Front Brake Disc ATE 24.0123-0103.1 – Honda Accord IV/V

ATE 24.0123-0103.1 is a front brake disc for Honda Accord IV and Honda Accord V models. It is a single disc, priced per item, with a 259 mm diameter, 23 mm maximum thickness, 21 mm minimum thickness, 34 mm height, and 4 holes.

Current ATE reference: 24.0123-0103.1. This disc cross-references Honda OEM numbers 45251-SM4-010, 45251-SM4-020, and 45251-SN7-E40.

Applications

OEM Numbers

Cross-references Honda OEM numbers:

• 45251-SM4-010
• 45251-SM4-020
• 45251-SN7-E40

When to replace / symptoms of wear

Fit a new disc if you notice any of these signs:

• Vibration or pulsation during braking.
• Steering wheel shake when braking from speed.
• Deep grooves, scoring, or heavy lip on the disc edge.
• Uneven pad contact marks across the friction surface.
• Blue spots, cracks, or strong corrosion.
• Brake pads wearing unevenly on the same axle.

Installation and service tips

Install the disc as a matched pair on the same axle if both sides are worn.

• Clean the hub face before fitting the new disc.
• Check brake pads and caliper hardware at the same time.
• Remove any transport oil from the disc before driving.
• Use the correct wheel and hub bolt pattern for the vehicle.
• After installation, bed in the pads with gentle braking first.

FAQ – frequently asked questions about ATE 24.0123-0103.1 front brake disc

Can I replace just one front disc?
No — front discs must always be replaced in pairs. Replacing only one side causes uneven braking and can pull the car to one side.

Do I need new pads when fitting new discs?
Yes — always fit new pads with new discs. Old pads have a worn surface that won't match the new disc, causing noise, vibration and uneven wear.

Do I need to clean the disc before fitting?
Yes. Remove the protective coating or transport oil from the friction surface before the first drive.