Mitsubishi Pajero Catalytic Converter

The Mitsubishi Pajero catalytic converter functions through a chemical process called catalysis. Its main role is to convert harmful exhaust gases such as carbon monoxide, nitrogen oxides, and hydrocarbons into less harmful emissions, thereby improving air quality. For optimal efficiency, it requires an operating temperature above 400 degrees Celsius, which means it is less effective during cold engine starts or short trips.

Signs that indicate a failing Mitsubishi Pajero catalytic converter include:

• Engine power loss or sluggish acceleration
• Unusual whistling or abnormal exhaust sounds
• Sulfur or rotten egg smell from the exhaust
• Engine error codes P0420 or P0430 detected by an OBD-II scanner

These symptoms impact vehicle performance and may also lead to increased emissions.

The catalytic converter typically becomes clogged or damaged after approximately 100,000 miles, particularly if the vehicle is frequently used for off-road driving or with low-quality fuel. Once damaged, it cannot be effectively cleaned or repaired with additives or cleaners, and replacement is necessary to restore proper exhaust function and emissions control.

Diagnosis involves the following methods:

• Using an OBD-II scanner to detect engine codes P0420 or P0430 indicating catalytic converter inefficiency
• Measuring exhaust gas temperatures before and after the catalytic converter with an infrared thermometer; similar temperatures may indicate clogging

These tests help confirm whether the converter is performing as required under federal and vehicle emission standards.

As of 2024, replacing a Mitsubishi Pajero catalytic converter typically costs between 800 and 2,500 US dollars depending on the model and whether an OEM (original equipment manufacturer) or aftermarket catalytic converter is selected.

Krosfou offers direct-from-factory high-quality stainless steel catalytic converters with a 3-year warranty, manufactured in Europe to strict standards, providing reliable performance designed to meet or exceed federal requirements.

Example for Mitsubishi Pajero 3.2 DI-D (V80, V90):

• Engine: 3.2 DI-D with 170 PS / 125 kW power
• Model Years: 2006/11 - 2008/08
• Engine Code: 4M41
• Euro Standard: Euro 4
• OE Part Number: 1584A210
• Length: 620 mm (Euro 5 models)

Newer Pajero IV and Puma Classic models feature Euro 5 compliant catalytic converters of similar dimension and construction quality.

Many modern Mitsubishi Pajero models are equipped with two catalytic converters. The first is a pre-catalytic converter located between the exhaust manifold and the main exhaust line that pre-filters gases. The main catalytic converter is positioned further downstream. This architecture helps meet tighter federal and environmental emission standards.

Krosfou supplies catalytic converters manufactured in high-grade stainless steel with advanced monolith coatings for lasting efficiency and precious metal performance grade.

Preventive care includes regular vehicle maintenance, using quality fuel only, and avoiding excessive short trips that prevent reaching optimal running temperature.

• Temporary cleaning can be attempted with fuel additives or moderate highway driving ("Italian tune-up") to raise converter temperature and burn off deposits, but this is not a permanent fix.
• Replacement with OEM or high-quality aftermarket converters is recommended when performance or emissions degrade.
• Installing a catalytic converter security shield is advised to prevent theft, which is common due to the precious metals in converters.
• Krosfou offers direct factory support, installation manuals, and technical assistance to ensure proper fit and performance on Mitsubishi Pajero vehicles.

Maintaining the catalytic converter properly ensures compliance with emission standards, improves exhaust management, and supports environmental protection.