Fluidmaster Performax valve front view highlighting quiet, powerful refill.
Fluidmaster 400H-5003 side installation shows universal fit for many toilets.
Fluidmaster Performax 2-pack unboxing reveals ready-to-install components.
Fluidmaster valve height adjustment EZ-Twist demonstrates versatile tank compatibility.
Fluidmaster toilet fill valve bowl refill highlights strong refill capability.
Fluidmaster anti-siphon design ensures safe, code-compliant water supply.
Fluidmaster quiet, fast refill supports smooth bathroom usage.

Fluidmaster

Fluidmaster 400H-5003 Performax Universal Toilet Fill Valve 2-Pack

High-performance tools and home improvement made for confident daily results

$45.47

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Why customers choose TaskHolt Tools

Overview

The Fluidmaster 400H-5003 Performax Universal Toilet Fill Valve comes as a blue 2-pack designed to upgrade toilet refills with speed, quiet operation, and straightforward installation. Its universal fit targets a wide range of tanks, while the EZ-Twist height adjustment and adjustable tank and bowl levels let you tailor performance to your specific toilet model and household needs.

Key benefits at a glance

  • 2X faster bowl refill compared with standard designs, paired with ultra-quiet operation
  • Easy installation with pre-installed components and step-by-step instructions
  • Universal fit for most toilet brands and models, reducing the guesswork of replacements
  • Tank and bowl water level dials to customize the flush and optimize water use
  • EZ-Twist height adjustment from 9 in. to 14 in. to fit more tanks; compatible with 1.28 GPF and 1.6 GPF toilets, and suitable for some pre-1994 3.5 GPF models
  • Code-approved anti-siphon design to protect the fresh water supply
  • Includes everything needed for replacement: fill valve, washer, locknut, tube, and clip

Put it into daily use

In everyday bathroom use, you may notice quicker refill cycles after flushing and quieter operation that minimizes disruption during busy mornings. The adjustable tank and bowl controls empower you to fine-tune performance—balancing effective refills with desired water use—without sacrificing reliability.

What’s in the box

The package provides a complete fill valve kit along with the necessary hardware. Being a 2-pack, it also offers a convenient option for replacing multiple toilets now or keeping a spare valve on hand for future upgrades.

Warranty and safety

A 7-year warranty backs this valve, and its anti-siphon design adds an extra layer of protection for your water system.

FAQ

Q: What toilets does the Fluidmaster 400H-5003 fit?

A: Designed for most brands and models, compatible with 1.28 GPF and 1.6 GPF toilets, plus some pre-1994 3.5 GPF toilets.

Q: What is included in the 2-pack?

A: Includes a fill valve, washer, locknut, tube, and clip for a complete replacement.

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