Buck Algonquin manufactures a full line of transmission couplers for most marine transmissions. Our couplers are cast from ductile iron and machined to SAE J755 specifications. Most of our couplers are machined with our universal bolthole pattern. As well, all of our couplers are supplied with mounting hardware. We also offer custom machining for any couplers we do not standardly produce. We carry an extensive inventory in order to better supply our distributors and OEMs.
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Item #

Transmission

Coupler Type

Flange Diameter

Shaft Diameter

# of Bolts

Bolt Size

5010502000 N/A Twin Disc ZF N/A Split N/A 10.5 in N/A 2 in N/A 8 N/A 1 in
5010502250 N/A Twin Disc ZF N/A Split N/A 10.5 in N/A 2-1/4 in N/A 8 N/A 1 in
5010502500 N/A Twin Disc ZF N/A Split N/A 10.5 in N/A 2-1/2 in N/A 8 N/A 1 in
5010502750 N/A Twin Disc ZF N/A Split N/A 10.5 in N/A 2-3/4 in N/A 8 N/A 1 in
5010503000 N/A Twin Disc ZF N/A Split N/A 10.5 in N/A 3 in N/A 8 N/A 1 in
5010503500 N/A Twin Disc ZF N/A Split N/A 10.5 in N/A 3-1/2 in N/A 8 N/A 1 in
5010503750 N/A Twin Disc ZF N/A Split N/A 10.5 in N/A 3-3/4 in N/A 8 N/A 1 in
5010504000 N/A Twin Disc ZF N/A Split N/A 10.5 in N/A 4 in N/A 8 N/A 1 in
501050NOBO N/A Twin Disc ZF N/A Split N/A 10.5 in N/A N/A 8 N/A 1 in
503500W1000 N/A Walters N/A Split N/A 3.5 in N/A 1 in N/A 8 N/A 3/8 in
503500W1125 N/A Walters N/A Split N/A 3.5 in N/A 1-1/8 in N/A 8 N/A 3/8 in
503500W1250 N/A Walters N/A Split N/A 3.5 in N/A 1-1/4 in N/A 8 N/A 3/8 in
503500W1375 N/A Walters N/A Split N/A 3.5 in N/A 1-3/8 in N/A 8 N/A 3/8 in
503500W1500 N/A Walters N/A Split N/A 3.5 in N/A 1-1/2 in N/A 8 N/A 3/8 in
503625W1000 N/A Walters N/A Split N/A 3.625 in N/A 1 in N/A 6 N/A 3/8 in
503625W1125 N/A Walters N/A Split N/A 3.625 in N/A 1-1/8 in N/A 6 N/A 3/8 in
503625W1250 N/A Walters N/A Split N/A 3.625 in N/A 1-1/4 in N/A 6 N/A 3/8 in
503625W1375 N/A Walters N/A Split N/A 3.625 in N/A 1-3/8 in N/A 6 N/A 3/8 in
503625W1500 N/A Walters N/A Split N/A 3.625 in N/A 1-1/2 in N/A 6 N/A 3/8 in
50400a1000 N/A Paragon N/A Split N/A 4 in N/A 1 in N/A 4 N/A 3/8 in
50400a1125 N/A Paragon N/A Split N/A 4 in N/A 1-1/8 in N/A 4 N/A 3/8 in
50400a1250 N/A Paragon N/A Split N/A 4 in N/A 1-1/4 in N/A 4 N/A 3/8 in
50400a1375 N/A Paragon N/A Split N/A 4 in N/A 1-3/8 in N/A 4 N/A 3/8 in
50400a1500 N/A Paragon N/A Split N/A 4 in N/A 1-1/2 in N/A 4 N/A 3/8 in
50400aNOBO N/A Paragon N/A Split N/A 4 in N/A N/A 4 N/A 3/8 in
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