Parts for your 2010 Holden Colorado-Sump plug washers

2010 Holden Colorado sump plug washers

Yes, the 2010 Holden Colorado uses a sump plug washer. This is shown in the Holden RC Colorado Workshop Manual (Engine Mechanical – Lubrication), which depicts the oil drain plug with a separate sealing washer and directs replacement if damaged during servicing. The Isuzu 4JJ1 engine service literature (the Colorado’s diesel shares this engine) also specifies a sealing gasket/washer at the drain plug. Parts catalogues commonly used by workshops in Australia and New Zealand—such as ACDelco/GM EPC listings and the Tridon/Ryco application guides—list a dedicated drain plug washer for the 2010 Colorado. Put simply, it’s a fitted, serviceable item on this model.

This little washer does a big job. Sitting under the sump plug head, it crushes slightly when tightened to form a reliable oil-tight seal between the plug and the sump. That prevents slow seeps and the tell-tale spots on the driveway, and it also means the plug can be torqued correctly without relying on brute force. On the Colorado, you’ll typically find either a soft metal crush washer (copper or aluminium) or a steel washer with a bonded rubber face—both types are designed to deform and seal the mating surfaces.

Good workshop practice across Australia and New Zealand is to replace the sump plug washer at every oil change. Crush washers are single-use by design, once they’ve compressed, they don’t spring back. Bonded washers can sometimes be reused if perfectly clean and undamaged, but they’re inexpensive, so most techs still renew them to avoid callbacks. During servicing of a 2010 Holden Colorado, the technician will clean the sump face, fit the correct washer size and profile for the plug, and tighten the plug to the specified torque—no sealants or tapes required.

Why bother? A fresh washer saves the sump threads from over-tightening, helps maintain correct torque, and protects against leaks that can lower oil level and shorten engine life. Owners who do their own oil changes should keep a small stash of the correct-size washers on hand and replace the washer every time the oil is drained. If there’s any sign of weeping after a service, don’t just swing on the spanner—inspect the washer, the plug’s seating face and the sump surface, and replace as needed. Matched correctly and tightened to spec, a new washer helps keep the 2010 Colorado’s 4JJ1 diesel—or its petrol variants—clean, quiet and leak-free.

• Replace the washer at each oil change (or whenever the plug is removed).
• Use the correct size for the Colorado’s drain plug (commonly an M14 plug—check by VIN/engine).
• Tighten to the workshop manual torque, avoid over-tightening.

Popular questions about 2010 Holden Colorado sump plug washers

What size sump plug washer does a 2010 Colorado use?
Most 2010 Colorados use a drain plug around M14, which takes a 14 mm ID washer. Because there are engine and market variations, it’s best to confirm by VIN or by measuring the plug shank. If in doubt, any quality parts counter can match the washer by plug size and seat type (crush vs bonded).

Can the washer be reused?
Crush washers are single-use, once compressed, they won’t seal the same way again. Bonded (rubber-faced) styles might be reused if they’re pristine and seal perfectly, but replacement at each oil change is the low-cost, no-fuss approach that avoids leaks.

My sump plug seeps after an oil change—should I just tighten it more?
No. Over-tightening can strip threads or distort the sump face. Instead, remove the plug, fit a new correct washer, clean the mating surfaces, and tighten to the specified torque. If a leak persists, inspect the plug and sump seat for damage and replace the plug if needed.