Keep the rear brakes on your Mazda clamping smoothly with the ADVICS OE Replacement Disc Brake Rotor, MPN E6R400U. This rear disc brake rotor drops in as a direct-fit replacement for the 2014-2025 MAZDA 3 [All], 2014-2025 MAZDA 3 SPORT [All], 2019-2022 MAZDA CX-3 [All], and 2020-2025 MAZDA CX-30 [All]. It provides the friction surface your rear brake pads clamp against; if a worn, scored, or below-spec rotor is behind your rear braking complaint, this replaces it.
- High-carbon steel: built to OEM weight using high-carbon metallurgy to help maintain thermal stability, reducing opportunities for warping while supporting longer pad and rotor life.
- Corrosion protection: a corrosion-protection coating applied to match OEMs.
- Solid rotor: a solid (non-vented) design with a smooth, non-directional brake surface finish.
- Fitment specs: 265.0 mm (10.433 in) outside diameter, 39.0 mm overall height, 68 mm center hole, 114.3 mm (4.5 in) bolt circle, and 5 stud/lug holes. Nominal thickness 9.0 mm (0.354 in); discard thickness 7.0 mm (0.276 in). ABS tone ring not included.
Sold individually; order 2 for a complete rear-axle job. Replacing both sides together as a matched pair is recommended for even, balanced braking. Country of origin: China.
Interchange: 18A81500AC · YH507588 · 31797 · 77111 · 1407-507588 · 1407507588 · YH507588P · 121.45081 · BR901288 · B45G26251A · B45G26251B · BJS726251A · BKC326251 · 901288 · JBR1594 · 981500 · R45081 · BD180657E. Manufacturer part number E6R400U.
This part cross-references / interchanges with the following part numbers:
Frequently Asked Questions
Which vehicles does this rotor fit?
It is a direct-fit rear rotor for the 2014-2025 Mazda 3, 2014-2025 Mazda 3 Sport, 2019-2022 Mazda CX-3, and 2020-2025 Mazda CX-30 (All engines). See the Buyer's Guide tab to confirm your vehicle.
Is this a front or rear rotor?
The catalog lists this E6R400U as a rear rotor.
Is this rotor solid or vented?
It is a solid (non-vented) rotor with a smooth, non-directional brake surface finish.
Does it include an ABS tone ring or hardware?
No. The ABS tone ring is not included, so transfer or replace components as directed by the vehicle service procedure.
Do I need to buy two?
This rotor is sold individually, so order two for a complete rear axle. Replacing both sides together as a matched pair is recommended for even, balanced braking.
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