GEMS P38 Alternator

[Maximumwarp]

I'm looking for the alternator upgrade to my 97 D1, which I believe is the 120 amp P38 Magnetti Marelli version. If a pulley swap is necessary for this, I'd need the correct pulley (my truck is sans-alternator currently). I also need the mounting bolts.

 

[logan_gibson]

I believe I have one, I can check after work today.

 

[robertf]

Is there a physical difference in the p38 and disco alt? I bought a p38 120 amp from rock auto, alternator shop tested it at 100 amp.

 

[WILL.TILLERY]

They had a 100 and 120 aftermarket for the P38. Rock auto probably had it listed as what was supposed to be on there and then sold whatever the vendor had in stock. The majority of the time the 100 would work just fine on the p38... especially coil conversion trucks with less draw.

Bosch makes a 120 as well. It is 240.00 new and we use those from time to time.

 

[CORover]

Is there a physical difference in the p38 and disco alt? I bought a p38 120 amp from rock auto, alternator shop tested it at 100 amp.

Bosch P38 will not fit on the DI and vice versa. I tried that when mine died, I had a spare P38 one laying around, and then I realized I had one from a 98 4.6 GEMS RR I pulled. The GEMS RR bolts right on the DI pulley and all.

 

[WILL.TILLERY]

That is correct.

Bosch is making a replacement alt now for the earlier rigs.

 

[Maximumwarp]

Found an alternator, but I do still need the mounting bolts. Anyone have a couple?

 

[DiscoClay]

That is correct.

Bosch is making a replacement alt now for the earlier rigs.

I know this is an old post but if anyone has the detailed part numbers for these new bosch marelli replacements, please drop them in here. I know the later bosch uses a different mount config.. so it certainly doesnt bolt up.