The IDF carburettor model is also manufactured by Weber and is similar to the DCOE model in its design. It is a dual-throat carburettor that is well-suited for high-performance engines.

The IDF carburettor provides excellent fuel metering and throttle response, making it a popular choice for racing applications. It is also a good choice for engines with larger displacement and high-performance needs.

The main benefits of the IDF carburettor include its ability to deliver consistent fuel metering and reliable performance under high-stress conditions.