Identifying the 4326874rx inlet or outlet sides

Figuring out whether you're looking at the 4326874rx inlet or outlet can be a bit of a headache if the markings are worn off or if you're just staring at a big chunk of metal for the first time. It's one of those parts where direction really matters for your engine's health, and getting it backward is a mistake you definitely don't want to make. ...

April 23, 2026 · 6 min · Rogelio Nemorin