Parts for your 2013 Holden Colorado-Sump plug washers

2013 Holden Colorado sump-plug-washers: what they do and when to replace

Yes, the 2013 Holden Colorado uses a sump plug washer. Workshop literature for the RG Colorado platform (engine lubrication service procedures) and equivalent Isuzu D‑MAX 4JJ1/2.8‑litre diesel service information specify refitting the sump drain plug with a new sealing washer during oil changes. Holden/GM parts catalogues for the RG Colorado also list a dedicated oil drain plug gasket, confirming it’s a replaceable item.

On this ute, the sump-plug-washer (often called a crush washer) is a small, soft-metal gasket that sits under the engine oil drain plug. Its job is simple but critical: it deforms slightly as the plug is tightened, creating a reliable seal between the plug and the sump so engine oil doesn’t weep or drip after servicing. Because it crushes to seal, it’s considered a consumable—once compressed, it won’t spring back perfectly next time.

Good service practice for a 2013 Holden Colorado is to replace the sump-plug-washer at every engine oil change. That’s exactly why the manufacturer documentation calls for a “new” washer when refitting the plug. Reusing a tired washer can lead to small leaks, oil misting under the vehicle, or the temptation to overtighten the plug to chase a seal—never ideal for the sump threads.

• Always have the correct replacement washer ready before dropping the oil. The Colorado typically uses an alloy or copper crush washer sized to the OE drain plug, match by VIN or measure the old one.
• Clean the sump’s sealing face and the plug head before installing the new washer. Any grit can compromise the seal.
• Tighten the drain plug to the workshop manual torque spec, don’t “gorilla” it. The washer does the sealing—excess force risks thread damage.
• Never stack old washers, and don’t substitute with thread tape, neither provides the proper face seal.
• After the first drive post-service, have a quick look under the Colorado for any fresh oil around the plug. A dry plug is a good sign the washer has seated properly.

If the plug on a previous service has been swapped for an aftermarket type with an integral O‑ring, treat the O‑ring the same way—inspect closely and replace if nicked, flattened, or perished. But for factory setups on the 2013 Colorado, a fresh crush-type sump-plug-washer at each service keeps things tidy and leak‑free.

Popular questions about 2013 Holden Colorado sump-plug-washers

Does a 2013 Holden Colorado have a sump plug washer?
Yes. Service procedures for the RG Colorado specify fitting a new drain plug sealing washer during engine oil changes, and OEM parts catalogues list a dedicated gasket for the sump plug.

How often should the sump-plug-washer be replaced?
Replace it at every engine oil change. It’s a crush-style gasket that deforms to seal once, reusing it can lead to weeping or the need to overtighten the plug.

What size or type washer does it use?
The Colorado typically uses an alloy or copper crush washer matched to the factory drain plug. The exact size can vary by engine/plug revision, so match it by VIN or measure the inner/outer diameter of the old washer and replace like for like.