Parts for your 2019 Honda Cr-v-Sump plug washers

2019 Honda CR‑V sump plug washers — what they do and when to replace them

Yes, the 2019 Honda CR‑V uses a sump plug washer. Honda’s factory guidance (2019 CR‑V Owner’s Manual, Maintenance – Engine Oil) and the service workshop manual for the 2017–2019 CR‑V specify refitting the drain/sump plug with a new crush washer at each oil change and tightening the plug to about 30 lbf·ft (40 N·m). Honda’s genuine parts catalogue also lists a 14 mm aluminium crush washer (commonly referenced as Washer, Drain Plug 14 mm, p/n 94109‑14000) for this model. Those technical sources make it clear the washer is a standard, single‑use sealing part on the CR‑V’s alloy sump.

On this CR‑V, the sump plug washer is a soft aluminium ring that deforms slightly as the plug is tightened. That tiny, controlled “crush” creates a gas‑ and oil‑tight seal between the plug and the sump face. Without it, or if it’s reused after it’s been crushed, the joint can seep, leaving tell‑tale oil spots on the driveway and, worse, an engine running low on oil. Because the sump and plug are different metals, the washer also helps prevent galling and protects the sump face.

Best practice for Aussie and Kiwi owners is to treat the washer as a service item: replace it every oil change, and any time the plug is removed. Keep a couple of spares in the glovebox or tool drawer — they’re inexpensive and save drama on a Sunday arvo service. The Honda washer is symmetrical, so orientation isn’t fussy, the key is using a fresh one and tightening to spec.

Hand‑start the plug to avoid cross‑threading the alloy sump, snug it up with a torque wrench to 30 lbf·ft (40 N·m), then run the engine, shut it down, and check for weeping after a few minutes. Over‑tightening to “just to be sure” can distort the washer too far and risks damaging threads in the sump — a much costlier fix than a new washer. If the sump face has nicks, lightly dress it and wipe it clean before refitting.

• Replace the washer at every oil change or plug removal.
• Use the correct 14 mm Honda‑spec aluminium crush washer.
• Tighten the sump plug to 30 lbf·ft (40 N·m) and recheck for leaks.

That’s one small ring doing a big job — keeping the CR‑V’s lifeblood where it belongs.

Popular questions about 2019 Honda CR‑V sump plug washers

What size washer does a 2019 Honda CR‑V use?
The CR‑V uses a 14 mm aluminium crush washer for the engine oil drain/sump plug. It’s the standard Honda washer commonly listed as Washer, Drain Plug (14 mm), often sold under p/n 94109‑14000. Using the correct size ensures the seal crushes properly and doesn’t leak.

Do you really need to replace the washer every oil change?
Yes. Honda’s service guidance specifies a new washer each time the plug is removed. It’s a single‑use crush washer, once deformed, it won’t seal as designed again. Reusing it is one of the most common causes of slow oil weeps after a service.

What torque should the sump plug be tightened to?
Tighten the sump plug to about 30 lbf·ft (40 N·m). That’s enough to crush the washer correctly without over‑stressing the alloy sump threads. After the first warm‑up, have a quick look underneath to confirm there’s no weeping around the plug.