To ensure you buy the correct catalytic converter, you’ll need a few specific pieces of information about your vehicle. In addition to the basic year, make, model and engine type, you may also need to know the transmission type or sub-model. And if your ride rolled off the line after 1995, you’ll also need your vehicle’s Engine Family Number (EFN). The EFN is a number given to your specific engine. Since some manufacturers might use the same engine in different vehicle models, or they might use different engines with the same model, the EFN is an important distinction. The EFN identifies the engine, and in turn the vehicle’s emissions.
Your vehicle’s EFN is located under your hood on the Vehicle Emissions Control Information (VECI) label. Depending on your make and model, the VECI label can be mounted in several possible locations. Typically, the label can be found on the actual underside of the hood or on the fender well. To see what they look like and where they are in a few of our sample rides, check out the video below.
Steps to Find Your EFN:
- Pop your hood
- Open your hood
- Look for a Emissions Sticker
- Locate EFN number
- Write down EFN and reference when buying a Catalytic Converter
You don’t need to struggle to find your Engine Family Number, just follow this video to find out what family your engine belongs to.