Just thought it may help some if I were to start and pin a topic with a list of part numbers that could come in handy for the 4JX1. Feel free to add stuff as you wish.
Main Oil Filter
Isuzu Part 8-97167-972-0
Ryco Z600
Nippon Max / Wesfil MO-024 / WZ554 *
Secondary Filter
Ryco Z79A
Cooper / Wesfil WZ79 *
Air Filter
Wesfil WA1081 *
Ryco A1081 (?? I think...)
Out of all the above, the Wesfil products are not only the cheapest, but also seem best quality / suited to the Jackaroo. The main filter from them, appears to be almost identical in marking to the OEM, minus the Isuzu branding...
* = Cheapest
Main Oil Filter
Isuzu Part 8-97167-972-0
Ryco Z600
Nippon Max / Wesfil MO-024 / WZ554 *
Secondary Filter
Ryco Z79A
Cooper / Wesfil WZ79 *
Air Filter
Wesfil WA1081 *
Ryco A1081 (?? I think...)
Out of all the above, the Wesfil products are not only the cheapest, but also seem best quality / suited to the Jackaroo. The main filter from them, appears to be almost identical in marking to the OEM, minus the Isuzu branding...
* = Cheapest