What This Bolt Actually Does
This is the equalizer bolt assembly out of a Hutchinson Heavy Duty walking beam setup, the kind you'll find under a lot of Freightliners from the 80s clear up through current trucks depending on axle config. The bolt runs through the equalizer bracket and lets the beam pivot as the axle walks up and down independently on each side - that's the whole point of a walking beam suspension, keeping both axles loaded evenly on uneven ground.
When this bolt wears out you get play in the suspension, clunking over bumps, and eventually it'll beat out the bracket bore itself, which turns a cheap bolt fix into an expensive bracket replacement. Catching it early saves you money down the road.
This one interchanges with Hutchinson and Chalmers-type equalizer assemblies, part number 334639, and R303414 among others - same physical part, different catalog numbers depending who stamped the box.
Reading the Cross-Reference Numbers
You'll see this bolt listed under Hutch/Hutchens numbers like M-2975, 09-3217, 334-639, GD-2975, HU10F, and 750-03, plus a straight cross-reference to 334-548. These all trace back to the same physical bolt assembly - Hutchinson made the original design, other manufacturers built to the same spec, and various parts houses have re-numbered it over the decades for their own catalogs.
Where you need to be careful is bolt length and bracket bore diameter - even within the same family there were running changes over the years, and a bolt that's a quarter inch too long or too short will bind up your equalizer or won't seat right in the bracket. Grease fitting placement and thread pitch on the nut end can also differ between production runs.
Surest way to confirm: pull the old bolt out and measure it, or better yet read whatever number's stamped on the bracket or the bolt head itself if it's still legible. If you can get us your VIN we can usually narrow it down that way too, but on suspension parts like this the physical measurement beats a VIN lookup every time.
Ordering From PartStop
We keep these in stock here in Tacoma and most orders for local fleets go out same day - if you're broke down or need a truck back on the road, call ahead and we'll have it waiting at the counter.
Ship nationwide if you're not local, and we back this bolt with the standard 6+ month warranty like everything else in the suspension line. At $29 it's a lot cheaper than replacing a chewed-up equalizer bracket because somebody let a worn bolt go too long.
Still the same rule applies - confirm the number against your old part or your VIN before you order. Equalizer setups have enough variation across the Freightliner lineup that we'd rather you check twice than send something back.
1028701 Cross-Reference & Interchange Numbers
These manufacturer and aftermarket numbers commonly cross-reference to 1028701. Use them to identify the part — then confirm the exact fit by VIN or the number stamped on your old unit before you order. An interchange is a starting point, not a fitment guarantee.
| Brand / Line | Cross-Reference Numbers |
|---|---|
| Cross-Reference | 334-548 |
| Hutch / Hutchens | M-2975, 09-3217, 334-639, GD-2975, HU10F, 750-03, F296706, 701000 |
Frequently asked questions
Does 10287-01 fit my Freightliner?
Depends on the axle and suspension config - Freightliner ran different equalizer setups across decades and models. Give us your VIN or pull the number off your old bolt/bracket and we'll confirm before you buy.
Is this the same as the Hutchens 334-639 bolt?
Yes, 334-639 is one of the numbers this same bolt assembly crosses to - different catalog number, same physical part. Still worth confirming against your old part's dimensions since Hutchens ran a few variations over the years.
How do I know if my equalizer bolt is actually worn out versus something else in the suspension?
Look for play when you rock the beam by hand, or an egg-shaped hole where the bolt passes through the bracket. If the bore itself is worn oversize, a new bolt alone won't fix it - you'd need the bracket too.
Not sure it fits? We check before you pay.
Run your VIN and we’ll match parts to your exact truck, or call the counter — a person who knows trucks verifies fitment by OEM number before the order ships. No wrong-box returns.
More cross-reference guides
Need the part, not just the reading?
Every part below is a Premium Quality aftermarket Direct Replacement with published OEM cross-reference numbers, a 6+ month warranty and same-business-day shipping from Tacoma, WA. Not sure it fits? Run your VIN — or call and a person who knows trucks will verify fitment before you pay.