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Aluminum Short Block Assembly

1 review
  • Aluminum Blocks
  • Easy to Reach Grease Fittings
  • Factory Assembled


2 in stock (can be backordered)

About this Item

  • Aluminum Blocks
  • Easy to Reach Grease Fittings
  • Factory Assembled

Aluminum Short Block Assembly

The Aluminum Short Block Assembly is a complete replacement worm assembly. Fits all BH-USA standard flat-plate hoists. Features industry-standard 2 inch bearing blocks. Made from marine-grade aluminum. Bronze worm installed on hardened drive shaft inside blocks from the factory. Flange bushings on blocks. Easy-to-reach grease fittings. Easy replacement for worn out worms on older gear plates. Hardware included. Aluminum worm cover included. Made by BH-USA.


(1) – GPA Worm Shaft
(1) – GPA Aluminum Worm Cover
(2) #12209 – 3/4″ Drive Shaft Collar
(1) – GPA Shaft plated key 3/16 in. x 3/16 in. x 2 in.
(1)  -Bronze GPA Worm
(4) #12301 – 3 in. x 5/16″ Stainless Steel Hex Head Bolt
(1) – Half Moon Key stock for GPA shaft 1 1/8″ x 3/16″
(1) – Short Block Right
(4) #21217 – 5/16 in. Stainless Steel Nut
(1) – Short Block Left
(4) #33871 – 5/16 in. Stainless Steel Split Lock Washer


Worm Material Hardened Bronze 660 or 932
THD Single THD
Worm Diameter 1.75
Worm Length 1.985
Worm Bore .754
Shaft Stress-Proof Steel
Shaft Length 11.75
Shaft Diameter .746
Shaft Key for Pulley .188 x .0938
Aluminum Housing Dimensions:
Overall Weight 4.4 lbs.
Bolt Sizes (Included) 5/16 in. x 2 3/4 in.
Disclaimer: To enable existing hoist owners to repair or replace machined items, BH-USA makes available machine parts used exclusively in the Boat Hoist USA brand flat-plate hoist.BH-USA brand machined parts should NEVER be used with any other brand flat-plate hoist or machined parts. BH-USA does not warranty any individual machine part or any other re-built/repaired flat-plate hoists. Lift-Tex Inc. does not assume ANY liability for damages to person or property when machined parts are used in the re-build of a flat plate hoist, regardless of brand. The purchase of, and use of any machine part sold by BH-USA is at the sole risk of the user and is non-returnable and carries no warranty. BH-USA does not guarantee any individual machined part will fix an existing problem or work as designed. It is the recommendation of BH-USA to purchase a new flat-plate hoist that has been built and tested onsite at BH-USA rather than to attempt to repair an existing hoist.


1 review for Aluminum Short Block Assembly

Rated 5 Out of 5

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  1. Product was what I ordered but was for a larger hoist, my mistake. I ordered the correct part and returned this purchase for credit.

    Ken K

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