Volvo XC90 Rear Springs: Specs, Fitment & Common Faults

Genuinely worth knowing: Volvo built the same XC90 with light, medium, and heavy rear spring variants — identified by a factory chassis code, not by trim level.

Illustration for editorial purposes

A Genuinely Granular Factory Customization System Worth Knowing

Genuinely important to establish before ordering: Volvo used a "Chassis Code" system (found on the product plate, usually in the engine bay) to identify exactly which spring variant was fitted at the factory, including genuinely different light, medium, and heavy rear spring rates for the same model — a more granular system than simply checking trim or engine size. There's also a separate "auxiliary spring" fitted alongside the main coil spring on some variants, a genuinely distinct helper component rather than part of the main spring itself.

Genuinely worth knowing about suspension technology: on air-suspension-equipped generations, there's no conventional coil spring to replace at the rear at all — the air spring is integrated into the strut assembly instead.

A Part That Fails Quietly, Then Suddenly

A rear spring often sags gradually for months without an obvious symptom beyond a slightly lower ride height, then fails suddenly at the coil's end with an audible clunk — worth bearing in mind if you notice one rear corner sitting lower than the other.

Before you buy: chassis code (light/medium/heavy), drivetrain, and suspension technology (standard/air) all affect fitment. Always confirm against your VIN and product plate before ordering.

OEM Part Numbers

Accuracy note: genuinely worth knowing: check your product plate's chassis code before ordering — it identifies the exact light/medium/heavy spring variant fitted at the factory more precisely than trim level alone.

Light-duty spring (per chassis code)	Genuinely a different spring from the medium and heavy variants below — confirm your exact chassis code before ordering
Medium-duty spring (per chassis code)	A genuinely different spring from both the light and heavy variants
Heavy-duty spring (per chassis code)	A genuinely different, stiffer spring again — commonly paired with Nivomat self-levelling rear shocks on older generations
Auxiliary spring, where fitted	A genuinely separate helper component from the main coil spring, not a replacement for it

Always replace rear springs in pairs — a single new spring paired with an old, sagged one on the other side creates an uneven ride height and handling bias.

What It Does

The rear coil spring supports the weight of the car's rear end and absorbs the initial impact of a bump, working alongside the shock absorber rather than replacing its function. A sagged or broken spring lowers ride height, can affect headlight aim, and in severe cases is an MOT failure item.

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 Volvo Rear Springs

The same part, covered across other Volvo models.

Volvo XC90 Rear Springs: Specs, Fitment & Common Faults

A Genuinely Granular Factory Customization System Worth Knowing

OEM Part Numbers

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