Parts for your 2021 Suzuki Splash-Sump plug washers

2021 Suzuki Splash sump plug washers — what they do and when to replace them

Short answer: yes, the 2021-registered Suzuki Splash uses a sump plug washer. Suzuki’s own service literature for the K10B/K12B engines fitted to the Splash specifies a replaceable crush-type sealing washer on the engine oil drain plug. Technical sources that back this up include: Suzuki Splash/Ritz Workshop Manual (Lubrication section — “replace drain plug gasket with a new one at each removal”), and the Suzuki Electronic Parts Catalogue listing a 14 mm drain plug gasket, part number 09168-14015, for the Splash/Agila B platform. Haynes and other independent service guides for the K12B platform also direct renewing the sealing washer at every oil change.

On the Splash, the sump plug washer is a small, soft metal ring (usually aluminium, sometimes copper) that sits under the head of the drain plug. When the plug is tightened, the washer deforms slightly and creates a reliable seal between the plug and the sump. That crush action is what stops weeping and drips after an oil change — simple, cheap, and very effective.

Because it’s designed to crush once, it’s best practice to swap the washer every time the plug comes out. Reusing a flattened washer risks seepage, oil on the driveway, and the hassle of rework. Most Splash variants use an M14 x 1.25 drain plug and a 14 mm ID washer, the OEM aluminium gasket (09168-14015) is a safe bet, and quality aftermarket 14 mm crush washers work fine too.

When servicing, tidy techs will:

• Clean the sealing face on the sump and the drain plug head.
• Fit a new 14 mm crush washer and tighten the plug to about 35 N·m (check your exact spec in service data).
• Wipe down and check for any sign of weeping after refill and a short run.

Signs the washer needs attention include a damp sump around the plug, a slow drip after an oil change, or a plug that feels loose because the old washer has compressed excessively. Keeping a small pack of 14 mm crush washers in the glovebox or toolbox makes life easier at oil-change time.

Technical references: Suzuki Splash/Ritz Workshop Manual, Lubrication section (engine oil replacement procedure — replace drain plug gasket), Suzuki EPC: Gasket, Drain Plug 14 mm (09168-14015) for Splash/Agila B/K10B–K12B applications, Independent service guides for Suzuki K12B platforms recommending washer renewal at each oil change.

Popular questions about 2021 Suzuki Splash sump plug washers

What size sump plug washer does a 2021 Suzuki Splash use?
The Splash typically uses a 14 mm crush washer on an M14 x 1.25 drain plug. The genuine Suzuki listing commonly referenced is 09168-14015 (14 mm aluminium). A quality aftermarket 14 mm aluminium or copper crush washer will also do the job, provided the inner diameter and thickness match.

If the plug has been changed in the past, confirm the size before ordering — a quick check with verniers or the vehicle’s service data avoids a parts run mid-service.

How often should the sump plug washer be replaced?
Replace it every time the drain plug is removed. The washer is designed to deform once to make a perfect seal, reusing it can lead to weeping or drips. They’re inexpensive, so it’s smart to fit a fresh one with each oil change.

If any seepage is noticed after a service, don’t just tighten the plug harder — fit a new washer and torque the plug correctly.

Can a copper washer be used instead of aluminium?
Yes, copper crush washers can be used in place of aluminium as long as the size is correct. Aluminium is the common OEM choice on Suzukis and seals at lower torque, copper is a touch harder and benefits from proper torque to seal reliably.

Avoid reusing either type. If switching materials, keep an eye on torque and sealing — a quick post-service leak check is always good practice.