Parts for your 1998 Mitsubishi Pajero-Air filter

1998 Mitsubishi Pajero Air Filter

The 1998 Mitsubishi Pajero is absolutely fitted with an engine intake air filter. This is confirmed by factory documentation such as the 1998 Pajero Owner’s Manual and Group Service Manual (Air Cleaner section) and by Australian and New Zealand filter catalogues from major brands that list dedicated elements for both petrol (6G72/6G74 V6) and diesel (4M40) engines. So, yes—an air filter is relevant and used on this model.

On a Pajero that works hard—touring, towing, or tackling corrugated tracks—the air filter’s job is to keep dust, sand, bugs, and debris out of the engine. Clean intake air helps the engine breathe properly, protecting cylinder walls, turbocharger (on turbo-diesels), and sensors, while maintaining decent fuel economy and performance. A fresh filter also helps keep emissions in check, especially important for high‑kilometre rigs.

For servicing in Aussie and Kiwi conditions, a practical rule-of-thumb is to inspect the air filter every 15,000 km and replace it about every 30,000 km under normal driving. In dusty or off‑road use, check it more often—every 5,000–10,000 km—and don’t hesitate to replace earlier if it’s heavily loaded. Reputable OE‑quality filters are worth it, they seal properly in the airbox and filter consistently without choking flow.

• Open the airbox under the bonnet and make sure the sealing surfaces are clean—no leaves or grit sitting in the housing.
• Fit the new element the right way up and ensure the rubber gasket seats evenly all the way around.
• Avoid blowing high‑pressure air through paper elements, gentle taps or low pressure from the clean side can help in a pinch, but replacement is best.
• If using an oiled cotton performance filter, don’t over‑oil it—excess oil can foul intake sensors.

Clues that the Pajero’s air filter is due include lazy throttle response, higher fuel use, darker exhaust smoke on a diesel, or more induction noise. The swap is usually a simple clip-and-lid job—no special tools. Given the conditions many Pajeros see, keeping a spare element in the back isn’t a bad shout, especially for big outback or high‑country trips. Following the factory schedule—supported by Mitsubishi’s service manuals and local filter catalogues—keeps the engine protected and the kilometres rolling smoothly.

Popular questions about 1998 Mitsubishi Pajero air filters

Which air filter fits my 1998 Pajero?
It depends on the engine: 3.0L or 3.5L V6 petrol, or 2.8L turbo‑diesel (4M40). All use a panel‑style element in the airbox, but dimensions vary by engine and market. Match by VIN or engine code, or cross‑check against an AU/NZ filter catalogue to ensure the correct element and gasket profile.

How often should it be replaced in Australian or NZ conditions?
Inspect around every 15,000 km and replace roughly every 30,000 km in normal use. If you’re driving on gravel, farm tracks, beaches, or desert roads, shorten those intervals—checks every 5,000–10,000 km and replace whenever the element is visibly loaded or performance drops.

Can the factory air filter be cleaned and reused?
The standard paper element is technically disposable. You can gently tap out loose dust or use very low‑pressure air from the clean side to get by, but it won’t restore full efficiency. For best engine protection and performance, replace the element. Aftermarket oiled‑cotton types are washable, but they must be re‑oiled correctly.