Replacement 3.5K Axle for Saltwater Trailer with 90.5" Hub Face

Updated 07/31/2026 | Published 07/27/2026

Products Featured in This Question

Dexter Boat Trailer Axle - 89" Long - Galvanized

$632.90

Question:

looking for a replacement axle for a salt water marine trailer. Hub face 90.5, spring centre 76, overall length 96 3500 lb capacity

asked by: Steve

Expert Reply:

Hi Steve,

The Dexter Boat Trailer Axle - 3,500lbs part # DX47HR is the closest axle we have to your measurements. Since this is going on a saltwater marine trailer, you definitely need a galvanized axle to protect from corrosion. Because this is intended for boat trailers, this axle has a 4.5" drop to lower the deck to make boat launches easier. Its hub face measurement is 89" and spring center measurement is 70". This does vary slightly from what you measured but the hub face measurement is close enough to make me think it is an 89" axle since 89" is standard. Since the spring seats are closer together than your current axle, you can always cut off the springs seats and weld them back on at the distance you need to work with your suspension.

What are you hauling with your saltwater marine trailer?

expert reply by: Claire H