There are different length centre muffler assemblies used on Mitsubishi Magna TL/TW models. Please measure your original exhaust before ordering.

• BI4901 / M5184: approximately 1750mm overall length – this listing
• BI4903: approximately 1650mm overall length – different version
• Measure the complete assembly from the front connection to the rear connection.
• Do not select the replacement part using the vehicle year alone.
• If you are unsure which version is fitted to your vehicle, contact Best Mufflers before ordering.

This is a large freight item. Due to the approximately 1750mm overall length, standard website freight calculations may not accurately calculate delivery charges.

• Please contact Best Mufflers for a freight quote before ordering.
• Freight cost will depend on your delivery location.
• Some residential and remote destinations may attract additional freight charges.
• A commercial delivery address may provide a more economical freight option where available.

This replacement centre muffler assembly is manufactured to provide factory-style fitment and dependable everyday service.

• Covered by the manufacturer's warranty against manufacturing defects.
• Warranty applies to the supplied exhaust component only.
• Correct identification of the required 1750mm or 1650mm assembly is the responsibility of the purchaser.
• Damage caused by incorrect installation, impact, worn engine mounts or modified exhaust systems is not considered a manufacturing defect.
• Verify emissions and registration requirements applicable in your state or territory.

Will BI4901 / M5184 fit my Mitsubishi Magna?

This centre muffler is designed for applicable Mitsubishi Magna TL and TW Sedan models fitted with the 3.5L V6 petrol engine. You must also check the length of your original assembly before ordering.

How long is BI4901 / M5184?

The BI4901 / M5184 centre muffler assembly measures approximately 1750mm overall.

Why do I need to measure my existing exhaust?

There are different length centre muffler assemblies used on these vehicles. The BI4901 / M5184 is approximately 1750mm long, while the alternative BI4903 is approximately 1650mm long. Checking the original assembly helps ensure you order the correct version.

What if my centre muffler measures 1650mm?

If your existing assembly measures approximately 1650mm, see BI4903 rather than the BI4901 / M5184 listed here.

Which gaskets are required?

We recommend fitting a new MBG021 front gasket and MBG030 rear gasket during installation.

Is this a direct-fit replacement?

Yes. Once the correct length has been identified, the assembly is designed to use the original-style exhaust connections and mounting positions under normal installation conditions.

Can this item be shipped?

Yes. However, because the assembly is approximately 1750mm long, it is classified as a large freight item. Please contact us for a freight quote before ordering.

Do you ship Australia wide?

Yes. Best Mufflers ships replacement exhaust parts throughout Australia. Freight for this large item must be confirmed before ordering.

Do you ship to the USA?

International shipping may be possible depending on destination and freight availability. Due to the size of this assembly, please contact us for a freight quote before ordering.

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🇦🇺 Best Mufflers
87A Planthurst Road
Carlton NSW 2218 Australia

Mon–Fri 8:00am–5:00pm (by appointment only)