Parts for your 2023 Suzuki Splash-Spark plugs

2023 Suzuki Splash Spark Plugs: What They Do and When to Replace Them

Based on technical sources including Suzuki service literature for the Splash’s K-series petrol engines (K10B/K12B), as well as NGK and Denso application catalogues, spark plugs are indeed fitted and relevant to a 2023-registered Suzuki Splash running a petrol engine. Only the 1.3 DDiS diesel variant (documented in Suzuki/Fiat Multijet service materials) does not use spark plugs, relying on glow plugs instead. For most NZ and Australian-market Splash vehicles—often petrol imports—spark plugs are the go.

In a petrol Splash, spark plugs ignite the air–fuel mix, keeping starts crisp, idle smooth, and fuel use tidy. When plugs get tired, the engine can feel flat, run rough, or burn more fuel than it should. For owners wanting to keep their Splash perky on city hops and highway runs alike, fresh, correctly gapped plugs make a real difference.

Service guidance from Suzuki and major plug makers suggests long-life iridium or platinum plugs on K-series engines can run up to about 100,000 km in normal conditions, while standard nickel plugs are typically due much earlier (around 30,000–40,000 km). A practical approach for local conditions is to have the plugs checked every 20,000–30,000 km or annually during servicing. The correct heat range and reach should match the VIN/engine code, the plug gap is usually factory-set on iridium types, with K-series petrol engines typically around 0.7–0.8 mm—always confirm with the under-bonnet label or the service manual.

Handy signs it’s time to act include:

• Hard starting, rough idle, or a misfire under load
• Notably worse fuel economy or sluggish response
• Check engine light with ignition-related fault codes

When replacing, let the engine cool, blow out any debris around the wells, and thread plugs in by hand before tightening. Torque to the specification in the manual (commonly in the high-teens to low-20s Nm range for M12 gasket-seat plugs). Plug makers advise against anti-seize on modern nickel-plated threads, a dab of dielectric grease on coil boots helps future removal. The Splash’s coil-on-plug setup means inspecting coil boots for cracking at the same time is a smart move.

Sticking with quality, spec-correct plugs and a sensible inspection interval keeps the 2023 Suzuki Splash running sweet, with better economy and fewer surprises.

Popular questions about 2023 Suzuki Splash spark plugs

What spark plug type and gap does a 2023 Suzuki Splash use?
Most petrol Splash models (K10B/K12B) are specified for long-life iridium/platinum plugs, exact part numbers vary by engine code and market. The gap on iridium plugs is typically pre-set, with K-series petrol specs commonly around 0.7–0.8 mm—owners should confirm on the under-bonnet emissions label or in the service manual. Diesel DDiS versions don’t use spark plugs at all, they use glow plugs.

How often should Splash spark plugs be replaced in NZ or Australia?
For K-series petrol engines, long-life iridium/platinum plugs can go to around 100,000 km under normal use, while standard nickel plugs are usually due at 30,000–40,000 km. A quick inspection every 20,000–30,000 km (or annually) during servicing is a good habit, especially if the vehicle does lots of short trips.

Can Splash spark plugs be changed at home?
Yes, for many owners with basic tools. A proper spark plug socket, torque wrench, and care with coil packs are key. Always work on a cool engine, keep grit out of the plug wells, hand-thread to avoid cross-threading, and torque to spec. If there’s any doubt about part selection, heat range, or torque, a qualified technician is the safe bet.