Citroen C3 Brake Discs: Specs, Fitment & Wear Symptoms

Confirmed: a genuine Citroën Technical Bulletin fixes a specific rear brake sticking fault — plus an honest caveat, and a real consumer-rights point about aftermarket parts and warranties.

Illustration for editorial purposes

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OEM Part Number: 4246X8 (genuine front disc — confirm via VIN) — aftermarket front discs Brembo 09.8695.14 / Bosch 0 986 478 618

Accuracy note: Covers the Citroen C3 (2016-) as listed in the UK aftermarket catalogues. Front brake discs are sold by diameter and thickness, and most models have two or three disc sizes depending on engine, brake size and trim — a 278 mm disc will not fit a car built with 300 mm brakes, so the caliper carrier and the disc must match. The references below are UK aftermarket catalogue listings for this generation, labelled by brand with diameter x thickness in mm; genuine numbers are shown only where a listing quotes one. Measure the old disc or check the brake size against your VIN before ordering, replace discs in pairs with new pads, and scrap any disc at or below its minimum thickness.

Front brake discs (aftermarket)	Brembo 09.8695.14 (266 x 22 mm, vented, 4 holes, Prime line); Brembo 09.9619.11 (283 x 26 mm, vented, 4 holes, coated, Prime line); Bosch 0 986 478 618 (266 x 22 mm, vented, 4 holes, coated, ECE-R90); Bosch 0 986 478 979 (282.6 x 26.1 mm, vented, 4 holes, coated); TRW DF4184 (266 x 22 mm, vented, 4 holes, painted, high-carbon); TRW DF4183 (283 x 26 mm, vented, 4 holes, painted, high-carbon); ATE 24.0122-0194.1 (266 x 22 mm, vented, 4 holes, coated); ATE 24.0126-0120.1 (283 x 26 mm, vented, 4 holes, coated)
Disc sizes & variants	Two front sizes are listed, 266 x 22 mm and 283 x 26 mm, both vented with four holes on a 108 mm bolt circle. The 266 mm disc is the standard fitment on the smaller petrol and diesel engines; the 283 mm disc is used on the higher-output versions. No solid front disc is listed for this generation.
Genuine (OE) numbers quoted	4246X8 (genuine front disc number for this model — confirm via VIN, as several disc sizes exist)
Fitment notes	Minimum thickness is 20 mm for the 266 x 22 mm disc and 24 mm for the 283 x 26 mm disc. All discs mount on a 66 mm centring bore. Confirm the fitted size from the existing disc before ordering, as the listings are not tied to specific engines.

Confirmed: A Genuine Citroën Technical Bulletin Covers a Specific Sticking Fault — Citroen C3 Brake Discs

If you're experiencing a distinct crunch or clunk when pulling away after releasing the handbrake, this is genuinely worth knowing: Citroën has a documented Technical Service Bulletin covering exactly this fault, involving fitting steel brake shields to the rear discs. These shields are specifically designed to prevent mud, grit, and road debris from building up and binding against the disc, which causes the pad to bind slightly in the carrier and produces the characteristic crunch on release. Multiple owners confirm dealers fitting these shields under warranty once the fault was recognised — worth asking your dealer directly whether this fix has been applied to your car if you're experiencing this specific symptom.

An honest caveat worth knowing: the shields address the sticking and crunching symptom specifically, but don't necessarily solve the underlying rear disc corrosion problem — one owner who had the shields fitted still found the discs badly pitted, grooved, and rusted a few months later, describing it as "the worst I have ever seen" despite the shields being in place. If you're dealing with both symptoms, it's worth treating them as two separate issues rather than assuming the shield fix alone resolves everything.

It's also genuinely worth knowing your consumer rights here: fitting quality aftermarket discs and pads (Brembo is specifically and repeatedly recommended by owners as resolving the corrosion problem where standard-fit discs kept rusting) does not invalidate an extended warranty — warranty conditions relate to the car being serviced according to schedule, not to exclusively using manufacturer-branded parts, and a dealer cannot legally enforce a parts-only restriction as a condition of warranty coverage.

Citroen C3 Brake Discs: Watch: Replacing It

🎬 Watch: Step-by-Step Guide to Changing Brake Discs and Pads on a Citroen C3. (older gen)

Watch on YouTube ↗

Generation not confirmed (no clear 2016+ Mk3 front-brake video surfaced); axle not stated in title; alt https://www.youtube.com/watch?v=DABXBsfhC90

Citroen C3 Brake Discs: The Part That Pads Depend On

On the Citroen C3, 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.

Before you buy: disc size and design vary by trim, engine size and whether your car has the standard or "sport" brake package. Always confirm against your VIN before ordering.

Citroen C3 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 C3 typically use bigger discs than standard versions to handle the additional heat generated by more aggressive braking.

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Citroen C3 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 Citroen Brake Discs

The same part, covered across other Citroen models.