Parts for your 2008 Honda Cr-v-Sump plug washers

2008 Honda CR‑V sump plug washers — are they used, and what do they do?

Yes, the 2008 Honda CR‑V uses a sump plug washer (also called a drain plug sealing washer). Technical sources specify it’s an aluminium crush washer that should be renewed whenever the engine oil is changed. The 2007–2011 Honda CR‑V Service Manual (Helm Inc.) instructs fitting the drain bolt with a new washer and tightening to 39 N·m (29 lbf·ft). The Honda Owners Manual for the model year echoes replacing the washer at oil changes, and the Haynes Repair Manual for Honda CR‑V 2007–2012 also states to always renew the sealing washer. Genuine Honda listings show the common 14 mm drain plug washer (Honda part number 94109‑14000) for this vehicle.

On the 2008 CR‑V, the sump plug washer’s whole job is to seal the drain bolt to the alloy sump so there’s no weeping after a service. It’s a soft aluminium crush washer that deforms once to match the mating surfaces. That one‑time “crush” is why Honda says to replace it at every oil change — once flattened, it won’t spring back reliably and can let a slow drip start later. The new washer also protects the sump face from galling when the bolt is torqued to spec.

For servicing, the best practice is simple. Fit a new 14 mm Honda‑spec aluminium crush washer each time the drain bolt is removed, then torque the bolt to 39 N·m. Doing it by feel risks over‑tightening, which can strip threads or distort the washer, too loose and it can seep. Genuine or quality OEM‑equivalent washers are inexpensive, and swapping one in at every oil and filter change is cheap insurance against leaks on the driveway or under‑tray.

Signs a washer needs attention include a damp area around the plug, oil mist on the underbody, or a persistent drip after a recent service. If a previous service reused the washer, or stacked two together, it’s worth correcting at the next opportunity. The washer’s inner diameter and thickness matter — a random copper or fibre washer might not seal correctly on the CR‑V’s sump face.

• Washer type: aluminium crush, 14 mm (Honda P/N 94109‑14000)
• Replace: every oil change (whenever the drain bolt is removed)
• Torque the drain bolt: 39 N·m (29 lbf·ft)
• Don’t double up washers, use one correct new washer only

Cited technical sources: Honda CR‑V 2007–2011 Service Manual (Helm Inc., Engine Oil Replacement procedure), 2008 Honda CR‑V Owners Manual (Maintenance, Engine Oil), and Haynes Repair Manual Honda CR‑V 2007–2012 (Oil and filter change notes).

Popular questions about 2008 Honda CR‑V sump plug washers

What size and part number is the sump plug washer on a 2008 CR‑V?

It uses a 14 mm aluminium crush washer. The common Honda genuine part number is 94109‑14000, used across many K‑series engines, including the 2008 CR‑V. Quality aftermarket equivalents marked as 14 mm aluminium crush washers are fine if they meet OEM dimensions.

How tight should the sump plug be on a 2008 CR‑V?

Honda specifies 39 N·m (29 lbf·ft) on a clean thread with a new washer. Using a torque wrench helps avoid stripping threads or under‑tightening, both of which can cause headaches — from leaks to costly sump repairs.

Can the washer be reused in a pinch?

It’s designed for single use. Reusing may work short‑term but increases the chance of a slow weep after a few heat cycles. If it must be reused once, keep an eye out for drips and replace with the correct new washer at the earliest chance.