Oshkosh T.C.21000 Series 1:1

Oshkosh T.C.21000 Series 1:1

This is a remanufactured Oshkosh 21000 Series transfer case used in heavy-duty front discharge concrete mixer trucks. It is a two-speed unit with air-activated shifting for high and low ranges, as well as a front axle declutch feature. The 1.00:1 high-range ratio allows for efficient on-road travel, while the low-range (2.38:1 or 2.48:1) provides increased torque for job site maneuverability. This part is a critical drivetrain component necessary for directing power from the transmission to the front and rear axles, and replacement is required due to wear or failure of internal components like gears and shafts.

Key Features

• Features a 1.00:1 high-range gear ratio and a low-range of either 2.38:1 or 2.48:1.
• Equipped with air-shift capabilities for high/low range selection.
• Includes an air-shift front axle declutch mechanism.
• Available in both aluminum and steel case variants.
• Designed as a 2-shaft transfer case.

Fits These Mixers

Terex, Terex Advance, Oshkosh. Fits Oshkosh S-Series, Terex, and McNeilus front discharge mixer trucks.

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.