Parts for your 2003 Toyota Caldina-Coil springs

2003 Toyota Caldina Coil Springs — What They Do and How to Look After Them

Yes, coil springs are absolutely used on the 2003 Toyota Caldina. Technical sources such as the Toyota New Car Features documentation for the T240 series and the Toyota Electronic Parts Catalog (EPC) list coil springs for both axles. The front uses a MacPherson strut with a coil spring, while the rear is coil-sprung too—torsion beam on most 2WD variants and multi-link on 4WD/GT-Four models. The EPC shows front spring part prefixes starting 48131-xxxxx and rear spring prefixes 48231-xxxxx for ST246 (3S-GTE 4WD), AZT241/246 (2.0/2.4), and ZZT241 (1.8) models, confirming they’re standard equipment. Major aftermarket catalogues for the Caldina also specify replacement coil springs, backing up the factory data.

On a 2003 Caldina, the coil springs carry the wagon’s weight, set the ride height, and keep the tyres planted over rough Aussie and Kiwi roads. Working with the struts/shocks, they soak up bumps and help the car track straight with a load in the boot. When springs get tired or damaged, the car can sit low, lean in corners, or bounce more than it should—none of which is ideal for safety or tyre wear.

For servicing, it pays to give the coil springs a look whenever the Caldina’s up on a hoist:

• Check for chips, rust flaking, or a broken “pigtail” end, and listen for clunks over speed bumps.
• Measure ride height if it looks saggy or the car leans side to side.
• Inspect the rubber insulators, top mounts, and bump stops—old rubber hardens and squeaks.
• Replace springs in axle pairs and match the correct rate to the engine/driveline, Toyota uses colour codes and VIN-specific listings.
• After any spring/strut work, get a wheel alignment and torque suspension bolts at normal ride height.

There’s no fixed replacement interval—good springs can last well past 150,000 km—but age, heavy loads, or corrosion can bring them undone earlier. Many Caldinas earn their keep as family wagons, so if it tows or carries tools, heavy-duty springs might be worth a look. For the ST246 GT-Four, note the rear is a different setup to the 2WD cars, so parts aren’t interchangeable. And safety first: compressed springs store serious energy, use a proper spring compressor and, if in doubt, let a workshop handle it.

Popular questions about 2003 Toyota Caldina coil springs

Do all 2003 Caldina models use the same front coil springs?
Not quite. Spring rates and free lengths vary with engine, transmission, and whether it’s 2WD or 4WD (e.g., ZZT241 1.8 vs AZT246 2.4 vs ST246 GT-Four). Always match springs to the VIN and colour codes to keep ride height and handling correct.

When should the Caldina’s coil springs be replaced?
Replace them if a coil is cracked, the car sags or leans, you hear a metallic clunk, or there’s heavy corrosion. After 15–20 years, rubber insulators and mounts are often due too. Best practice is to replace springs in pairs per axle and align the car afterwards.

Can they be upgraded for towing or a bit more ride height?
Yes—heavy-duty or raised-rate coils are available. Match them with appropriate dampers to avoid a choppy ride. In NZ, check WoF and certification rules for height changes, in AU, ensure the upgrade complies with state regs and insurance requirements.