Model 3/Y: wheel hub bearings, which brand to buy (SKF/SNR/FAG/NSK vs noname) and how to replace

Summary

Tesla M3/Y uses pre-assembled hub units with bearings (wheel hub assembly): the bearing isn't replaced separately, the whole unit goes in with the wheel flange and the ABS magnetic encoder. Brand matters: top manufacturers (SKF, SNR, FAG/INA, NSK, Timken) last 100–150 thousand km, while an unbranded AliExpress casting may start humming within a season. A Model 3 built after July 2019 and a 2020–2024 Model Y use the same family of hubs; what differs is front RWD, front AWD and rear. Factory hubs last 115–200 thousand km in owners' experience, and they usually fail in pairs.

Symptoms / Diagnosis

• An airplane-cabin hum that grows with speed and is loudest at 60–110 km/h.
• The tone changes, or the hum fades, in a long turn or a lane change: the load shifts to the other side.
• The hum follows road speed, not the pedal: at a given speed it is there both under power and when coasting. If it hums only under power or regen and goes quiet when coasting, suspect the drive unit too: on a 2021 Model Y with that exact symptom, the shop found the hubs fine (#49495, #59073).
• On a smooth straight road it is louder than on rutted or coarse asphalt, where tire noise masks it.
• Finding it by hand: spin the lifted wheel with one hand on the spring or strut. A humming bearing vibrates.
• A badly worn hub has play when you rock the wheel at 12 and 6 o'clock, and the tire starts wearing unevenly (#270816).
• The instrument cluster may show an ABS error: the magnetic encoder on the hub picks up metal debris or gets damaged, and the wheel speed sensor goes haywire (#189851).

Checklist: is it really the wheel bearing?

Before you buy a hub, rule out the things that hum the same way. In the owners' chat, people have bought hubs for nothing: the noise came from the tires (#498125, #413726), and once from a door window that had slipped out of its track and hummed above 60 km/h (#418630).

Three more things owners have noticed. The hum often seems to come from the wrong side: it sounded like the left from inside the car, but the right hub was the bad one (#236343). A hub with play may not hum at all while its neighbor does (#460887). And in Tow Mode the car fairly quickly locks the wheels and drops back into Park, so you won't check all four wheels in one go; just repeat the procedure (#52397). If it turns out to be tire noise, see tire choice.

What to do

1. Diagnosis. Lift the car, switch on Tow Mode, spin the lifted wheel by hand with your other hand on the spring or shock: a humming bearing vibrates. Rock the wheel at 12 and 6 o'clock: if there's play, it is the hub bearing (or the hub plus a worn ball joint, which you rule out separately). A test drive with a phone microphone near the wheel arch also helps find the side. The full checklist is above.

2. Repair options. On M3/Y it is assembly replacement only. There is no "pull out the balls and repack with grease": the unit is sealed, and taking it apart ruins the geometry.

   • Tesla OEM: the most expensive, ≈ $220+ at the dealer (#49016). A new one is practically impossible to get in Belarus, only used ones from salvage cars (#414603).
   • NSK is the assembly-line supplier of hub bearings for M3/Y (SKF supplies the S/X line): the same bearing, just without Tesla packaging. SKF, SNR, FAG/INA, Timken are quality aftermarket parts, not assembly-line ones, but in the same class. This is the best choice on price and quality.
   • Economy aftermarket (A-Premium, MOTORMAN) may be fine, but with no guarantee on lifespan.
   • AliExpress no-name is a lottery with a high chance of losing.

3. Choosing the part. Tesla part numbers and equivalents are in the table below, in the "Model 3/Y hub assembly part numbers" section. The front hub differs between RWD and AWD: on AWD it has splines for the halfshaft (#51476). ⚠ Important: pre-refresh Model 3 built before July 2019 has a diameter difference (142 mm vs 150 mm), so buy by VIN, otherwise you'll quickly destroy the bearing.

4. AliExpress note. Don't save money on a hub bearing: it is a rotating, loaded unit, and it carries the ABS magnetic encoder. A separate risk is a cheap "original" from the market: one owner's $90 hub died after 3 months and ate a tire, while the genuine part costs more at the dealer (#270816, #270818, #270820). Buy SKF/SNR/FAG/NSK at any decent online parts store. In Belarus most owners fit Patron: it has a warranty and is certainly not a fake (#270819). Only if money is really tight, get a mid-tier brand (Ruville, Optimal), but not an unbranded box with no logo.

Model 3/Y hub assembly part numbers (front/rear, RWD/AWD)

Tesla sells the bearing only as part of the hub, so you search by the hub assembly number. The numbers below come from parts sellers' catalogs and owners' experience; check the final number against your VIN in Tesla's parts catalog.

