Parts for your 2000 Mitsubishi Lancer-Sump plug washers

2000 Mitsubishi Lancer sump plug washers

Based on the Mitsubishi Lancer CE/CK Factory Service Manual (Lubrication section) and the Mitsubishi ASA global parts catalogue, the 2000 Lancer runs a replaceable crush washer on the engine oil drain plug. The OEM listing shows a 14 mm aluminium gasket (commonly referenced as Mitsubishi P/N MD050317) used across the 4G15 and 4G93 engines, so sump plug washers are absolutely relevant to this vehicle.

On a 2000 Mitsubishi Lancer, the sump plug washer is a small but vital seal that sits between the drain plug head and the sump. Its job is to deform slightly (“crush”) when the plug is tightened, filling microscopic gaps so engine oil can’t seep past. Without a good washer, the plug can weep, leaving spots on the driveway and, over time, lowering the oil level. It’s cheap insurance for a tidy, leak-free service.

Best practice for the Lancer is to replace the washer at every oil change. The crush action is designed for one-time use, once flattened, it won’t spring back to seal as well the second time. Aluminium and copper versions are both common. Aluminium is closest to the Mitsubishi spec and seals well at the factory torque. Copper can work fine too, but if re-used it should be properly annealed—most owners simply fit a new washer each time.

• Size and type: 14 mm ID crush washer (aluminium is typical OEM).
• Torque: typically around 30–40 N·m depending on engine variant—check the factory manual for your exact spec.
• Fitting tips: clean the sump face, use one washer only, thread the plug by hand first, then torque to spec. Don’t over-tighten—stripping alloy sump threads is an expensive mistake.
• Inspection: if the old washer looks dished, grooved, or hard, bin it. Any sign of weeping after a service usually points to a flattened or wrong-size washer.

Keeping a few spare washers in the glovebox or tool kit makes DIY servicing smoother, and helps avoid drips that can make a mess and attract dust under the bonnet. For Aussie and Kiwi owners clocking regular kays, swapping the washer with each 10,000–15,000 km oil change is a simple step that keeps the Lancer’s 4G-series engines happy and leak-free.

Popular questions

What size sump plug washer does a 2000 Mitsubishi Lancer use?
Most 2000 Lancers (CE/CK with 4G15/4G93 engines) use a 14 mm crush washer. Aluminium is the common OEM style. Always match the inner diameter to the plug and confirm against the engine code or VIN if unsure.

How often should the sump plug washer be replaced on a 2000 Lancer?
Replace it at every oil change. The washer is designed to crush once and won’t seal as reliably if reused. It’s inexpensive and helps prevent annoying weeps.

What’s the correct torque for the Lancer’s sump plug?
Expect roughly 30–40 N·m depending on the exact engine. Use a torque wrench and refer to the factory specification for your variant to avoid over-tightening and damaging the sump threads.