The BLOX Racing Head Seal Retainer for the Honda B-Series is essential for maintaining the fuel injectors' integrity. This product ensures a secure and precise fit for the injector, effectively preventing leaks and enhancing overall engine performance. Available individually or as a set of four, the head seal retainers are designed to be used alongside the head seal grommets, which are sold separately. Whether replacing a single component or outfitting multiple fuel injectors, these retainers provide reliability and durability for your Honda B-Series engine.