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TLDR Review: 24-Inch Gate Extension

By ShopSavvy Team

Published: May 16th, 2026

Pros

•Easy to install, typically in less than 10 minutes, with many reviewers noting a straightforward setup.
•Can reuse the existing black plastic bar, saving time and effort during installation.
•Made by Kohler, a brand perceived as higher quality and more durable than generic options.
•Constructed from robust plastic, which feels more durable compared to stretchy rubber versions.
•Successfully resolved issues like leaks and ghost flushing for many users, restoring proper function.
•Fits Kohler low tank toilets, particularly models like 3384, 3386, and K3467, with proper compatibility checks.
•Some reviewers found that aftermarket parts, like this one, can be more reliable than OEM replacements.
•Provides a proper seal and stops continuous water movement in many cases.
•The part's design allows for easy reinstallation and adjustment if needed.
•Noted to be more effective than previous noEM flappers, with longer-lasting performance.

Cons

•The picturased installation instructions can be unclear, leading to some confusion during setup.
•May not fit all Kohler models perfectly, so doublheck compatibility before buying.
•Some reviews mentioned the hinge isn't wide enough, leading to imperfect seals or ghost flushing.
•Minor difficulty in installation due to differences from previous rubber flappers, especially sliding the plastic bar.
•A few users experienced persistent leaks or water dances in the bowl if not installed properly or if the seal isn't perfect.
•Compatibility issues could cause leaks or improper flushing if not carefully verified.
•Overall, a few users wished for more detailed, clearer installation guidance.
•May require wiping down the seat area for a better seal and to prevent ghost flushing.

Bottom Line

This Kohler Extra Tall Gate Extension 24Inch is generally well-regarded for its durability and ease of installation, especially if you’re comfortable with basic DIY plumbing. It’s a solid choice for replacing worn-out flappers, especially since many reviewers reported successful fixes for leaks and ghost flushing. However, take care to verify compatibility and read installation instructions carefully, as those picture-based guides can be confusing. If you’re looking for a product that’s likely to last and offers reliable performance, this model is worth considering—but if you want a more foolproof fit, exploring alternative brands like Korky might be wise.

Lowest at any Popular Retailer

$6.71 at Amazon

How we researched this

About this review: We pulled together findings from professional reviews and hundreds of user reviews, and cross-referenced them with ShopSavvy's pricing data from 70 retailers to give you the short version.