AutoFlex-Knott Sealed Hub Kit 2,700 lb Axle 250-033291

The EZ Loader Knott 5-lug sealed bearing hub kit 250-033290 replaces one wheel hub on a compatible AutoFlex-Knott axle. It uses a 5 on 4½″ wheel bolt pattern. The sealed bearing and rear grease seal come installed.

Check your axle tag, spindle, and existing hub before ordering. Several hubs share this wheel bolt pattern, so confirm all three for a match.

What’s Included

• (1) Preassembled hub with sealed bearing and rear grease seal installed
• (1) Dust cap
• (1) O-ring
• (1) Flanged spindle nut
• (5) Lug nuts

Confirm AutoFlex-Knott Fitment

We photographed this axle tag on an EZ Loader 68BT 14–17′ trailer with 12″ wheels in our yard. That trailer is fitted with hub 250-033290. Look for the red AutoFlex-Knott tag on your axle beam.

When you send us a photo of your axle tag, capture the Type, Serial Nr., and Load capacity fields.

See the EZ Loader 68BT trailer used in this example.

Compare your spindle, hub or bearing markings, and wheel clearance. If you have a compatible two-place PWC trailer with the matching 2,700 lb AutoFlex-Knott torsion axle, check Knott sealed hub kit 250-033291.

Annual Inspection for Knott Sealed Hubs

Knott sealed bearings need no routine greasing. We recommend having your dealer perform a “rock and roll” check at least once a year, ideally before boating season.

With the trailer securely supported and the wheel clear of the ground, have your dealer gently rock the wheel side to side to check for play. Then have them turn the wheel back and forth by hand. It should turn smoothly. If they feel play or roughness, or hear rumbling or grinding, have them confirm the cause. Replace the hub assembly if the sealed bearing is worn.

When replacing the hub, use the new single-use spindle nut supplied with the kit. Follow the axle manufacturer’s instructions for the spindle nut, wheel lug nuts, dust cap, and O-ring. Check smooth rotation and wheel clearance before returning the trailer to service.

Need Help Matching Your Hub?

Send your trailer VIN, axle-tag photo, and a close-up of the existing hub to Parts@411Marine.com, or call our parts counter at 843-683-5797. Include any hub or bearing markings and spindle measurements you have.

Independent EZ Loader Parts Dealer Notice

EZLoaderParts411.com is operated by 411MarineCom, Inc., part of the 411-Trailers Group. We supply OEM EZ Loader replacement parts and help customers confirm fit from our parts counter in Hardeeville, South Carolina.