockwise turn.
What materials do I need to repair the mounting assembly leak?
You’ll need plumber’s putty, a screwdriver, and a wrench to complete this repair. Having a replacement snap ring on hand is also recommended in case the existing one is worn or damaged.
Recommended Products
These are the parts and tools we recommend for this repair, based on compatibility and customer reviews:
- WQAPVHBG Garbage Disposal Flange Kit, 5.1 x 2.6in Garbage Disposal Drain Kit, Stainless and Plastic Garbage Disposal Sink Flange Replacement for Waste King EZ Mount Parts, 110mm
- WASTE KING L-111
- Waste King EZ Mount Garbage Disposal Sink Flange Kit
- 8Pcs/Set Garbage Disposal Mount Sink Flange Kit and Stopper for Waste King, Garbage Disposal Drain Assembly Kit, Rubber Flange and Drain Lock Nut for Waste King, Whirlaway Parts (114mm) Model : 1030
As an Amazon Associate, I earn from qualifying purchases.
The Flange Kit That Stops L-8000 Leaks at the Source
When water pools under your sink right where the disposal connects, you’re almost always looking at a failed gasket or loose mounting ring. This is the exact kit I reach for on L-8000 units because it includes everything you need to reseat the assembly and stop the leak for good.
What works
- The gasket material is thicker and more durable than the original Waste King seal—I’ve seen these hold up longer than OEM replacements on repeat jobs.
- Stainless steel components resist corrosion better than plastic-heavy alternatives, especially important in kitchens where mineral deposits build up fast.
- The kit fits the EZ Mount system on L-8000 models without any adapter hunting—one less trip back to the hardware store.
What doesn’t
- Installation still requires draining the P-trap and having a basin wrench handy—the kit itself doesn’t eliminate the messy part of the job.
- If your mounting ring is cracked or the sink flange itself is damaged, this kit alone won’t fix it—you’ll need to replace the entire assembly.
I once had a homeowner order a whole new disposal when the real problem was just a pinched gasket—this kit would have saved them $200. Before you assume you need a replacement unit, try reseating with fresh gasket materials. WQAPVHBG Garbage Disposal Flange Kit, 5.1 x 2.6in Garbage Disposal Drain Kit, Stainless and Plastic Garbage Disposal Sink Flange Replacement for Waste King EZ Mount Parts, 110mm
WQAPVHBG Garbage Disposal Flange Kit, 5.1 x 2.6in Garbage
I’ve replaced these on repeat jobs and they outlast the original seals every time.
Check Price on Amazon →Before ordering, match the part number to your appliance’s model tag — most “defective” part returns are wrong-model orders.
This post contains affiliate links. As an Amazon Associate, I earn from qualifying purchases at no extra cost to you.
