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Fluidmaster Flapper Assembly
- Limited 1-year warranty
- For the American Standard Evolution 2 toilets
- Plastic construction
- Easy to install
Manufacturer Resources
Product Specs
- Product Group:
- Washroom/Bath Accessories
- Product Subgroup:
- Parts and Accessories
- Product Type:
- Flapper Assembly
- Department:
- Plumbing
- Parts and Accessories Type:
- Flapper
- Application:
- Toilet
- Country of Origin:
- Mexico
American Standard 7381008-400.0070A – Frequently Asked Questions
1) Which American Standard toilets does the 7381008-400 Fluidmaster flapper fit?
The 7381008-400 flapper assembly is the Fluidmaster-made replacement for American Standard Evolution 2 toilets. If the tank you are servicing is an Evolution 2, this is the matching flapper; for other American Standard models, match the flapper to that model's own repair part number rather than assuming this one carries over.
2) What part number do I order for the American Standard Evolution 2 toilet flapper?
Order American Standard 7381008-400, manufacturer part 7381008-400.0070A. It is a complete flapper assembly rather than a loose rubber disc, so you are replacing the whole flapper unit.
3) Is this flapper rubber or plastic, and does that matter for a running toilet?
The Evolution 2 flapper assembly is plastic construction. The plastic part is the frame and hinge arms that clip to the overflow tube; it is the sealing face that stops the tank from weeping into the bowl, which is why a worn flapper is the first thing to swap when a toilet runs intermittently.
4) Can a maintenance tech change this flapper without tools or shutting down the fixture for long?
Yes. Shut the supply, flush to drain the tank, unclip the old flapper from the overflow tube ears, unhook the chain from the trip lever, and reverse the process with the new assembly. No tools and no draining of the bowl required, which is what makes this a practical stock item for a property manager keeping a few on the cart.
5) Will this flapper work on a flush valve from a different brand of toilet?
Treat it as an American Standard Evolution 2 part only. Flappers key to the specific flush valve body and overflow tube diameter they were molded for, and this one is specified for the Evolution 2. On a Kohler, Toto, or Gerber tank, use that manufacturer's own flapper for the model.
6) Is there a finish or color choice on the American Standard 7381008-400 flapper?
No finish choice applies. It is an internal tank component, so it ships as a single unfinished part with no color or finish option to specify on the order.
How fast can I get the American Standard 7381008-400.0070A delivered?
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Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit,
reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the American Standard 7381008-400.0070A come with a warranty?
Absolutely. The American Standard 7381008-400.0070A is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the American Standard 7381008-400.0070A?
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