Parts for your 2011 Holden Captiva 5-Sump plug washers

2011 Holden Captiva 5 sump‑plug‑washers: what they do and when to replace them

For the 2011 Holden Captiva 5, a sump‑plug‑washer (also called a drain plug seal) is used. This isn’t a “nice to have” — it’s specified in technical material for the platform. The Holden Captiva CG (Captiva 5) service procedures for engine oil changes call for replacing the drain plug seal at refit. GM/ACDelco parts catalogues for the Captiva/Antara platform list an M14 drain plug with an integrated or separate sealing washer for the 2.4‑litre petrol engine, and GM Global EPC listings for Opel Antara/Chevrolet Captiva (the Captiva 5’s twin) also show a washer/seal against the sump. Together, these sources confirm that sump‑plug‑washers are relevant and fitted on this model.

On the 2011 Captiva 5, the sump‑plug‑washer’s job is simple but critical: it provides a crushable or compressible seal between the steel drain plug and the alloy sump. Without it, the plug can weep, the sump face can get marked, and over‑tightening to “make it seal” risks stripped threads. Whether it’s a copper/aluminium crush washer or a plug with an integrated rubber/nylon gasket, the washer is designed to deform once to create a tight, leak‑free seal under the bonnet.

Best practice during servicing is to replace the sump‑plug‑washer at every oil change. It’s a cheap bit that saves a mess on the driveway and protects the sump. Many Captiva 5 examples use an M14 x 1.5 drain plug, some plugs have a captive rubber gasket while others take a separate 14 mm crush washer. If the vehicle has the captive‑seal style, replace the plug (or the serviceable seal, if supplied separately) when the gasket is nicked, flattened, or hard. If it’s the crush‑washer type, treat it as single‑use and bin it once removed.

Handy signs the washer needs attention:

• Fresh oil weeping around the plug after an oil change
• Oily residue on the sump or subframe after a drive
• Needing extra grunt on the spanner to “stop” a slow drip

When refitting, clean the mating face on the sump, fit a new washer, and tighten the plug to the factory torque specified in the Captiva CG service data — not “by feel”. Always confirm the exact washer/plug type by VIN or engine code before purchase, as running changes exist across CG series years. Swapping the washer each service, alongside the oil and filter, keeps the Captiva 5 tidy, leak‑free, and easier to live with in Aussie and Kiwi conditions.

What size sump‑plug‑washer does a 2011 Holden Captiva 5 use?

Most Captiva 5 petrol models run an M14 x 1.5 drain plug, taking a 14 mm crush washer or a plug with an integrated rubber seal. Because there were running changes across the CG series, it’s smart to confirm by VIN or by checking the existing plug before buying parts.

Should the sump‑plug‑washer be replaced at every service?

Yes. Copper/aluminium crush washers are single‑use and should be replaced every oil change. If the plug has a captive rubber/nylon gasket, replace the plug or serviceable seal when it shows flattening, nicks, or hardening. It’s low‑cost insurance against leaks.

There’s oil weeping from the drain plug after an oil change — what now?

That usually points to a re‑used or incorrect washer, or a plug that wasn’t tightened to spec. Fit the correct new washer (or a new captive‑seal plug), clean the mating face, and tighten to the factory torque. If it still weeps, inspect the sump face and plug threads for damage.