Parts for your 2010 Honda Stream-Sump plug washers

2010 Honda Stream sump plug washers: fitted and essential

Technical sources confirm the 2010 Honda Stream does use a sump plug washer. The Honda Service Manual for the RN6/RN8 Stream (Engine Lubrication section) specifies a crush-type drain bolt washer that must be replaced at each oil change. Honda’s Genuine Parts Catalogue lists a 14 mm aluminium drain plug washer (commonly p/n 94109-14000) for the R18A/R20A engines fitted to the Stream, and the Owner’s Manual servicing notes instruct replacing the drain bolt washer whenever the engine oil is changed. That makes a sump-plug washer both relevant and required for the 2010 Honda Stream.

For the 2010 Honda Stream, the sump-plug washer is the quiet achiever that keeps the engine oil where it belongs. Sitting under the drain bolt, this aluminium crush washer deforms once to create a tight, reliable seal against the sump. It’s cheap as chips and saves headaches by preventing weeps, drips and oily smells that come from a plug that can’t quite seal on its own.

Best practice on this model is to fit a new washer every time the sump plug comes out—so, with every scheduled oil change. In Aussie and Kiwi conditions that typically means every 10,000–15,000 kilometres or 12 months, whichever comes first, unless the servicing schedule for your exact variant specifies otherwise. Reusing a crush washer is a false economy, once it’s been squashed, it can’t reliably seal again. When the plug goes back in, have it tightened to the specified torque (commonly around 39 N·m for Honda 14 mm drain bolts—check the service manual for the exact figure for your VIN) to avoid both leaks and stripped threads.

• Common signs a new washer is needed: a light oil weep around the plug, fresh spots under the car after a service, or a washer that looks grooved, hard or flattened.
• What to fit: a 14 mm Honda-spec aluminium crush washer. Quality aftermarket is fine, but avoid stacking washers or using fibre gaskets not intended for this application.

Handy servicing tips: clean the sump’s mating face before refitting, use a single new washer only, and don’t go gorilla on the spanner—correct torque does the sealing with the help of the washer. After the first short drive, have a quick look underneath to make sure it’s bone dry. With a fresh sump-plug washer on the 2010-honda-stream, it’s no dramas—just a tidy, leak-free service.

Popular questions about 2010 Honda Stream sump plug washers

Does the 2010 Honda Stream definitely need a sump plug washer?
Yes. Honda’s servicing procedures for the Stream call for a crush-type washer on the drain bolt and say to replace it at each oil change. Skipping it risks minor leaks and over-tightening to compensate.

What size washer does it use?
The 2010 Honda Stream typically uses a 14 mm aluminium crush washer (Honda p/n often cited as 94109-14000). If in doubt, confirm by VIN or match to the existing drain bolt.

How often should it be replaced?
Every time the sump plug is removed—generally every oil change. For most owners in Australia and New Zealand, that’s about every 10,000–15,000 km or 12 months, depending on driving conditions and service schedule.