Parts for your 2018 Suzuki Splash-Drive belt pulley

2018 Suzuki Splash drive-belt pulley — what it is, what it does, and when to sort it

Yes, the 2018 Suzuki Splash uses a drive-belt pulley system. On K-series petrol engines (K12B 1.2), the crankshaft drive (harmonic balancer) pulley turns the auxiliary/serpentine belt that runs the alternator, A/C compressor and water pump. This is documented in the Suzuki Splash/Ritz K12B service literature (Engine Mechanical – Drive Belt section), backed by parts listings in the Suzuki EPC (showing crankshaft, idler and automatic tensioner pulleys), and aftermarket catalogues from Gates and Dayco that list the serpentine belt and associated pulleys for the Splash.

• Technical sources: Suzuki Splash/Ritz K12B Service Manual (Drive Belt), Suzuki Electronic Parts Catalogue (EPC), Gates Micro-V belt catalogue, Dayco accessory drive catalogue.

For owners, that means the drive-belt pulley is a key player in keeping charging, cooling and air-con happy. If the pulley or belt slips or wobbles, you’ll cop battery lights, hot running under the bonnet, squeals at cold start, or a rough idle if the crank pulley damper is failing.

As part of routine servicing on a 2018 Splash, it’s smart to inspect the whole accessory drive every 20,000–30,000 km or annually. Check the belt for cracking, glazing or frayed edges, spin the idler/tensioner pulleys by hand for roughness, and look at the crank pulley for rubber damper separation or wobble with the engine idling. Any chirps, rattles or visible run-out mean it’s time for parts.

Replacement is straightforward workshop fare: isolate the battery, relieve the tensioner, remove the belt, then replace suspect pulleys (crank, idler, and/or tensioner) as needed. On reassembly, fit a quality belt, confirm the rib alignment, and rotate the engine by hand one turn to seat the belt. Always follow the Suzuki workshop manual for torque specs on the crank pulley bolt and tensioner fasteners, and use the correct holding/locking tools to avoid damage. If the crank pulley is a rubber-damped type, don’t sandblast or press on the outer ring—replace it if it’s perished.

Good practice in AU/NZ conditions is belt replacement around 60,000–100,000 km depending on use, with pulleys and the automatic tensioner assessed (and often refreshed) at the same time. Preventive replacement saves chasing squeaks later and helps keep the Splash cool and charging sweet as.

Popular questions about 2018 Suzuki Splash drive-belt pulleys

How can someone tell if the Splash’s crank pulley is failing?
Common signs include a rhythmic squeal or chirp at idle, visible pulley wobble, or rubber dust around the crank area if the damper is separating. Electrical issues (battery light) or hotter-than-normal running can also show if the belt is slipping because of a worn pulley or tensioner.

Should the belt and tensioner be replaced with the pulley?
Often, yes. A new pulley on a tired belt or lazy tensioner won’t stay quiet for long. Many techs replace the belt and any noisy idler/tensioner together to restore correct tension and alignment and avoid repeat visits.

What maintenance helps the drive-belt pulley last?
Regular inspections, prompt belt replacement when cracks or glazing appear, and keeping oil/coolant leaks off the belt path. Correct torque on fasteners and proper belt routing after any service go a long way to pulley longevity.