Looks like part that fits under valve cover. They are made of rubber and you would only need to replace them if yours have deteriorated such that oil is leaking front and rear. Even if leaking they may just need a thin coat of silicone sealer. bBetter known as camshaft seal plug.
TR7 Spider - 1978 Spifire - 1976 Spitfire - 1988 Tercel 4X4 - Kali on Integra - 1991 Integra
