Our lower bushings are a direct fit for your Jec NJB 203.
Big Hammer Co is an aftermarket manufacturer for all the brands we sell. Big Hammer Co is not endorsed or sponsored by, or in any way associated with Jec. This product is an aftermarket part.
Any use of or reference to the Jec trademark is for the sole purpose of indicating compatibility or product fit, and is not meant to imply any affiliation or relationship between Big Hammer Co and Jec and/or the Jec trademark.