Challenge Filler Neck Flapper

Challenge Filler Neck Flapper

This is a replacement water tank flapper seal designed for the filler neck of concrete mixer trucks. It is a critical component of the flapper assembly, which acts as a one-way valve to prevent water from splashing out while the truck is in motion or during the filling process. Over time, the original seal can degrade, crack, or tear, leading to leaks and inefficient operation. This seal is a direct replacement for several OEM parts, ensuring a proper fit for various mixer brands.

Key Features

• Direct replacement for multiple OEM brands.
• Measures 6.75 inches in diameter.
• Made from durable rubber to ensure a tight seal and resist wear.
• Prevents water splash-back from the filler neck.

Fits These Mixers

McNeilus, Con-Tech, CBMW, Kimble. Fits various rear discharge mixer water tanks. It is a confirmed cross-reference for McNeilus, Con-Tech, CBMW, and Kimble mixers.

All measurements ± standard manufacturing tolerance.

Product descriptions are drafted with automated tools and reviewed as time allows. While we work to keep them accurate, specifications and fitment should be confirmed with a Customer Service specialist at 800-745-3414 before purchase. Found an error? Let us know and we’ll fix it.