UPDATE

The D-Series alternator will NOT work on a B-series motor.
I found this out the hard way and had to return the D-series Alternator I purchased to get the correct one, a B-series GSR alternator.

While they look very similiar, the mounting bracket on the D-series is very different than the bracket on the B-series.
The top mounting hole on the B-series alternator is NOT threaded while the D-series IS threaded. In addition, the D-series alternator top mounting bolt hole is almost 180 degrees from the bottom hole, while the B-series is offset and is ~130 degrees.

The D-series bolt gets threaded into the hole from the driver side to the passenger side, while the B-series uses a bolt from the passenger side to drivers side, with a nut on the end.

Also, the amperage rating is higher on the GSR alternator, 80 amps vs 70 amps for the D-series.

 

i also have a problem with my alternator, civic 01 dx . can someone refer me to a DIY or anything that can help installing it ??

 

Oh yeah, that makes sense I guess, a little surprising at first but since they use different plug gap it makes sense it would put out more amps. I guess I assumed it would be different coil or something to provide more juice.

The problem with the top mount would be easy to get around of course but the bottom not so much unless you could make the D series mount fit on a B motor but it's a non-issue now that we know they put out different amperages.

Thanks for the update.

 

hmmm I could have sworn the alternator that I used was from a D series. It was one I had in the garage from another swap. Sorry for the misinformation, I never would have thought it was from one of my B swaps from a while back.