Operation CHARM: Car repair manuals for everyone.
Home >> BMW >> 2001 >> M3 Convertible (E46) L6-3.2L (S54) >> Repair and Diagnosis >> Powertrain Management >> Emission Control Systems >> Catalytic Converter >> Service and Repair >> Rear Converter
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Rear Converter


Removing And Installing/Replacing Catalytic Converter

Warning: Scalding hazard!

Only perform these tasks after exhaust system has cooled down.
Remove underbody protection.

US version:
Catalytic converters are located in exhaust manifolds.
Remove and install both exhaust manifolds.





ECE version:
Release screws.
Unclip both plug connections (1) and disconnect.
Disconnect both plug connections.

Note: Plastic holder with both cables of monitor sensors is removed with catalytic converter.


pro multis · About Operation CHARM