







⚡ Charge Ahead: Power Meets Precision for Your GM Beast
The Mechman 390-Amp High Output Alternator is a desertcart exclusive designed for 1996-2020 GM Trucks and SUVs. Delivering over 390 amps at 14.5-15V, it supports modern AGM and lithium battery systems with optional voltage boosting up to 17V. It includes all necessary harnesses for seamless installation across two major GM model year ranges, features versatile mounting options, and comes with a durable cast finish and 2-year warranty. Ideal for professionals upgrading their vehicle’s electrical system to handle high-demand accessories and audio setups.
| ASIN | B0DNRG6TM4 |
| Best Sellers Rank | #770,632 in Automotive ( See Top 100 in Automotive ) #3,213 in Automotive Replacement Alternators |
| Brand | Mechman Alternators |
| Customer Reviews | 3.6 3.6 out of 5 stars (9) |
| Date First Available | November 21, 2024 |
| Exterior | Natural |
| Item model number | AMP-14009390B |
| Manufacturer | Mechman Alternators |
| Manufacturer Part Number | AMP-14009390B |
| Model | AMP-14009390B |
A**R
High output alternator is a must!!!
A must upgrade for those bass heads easy to install comes with harness bypass pin you will need to run a smaller belt
E**K
Doesn’t fit
Doesn’t fit 2010 Silverado with a 4.8l ls! Don’t waist your time!
J**L
Exelente ,sigan fabricando mas igual de buenos
P**D
No Warranty Help
Have issue with the harness. Truck battery light on constantly. I’ve installed three of these prior with no issues. Asked for a replacement and none ever sent
Trustpilot
2 weeks ago
2 months ago