KNOLET Rear Wheel Hub Bearing Assembly 512401 – Rear Left & Right Fit for Subaru/Scion/Toyota, 5‑Lug OEM‑Fit Durable Steel

The KNOLET Pair 512401 rear wheel bearing hub assembly is a direct-fit replacement hub for select Subaru, Scion FR‑S, Toyota 86/GR86 models designed to restore smooth rotation and secure wheel mounting.

If your vehicle shows rear-wheel vibration, noise from the wheel area, or uneven wheel play, a worn hub assembly is a common cause. The KNOLET 512401 hub assembly matches OEM dimensions and reference numbers so you can replace both left and right rear hubs with confidence. Built from high-hardness forged carbon steel and finished with a protective coating, these hubs are engineered for durability, lower friction and straightforward installation.

Which vehicles does this hub assembly fit?

This KNOLET 512401 assembly fits many RWD and AWD Subaru and Toyota platforms as well as Scion FR‑S. Always confirm fitment by selecting year/make/model or checking the vehicle compatibility list before ordering.

• Scion FR‑S: 2013–2016
• Subaru BRZ: 2013–2019; Subaru 86: 2017–2020; GR86: 2022–2023
• Subaru Crosstrek: 2019–2021; Forester: 2009–2013
• Impreza/Impreza Sport: 2008–2014; Legacy & Outback: 2010–2014; WRX/WRX STI: 2013–2014

How does this hub improve driving feel and safety?

Replacing a worn hub assembly removes play and restores stable wheel mounting, which reduces steering or wheel vibration and eliminates many common wheel noises. The precision manufacture and premium seals help keep grease in and contaminants out, improving longevity under normal driving conditions.

• OE-style dimensions for correct wheel alignment and bearing preload
• Premium sealing to reduce contamination and grease loss
• High-hardness forged carbon steel for impact resistance
• Protective coating to resist moisture and corrosion

What are the key specifications and part references?

This assembly is made for rear left and right positions, with measurements matching the listed OEM references to ensure compatibility. It does not include an ABS sensor; confirm your vehicle’s ABS setup before purchase.

• Position: Rear left and right axle
• Flange diameter: 4.88"; Bolt circle diameter: 3.94"
• Hub pilot diameter: 3.31"; Brake pilot diameter: 2.28"
• Wheel stud quantity: 5; Flange bolt holes: 4; ABS sensor: not included
• Reference part numbers: 28473AG000, 28473AG001, 28473AJ00A, 28473FG000, 28473FL020, 28473SC000, SU00307348

How straightforward is installation and what should I expect?

The KNOLET hub assembly is manufactured to match OEM style dimensions for a relatively quick replacement when performing a rear hub swap. Proper tools and torque specifications are required; if you’re unsure, professional installation prevents damage and ensures safety.

• Designed for direct-fit replacement on confirmed compatible vehicles
• Precision fit reduces installation time and alignment issues
• Recommended: professional press or hub removal tools and torque wrench
• Check wheel bearings, studs and axle components during replacement

Who is this for: The KNOLET 512401 rear hub pair is aimed at DIY mechanics, independent shops and fleet maintainers who need an OEM-dimension replacement hub for late‑model Subaru BRZ/Impreza/Forester/Crosstrek/Legacy/Outback/WRX and Scion FR‑S or Toyota 86/GR86 vehicles. Choose this part when you need corrosion-resistant construction, reliable sealing against contaminants, and the correct bolt/stud pattern for five‑lug rear wheels. Always verify vehicle compatibility before ordering to ensure an exact fit.