I was able to get my hands on the discontinued version of this adapter. Part #M-6880-A50. I bench compared it to the new version part #M-6880-B50. Overall the new updated adapter is a better quality product. An advantage is the no-offset allowing for more vertical placement. Once installed I will followup with my observations.
Generation 1 (M-6880-A50)
- Cast aluminum body.
- Rough ends on most parts that will need you to file down.
- Steel oil nipple with correct threads for filter (3/4" - 16).
- Steel nipple has a small internal cross section compared to second generation. ~11mm Allen vs 14mm Allen.
- Steel banjo bolt with straight drilled passage holes.
- Filter is offset by about 18mm (0.71") to the left off center from banjo bolt.
- Single filter passage
Generation 2 (M-6880-B50)
- Machined aluminum body.
- Clean edges on all parts.
- Steel oil nipple with wrong threads for filter (M22 - 1.5). Will require correct adapter or different filter.
- Steel nipple has a larger cross section compared to first generation. 14mm Allen vs ~11mm Allen.
- Aluminum banjo bolt with countersunk and clean holes.
- Filter is in plane with the existing filter location.
- 2 oil filter passages that are smooth and wide.