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Caterpillar is excited to announce the 651 comeback into our Wheel Tractor-Scraper lineup in 2022. Delivering high levels of productivity, the 651 single engine earthmoving system is a wise choice on numerous large-scale projects by providing fast cycle times when working in lower grades and rolling resistance applications. First introduced into the Cat® Wheel Tractor-Scraper lineup in 1962, the 651 continues to uphold its legacy as one of our signaturemachines. Its single engine power gives the ability to work with a Cat D10 or D11 push dozer delivering ultra-fast load times and the ability to work in abrasive or rocky conditions. Improvements in productivity, combined with enhancements in operator comfort, and new safety features – Powered Access System and effective wet disc brakes – for a machine offering high returns on profit and time

Cat Specs

Tractor Engine

Flywheel Power - Tractor/Scraper
469kW (629 hp)

Scraper Bowl

Scraper Capacity - Heaped
44 yd³


Top Speed - Loaded
34.9 mile/h
6.7 mile/h


Length - Overall Machine
58.96 in
Width - Overall Machine
14.3 in
Width - Tractor
12.3 in
Width - Inside of Bowl
12.07 in
Height - Overall Shipping
15.29 in
Height - Top of Cab
12.86 in
Ground Clearance - Tractor
2.3 in
Front of Tractor to Front Axle
14.93 in
Axle to Vertical Hitch Pin
1.8 in
Height - Scraper Blade Maximum
2.17 in
Wheel Base
32.68 in
Rear Axle - Rear of Machine
8.07 in