Cotta speed reducer

Model GR16E is a heavy duty engine rotation reduction gear. A clutch and bell housing is included for mounting to an engine for a compact package with proper alignment. The gears are helical and carburized for ultimate strength and endurance. Gears are designed per AGMA specifications. The bearings are anti-friction and the case is cast iron. A wide variety of ratios are available.

Contact Us

CAPACITY (Maximum input torque): 1650 lb. ft.


RATIOS: 1.50, 1.66, 1.80, 1.95, 2.11, 2.29, 2.50, 2.73, 3.00

BELL HOUSINGS: SAE #1, #1/2, #0, #00

CLUTCHES: IBF214, SP314, SP218, SP318, 18" rubber block drive

OUTPUT SHAFT: 4.000" diameter, 9" long with 1" x 1/2" keyway

REAR SUPPORT: Two mounting feet provided

LUBRICATION: Lube pump furnished, 32 pints sump capacity

COOLING: A heat exchanger furnished.

WEIGHT: 1530 lbs

Cotta Transmission Logo

Authorized Distributor

Palmer Johnson is an authorized distributor and service provider for Cotta Transmission products.

Genuine Parts

Thousands of parts ready to ship in as little as two hours from our store at

Service and Support

Seven master rebuild centers, ten full-service centers, and an extensive dealer network to serve you.