Parts for your 2004 Honda Cr-v-Sump plug washers

2004 Honda CR‑V sump plug washers

Yes, the 2004 Honda CR‑V uses a sump plug washer. Technical references for the 2002–2006 CR‑V (K24 engine) specify an aluminium crush washer fitted beneath the sump (engine oil pan) drain bolt. The Honda Service Manual for this generation, the Honda Electronic Parts Catalogue, and common Honda parts listings all note a 14 mm crush washer, typically part number 94109‑14000, used with the drain bolt and torqued to about 39 N·m (29 lb‑ft). These sources make it clear the washer is a designed sealing component, not optional hardware.

On this CR‑V, the sump plug washer is a small but vital bit of kit that prevents oil weeps after an oil change. Being a soft aluminium crush washer, it deforms slightly when the drain bolt is tightened, creating a reliable seal between the bolt head and the sump. Without it, or if it’s reused too many times, the bolt can bottom out on the sump face without sealing properly, leading to slow leaks, oily undertrays, or even a drop on the driveway.

Best practice during routine servicing is to replace the washer at every oil change. They’re inexpensive, and swapping one out helps protect the sump threads by avoiding over‑tightening to chase a seal. Fit the new 14 mm washer, thread the drain bolt by hand to avoid cross‑threading, then torque to around 39 N·m. No need to swing off the spanner—let the washer do the sealing. If a washer must be reused in a pinch, inspect it for gouges or flattening, even then, plan to replace it at the next opportunity.

Signs a fresh washer is overdue can include:

• A light oil film or drip from the drain bolt area after a drive
• A washer that’s visibly crushed, scored, or hardened
• Needing extra grunt on the bolt to stop a weep

Stick with the correct 14 mm Honda‑spec washer (aluminium is standard for this model). Copper can work, but the OEM‑style alloy crush washer is what Honda engineered the joint for. For peace of mind on long trips across Aus or NZ, popping a couple of spares in the glovebox is a smart move.

Popular questions about 2004 Honda CR‑V sump plug washers

What size sump plug washer does a 2004 Honda CR‑V use?
It uses a 14 mm aluminium crush washer that matches the drain bolt and sump seat. Honda commonly lists this as P/N 94109‑14000 across many K‑series models, including the 2004 CR‑V.

How often should the sump plug washer be replaced?
Replace it at every oil change. The washer is designed to deform once to seal properly. Reusing can lead to slow leaks or the temptation to over‑tighten the bolt, which risks damaging sump threads.

What torque should the drain bolt be tightened to?
Tighten the drain bolt to about 39 N·m (29 lb‑ft) on the 2004 CR‑V. This torque allows the crush washer to seat and seal without stressing the threads. Always start the bolt by hand to avoid cross‑threading.