Blox Racing Billet Block Guards B-Series B16 B18

BLOX Racing Engine Block Guard. BLOX Racing engine block guards help strengthen and support the upper cylinder walls in open-deck Honda engines. CNC-machined from AL6061, the BLOX Racing engine block guard also provides maximum coolant passage to the head minimizing the risk of head gasket failure and cracked cylinder sleeves. BLOX Racing Billet Block Guards are necessary for forced-induction engine applications.