Catalytic Converter 2001-2003 BMW 525i 2.5L

Pair of Front left and right Catalytic Converter 2001-2003 BMW 525i 2.5L

Excel Exhaust catalytic converters are designed to be durable and Premium-grade ceramic substrates are used to OEM performance and reliability standards.

OBDII & EPA COMPLIANT - To ensure the best quality, all our products are up to date with the latest regulations made by the Environmental Protection Agency.

GASKETS ARE INCLUDED - only if it shows in the picture.

NON-CARB COMPLIANT - WE DO NOT SHIP TO CALIFORNIA & NEW YORK. Not Legal for Use in California & New York, USA. This product will not pass the California or New York emissions test.

• Professional installation is highly recommended. the following steps should be taken before installation.
• Make sure the vehicle is in proper fuel controlFront O2 sensor should be switching around 450 mV and Rear O2 sensor is above or equal to 450mV, typically 650-850mV
• Repair all exhaust system leaks and make sure the vehicle is in proper fuel control. ProperAir/Fuel Ratio is essential
• Check for contamination. An internal leak in the cooling system would allow coolant to enter the exhaust system and poison the catalytic converter.
• Install new oxygen sensors