Ford C-Max Rear Springs: Specs, Fitment & Common Faults

A cracked spring insulator or a broken chunk of the coil itself is a genuinely common, well-documented cause of rear rattle on Ford's smaller platforms.

Illustration for editorial purposes

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A Genuinely Common, Specific Cause of Rear Rattle Worth Checking First

Across owner forums, a broken piece of coil spring insulator, or a small chunk of the spring itself, knocking around in the lower spring seat is a genuinely commonly reported cause of a rear rattle on the C-Max. It's worth visually inspecting the coil springs for any visible cracking or a broken end before assuming a more expensive fault is to blame.

A genuinely sensible diagnostic order: before assuming bushings or shocks are worn, it's worth visually inspecting the coil springs themselves for any visible cracking or a broken end — a genuinely common, cheap-to-fix cause that gets mistaken for expensive suspension wear.

Ford C-Max Rear Springs: A Part That Fails Quietly, Then Suddenly

A sagging Ford C-Max rear spring rarely gives dramatic warning — just a slightly reduced ride height over several months — before eventually failing suddenly at the coil's end with an audible clunk. Keep an eye out for one rear corner sitting lower than the other as an early tell.

Before you buy: engine/trim and body style both affect spring rate and fitment. Always confirm against your VIN before ordering.

Ford C-Max Rear Springs: Watch: Replacing It

🎬 Watch: How to change rear springs / rear coil springs on FORD FOCUS 2 (DA) [TUTORIAL AUTODOC]

Watch on YouTube ↗

This video shows a closely related car on the same platform, so the spring seats and fixings can differ slightly on yours.

OEM Part Number: confirm via VIN — rear coil springs (aftermarket) Monroe SP4278 / Abakus 234-02-026

Accuracy note: Covers the Ford C-Max (2010-2019) as listed in the UK aftermarket catalogues. Rear coil springs are sold as a pair for the axle and should be replaced as a pair, because a new spring beside a tired one leaves the car sitting unevenly. The right spring depends on the engine and gearbox, the suspension type (standard, sport or heavy-duty) and, on some cars, the body style. The references below are UK aftermarket catalogue listings for this generation, labelled by brand with the fitment details the catalogue gives; carmakers rarely publish the genuine number against these, so match a genuine spring against your VIN if you want a guaranteed fit. genuinely worth knowing: sportier trims often use a genuinely different rear axle design with a different spring and spring seat from standard cars — confirm your exact trim before ordering rather than assuming a universal fit.

Rear coil springs (aftermarket)	Monroe SP4278 (372 mm); Abakus 234-02-026; Daco Germany 811011 (360 mm); KYB K-Flex RA6199 (360 mm)
Genuine (OE) numbers quoted	None quoted in the catalogue listings — the genuine spring varies by engine, suspension type and body style, so order it against your VIN
Standard trims	Confirm your exact engine and trim, since Ford used multiple distinct rear spring references across most model generations
higher-output	A genuinely different spring and spring seat design from the standard version, reflecting a different rear axle architecture on the sportier trim
Estate/higher-load body style, where applicable	Genuinely a stiffer rear spring rate than the equivalent standard body style, to handle the increased load-carrying capacity

A single new rear spring on the Ford C-Max, next to an old, sagged one, creates an imbalance — uneven ride height and a handling bias — which is why replacing them as a pair is the better approach.

Ford C-Max Rear Springs: What It Does

On the Ford C-Max, bearing the rear end's weight and cushioning the initial jolt of a bump is the coil spring's role, complementing the shock absorber rather than duplicating its job. When it sags or breaks, ride height drops, headlight aim can be thrown off, and severe cases can mean an MOT failure.

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Ford C-Max Rear Springs: Warning Signs, DIY Difficulty & Aftermarket Advice

These are the same regardless of make or model — see our full Rear Springs Guide for symptoms of a failing spring, confirming fitment against your VIN, and OEM vs aftermarket guidance.

More Ford Rear Springs

The same part, covered across other Ford models.