Lexus IS Rear Springs: Specs, Fitment & Common Faults

Hybrid and non-hybrid versions carry genuinely different weight, and the rear spring rate reflects that.

Illustration for editorial purposes

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A Part That Fails Quietly, Then Suddenly

On the Lexus IS, rear spring sag tends to creep in gradually over months, with little more than a slightly lower ride height to show for it, before ending suddenly at the coil's end with an audible clunk — worth remembering if one rear corner starts sitting noticeably lower than the other.

Before you buy: hybrid vs non-hybrid and left/right side both affect fitment. Always confirm against your VIN before ordering.

Lexus IS Rear Springs: Watch: Replacing It

🎬 Watch: Lexus IS200 2000 rear shock absorber and coil spring removal and replacement

Watch on YouTube ↗

This video is of an earlier generation of the same model; the job is similar but the spring seats and fixings can differ slightly.

OEM Part Number: confirm via VIN — no aftermarket rear spring listed for this generation

Accuracy note: Covers the Lexus IS (2013-) 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: rear springs are sold in left/right pairs matched to a specific rate marking — confirm the marking on your existing spring rather than assuming from trim or powertrain alone.

Rear coil springs (aftermarket)	No aftermarket rear coil spring listed for this generation — order genuine against your VIN
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
Petrol/non-hybrid, standard rate	Genuinely a different spring from the hybrid version below — confirm powertrain and side before ordering
Hybrid	A genuinely different spring rate from the non-hybrid version, reflecting the different weight distribution of the hybrid drivetrain
F Sport, where fitted	A genuinely different, stiffer spring from standard trims

The Lexus IS's rear springs should always go in as a pair — fitting one new spring alongside an old, sagged one on the opposite side leaves the car sitting unevenly and biases how it handles.

Lexus IS Rear Springs: What It Does

On the Lexus IS, supporting the rear end's weight and absorbing the first impact of a bump is the rear coil spring's job, working alongside the shock absorber rather than doing its job for it. A sagged or broken spring drops ride height, can throw off headlight aim, and in serious cases fails an MOT outright.

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Lexus IS 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 Lexus Rear Springs

The same part, covered across other Lexus models.