DB Electrical 400-52032 Alternator Compatible with/Replacement for 5.9L 5.9 Dodge Ram Pickup 99 00 01 1999 2000 2001 Cummins Diesel /56027221AB /121000-4280/12 Volt, CW Rotation, 136 AMP

I bought this for our 1999 Dodge 3500 Diesel truck. Our volts were fluctuating and Hubby wanted to replace the stock original alternator with this DB Electrical alternator. We were about to go on a major road trip for a month and wanted to make sure there were not any glitches. Easy to install. Quiet operation. So far no feedback, like some alternators seem to have. Excellent quality. Perfect fitment. Packaging was excellent. I purchased this item at full price.I rely on product reviews just like others to help make my purchase decisions so I try each product very carefully before reviewing and always do my best to leave honest opinions and provide as much facts as possible based solely on my experience.

Great alternator. It was an upgrade for me with the higher amerage. 6 months in and still working good.

Works as hoped.

New and came with a test output sheet. Perfect fit and good quality.

My transmission would jump in and out of torque converter lockup after many nights of google research I found out the alternator can cause this issue. I purchased this due to the cheap price and I was not disappointed! Great quality and so far is working great! Super easy to install myself!

Alternator died after 6 months of use.

Installed DB Electrical 400-52032 alternator on my 1999 Dodge Ram 2500 with 5.9 L Cummins because of electrical noise giving intermittent problems causing transmission shifts in and out of overdrive when traveling in the 45 to 50 mph range, a well known problem with this vintage Ram. Years ago, I improved the grounding between the ECM and the frame and the batteries which took care of the problem almost completely, but issues returned recently. Putting in this new alternator with new brushes and slip rings has now fixed all issues. Note that this noise issue is not about ripple current, it is associated with high frequency noise from sparking, etc. Test graph of output included with the unit (nice). The truck is 23 years old and the original BOSCH 6004ML0004 alternator, made in Mexico, was still working fine, except for too much noise (does not take much to interfere with transmission overdrive shifts in the 45 to 50 mph range). From the output graph that came with the product, the Manufacturer of the alternator is Quiming.

Excellent price. Durable quality material. Perfect fitment. Local parts store wanted close to 200 bucks plus a core. DB got me hooked up. Thanks again guys. Keep up the good work.