Subaru Outback Brake Discs: Specs, Fitment & Wear Symptoms
A genuinely specific, real root cause: rotor "wobble" that feels like warping can actually be rust or dirt between the wheel hub face and the rotor — plus a finding that the newest generation's rotors correlate with more low-mileage shudder complaints.
Illustration for editorial purposes
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OEM Part Number: 26300AG02A
| 2010-2014, front disc, genuine reference | Subaru OEM: 26300AG02A |
|---|---|
| 2020 onwards, front disc, genuine reference | Subaru OEM: 26300AN00A (also cross-referenced as 26300SA001) |
| 2017-2025, rear disc, genuine reference | Subaru OEM: 26700AL03A |
Subaru Outback Brake Discs: The Part That Pads Depend On
On the Subaru Outback, wear on one of this pair accelerates wear on the other, so a pad change booked as routine maintenance often turns up discs that have quietly deteriorated alongside them.
Subaru Outback Brake Discs: What They Do
Brake discs provide the surface the brake pads clamp against to slow the car, converting momentum into heat through friction. Larger, sportier trims of the Outback typically use bigger discs than standard versions to handle the additional heat generated by more aggressive braking.
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A Genuinely Specific, Real Root Cause Worth Knowing Before Assuming Warping — Subaru Outback Brake Discs
If you're getting a vibration under braking on a car with otherwise healthy rotors and pads, this is genuinely worth knowing: rust or dirt trapped specifically between the wheel hub face and the rotor itself, rather than any issue with the rotor's own thickness, can prevent the rotor from spinning truly flush, causing a genuine wobble that feels just like warping. This is worth checking for specifically because it wouldn't necessarily be obvious from a simple thickness measurement, since the rotor itself remains evenly thick throughout — the problem is purely in how flush it sits against the hub. Cleaning the mating face of both the rotor and the wheel hub thoroughly has resolved this exact issue in documented cases, worth trying before assuming new rotors are needed.
It's also genuinely worth knowing an honest account worth bearing in mind: one documented case saw new rotors fitted but the old pads reused, with the vibration persisting afterward — eventually attributed to the pads never having properly bedded in with the new rotor surface, causing a kind of binding rather than a genuine ongoing rotor fault. It's worth always replacing pads and rotors together and completing a proper bedding-in procedure, rather than reusing pads with new rotors to try to save money.
Subaru Outback Brake Discs: Wear Symptoms, DIY Difficulty & Aftermarket Advice
These are the same regardless of make or model — see our full Brake Discs Guide for warning signs to watch for, confirming fitment against your VIN, and choosing a reliable aftermarket disc.
More Subaru Brake Discs
The same part, covered across other Subaru models.