Roger Clark Motorsport Billet Aluminum High Temp Half Moon Seal (SINGLE), 2002-2014 WRX & 2004-2021 STi

The RCM Billet Half Moon seals (also known as cylinder head plugs) have been specifically designed to replace the problematic OE plastic seals which become hardened and brittle with the constant temperature changes, eventually leaking and requiring replacement again.
Please note, when ordering you will need to purchase 4 of these for a complete engine, please use the option to select 1 or 4 half-moons as required.

Included:
• (set of 4) Billet Half moons

Features:
• Manufactured from high grade aluminum
• engraved
• Fitting precisely into place and sealed with our SGA35 liquid gasket
• ensure that leaks on the rear of your cylinder heads become a thing of the past.