Agriwell
Part No.

Popular
Code

Description

Male
Spline

Female
Spline

Extends
PTO

Overall
Length

Max
H.P.

Weight
(lbs.)

AWPTO1660

SP1660

Sleeve increaser; Ford 231082

1-3/8” x 6

1-1/8” x 6

0

2”

75

0.2

AWPTO1662

SP1662

Sleeve increaser; all tractors
except Ford

1-3/8” x 6

1-1/8” x 6

0

2-1/4”

75

0.2

AWPTO1663

SP1663

PTO spline adapter;
converts 21 spline
1000 RPM to 6 spline 540 RPM

1-3/8” x 6

1-3/8” x 21

3-1/4”

5-7/8”

75

2.0

AWPTO1664

SP1664

Universal reducer

1-1/8” x 6

1-3/8” x 6

3-5/16”

5-1/8”

75

1.4

AWPTO1665

SP1665

PTO increaser

1-3/8” x 6

1-1/8” x 6

3-5/8”

5-1/2”

75

1.3

AWPTO1666

SP1666

PTO short increaser

1-3/8” x 6

1-1/8” x 6

1-1/8”

3-1/4”

75

0.6

AWPTO1667

SP1667

PTO spline adapter; 20 to 6
spline; set screw lock

1-3/8” x 6

1-3/4” x 20

4-5/8”

7-1/2”

75

6.1

AWPTO1668

SP1668

PTO extender

1-3/8” x 6

1-3/8” x 6

3-5/16”

5-1/8”

75

2.2

AWPTO16610

SP16610

PTO spline adapter with quick-release;
converts 21 spline 1000 RPM to
6 spline 540 RPM

1-3/8” x 6

1-3/8” x 21

3-7/8”

6-1/2”

75

2.5

AWPTO16611

SP16611

PTO spline adapter with quick-release:
converts 6 spline 540 RPM to
21 spline 1000 RPM

1-3/8” x 21

1-3/8” x 6

4-1/8”

6-1/2”

75

2.5

AWPTO16612

SP16612

PTO extender with quick-release

1-3/8” x 6

1-3/8” x 6

4-3/8”

6-1/2”

75

2.8

AWPTO16613

SP16613

PTO extender with quick-release;
21 spline 1000 RPM

1-3/8” x 21

1-3/8” x 21

4-1/8”

5-7/8”

75

3.2

AWPTO16615

SP16615

PTO spline adapter;
20 to 21 spline; set screw lock

1-3/8” x 21

1-3/4” x 20

4-5/8”

7”

75

4.2

AWPTO16646

SP16646

Splined adapter; extended
length for use with Gresen pump

1-3/8” x 6

1-3/8” x 6

11-5/8”

15”

75

6.0

AWPTO16630

SP16630

Over-running clutch; maximum
1000 RPM operating speed

1-3/8” x 6

1-3/8” x 6

3-13/16”

6-1/2”

75

5.0

AWPTO16631

SP16631

Over-running clutch; maximum
1000 RPM operating speed

1-3/8” x 6

1-1/8” x 6

3-13/16”

6-1/2”

75

5.0

AWPTO16660

SP16660

Over-running clutch with quick-release;
maximum 1000 RPM operating speed

1-3/8” x 6

1-3/8” x 6

4-1/2”

6-3/4”

75

7.2

AWPTO16661

SP16661

Over-running clutch with quick-release;
maximum 1000 RPM operating speed

1-3/8” x 6

1-1/8” x 6

4-1/2”

6-3/4”

75

7.1