ACL RB4074 Nissan RB Small-End Connecting-Rod Bushing Not Bored

ACL RB4074 is a piston-pin/small-end connecting-rod bushing for the Nissan RB applications listed in the ACL catalog. It is supplied in the UNB, not-bored configuration and requires the appropriate machining and pin-clearance checks.

Application and Selection

The ACL Race Series application guide lists RB20DE/DET, RB25DE/DET, RB26DETT and RB30/RB30ET applications. Match the rod bore, pin diameter and finished clearance with the engine builder. The photo illustrates a group of bushings; confirm the quantity supplied and quantity needed for the build.

Specifications

Frequently Asked Questions

Is RB4074 supplied at its final pin bore? No. The manufacturer lists the UNB, not-bored configuration.

Is this a crankshaft main or rod-journal bearing? No. This is the small-end bushing at the piston-pin end of the connecting rod.

Related Engine Parts

Shop ACL engine components, engine bearings and oil pumps.