Parts for your 2003 Honda Accord-Sump plug washers

2003 Honda Accord sump plug washers — purpose, fitment and service tips

Based on Honda’s own technical literature, the 2003 Honda Accord does use a sump plug washer (also called an oil drain plug crush washer). The 2003 Accord Service Manual (Helm Inc., Engine Oil Replacement procedure) specifies to “always replace the drain bolt washer with a new one” and to torque the drain bolt to 39 N·m (29 lb·ft). Honda’s parts catalogue lists a 14 mm aluminium crush washer for both the four‑cylinder K24A and the V6 J30A engines, commonly sold under part number 94109-14000. So, sump plug washers are absolutely relevant on the 2003 Honda Accord.

On this Accord, the sump plug washer’s job is simple but critical: it seals the drain bolt to the alloy sump, preventing those annoying weeps that leave spots on the driveway and attract dust. It’s a soft, single‑use crush washer—typically aluminium—that deforms slightly as the bolt is torqued, creating a reliable seal without needing heaps of force. Reusing a flattened washer can lead to slow leaks, over‑tightening, or damaged threads, none of which is a good time.

As part of routine servicing in Australia and New Zealand, it’s best practice to replace the sump plug washer at every oil change (commonly every 10,000 km or 12 months, or as per the service schedule for the specific engine/usage). The correct washer for the 2003 Accord is the 14 mm Honda crush washer. The drain bolt’s hex is larger than the bolt diameter, so don’t confuse spanner size with washer size. With the old oil drained, fit a fresh washer, thread the drain bolt by hand, then torque to 39 N·m. No need to lean on it—just the proper torque and a clean sealing surface.

Owners and workshops who stick with OEM‑spec washers avoid most after‑service drips. If a top‑up is needed between services, a quick visual check under the car after parking overnight will reveal any fresh oil spots. If a leak appears soon after an oil change, the usual culprits are a reused washer, incorrect washer size, or insufficient/incorrect torque.

• Washer type: Aluminium crush washer
• Size: 14 mm (Honda PN often listed as 94109-14000)
• Torque: 39 N·m (29 lb·ft) on the drain bolt
• Replace: Every oil change

Technical sources referenced: 2003 Honda Accord Service Manual (Helm Inc., Engine Oil Replacement), Honda Owner’s Maintenance Information (2003 Accord), and Honda Parts Catalogue listings for 2003 Accord K24A and J30A engines (drain plug washer 14 mm, aluminium).

Popular questions

What size sump plug washer does a 2003 Honda Accord use?
The 2003 Accord uses a 14 mm aluminium crush washer on the engine oil drain bolt. This applies to both the 2.4‑litre four‑cylinder and the 3.0‑litre V6 variants. It’s the common Honda washer often supplied as PN 94109-14000.

How often should the sump plug washer be replaced on a 2003 Accord?
Replace it at every oil change. The washer is designed to deform once to seal properly. Swapping it each service helps prevent drips and avoids the temptation to overtighten the drain bolt.

Can the sump plug washer be reused if it looks fine?
It’s not recommended. Even if it looks okay, a previously crushed washer won’t seal as reliably the second time. A fresh washer is inexpensive insurance against leaks and thread damage.