3782

3782 Cross-Reference — Bearing Set SET406 Tapered Roller 1.75 ID Truck Whee

SET406 is a matched cone-and-cup tapered roller bearing set, 1.75" inside diameter — the 3782 cone and 3720 cup that show up on a mess of medium and heavy-duty truck wheel hubs. If your old bearing's got '3782' or '3720' stamped on it, you're probably in the right spot.

What You're Actually Buying

A 'set' means two parts sold together — the cone (the part with the rollers) and the cup (the outer race it rides in). SET406 pairs the 3782 cone with the 3720 cup. You can't just buy one and reuse the other; they're lapped to work together, and mixing a worn cup with a new cone is how you get a bearing that howls in six months.

This 1.75" ID bearing shows up as the inner or outer wheel bearing on a lot of Class 6-8 straight trucks and trailers depending on hub design — some axles use it front, some use it as one of two on a rear hub. There's no single 'this fits every Freightliner' answer here; hub manufacturers used this bearing across a wide spread of applications and years.

This isn't a wheel-specific part in the sense of 'made for Ford' or 'made for Freightliner' — it's a bearing size that got specified into a lot of different hub and spindle designs. That's exactly why it cross-references to so many brand numbers.

How the Cross Numbers Line Up (and Where to Watch Yourself)

3782 and 3720 are the Timken-style numbers that most of the industry standardized on for this bore size and taper. FRD0079, BR3782, A1228V1348, the SKF and NTN suffixed numbers — these are the same physical bearing dimensions packaged and stamped by different manufacturers or catalog systems. Same ID, same cone angle, same roller count spec.

Where guys get burned isn't the bearing bore — it's assuming a wheel-end bearing swap is a one-part job. Check your seal size and lip design separately; a bearing set doesn't include the seal, and seal ID/OD has its own number. If you're also replacing hub cups pressed into a drum or aluminum hub, make sure the cup you're ordering matches the housing bore, not just the bearing bore.

Bottom line: pull the old cone or cup off the truck and read the number stamped on the race. If it says 3782 or 3720 or SET406, this is your part. If you're not sure, give us the VIN or bring the old bearing to the counter — cheaper than guessing on a wheel-end job.

Ordering From PartStop

We keep SET406 in stock at the Tacoma counter — same-day pickup if you're local, no appointment needed, just bring the truck or the old part. We ship nationwide too if you're not in the yard.

At $33.99 for the set, it's not the part that breaks a repair order. It's the labor and downtime that hurts, so we'd rather you order the right one once than order twice.

Backed by our standard 6+ month warranty. If it's defective, we replace it — no argument, no runaround.

3782 Cross-Reference & Interchange Numbers

These manufacturer and aftermarket numbers commonly cross-reference to 3782. 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 / LineCross-Reference Numbers
OE/Cross-Ref3720, SET406, FRD0079, BR3782, A1228V1348
AllianceSBN 3782
Aftermarket3782HYT, 3782NTN, 3782TRB, BR3782SKF, 202 0003

Frequently asked questions

Does 3782 fit my truck?

Depends on the hub, not the brand of truck. This bore size and taper got used across a lot of different axle and hub combinations. Pull the old bearing and check for '3782' or '3720' stamped on it, or give us the VIN and we'll check the axle build sheet before you order.

Is this the same as the SKF BR3782SKF version?

Same bearing dimensions and taper spec — SKF just packages and stamps their own part number on the same physical piece. Cross-references clean, but if you're mixing a new SKF cone with an old cup from a different brand, don't. Replace the set together.

Do I need to replace the seal too?

Not automatically included with SET406 — the seal is a separate number based on your hub's seal bore and lip design. If the old seal's hardened or the lip's torn up, replace it while the hub's apart. Bring us the old seal or the number off it and we'll match it.

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.

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