Your cart is empty.
Your cart is empty. Our alternators are designed to replace MerCruiser engine alternators. They're made to provide boaters with the best experience on the water. When it's time to replace your alternator, you have two options; buy an original MerCruiser part or an OEM replacement. DB Electrical 400-46022 alternator is an affordable option designed to fit perfectly, replace the original part, and deliver equivalent performance. It is compatible with Mercury Marine, Motorola, OMC, Sierra Marine, and other marine-specific engines. COMPATIBLE WITH/REPLACEMENT FOR:
Crusader: Various Models All
Lucas: Various Models 1985-On
Mando: Various Models 1985-On
Mercruiser: Model 120 1973-1989, Model 140 1973-1986, Model 165 1970-1982, Model 175 1987-1992, Model 185 1983-1987, Model 198 Mie 1977, Model 2.5L 1987-1989, Model 200 1985-1987, Model 205 1985-1991, Model 228 1977-1984, Model 230 1985-1987, Model 230 Mie 1981-1995, Model 255 MIE 1975-1980, Model 260 1978-1987, Model 260 MIE 1981-1987, Model 3.0 / 3.0Lx 1987-1995, Model 300 Tempest 1985-1986, Model 320 (Efi) 1987-1990, Model 330 1977-1987, Model 330 Mie 1977-1980, Model 340 Mie W/Borg Warner Mk4 1981-1987, Model 350 Mag Alpha 1986-1995, Model 350 Mag Alpha (4-BBL) 1996, Model 350 Mag Ski 1991-1996
OMC: Various Models 1985-On
Pleasurecraft: Various Models 1985-On
Lori
Reviewed in the United States on July 28, 2024
This works really well!
JR
Reviewed in the United States on August 26, 2023
Works good, seems to be well built. Has been on for 3 months and is still charging
Alexey
Reviewed in the United States on January 21, 2023
Overcharging with 15.15V.Amazon sends me to manufacturer, manufacturer sends me to Amazon, so in the end I have no technical support and they just keep me in the loop. I wanted to exchange it or be repaired under warranty, but Amazon does not offer exchange for the same item nor repairs (return only or exchange for the other useless stuff, even I still had 1 month for a return or exchange by Amazon), so literally no warranty either. Scam and bad product and bad manufacturer. No support. No warranty. Do not buy it. I have to return it and buy another one for a higher price because of the inflation…
Customer
Reviewed in the United States on September 13, 2021
This was an easy install on my 1985 Chris Craft with a 5.0 (228 hp) Mercruiser. The wire colors were exact same color and I was able to install this alternator in about 20 minutes. I took it out last week and it worked great. I have about 90 hours on it so far and doing great.
Braydon
Reviewed in Canada on July 27, 2021
Direct replacement for my Mercruiser 4.3L - please check the current model of your alternator to ensure it's a direct fit as well. Bolted right up and was very easy to wire. The windings seem to be better than the original alternator that I had which means that more power (amperage) is available to me if needed (this is a good thing by the way - more amperage = better). Of note, I found a belt tensioner gauge tool (Continental 9001 Krikit Tension Gauge) VERY helpful in setting the correct belt tension. The "1/2 inch deflection" method simply isn't reliable and will result in improper belt tension. So far I've ran the alternator for ~ 60 hrs. without any troubles.
buyer
Reviewed in the United States on July 17, 2021
As a professional in the business, at first look this appears to be a VERY good product, the aluminum pulley alone is a big improvement over the stamped steel OEM alternator pulley. Bearings seem to be VERY smooth, weight is slightly more than original ,indicating more windings. Every seems great.Anything goes wrong after installation I'll change this, but for now looks good..
Richie P
Reviewed in Canada on August 20, 2020
Alternator arrived very quickly, fit perfectly and works fantastic. Much better price than the local guys.
rob stevens
Reviewed in Canada on July 6, 2020
Fit and works great
Les Smith
Reviewed in Canada on July 26, 2020
Price and instill on my boat. It work great
Philstupidduty
Reviewed in the United States on May 20, 2020
The alternator was a direct replacement for the OE alternator and installed in less than 20 minutes. There was no guess work on the wiring as everything was color coded the same as the engine harness. The alternator has about five hours of run time so far and it is working flawlessly. I know there were some reviews about loud bearing noise but this one is good to go.
John Harrington
Reviewed in Mexico on February 21, 2019
Excellent
BrilliantBuyer
Reviewed in the United States on September 24, 2018
so, on my 1989 mercruiser 5.7 260hp with EI, it went in smoothly--no issues, whatsoever. The wiring is unclear, but after staring at it for about 90 seconds, it all made sense. purple to purple, red to red, and then the other two wires on the only two posts that are set up to accept wiring. after one week, it is working well--amp meter reads about 14. i expect this unit to not last as long as the OEM, esp in the marine environment, but for this money, you can't go wrong, i'd say. it's basically a part that you can switch out, easily enough, every few years--hell, it's cheaper than a battery, for god's sake, and a lot easier to lift and dispose of
Marc Gomez
Reviewed in the United States on July 7, 2018
This was a replacement for a 1986 Mercruiser 140HP 3L engine. It originally had a Mercruiser Mando made alternator. Worked great for 35 years. The AMN002 fit perfectly, even the red and purple wire connectors matched. Be careful when taking the old clear heatsink material off the old red and purple lines ... dont mess up the mating female connectors. Also make sure you have a good battery. Is worth it to use a new battery if yours is old. In addition if your boat has some years on it ... you best clean your battery terminals and connectors. Also take the positive cables off you starter, and wire brush (use a brass brush) them and the starter stud bolt. Do the same for you negative (black) wire that goes from you battery to the engine block. On all the above connections if you are using bolted connections, make sure you use stainless steel lock washers too keep the connections tight. After installation make sure you monitor the temperature of your AMM002. I had a bad red wire battery connection and the temp of the new alternator reached 230 degrees F. Use a laser hand held digital temperature gun. Once I cleaned and tightened my red starter post the AMN cooled right down and now runs at about 115 degrees F. Keep an eye on you voltage between battery posts should be around 14vdc. Hope this helps!
Recommended Products