• The letter at the end (-D, -E, -F) marks the part revision. Check by VIN whether a different revision fits your car: on a Model 3 built before July 2019 the flange diameter may differ (see below).
• 142 or 150 mm. According to sellers (EVANNEX), a Model 3 built before July 15, 2019 has a 142 mm hub flange, later cars have 150 mm. Model Y production started in 2020, so it only has the 150 mm version. Catalogs get confused here: for 1044121-00-E, EVANNEX gives both 142 mm and model years 2017–2023. Check the number against your VIN and measure the hub you take off.
• Model S/X uses a different unit for the 5×120 bolt pattern: Tesla 1027170-00-B (EVANNEX), equivalent SKF BR931008; it does not fit a 3/Y. For the weak spots of the S/X rear suspension, see toe links and bushings.

Model Y vs Model 3: is it the same hub?

For a Model 3 built after July 2019 and a 2020–2024 Model Y, effectively yes, it is one family of parts:

• The wheel fitment is identical: 5×114.3 bolt pattern and 64.1 mm center bore (Tesla wheel and tire sizes).
• In Tesla's service manuals, the rear hub replacement on the 2017–2023 Model 3 and the 2020–2024 Model Y uses the same correction code, 31030702, with the same 0.48 hr flat-rate time, the same three bolts at 85 Nm and the same 300 Nm axle nut (Model 3, Model Y).
• Sellers list the front RWD hub 1044122-00-E (150 mm) as one part for both Model 3 and Model Y (Tesery).
• Model Y production started in 2020, so it never had the early 142 mm hub: that caveat applies only to a Model 3 built before July 15, 2019.

The difference is by drivetrain, not by model. A front RWD hub (no splines) and a front AWD hub (splined) are not interchangeable, and Tesla gives the front AWD and rear hubs different numbers (1044121 and 1044123), even though some aftermarket brands sell one unit as "front AWD and rear". For the Model 3 Highland (2024+) and Model Y Juniper (2025+) there are few aftermarket cross-references so far, so order by VIN. And don't extend this to the rest of the suspension: one owner fitted a Model 3 control arm to a Model Y along with a new hub and got an off-center steering wheel and an ESP warning until he swapped in the correct arm (#483902). More on how the arms differ in the lower ball joints article.

How long Tesla wheel bearings last

Tesla does not publish a service life, but owners' experience gives a fair picture:

• Factory hubs: front ones started humming at 115–125 thousand km (#491386, #54493, #363694); on other cars the originals lasted 140–200 thousand km (#405059, #405057).
• Patron (the most common replacement in Belarus): 40 thousand km on a Model Y and a Model 3 AWD with no complaints (#362421, #231661), and one owner has run them for 60–75 thousand km (#363659, #414603). Failures happen too: on a Model S one started rattling after about 15 thousand km, and the shop refunded it on the VIN and receipt (#408782).
• A hard impact on a pothole, a curb or in a crash can kill a hub at any mileage (#491379).
• The front hubs usually go first (#491391), and they tend to fail in pairs: one owner replaced one, and both turned out to be humming (#54493, #461104).

Cost (Minsk shop prices)

Prices in BYN (2024–2026). The local market swings. Patron cost 120 BYN (#414275) and 135–137 BYN in December 2025 (#363659, #372599). In May 2026 direct supply dried up: the price rose to 240–285 BYN, and the part came through resellers from Russia in about 11 days (#450902, #450903, #450908). By August 2026 Patron was back in stock at ~150–157 BYN (#486790, #497909). FAG could not be found in stock below 600 BYN per unit (#451329). The new units you can actually buy in Belarus are Patron, NTY, GSP, HERTH+BUSS, Optimal, SWAG and Metzger; new OEM hubs are not sold there (#363674). A brand-name hub in Belarus works out noticeably more expensive than the $80–140 worldwide reference, so budget with the local price, not the catalog one. In spring 2026 parts sellers reported hubs failing en masse (#450896).

Budget for a pair right away. Hubs run as a pair and die as a pair: one owner replaced one and realized the second was humming as soon as he pulled out of the shop, which meant a second visit, a second labor hour and another wait for the part. Two Patrons cost less than one used original, so owners advise replacing both front hubs at once (#450900, #414607).

