Alternator Bosch or OEM Mazda

Check alternator voltage should be above 14V at 1500 RPM. Bosch alternators are crap anymore, I bought a new WAI global alternator, it has strong output so far. Only time will tell if it holds up.

I installed a Bosch re-manufactured unit. Under $200. It has a 24 month warranty and roadside assistance included.

Aftermarket units from Bosch and other are about $300.

The most expensive one at Rock is a Bosch for $186.79+ core.

Mine went out at like 105k swapped out a Bosch immediately but if not always go with denso.

Well I definitely wouldn't have gone aftermarket but I understand you might have been in a pickle

https://www.fcpeuro.com/products/volvo-alternator-bosch-al157x?ads_cmpid=21619732995

As far as why it's not working at all, you need very good clean connections including good ground connections everywhere

Bought a new bosch alternator and installed it.

I'm swapping my 90a Valeo alternator for a remanufactured Bosch one. (Which actually says Valeo on it but has a Bosch part number and came in a Bosch box.)

Bosch has a high failing rate unfortunately not like the good old days.

I bought an aftermarket bosch alternator, (new not refurbished) and after installing the pulley to 80NM (black part), I noticed a wobble and a brushing sound. The original alternator does not have this brushing sound.