Product Overview
This high‑output aftermarket alternator is a direct‑fit replacement unit designed to restore factory‑level charging performance for select Infiniti Q50 and Q60 3.0L V6 vehicles. Rated at 170‑amp / 12‑volt with clockwise rotation, side‑plug orientation and S6 pulley design, this assembly matches OE form, fit and function. Comprehensive cross‑reference part numbers simplify parts identification for repair shops and DIY installers. Built with upgraded internal components, it delivers dependable charging output for daily‑driving and real‑world operating conditions.
Key Specifications
| Property | Value |
| Brand | MITSUBISHI |
| Voltage (V) | 12 |
| Amperage (A) | 170 |
| Rotation | CW |
| Pulley Type | Fixed |
| Pulley Grooves | 6 |
| Pulley Diameter (mm) | 55 |
Product Features
170‑Amp, 12‑V high‑output aftermarket replacement alternator
Clockwise (CW) rotation, side‑mount plug orientation, S6 pulley configuration
Direct‑fit OE‑equivalent design; no modifications required for installation
Matches original form, fit, and electrical performance
Premium internal parts: ball bearings, rectifier, regulator & brush holder, slip ring, terminal & insulator
Full cross‑reference interchange part numbers for easy lookup and ordering
Rigorous assembly quality to resist heat, vibration and typical on‑road stress
Ready‑to‑install complete unit, reduces extra assembly work during repair
Common Buyer Applications
Service & repair for Infiniti Q50 3.0L V6 (2016‑2024)
Service & repair for Infiniti Q60 3.0L V6 (2017‑2022)
Automotive repair shops replacing failed or under‑charging original alternators
DIY vehicle owners completing charging‑system restoration
Parts distributors sourcing interchange aftermarket charging‑system components
Fleet service and independent garages for Infiniti platform maintenance
FAQ
Q: Will this alternator bolt directly onto my vehicle without modification?
A: Yes. It is engineered as a direct‑fit replacement matching OE mounting points, plug position and pulley specification for compatible Infiniti Q50/Q60 3.0L V6 applications. Always confirm your VIN and vehicle year before purchasing.
Q: What is the amperage rating of this alternator?
A: Rated output is 170‑amps at 12‑volt system voltage.
Q: Does this unit come fully assembled? Do I need to buy separate internal parts?
A: The alternator arrives as a complete pre‑assembled unit with bearings, rectifier, regulator‑brush holder and slip ring installed. No additional internal component purchase is required for standard installation.
Contact ATL Motor
Looking for a 12V 170A alternator replacement cross-referenced with Lester 21100 or A3TX2391?
Contact ATL Motor with your required part number, vehicle application, or sample details. We can help verify compatibility and recommend suitable alternator replacement solutions for your market.
