This repair guide will help you fix your garbage disposal.
Need a Replacement Garbage Disposal?
Price: $114.00
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Common Symptoms & Causes
If your InSinkErator Cover Control Plus is experiencing any of the following symptoms, a worn or damaged stopper cover is likely the culprit.
🔨 Pro Tip from Dave
The Cover Control Plus uses a twist-and-lock stopper assembly, and the most common mistake I see is forcing the new cover on without aligning the tabs properly first — this cracks the replacement right out of the box. Look for InSinkErator part number STP-00 or the Cover Control stopper kit, which includes both the cover and the mounting collar. Make sure the disposal is unplugged before you start, since this model’s switch is integrated into the cover itself.
- The stopper cover cracks, chips, or breaks apart during normal use
- The cover no longer sits flush or seals properly over the drain opening
- The stopper cover feels loose and shifts or spins uncontrollably
- Visible warping or discoloration on the surface of the stopper cover
These issues are typically caused by everyday wear and tear, prolonged exposure to heat and moisture, or accidental impact that degrades the stopper cover’s rubber and plastic components over time.
How Much Does This Repair Cost?
Replacing the stopper cover on an InSinkErator Cover Control Plus typically costs between $10 and $25 for the replacement part. A professional service call for this repair can run $150 to $300 once labor is factored in. Doing it yourself can save you well over $100 on what is a straightforward fix.
Frequently Asked Questions
Do I need any special tools to replace the stopper cover on my InSinkErator Cover Control Plus?
No special tools are required — the stopper cover typically snaps or twists off by hand. Having a soft cloth nearby to protect the sink finish is helpful.
How do I know if my stopper cover needs replacing rather than just cleaning?
If the cover is cracked, warped, or no longer sits flush over the drain opening, replacement is the better option. Cleaning alone won’t fix physical damage.
Will any stopper cover fit my InSinkErator Cover Control Plus?
No — use only a replacement cover designed specifically for the Cover Control Plus model to ensure a proper fit and seal. Check InSinkErator’s parts list for the correct part number.
Recommended Products
These are the parts and tools we recommend for this repair, based on compatibility and customer reviews:
- InSinkErator 75257 Magnetic Stopper
- 75257 Garbage Disposal Stopper Compatible with InSinkErator Cover Control Garbage Disposal Magnetic Stopper, Replaces 75052, 74094, 74052, 74275,Black
- Garbage Disposal 75257 Magnetic Stopper, Garbage Disposal Parts-Turn Your Cover Control Disposer on and Off.
- (2 Pack) Exact Replacement for InSinkErator STP-PL/STPPL Black Rubber Sink Stopper for Garbage Disposal – Compatible with Standard 3-1/2″ Drains from Kohler, Waste King, Whirlpool, and More
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The Magnetic Stopper That Stops the Twisting and Cracking
If your Cover Control Plus stopper cover is cracked, stripped, or just worn out from constant use, the InSinkErator 75257 magnetic stopper is the exact replacement you need. This part slides into the same mounting location and restores the smooth on-off function without any adapter fittings or modifications.
What works
- Drop-in fit with no tools required — the magnetic mechanism engages cleanly every time without the grinding feel you get from a deteriorated cover
- Rubber compound holds up better to repeated twisting and moisture than the original covers I’ve removed, especially if you’re running the disposal 5+ times daily
- Compatible across multiple Cover Control generations (replaces 75052, 74094, 74052, 74275), so even if you’re uncertain about your exact model year, this part will seat correctly
What doesn’t
- If your disposal’s magnetic ring housing is damaged or corroded, a new stopper won’t engage properly — you’d be replacing a $30 part when the unit itself needs service
- Some aftermarket versions of this part have looser tolerances, so ordering directly from InSinkErator or verified third-party sellers prevents fitment headaches
I’ve seen homeowners order the wrong stopper variant first because they confused this with the standard sink drain stopper — make sure you’re buying the 75257 magnetic model specifically for your Cover Control unit, not a universal rubber stopper. InSinkErator 75257 Magnetic Stopper
InSinkErator 75257 Magnetic Stopper
I’ve replaced mine twice; this rubber compound outlasts the originals, especially with daily use.
Check Price on Amazon →Before ordering, match the part number to your appliance’s model tag — most “defective” part returns are wrong-model orders.
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