Parts for your 2024 Mitsubishi Asx-Exhaust gasket

2024 Mitsubishi ASX Exhaust Gasket — What it does and when to replace it

Based on technical sources — specifically the Mitsubishi Motors Service Manual (Group 15: Exhaust System) for the GA-platform ASX/RVR used in Australia and New Zealand through MY2024, and the Mitsubishi ASA electronic parts catalogue — the 2024 Mitsubishi ASX is fitted with exhaust gaskets. These include a cylinder head–to–exhaust manifold gasket and sealing gaskets at the front pipe/catalytic converter joints. So yes, an exhaust gasket is relevant and used on the 2024 Mitsubishi ASX.

On the ASX, the exhaust gaskets do a simple but crucial job: they seal super-hot exhaust gases at the joints so nothing leaks before it reaches the catalytic converter and mufflers. That keeps the cabin free of fumes, stops that annoying ticking sound on cold starts, prevents soot marks around flanges, helps the O2 sensors read accurately, and keeps emissions and performance on spec.

Locations you’ll typically find include: a multi-layer steel (MLS) gasket between the cylinder head and the exhaust manifold, a ring/donut or flat gasket where the front pipe meets the catalytic converter or manifold outlet, and flat gaskets at downstream flanges. The service literature specifies replacing these gaskets any time the joint is disturbed, using the correct sequence and torque for the fasteners. Don’t add liquid sealant unless the manual explicitly calls for it — the gasket material and surface finish do the sealing.

Signs it’s time to replace a gasket on a 2024 ASX can include:

• Sharp ticking noise on start-up that softens as it warms
• Exhaust smell near the engine bay or under the car
• Black sooty traces around a flange or joint
• Poor fuel economy or sluggish response
• Check engine light with mixture or catalyst codes (e.g., from skewed O2 readings)

During routine servicing, it’s smart to inspect the flange areas, springs and studs, especially if the vehicle has kissed a speed bump or done gravel kays. If the exhaust is removed for other work, budget new gaskets and, where specified, new spring bolts or nuts. A light touch of high-temp anti-seize on fastener threads (not on the gasket faces) helps future serviceability. Sticking with OEM-spec MLS or equivalent quality gaskets ensures the ASX’s 2.0L engine stays quiet, clean and compliant.

Popular questions about 2024 Mitsubishi ASX exhaust gaskets

Where are the exhaust gaskets on a 2024 ASX?
They’re typically at the cylinder head–to–exhaust manifold, the front pipe to the manifold or catalytic converter, and at downstream flange joints. The Mitsubishi service manual and ASA parts catalogue both show these gasket positions for the AU/NZ 2.0L ASX.

Should sealant be used instead of a gasket?
No. The OEM design relies on correctly specified gaskets and proper torque. High-temp RTV is not a substitute unless the service procedure specifically allows it at a particular joint, which is uncommon for the ASX exhaust.

How often should exhaust gaskets be replaced?
They’re not a time/kilometre item. Replace when a joint is disassembled or if symptoms of a leak appear. During regular services, a quick inspection for soot, noise or loose hardware is all that’s usually needed.