Keep the rear wheels turning smoothly and quietly with the Mevotech Supreme Rear Wheel Bearing and Hub Assembly MB50319. It installs as a direct-fit replacement for the listed applications: the 2017-2021 Buick Envision, 2017-2019 Buick LaCrosse, 2018-2020 Buick Regal Sportback, 2018-2020 Buick Regal TourX, 2020-2024 Cadillac CT4, and 2016-2025 Chevrolet Malibu. See the Buyer's Guide tab for engine-specific coverage.
This integrated hub-and-bearing unit supports the wheel, lets it rotate on a sealed bearing, and provides the mounting surface for the rotor and wheel. Worn units often signal replacement with a humming or growling noise that changes with speed, roughness or play in the wheel, or an ABS fault when the wheel-speed signal is disrupted.
Interchange: 730-3420 · 70-512661
7303420 · 70512661 · WE61797 · 13543412 · 13507017 · 13526967 · 512575 · 512661 · PBR930988 · BR930988 · WA512575 · WA512575HD · WA512661 · WA512661HD
This part cross-references / interchanges with the following part numbers:
What does this assembly do?
It supports the wheel, allows it to rotate on a sealed bearing, and provides the mounting surface for the rotor and wheel on the rear of the vehicle.
Which vehicles does the MB50319 fit?
It's a direct-fit replacement for the 2017-2021 Buick Envision, 2017-2019 Buick LaCrosse, 2018-2020 Buick Regal Sportback and TourX, 2020-2024 Cadillac CT4, and 2016-2025 Chevrolet Malibu. See the Buyer's Guide tab.
What are signs this hub may need replacing?
A humming or growling noise that changes with speed, roughness or play in the wheel, or an ABS warning light. Have the cause diagnosed before replacing.
Does it come pre-greased and sealed?
Yes. It's pre-filled with premium grease designed for high temperature and extreme pressure, and uses a multi-point seal to help keep contaminants out and grease in.
Should I replace both sides at once?
This listing is for one assembly. If the opposite side shows similar wear, many technicians replace it as well; follow the vehicle service information for guidance.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
