Product Description
Need a 1-Wire Alternator for your 1989-2002 Dodge Ram pickup with the 5.9 Diesel Cummins? This unit has a maximum output of 200+Amps and will produce between 100A at idle depending on whether the engine is gas or diesel and shaft speeds. This unit will increase the charging capacity at all RPM Ranges with NO modifications. If you are putting the 5.9 Diesel powerplant into a vehicle not wired or equipped for it, this is your answer - no external regulator, no wiring. Just the main power feed wire.
Applications: 1989-2002 Dodge Ram with a 5.9L Cummins
Customer Installation Video HERE!
RECENTLY ADDED FEATURE
We have added an optional W-Terminal or TACH pickup wire to this alternator. This option is only available on these “SE” Denso / dodge alternators that eliminate the PCM. When you select this option we will provide a tach lead for connection to a diesel specific aftermarket tach. This is only available at the time of assembly and older units are not physically eligible for retrofit.
The connection is simple, the wire is provided by us but does not need to be used if no tach is intended.
This will not work with factory equipped tachometers or ignition based tachometers, only a stator signal tachometer. (tach shown is not included)
This link is to a tach that works, there are many versions on the market and this is not an endorsement just showing what specs you need.
WARNING: California PROP65 Cancer and Reproductive Harm Notice www.P65Warnings.ca.gov
Product Videos
Custom Field
Product Reviews
11 Reviews Hide Reviews Show Reviews
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Works great!
Everything works as advertised, I’ve driven about a thousand miles with it so far and no issues.
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200 amp 5.9alt
So happy with this product!! My charging issues have finally been solved! Worth the money!!
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1-wire on my 1989 W250 diesel
Shipping was on time and the fit and finish of the product is very good. Install was bolt in as advertised and pully size correct. I upgraded all of my wire to #2 welding cable (to battery + and the ground strap). Charges battery at 14.85-14.95 volts - tech at PA mention this at the top of the regulator set but is OKAY. Seems to handle grid heaters cycling on cold prairie Canadian winter days without trouble. I can't comment on the longevity of the alternator as I have only had it for a week. Will give 5 stars once I have run it for sometime.
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1 wire
Great product and top notch customer service
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The must have alternator
If you you have a Cummins conversion vehicle this alternator is a must have, no more external regulator, solved numerous of issues I had would recommend this alternator to anyone
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New alternator for my old truck
If you are reading this you are probably sick of having your voltage regulator failing and over charging your battery. I installled this alternator in a 91 Dodge 2500 with the 12 valve. The beauty of this setup is that you no longer have to deal with crappy regulators. Very happy so far!
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12v 1st gen . Solved my issue. Thanks.
Power issue solved..
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Denso Alternator
This alternator solved all my charging problems. One wire hook up couldn’t be any easier.
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simple buy, install, operation.
Bought one of these for my 03 12v cummins swapped chevy 2500hd. Didnt eant to deal with the pcm controlled alternator and the truck has alot of electronics. This thing hooked right up, looks factory, no wires to excite it at all- and it puts out a perfect 14.5v and has a ton of juice even at the low idle of a cummins. Little spendy but would buy again.
