Parts for your 2019 Mitsubishi Eclipse cross-Exhaust gasket

2019 Mitsubishi Eclipse Cross exhaust gasket — what it does and when to swap it

Technical sources including the Mitsubishi Motors Eclipse Cross Service Manual (engine and exhaust sections for GF/GK/GL series, 2018–2020), the Mitsubishi ASA electronic parts catalogue (GF7W/GF8W), and major AU/NZ aftermarket catalogues for the 1.5T model confirm this vehicle uses multiple exhaust gaskets. These include the exhaust manifold-to-head gasket, turbo-to-manifold gasket, turbo outlet/front pipe gasket, and downstream flange or donut gaskets. So yes, an exhaust gasket is absolutely fitted to the 2019 Mitsubishi Eclipse Cross and it’s a relevant service item when the exhaust is disturbed or if a leak is present.

On the 2019 Eclipse Cross, exhaust gaskets seal the hot gas path from the cylinder head, through the turbo and catalytic converter, to the rear muffler. Their job is to prevent leaks that can trigger noise, fumes, lost turbo efficiency, skewed oxygen-sensor readings, and even fault codes. The manifold gasket is typically a multi-layer steel design for durability under turbo heat, while the turbo outlet often uses a crush ring or fire ring. Downstream joints commonly use flange or donut gaskets to accommodate movement and thermal expansion.

While there’s no fixed replacement interval, gaskets should be renewed any time the relevant joint is separated. Reusing old exhaust gaskets is false economy — once compressed and heat-cycled, they rarely reseal properly. During routine servicing, a quick check for sooty traces around flanges, a ticking or chuffing noise on cold start, or a whiff of exhaust under load can flag a failing gasket.

• Common clues it’s time to replace: ticking on start-up, hissing under boost, sulphur/exhaust smell in cabin, visible soot at joints, poor fuel economy, or a check engine light linked to O2/trim/boost.
• Best practice when replacing: allow the system to cool fully, pre-soak fasteners, support the exhaust to avoid stress on studs, fit new OEM-equivalent gaskets, spring bolts and self-locking nuts where specified, and torque to the values in the Mitsubishi service manual using the correct sequence (centre-out on flanges/manifolds).
• Avoid sealants near O2 sensors and the turbo/cat — most joints are designed to seal metal-to-metal with the gasket only. A tiny dab of high-temp anti-seize on exposed threads is fine, but keep it off gasket faces.

After installation, a short road test and a quick recheck for any fresh soot or noise once cooled helps ensure the joint has bedded in nicely. Sorted right, a quality exhaust gasket will give years of trouble-free service in Aussie and Kiwi conditions.

FAQs

Does the 2019 Eclipse Cross have both manifold and donut gaskets?
Yes. The 1.5T models use a multi-layer steel gasket between the cylinder head and exhaust manifold, a gasket between the turbo and manifold, a crush ring or gasket at the turbo outlet/front pipe, and flange or donut-style gaskets further down the system. Each joint type is designed for the temperature and movement it sees.

How often should the exhaust gasket be replaced?
There’s no set interval. Replace gaskets whenever a joint is opened, or if there are signs of leakage such as ticking on cold start, soot marks at a flange, fumes, or related fault codes. Using new hardware (spring bolts, locking nuts) with the gasket helps the repair last.

Can an exhaust leak harm the turbo or engine?
Upstream leaks can skew oxygen sensor data, affect boost control, and lead to underboost/overboost faults. Hot escaping gases can also heat-soak nearby components. Fixing leaks promptly protects performance, emissions gear, and the turbo itself.