98923 Lowes AquaSource Original Flapper - 2 Pack
Two blue AquaSource toilet flappers with metal chains for 98923 replacement.
Blue AquaSource toilet flapper replacement part with metal chain shown above a white toilet.
Blue AquaSource toilet flapper replacement part with adjustment dial and metal chain.
Installation guide showing how to attach the chain to the AquaSource toilet flapper inside the tank.
Blue 3-inch AquaSource toilet flapper replacement with measurement diagram for Lowes toilet models.
Blue AquaSource toilet flapper with stainless steel chain and close-up view of attachment point.
Professional plumber repairing a toilet to install AquaSource replacement parts.
Two blue AquaSource toilet flappers with metal chains for 98923 replacement.
Blue AquaSource toilet flapper replacement part with metal chain shown above a white toilet.
Blue AquaSource toilet flapper replacement part with adjustment dial and metal chain.
Installation guide showing how to attach the chain to the AquaSource toilet flapper inside the tank.
Blue 3-inch AquaSource toilet flapper replacement with measurement diagram for Lowes toilet models.
Blue AquaSource toilet flapper with stainless steel chain and close-up view of attachment point.
Professional plumber repairing a toilet to install AquaSource replacement parts.
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98923 Lowes AquaSource Original Flapper - 2 Pack

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98923 Lowes AquaSource Original Flapper

Key Features

  • Package contains two 3-inch toilet flappers.
  • Engineered for 1.28 GPF (gallons per flush) toilets.
  • Constructed from durable, water-resistant materials.
  • Includes a pre-attached stainless steel chain and clip hook.

Replaces / Cross-Reference Part Numbers

  • Lowe's AquaSource: 98923
  • Gerber: 99-788
  • Korky: 3060BP, 3070BP
  • Fluidmaster: 5403

Compatibility & Fitment

  • Fits AquaSource 2-piece toilets with a 3-inch flush valve opening.
  • Direct replacement for toilet models: 98923, 312795, 352027, 395280, and 12293.

When to Replace

  • Toilet runs continuously or intermittently.
  • Water audibly leaks from the tank into the bowl.
  • Original flapper is warped, brittle, or degraded.
  • Weak or incomplete flush performance.

Installation Tips

  • Shut off the water supply and flush to empty the tank before installation.
  • Ensure the flapper mounting ears securely clip onto the flush valve pegs.
  • Attach the chain hook to the flush lever arm.
  • Adjust the chain to have approximately 1/2 inch of slack when the flapper is closed.
  • Verify the chain does not interfere with the flapper's ability to create a complete seal.
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Item Package Dimensions L x W x H
‎8.7 x 4.45 x 2.24 inches
Package Weight
‎7.04 ounces
Model Name
‎98923 Toilet Flapper PO2
Color
‎Blue
Number of Items
‎2
Part Number
‎98923 Toilet Flapper
Included Components
‎2 x 98923 Toilet Flapper

FAQ

This flapper is designed for AquaSource 1.28 GPF single-flush toilets, including models 98923, 12293, 312795, 352027, 395280, 773675, 2483278, 1170083, and 1170084. It is also compatible with Gerber model 99-788. Please note this is specifically for side or front-handle flush toilets and is not compatible with top-mounted push-button flush systems.
This part replaces AquaSource/Lowe's part numbers 98923, 12293, 312795, 352027, 395280, 773675, 2483278, 1170083, and 1170084. It also serves as a compatible replacement for Gerber 99-788, Korky 3060BP and 3070BP, and Fluidmaster 5403.
A failing flapper is the most common cause of a running toilet. If you hear water continuously trickling into the bowl, notice the toilet tank refilling on its own periodically, or if the flush handle feels loose and does not consistently clear the bowl, the flapper seal has likely degraded or warped and requires replacement.
Installation is straightforward and requires no tools. Simply turn off the water supply to the toilet, flush the tank to drain the water, unhook the old flapper chain from the flush lever, and slide the flapper off the mounting pegs. Snap the new flapper into place, reattach the chain, and ensure there is a small amount of slack when the handle is in the resting position.
Toilet flappers are made of flexible materials that naturally degrade due to constant exposure to water and chemical additives found in municipal water supplies or in-tank cleaning tablets. Over time, the material can become brittle, lose its shape, or develop a mineral buildup that prevents a watertight seal against the flush valve.