Parts for your 2009 Holden Commodore-Sump plug washers

2009 Holden Commodore sump plug washers

Based on technical references used across Australia and New Zealand — including the GM Holden VE Series Service Manual (Engine Lubrication section), GM/ACDelco parts catalogues for VE engines (V6 Alloytec and LS-series V8), and mainstream fitment catalogues from Tridon, Ryco and Repco — the 2009 Holden Commodore uses a sealing washer for the engine oil drain (sump) plug. Depending on engine variant, this may be a separate crush washer (usually aluminium or copper) or a plug supplied with an integral/captive gasket or O‑ring. Those sources also note replacing the washer or the complete plug-and-gasket assembly during routine oil services, confirming the washer is relevant and required on this model.

On a 2009 Commodore, the sump plug washer is the simple, clever bit that keeps engine oil from weeping past the drain plug once it’s torqued up. Whether it’s a soft crush washer or an integrated rubber/nylon gasket, it deforms slightly to seal the machined faces of the plug and sump, so the driveway stays clean and the engine doesn’t slowly lose oil.

As part of regular servicing, it’s smart practice to replace the washer at each oil change. Crush washers are designed for one-time use: once they’ve compressed, they won’t spring back and can seep next time. If the vehicle’s plug has a captive gasket or O‑ring, inspect it closely, if it’s nicked, flattened, or hardened, replace the plug assembly. Most trade catalogues list both genuine-style replacements and quality aftermarket options for the VE.

A few friendly tips for DIYers and workshops:

• Confirm the engine variant (V6 vs V8) to match the correct plug/washer style and size.
• Clean the sump face and plug threads, then fit a new washer before refitting the plug.
• Tighten to the specified torque in the service manual (typically in the mid‑20s Nm range for many VE engines). Avoid over‑tightening — that’s how pans get stripped and washers get crushed unevenly.
• After refill, check for drips with the engine warm. Any weep means the washer/plug should be rechecked or replaced.

Sticking to a fresh washer each service is cheap insurance. It protects against annoying drips, keeps oil where it belongs, and helps the Commodore’s Alloytec or LS engine stay healthy between 10,000–15,000 km intervals, depending on the service schedule followed.

Does a 2009 Holden Commodore need a sump plug washer?

Yes. Technical literature for the VE-series and major parts catalogues specify a sealing washer or a plug with an integral gasket. It’s there to stop leaks and should be renewed or inspected at each oil change.

What type of washer does it use — crush washer or captive gasket?

Both types are seen across VE engines. Some V6 and V8 variants use a separate aluminium/copper crush washer, others use a drain plug with a built-in rubber/nylon gasket. Match by engine code or VIN and choose like-for-like replacement.

How often should the sump plug washer be replaced?

Replace a crush washer every oil service. If the plug uses a captive gasket or O‑ring, inspect each service and replace the plug assembly if the seal looks flattened, cracked, or hard, or if any seepage is noted after refilling.