Parts for your 2014 Subaru Exiga-Sump plug washers

2014 Subaru Exiga sump plug washers — what they do and when to replace them

Technical references confirm that a sump plug washer is indeed fitted to the 2014 Subaru Exiga and is relevant at every oil change. Subaru’s workshop literature for the YA-series Exiga (Lubrication section within STIS service information) specifies installing a new drain plug gasket whenever the engine oil is changed and tightening the plug to the prescribed torque. Subaru’s electronic parts catalogue (Subaru FAST) lists a “Gasket – Drain Plug” for the Exiga models of this era, commonly supplied as an aluminium crush washer (widely referenced as OEM part 803916010). These sources make it clear the Exiga uses a single-use crush washer on the sump plug.

On the 2014 Exiga, the sump-plug-washer is a small but vital bit of kit. It sits between the oil pan (sump) and the drain plug, and when the plug is tightened, the soft aluminium washer deforms slightly to create a perfect seal. That’s what stops those annoying drips on the driveway and helps maintain correct oil level and pressure. Because it crushes to seal, it’s designed to be used once and then replaced at the next service.

For day-to-day servicing of a 2014 Subaru Exiga, it’s smart to keep a couple of sump-plug-washers on hand. Replace the washer at every oil change (typically every 10,000 km or 12 months across Australia and New Zealand, or sooner if your driving is mostly short trips). Fit the new washer onto the cleaned drain plug, snug the plug up, and torque it correctly. Subaru workshop guidance for contemporary EJ/FB four-cylinder engines specifies around 44 N·m of torque for the drain plug, always check your service data sticker or manual for the exact figure for your variant.

Why replacing matters? Reusing an old crush washer can lead to weeping around the plug, over-tightening to “chase” a seal, and potential thread damage in the sump. A fresh washer lets the plug seat at the right torque, protects the mating surfaces, and keeps oil where it belongs. If an Exiga shows oil mist or dots under the front of the car after a service, the washer is one of the first things a technician will re-check.

• Use the correct-size aluminium crush washer (Subaru’s common M16-type drain plug gasket for this model).
• Replace at every oil change, never double-stack washers.
• Clean the plug and sump face, inspect threads and the plug’s sealing land.
• Tighten to spec (about 44 N·m) and re-check for seepage after a short drive.
• If a copper aftermarket washer is used, confirm sizing and recheck torque and sealing.

What size sump plug washer does a 2014 Subaru Exiga use?

The 2014 Exiga typically uses an aluminium crush washer for an M16 x 1.5 drain plug. The common OEM Subaru gasket for this application is known across parts channels as 803916010. Aftermarket equivalents are usually specified as 16 mm ID aluminium crush washers. Always match the inner diameter and style to the plug on the vehicle.

How often should the sump-plug-washer be replaced on a 2014 Exiga?

Every oil change. Because it’s a crush-type washer, it’s single-use. Replacing it each time ensures the plug seals properly at the specified torque, avoids over-tightening, and helps prevent oil weeps down the track.

What’s the correct torque for the Exiga’s sump plug?

Workshop data for Subaru’s four-cylinder engines of this era specifies about 44 N·m for the oil drain plug. Use a torque wrench on a clean, dry plug and new washer. If exact specs differ for your engine code or market variant, follow the figure in your service manual or under-bonnet service guide.