DIY notes

The general order from the Tesla service manual (not step-by-step):

• Lift the car and remove the wheel. At the rear, enable EPB Service Mode first and unplug the electric parking brake connector on the caliper: a Model 3/Y has no parking brake cable.
• Remove the brake caliper with its bracket and hang it on a hook; don't twist or pull the brake hose. The caliper bolts are single-use: fit new ones at 94 Nm front, 83 Nm rear.
• Undo and discard the axle nut (32 mm socket, very high torque, so you need a long breaker bar or an impact gun).
• On AWD fronts and on every rear hub, the halfshaft sits in the hub splines and may seize. Tesla pushes it out with a hydraulic puller mounted on the wheel studs; in a home garage a drift through an old bolt helps. Don't hit the hub itself.
• Remove the brake disc (often seized; an M6 bolt in the threaded hole pushes it off; the disc screw takes 5 Nm).
• Undo the 3 hub-to-knuckle bolts (18 mm socket); torque 85 Nm on installation, and the bolts can be reused. If the hub has seized to the knuckle so badly that you risk tearing the CV boot, the manual has said since November 2025 to remove the knuckle first. The Model Y 2025+ manual listed 115 Nm until June 2026; it now says 85 Nm as well.
• Before installing, check the magnetic ABS ring on the back side: Tesla checks it with a magnetic field viewer card and replaces the hub if the ring is damaged; metal debris stuck to it means ABS errors.
• Don't grease the halfshaft splines: the manual forbids it (since February 2026 it explains that grease can stop the hub from seating fully and attracts dirt). About 1 g of Molykote M-77 paste is allowed only on the halfshaft face that seats against the hub. Owners in the chat argue about this, but that is Tesla's official position (#460889).
• Axle nut: always a new one, 300 Nm front and rear per the current manual editions (older editions and tmodel3.com said 245 Nm), no extra tightening to a mark. A loose axle nut makes noise of its own: on a Model S the hum went away once the hub nuts were tightened (#104812).
• After the job, check Tesla's tables to see whether you need an alignment check or an EPAS calibration (suspension calibration in Service Mode).
• Often, though not always (every Tesla is different), you don't need to disconnect the 12V battery, but if you get an ABS error after assembly, a brief 12V disconnect (about 5 minutes) sometimes helps.

Links / Sources

• Tesla Service Manual: Hub - Rear - LH, Model 3 2017–2023 (85 Nm, 300 Nm, no grease on splines)
• Tesla Service Manual: Hub - Front - LH (Dual Motor), Model 3 2017–2023
• Tesla Service Manual: Hub - Front - LH (RWD), Model 3 2017–2023
• Tesla Service Manual: Hub Assembly - Front - LH (Dual Motor), Model 3 2024+
• Tesla Service Manual: Hub - Rear - LH, Model Y 2020–2024
• Tesla Service Manual: Hub - Front - LH (AWD), Model Y 2025+
• EVANNEX Wheel Hub Bearing Kit (150 mm): fitment guide
• EVANNEX / PFI PHU54121K: cross-reference to 1044121-00-E
• EVANNEX: front RWD hub, 1044122-00-E
• EVANNEX: Model S/X hub, 1027170-00-B
• EV Parts Online: front M3 AWD hub
• PartsGeek: NSK 66BWKH42 for Model 3 (2017–2023)
• SKF BR931008 Hub Bearing Assembly
• tmodel3.com: Halfshaft (Front Drive Unit) R&R, axle nut torque 245 Nm (older edition)
• TightTorque: Tesla Model 3 torque specs
• Brake & Front End: Tesla Wheel Bearing Replacement
• YouTube: Save Hundreds! Tesla Model 3 & Model Y Wheel Bearing Replacement DIY
• YouTube: Tesla Model 3 Front Wheel Hub Bearing Replacement DIY By EVANNEX

Community experience

From the archive of the TESLA owner's group BELARUS chat. Wheel hub bearings come up regularly, both "how does it sound" and "where do I get one". In 2026 the chat discussed hubs more often than in 2023 and 2024 combined.

Additional fixes from the chat:

1. The airplane sound. As one owner put it: "It will hum like in an airplane if it's the hub. Anything quieter is hard to hear, the car is noisy" (#49494). If road and tire noise is loud, an early-stage hub bearing is easy to miss.
2. A hum on acceleration and regen that disappears at steady speed is not always the hub. On a 2021 Model Y with exactly that symptom, the shop found the hubs fine, and the owner went looking for the noise in the rear drive unit (#49495, #59073).
3. Belarus pricing is real: "OEM hub at the dealer is 220+, here we have it with a margin at 80–110" (#49016). Through local Tesla shops you can find quality aftermarket units at half the dealer price.
4. A new original is not available in Belarus, and a used one from a salvage car with 40–70 thousand km on it is a poor bet: a Patron with a warranty is the safer choice (#414603).
5. A suspiciously cheap "original" is the main risk: a $90 hub died after 3 months and ate a tire, which is why owners recommend Patron with a warranty (#270816, #270819).

Discussion in Telegram: #49494, #54493, #231661, #450900, #460885