Parts for your 2010 Suzuki Sx4-Sump plug washers

2010 Suzuki SX4 sump plug washers — what they do and when to replace them

Yes, the 2010 Suzuki SX4 uses a sump plug washer (also called a drain plug gasket). This is confirmed in the Suzuki SX4 Service Manual for this model year, which instructs technicians to replace the drain plug gasket during an engine oil change, and in Suzuki’s Electronic Parts Catalogue listing a 14 mm drain plug gasket (commonly referenced as Suzuki part number 09168-14015) for SX4 engines. Those technical sources make it clear a washer is fitted and expected to be renewed as part of routine servicing.

On the SX4, the sump plug washer is a small, single-use sealing ring—usually aluminium or copper—that sits under the sump plug head. When the plug is tightened, the washer deforms slightly to create a tight seal between the plug and the sump, preventing weeps and drips as the engine heats and cools. Without a good washer, even a correctly torqued plug can mist oil, leaving spots on the driveway or, worse, letting the oil level creep down between services.

For everyday servicing of a 2010 Suzuki SX4, it’s best practice to replace the sump-plug-washers at every oil change. They’re inexpensive and designed to crush once, reusing them risks hardening and poor sealing. If the last service reused the washer, keep an eye out for a film of oil around the plug after a few heat cycles.

• Use the correct size: the SX4 sump plug takes a 14 mm ID crush washer suited to the OE plug.
• Avoid sealants or thread tape—Suzuki specifies a clean, dry thread and a new washer to do the sealing.
• Tighten the plug to the factory torque specified in the SX4 service manual, over-tightening can distort the washer or damage threads, under-tightening can allow a slow leak.
• Inspect the mating surface on the sump and the plug head for nicks or burrs before refitting.

If the plug’s been rounded off or the washer face is scored, replace the plug along with the washer. Anyone DIY’ing under the bonnet will appreciate how a fresh washer helps the plug come up to torque smoothly. For workshop servicing across Australia and New Zealand, keeping a handful of quality M14 aluminium or copper washers on hand for the SX4 makes every oil change straightforward and leak-free.

Popular questions about 2010 Suzuki SX4 sump plug washers

What size sump plug washer does a 2010 SX4 use?
It uses a 14 mm inner-diameter crush washer matched to the factory drain plug. This is the size referenced in Suzuki’s parts listings for the SX4 and is the standard fit for the model’s petrol and most diesel variants.

How often should the washer be replaced?
Replace it at every oil change. The washer is designed to deform once to make a proper seal, so reusing it can lead to weeping or drips after a few heat cycles.

Can the sump plug washer be reused in a pinch?
If absolutely stuck, it might reseal once, but it’s not recommended. Given the low cost and Suzuki’s service guidance to renew the gasket, fitting a new washer is the smart move to avoid nuisance leaks.