Parts for your 2020 Suzuki Splash-Transmission filter

2020 Suzuki Splash transmission filter — is there one, and does it need servicing?

Based on technical service literature and parts catalogues, a “transmission filter” is not a separately serviceable part on the 2020 Suzuki Splash. The model was offered with either a manual gearbox (which has no filter at all) or a 4‑speed torque‑converter automatic that uses an internal oil strainer inside the transmission case rather than an external, replaceable filter. That means a catalogue “transmission-filter” isn’t relevant as a routine service item for this vehicle.

Technical sources supporting this include:

• Suzuki workshop manuals for Splash/Ritz (K12B) specifying the 4‑speed A/T uses an internal oil strainer and magnets, with no scheduled filter replacement.
• Suzuki Electronic Parts Catalogue (EPC) listings for Splash/Agila derivatives showing an internal “oil strainer” within the transmission assembly and no external, in‑line filter.
• ATSG/Aisin technical manuals for the small 4‑speed Aisin units commonly fitted to Suzuki small cars, describing a metal screen strainer that is cleaned/assessed during overhaul rather than replaced on routine services.
• Factory maintenance schedules that call for ATF inspection/replacement under conditions, but do not list a transmission filter change.

Why Suzuki doesn’t use a serviceable transmission filter on the Splash comes down to design choices. The compact 4‑speed automatic was engineered with a fine mesh internal strainer and magnetic sump plugs to capture debris, relying on correct ATF specification and condition to keep everything healthy. A separate spin‑on or external filter would add complexity, space demands, pressure drop and extra leak points in a very tight engine bay. For the manual gearbox, filtration simply isn’t needed, it uses gear oil and a magnetic drain plug to grab wear particles.

What owners should do instead is focus on fluid condition. In Australian and New Zealand conditions (heat, stop‑start, hills), a preventative ATF drain‑and‑fill every 60,000–90,000 km is a sensible approach, even if some paperwork suggests “filled for life”. When the pan is off (for leaks or other work), a technician can clean the magnets, inspect the sump, and replace the internal strainer only if there’s evidence of contamination or during a full overhaul. Always use the ATF specified in the owner’s manual for the fitted transmission — commonly Suzuki ATF 3317/JWS 3309 for the 4‑speed auto — and verify by VIN. Manual gearboxes benefit from periodic gear‑oil changes and cleaning the magnetic plug at similar intervals.

Level checks vary by transmission variant: some have a dipstick, others use a level/overflow plug with a specific temperature procedure. A workshop with the right service information and scan tool can perform this correctly, preventing under‑ or overfilling.

Bottom line: there’s no external, replaceable transmission filter on the 2020 Suzuki Splash. Good fluid, correct level, and periodic servicing are the keys to long life.

Popular questions

Does the 2020 Suzuki Splash have a transmission filter that can be replaced during a routine service?
Owners won’t find a separate, external filter to buy for the Splash. The manual gearbox has no filter, and the 4‑speed auto uses an internal strainer inside the transmission. That strainer is typically only inspected or replaced during overhaul or if contamination is found when the pan is removed.

How often should the automatic transmission fluid be changed on a 2020 Splash?
While some schedules list ATF as “inspect/replace under severe use”, many workshops in Australia and New Zealand recommend a conservative 60,000–90,000 km drain‑and‑fill due to heat and stop‑start driving. Use the correct spec ATF (commonly Suzuki ATF 3317/JWS 3309 for the 4‑speed auto) and have the level set using the proper temperature procedure.

Can an aftermarket in‑line transmission filter be fitted to a Splash?
Some transmission specialists can add an external in‑line filter when doing cooler or line work, but it’s not standard and usually unnecessary if fluid is maintained. If considered, it should be engineered carefully to avoid pressure drop or leak risks, and owners should discuss any warranty or insurance implications with their workshop.