⚡ Power your GM beast with Mechman — because average just won’t cut it.
The Mechman 390-Amp High Output Alternator is a premium upgrade designed for 1996-2020 GM Trucks and SUVs with 4.3L to 6.0L engines. Featuring a durable cast exterior and inclusive harnesses for dual model year compatibility, it delivers a powerful 390 amps output to ensure your vehicle’s electrical system stays robust and reliable. Ideal for professionals seeking a seamless, high-performance alternator replacement with exclusive availability on Desertcart.
| Manufacturer | Mechman Alternators |
| Brand | Mechman Alternators |
| Model | 14009390 |
| Item Weight | 16 pounds |
| Item model number | 14009390 |
| Exterior | cast |
| Manufacturer Part Number | 14009390 |
R**.
A great electrical upgrade for car audio!
Easy to install, charging is perfect, provides plenty of power for car audio applications! Perfect for stepping into beginner SPL competition.
M**
Well worth the money!
Works really good and performance is outstanding!
A**.
The best accessory to upgrade your electrical system.
Get one!I was in car audio at a high end professional level for about 15 yrs (1993-2008). Now at 47, I still love it and occasionally do installs for friends and family. Granted a lot had changed over the years but there is one thing I can tell you for certain, upgrading to an aftermarket high output alternator like this Mechman's is the single most effective accessory you can add to your vehicle's electrical system period!With everything I can turn on turned on, interior/exterior lights, aftermarket LEDs, AC front and rear, cell phones charging, a 2000 watt bass amp running at 1 ohm and a 500 watt 4 channel amp jammin all at the same time, the voltage DOES NOT DROP below 13.9 volts at idle!!! Before this, a brand new factory 160 amp alternator and 2 brand new AGM batteries could not keep up. At idle, voltage was 11.9. For my 07 Tahoe, 5.3l LT, the pulley was decently smaller so I did swap to their recommended belt size of 93.0 inches. Their chart will give the exact part number.I said to begin with....GET ONE! It's absolutely worth the money!
B**.
Works Great!
Alternator working really well on 2001 chevy Tahoe little to no voltage drop when Bass hits would definitely buy another..5.3 vortec engine original belt fit just fine Didn't need a shorter one.
M**O
Best of the best out there
Crazy good voltage easy install got the specified smaller belt for my vehicle fit with no issues cold start getting about 15.2 volts once everything is charged up and warm sitting at about 14.8v puts out real good power at idle 600-650rpm drops to around 14.3v with 2 agm batteries and a 4k amplifier and a 1400w amplifier
M**N
Worth the money
Great alternator voltage holds good now pushing around 5000 watt system with factory battery. Did the big 3 with it. It’s a need not a want if getting this alternator. Only proper is when installing if you have a brake booster and not a hydro booster. Your gauges will say something like check break booster. Doesn’t bother me any.
B**Y
Great upgrade for my Tahoe
Great alternator in my 98 Tahoe, with 2500 watts and subs!! Voltage doesn’t drop at all now
M**K
Quality item prompt delivery
Exactly as described recommended seller
Trustpilot
2 weeks ago
1 month ago
