This is a complete set of metric expansion plugs (aka Freeze Plugs) for all RX-7 rotary engine applications. The rear plate takes 4 plugs, the front 2. We toss in one more as a spare. There is also a smaller plug included that is used on the front plate in some applications.

We do not necessarily recommend replacing these plugs unless they are damaged, you believe they may be rusting through or the engine was overheated significantly.

Kit includeds 7 large and 1 small expansion plugs, which is enough for one engine.