Parts for your 2022 Mitsubishi Asx-Manifold gasket

2022 Mitsubishi ASX Manifold Gasket — What It Does and When to Replace

Yes, the 2022 Mitsubishi ASX uses manifold gaskets. According to the Mitsubishi Motors Service Manual for ASX/RVR (2019–2022, Engine – Intake and Exhaust) and the Mitsubishi ASA electronic parts catalogue, the 2.0L and 2.4L MIVEC engines (4B11/4B12) in the ASX are fitted with both an intake manifold gasket and an exhaust manifold gasket. These gaskets seal the mating surfaces between the cylinder head and the manifolds, so they’re absolutely relevant to the model.

On this ASX, the intake manifold gasket keeps unmetered air out of the engine so it can manage fuel trims properly and run smoothly. The exhaust manifold gasket seals hot gases on their way to the catalytic converter, reducing noise, preventing fumes under the bonnet, and protecting nearby components from heat and soot. Over time, heat cycling, vibration, and age can flatten or harden gasket material, which is when leaks start to show up.

They’re not a routine, time-based replacement item. Instead, they’re replaced when the manifold is removed or if there are signs of a leak. Any time the intake or exhaust manifold comes off—for example, for carbon cleaning, sensor replacement, or other engine work—new gaskets should go in. It’s cheap insurance against vacuum leaks and exhaust blow-by.

Owners and workshops looking after a 2022 ASX should keep an eye out for:

• Rough idle, a hissing sound, lean codes (like P0171), or poor fuel economy from intake leaks
• Ticking on cold start, exhaust smell in the cabin or engine bay, soot around the flange from exhaust leaks
• Whistling under load or noticeable power loss

When replacing, clean both mating surfaces properly, check for warpage, and torque the fasteners in the recommended sequence. Using genuine or high-quality aftermarket gaskets is smart, especially for the exhaust side where heat and expansion are harsh. There’s no re-torque step specified once it’s heat-cycled, so getting it right on installation matters.

In Aussie and Kiwi conditions—lots of short trips, heat, and occasionally dusty roads—those checks during regular servicing go a long way. If the manifold’s being disturbed for other jobs, budget for new gaskets at the same time to avoid doing the work twice.

Popular questions about the 2022 Mitsubishi ASX manifold gasket

Does the 2022 ASX actually have manifold gaskets?
Yes. The ASX’s 2.0L/2.4L MIVEC engines use an intake manifold gasket between the intake manifold and cylinder head, and an exhaust manifold gasket between the exhaust manifold and the head. They’re standard sealing parts used on modern petrol engines to keep air and exhaust where they belong.

What are the signs a manifold gasket is leaking on a 2022 ASX?
Intake leaks often show up as a rough or high idle, a check engine light with lean fuel trim codes, or a tell-tale hiss. Exhaust leaks usually sound like a ticking on cold start, leave light soot near the flange, or create a faint exhaust smell under the bonnet. A drop in fuel economy or drivability is common either way.

Do manifold gaskets need routine replacement, and what might it cost?
They’re not a scheduled item, replace them if they leak or whenever the manifold is removed. Parts are generally modest in price, and labour varies with access: intake manifolds can take longer due to plumbing and sensors, while exhaust side time depends on fastener condition. Many owners combine gasket replacement with related repairs to save on labour.