CURT Trailer Jack Parts: Feet, Casters, Mounts & Cranks

CURT trailer jack parts include support feet, caster wheels, swivel mounting hardware and crank handles. A part that fits a 2-inch round tube is not necessarily suitable for another jack with similar dimensions. This guide compares exact CURT numbers and their functions so you can identify the appropriate repair component rather than replacing the entire jack.

Jack feet, wheels and mounting hardware differ

Feet and casters

28270 bolts to a compatible 2-inch tube; 28272 and 28273 use a safety pin. 28276 is a rolling tube-end caster, while 28912 is a replacement marine-jack wheel.

Swivel mounts

28931 and 28932 are male pipe mounts with different retaining-pin diameters. 28938 is a bolt-through flange, while 28911 supplies marine-jack mounting bars and bolts.

Crank replacements

28921 belongs to selected top-wind A-frame jacks; 28964 is identified for the 28570 direct-weld square jack. Neither is universal.

CURT trailer jack service-part compatibility chart

The rating applies to the stated part under CURT's installation conditions. A 2,000-lb foot does not increase the load rating of a lower-rated jack.

MPN Replacement type Intended fit Included / interface Rating reference
28270 Bolt-on foot plate 2-inch round jack tube Nut and bolt 2,000 lb support
28272 Pin-on foot plate 2-inch round jack tube Safety pin 2,000 lb support
28273 Pin-on foot plate, packaged 2-inch round jack tube Safety pin 2,000 lb support
28276 Removable jack caster Compatible 2-inch round jack tube Safety pin 1,200 lb support
28911 Marine jack bolt-through hardware Compatible CURT marine trailer jacks 2 mounting bars and 4 bolts Follow jack instructions
28912 Marine jack replacement wheel Compatible CURT marine swivel jack 6-inch wheel, bolt and bushing Follow jack instructions
28921 Top-wind A-frame jack handle CURT 28200 / 28202 / 28203 / 28250 Crank handle and fitting hardware Not a load-bearing foot
28931 Male swivel pipe mount Selected CURT pipe-mount swivel jacks 9/16-inch pull-pin opening Follow installed jack rating
28932 Male swivel pipe mount Selected CURT pipe-mount swivel jacks 5/8-inch pull-pin opening Follow installed jack rating
28938 Bolt-through swivel jack flange Compatible CURT bracket-mounted swivel jack Mounting flange only Follow installed jack rating
28964 Top-wind square jack handle CURT 28570 direct-weld jack Crank handle and fitting hardware Not a load-bearing foot

Installation, support and compatibility checks

Keep the trailer supported safely while changing service components. Follow CURT's current instructions for the original jack, including pin engagement, fastener torque and weld requirements. A mounting bracket or replacement handle does not carry its own independent trailer-support rating.

Do not swap components on the basis of nominal diameter

CURT 28276 is a removable caster that fits a compatible 2-inch jack tube; 28912 is a marine-jack replacement wheel with a bolt and bushing. CURT 28931 and 28932 use different swivel pin-hole sizes, and must be paired with the correct mount.

For boat trailers, inspect the marine jack's corrosion protection and the trailer frame's mounting strength. Rolling casters should only be used within their specified load and surface limits.

CURT jack feet, casters, swivels and cranks

Choose a part number below to review current product details and availability.

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