Alternator Denso or OEM Mazda

Make sure you’re getting a Denso alternator installed. The aftermarket ones are built shitty and will probably crap out on you again.

rebuilt my oem denso to avoid buying those other brands, they generally are very hit or miss and dont have a good warranty to back them up. denso all the way, i would buy one for my car if they were still available.

The Denso will last the longest, but I have a habit of buying the local store brand only because they give you a no-questions-asked lifetime warranty.

I would go OEM or get a Denso from Rockauto since Honda's alternator is kind of sensitive.

I just replaced the alternator on my 09, it cost me $190 for the part (Denso refurb - shipped, including taxes) from Rockauto.

Denso alternator was like $350 and it took us like 3 hours as total novices and that includes the 3 trips we ended up taking to NAPA.

Did my own alternator, Denso 300.00. Took about an hour.

Just make sure to buy either new OEM, used OEM, or a good rebuild like Denso. Parts store ones have a bad record of either being bad directly out of the box, or crapping out in short order.

Labor time is like .7 on the RX8 alternator if I remember my time at Mazda right… imma say like 900 or so for labor is a rip

I had this happen with a new Denso out of the box for my Subaru and didn’t notice the battery light wasn’t turning on for the bulb check (and in turn not charging my battery) but it also wasn’t turning on to warn me that it wasn’t charging so I thought it was all good, until my car died pulling into a parking spot lol, found that the voltage regulator had a bad ground path inside the alternator so the charging circuit would never turn on.