Parts for your 2013 Holden Commodore-Manifold gasket

2013 Holden Commodore manifold-gasket: what it does and when to replace it

Yes, a manifold-gasket is used on the 2013 Holden Commodore. Both the VE Series II (MY12.5) and early VF models were built with manifold gaskets on the intake and the exhaust sides across common engines like the SIDI V6 and the 6.0‑litre V8. This is supported by GM Service Information procedures for intake/exhaust manifold removal and installation, which specify gasket inspection/replacement, and by Holden/GM parts catalogues listing intake manifold gaskets and multi‑layer steel exhaust manifold gaskets for these engines.

On this Commodore, the manifold-gasket seals critical joints so air and exhaust flow stay exactly where they should. Up top, the intake manifold-gasket keeps unmetered air from sneaking into the engine. If it leaks, the car can idle roughly, throw lean mixture codes, or feel flat off the line. Down at the headers, the exhaust manifold-gasket prevents hot gases from escaping before the oxygen sensors, which helps the ECU read accurately and keeps things quiet and safe under the bonnet.

As part of routine servicing, the manifold-gasket doesn’t have a strict time or kilometre interval, but it should be inspected whenever there’s a drivability complaint, a ticking noise on cold start, a fuel trim/lean code, or an exhaust smell in the cabin. Any time the intake or exhaust manifold is removed—say for plugs, timing work, or coolant crossover access—GM SI calls for new gaskets on reassembly. Reusing flattened or heat‑cycled gaskets is a false economy.

Handy pointers for a 2013 Holden Commodore manifold-gasket service:

• Use the correct style: moulded rubber port gaskets on many V6 intakes, multi‑layer steel on V8 and V6 exhausts.
• Clean mating surfaces without gouging, avoid silicone unless the procedure specifically calls for a dab at a joint.
• Follow the factory torque and tightening sequence—especially on plastic intake manifolds—to avoid warping and future leaks.
• After replacement, clear fuel trims and check for vacuum or exhaust leaks with smoke testing or a scan of short/long‑term trims.

If the Commodore shows a high, hunting idle, hissing from the intake, a sharp ticking at the head on cold start, or a whiff of exhaust, it’s worth booking a gasket check. Fresh, correctly fitted manifold-gaskets keep the 2013 Commodore running sweet, efficient, and quiet.

Which 2013 Holden Commodore engines use manifold-gaskets?

Both the SIDI V6 variants and the 6.0‑litre V8 use intake and exhaust manifold-gaskets. The intake typically uses moulded rubber port gaskets in a composite manifold, while the exhaust uses multi‑layer steel gaskets at the cylinder head.

What are the signs a manifold-gasket is failing on a 2013 Commodore?

Intake side: rough or high idle, hissing noise, lean codes, or poor fuel economy. Exhaust side: ticking noise on cold start that softens warm, exhaust smell, or sooty marks at the flange. Any of these warrant an inspection.

Should the manifold-gasket be replaced preventively?

There’s no fixed interval, but best practice is to replace gaskets whenever the manifold is removed. If symptoms appear—or the car’s had overheating, warped flanges, or prior manifold work—fit new gaskets and follow the proper torque sequence.