The Carrillo single Pro-H connecting rod is specified for Nissan/Infiniti/Datsun RB25 and RB26 engines and uses a 3/8-inch CARR bolt as listed. This shopper-facing description identifies the part as an individual high-strength replacement connecting rod for those RB-series engines, reflecting only the application and bolt specification provided by the source text.
Carrillo Nissan/Infinity/Datsun RB25/RB26 Pro-H 3/8 CARR Bolt Connecting Rod - Single