The Infiniti G35 typically uses two catalytic converters—one on each bank of the V6 engine. This two-cat setup is the standard factory arrangement for the G35 models produced from 2003 to 2008.
Factory exhaust layout
To understand the count, here is the standard layout for the G35’s VQ35DE-powered, dual-exhaust system.
- Two catalytic converters in the factory system—one on each bank of the V6 engine.
- Each converter sits on the downpipe from its respective bank, typically located near the engine, before merging into the mid-pipe.
- The dual-downpipe arrangement then feeds into a common mid-pipe and the rear exhaust system.
In summary, the typical Infiniti G35 uses two catalytic converters, aligning with the V6 dual-bank layout.
Markets, years and aftermarket notes
Notes on variations for different markets or aftermarket changes:
- Most factory G35s (2003–2008) have two catalytic converters total.
- Some aftermarket or non-standard systems may relocate, replace, or remove catalysts, altering the count from the stock configuration and affecting emissions compliance.
For precise specification on a particular vehicle, consult the official Infiniti service manuals or parts diagrams for that year and market.
Summary
In short, a typical Infiniti G35 has two catalytic converters—one for each bank of the V6 engine—forming a two-cat exhaust system common across 2003–2008 models. Deviations usually stem from aftermarket modifications rather than factory design.