Fluidmaster 400ARHRFCS PerforMAX Toilet Repair Kit
- Kit of fill valve, flapper and connector
- 2 inch flapper with adjustable water level dial
- 12 inch Click Seal toilet connector
- 2X greater refill rate, per the maker
- Works with 2 inch flush valves, incl. Kohler, Toto, American Standard
- Size adapters included
Last refreshed Sep 8, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A repair kit that swaps three worn toilet parts in one purchase. Confirm the flush valve size and the supply line fit before ordering.
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ASIN: B01E1E1JSMModel: 400ARHRFCSCategory: Toilet Flappers
Overview
Replacing the fill valve, flapper and supply connector in one go is what this Fluidmaster kit is built for. The fill valve twists to adjust, the flapper has a water level dial, and the connector clicks when sealed.
Three worn parts changed together address noisy filling, constant running and leaks, the problems the maker lists. The limitation is fit, since the kit suits only toilets with the matching flush valve size.
Who it's for
Homeowners and landlords doing a full tank refresh will like that no part must be sourced separately. Owners of other toilets, or those who need one component, can buy parts singly.
Pros and cons
- Fill valve, flapper and connector in one kit
- Roller clamp water saving design
- Size adapters included
- Tool-free connector with audible click
- Only suits the stated flush valve size
- Connector length is fixed
- Sold as a set, not as single parts
Performance notes
The fill valve controls how quickly and how high the tank refills, and twist adjustment sets the stop point. The flapper seals the flush opening, with a dial to set the water level it lets out per flush. A tool-free connector makes up the supply joint, and the click confirms the seal.
Specifications
| Brand | Fluidmaster |
|---|---|
| Model | 400ARHRFCS |
| Dimensions & fit | |
| Flush valve size | 2 inch |
| Compatibility & installation | |
| Compatibility | All 2 inch flush valve toilets, incl. Kohler, Toto, American Standard |
| Included components | |
| Included Components | 400AH PerforMAX fill valve, 502 flapper, 12 inch Click Seal connector, size adapters |
| Other details | |
| Connector Type | 12 inch universal Click Seal (Model B1T12CS) |
| Fill valve | PerforMAX 400AH (Model 400ARHR), EZ-twist adjustable |
| Flapper | 502 adjustable 2 inch (Model 502P21), adjustable water level dial |
| Ballcock fitting | 7/8 inch x 1/2 inch |
Frequently asked questions
Which toilets does the Fluidmaster 400ARHRFCS kit fit?
The description says its universal design works with all 2 inch flush valve toilets, including Kohler, Toto and American Standard. The listing names no other flush valve size.
What is in the Fluidmaster 400ARHRFCS repair kit?
A PerforMAX fill valve, an adjustable 2 inch flapper and a 12 inch universal Click Seal toilet connector, with size adapters included.
Do I need tools for the Click Seal connector?
The description says no tools are required. Twist it on, and an audible click tells you it is sealed.
What toilet problems is the Fluidmaster kit meant to solve?
The maker lists noisy filling, constant running, leaks, weak flushing and slow filling.