The Supertech black‑nitrided exhaust valve described here fits Peugeot 306 engines with the XU10J4RS head and is offered as a single valve. It is specified as a nitrided exhaust replacement for that particular XU10J4RS application, intended for head repairs or valve service requiring the listed valve type.
Supertech Peugeot 306 (XU10J4RS) Black Nitrided Exhaust Valve - Single (Drop Ship Only)