2Pcs 512347 Rear Wheel Bearing Hub Assembly Fit for Mazda 3 and Mazda

In this review of the 2Pcs 512347 rear wheel bearing hub assembly, the bottom line is straightforward: this part is for Mazda 3 and Mazda 5 owners who need a ready-to-install rear hub with ABS compatibility and reliable sealing. The reviewer found it most appealing for DIY mechanics or independent shops because the unit arrives pre-lubricated and sealed, eliminating bearing preload adjustments and reducing installation time. Verification of vehicle fit is essential before purchase, but once compatibility is confirmed the hub's sealed design and rust protection on studs make it a practical replacement choice.

Key Features

• Vehicle compatibility: Fits 2004-2013 Mazda 3 and 2006-2010, 2012-2017 Mazda 5 models when matched to the listed interchange numbers, saving time checking fit.
• Pre-lubricated and sealed: The assembly arrives ready for use so there is no need for bearing clearance adjustments during installation, reducing workshop steps.
• High load-bearing capacity: The compact roll-form bearing design maintains preload to reduce noise and vibration under normal driving loads.
• Advanced seals: Quad-lip seals resist moisture and dirt ingress, helping to extend service life in wet or dusty conditions.
• Rust-protected studs: Coated wheel studs inhibit corrosion so proper torque retention is more likely over time.
• ABS sensor ready: Includes ABS sensor compatibility so no additional components are required for equipped vehicles.

Who It's For

This hub assembly is aimed at Mazda 3 and Mazda 5 owners doing a rear hub replacement who want a sealed, pre-assembled unit that simplifies installation. It is also a good fit for independent mechanics who prefer replacement hubs with OE interchange references to verify matching to the vehicle.

It is less suitable for someone who has a vehicle outside the listed model years or who needs a hub without an ABS tone ring. Buyers who are unsure about fit should confirm using the vehicle fit tool or match the OE numbers before purchasing to avoid returns.

Pros & Cons

Pros

• Pre-lubricated and sealed design reduces installation steps and initial break-in concerns.
• Quad-lip sealing and rust-protected studs improve durability in real-world conditions.
• Roll-form design maintains preload to minimize noise and vibration during driving.

Cons

• Requires careful fit confirmation to the listed model years and OE interchange numbers before purchase.
• Not intended to be disassembled or serviced, so the entire unit must be replaced if damaged.

Specifications

Compatible models	2004-2013 Mazda 3; 2006-2010, 2012-2017 Mazda 5
Flange diameter	5.59 in
Bolt circle diameter	4.5 in
Hub pilot diameter	2.91 in
Number of bolts	5
Brake pilot diameter	2.83 in
ABS	Yes

Our Verdict

The 2Pcs 512347 rear wheel hub assembly is a pragmatic replacement for compatible Mazda 3 and Mazda 5 models, offering a pre-lubricated, sealed unit with ABS compatibility and corrosion-resistant studs. For owners who confirm fit with the listed interchange numbers, it saves installation time and reduces variables during replacement, making it a good value for DIYers and repair shops who need a straightforward, durable hub swap.

Frequently Asked Questions

Will this hub fit my Mazda?
Check the vehicle fit by entering year, make, model and trim or match the OE interchange numbers listed for compatibility before purchasing.

Does the unit include ABS tone ring?
Yes, the assembly is ABS sensor compatible as specified.

Can the bearing be disassembled for service?
No, the bearing is sealed and pre-lubricated and should not be disassembled; replace the entire hub if service is needed.