Citroen C4 Cactus Brake Discs: Specs, Fitment & Wear Symptoms

On the C4 Cactus, a genuine Citroën Technical Bulletin fixes a specific rear brake sticking fault — plus a real consumer-rights point about aftermarket parts and warranties.

Illustration for editorial purposes

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OEM Part Number: 1618890380 (genuine front disc — confirm via VIN) — aftermarket front discs Brembo 09.8695.11 / Bosch 0 986 478 979

Accuracy note: Covers the Citroen C4 Cactus (2014-2020) 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 09.8695.11 (266 x 22 mm, vented, 4 holes, coated, Prime line); Brembo 09.9619.11 (283 x 26 mm, vented, 4 holes, coated, Prime line); Bosch 0 986 478 979 (282.6 x 26.1 mm, vented, 4 holes, coated, ECE-R90); TRW DF4184 (266 x 22 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); Ferodo DDF1140 (266 x 22 mm, vented, 4 holes, Premier, R90)
Disc sizes & variants	Three front variants are listed: a 266 x 13 mm solid disc (Ridex 82B0657, for the lowest-powered early cars), the common 266 x 22 mm vented disc, and a 283 x 26 mm vented disc for the more powerful engines. All use four holes on a 108 mm bolt circle with a 66 mm centring bore.
Genuine (OE) numbers quoted	1618890380 (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. A drilled Brembo Xtra 09.8695.1X and a slotted Brembo 09.8695.75 are also available in 266 x 22 mm. Check whether the car has solid or vented fronts before ordering.

Confirmed: A Genuine Citroën Technical Bulletin Covers a Specific Sticking Fault — Citroen C4 Cactus 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, 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 C4 Cactus Brake Discs: Watch: Replacing It

🎬 Watch: Comment Changer les Freins de votre Citroën C4 Cactus en 5 Étapes Simples (non-english)

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French, exact model; title says "freins" so disc content not confirmed. English mOECTSfqC-4 is pads only.

Citroen C4 Cactus Brake Discs reference plate

Citroen C4 Cactus Brake Discs: The Part That Pads Depend On

On the Citroen C4 Cactus, because discs and pads wear as a pair, neglecting one speeds up wear on the other — which explains why a routine pad change so often turns up discs that are further gone than expected.

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 C4 Cactus 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 C4 Cactus typically use bigger discs than standard versions to handle the additional heat generated by more aggressive braking.

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Citroen C4 Cactus 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.