Eaton Pump Seal Kit

Eaton Pump Seal Kit

This is a replacement seal kit for Eaton's 5421 and 5423 series hydrostatic transmission pumps, which are commonly found on McNeilus, Con-Tech, and Terex concrete mixer trucks. The kit contains the necessary O-rings, gaskets, and seals to perform a standard overhaul or repair, addressing hydraulic fluid leaks and restoring pump performance. Regular maintenance with a quality seal kit is essential to prevent system contamination and ensure the longevity of the main hydraulic pump.

Key Features

• Designed specifically for Eaton 54 series (5421/5423) heavy-duty pumps
• Includes all standard seals and gaskets for a pump rebuild
• Restores hydraulic integrity to prevent leaks and maintain system pressure
• Direct cross-reference for McNeilus part number 990090-000

Fits These Mixers

McNeilus, Terex, Con-Tech. Fits Eaton 5421 and 5423 series heavy-duty hydrostatic pumps commonly installed in McNeilus and Con-Tech rear-discharge concrete mixers, as well as some Terex front-discharge models.

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.