Toyota 4.2 Diesel – 390 Amps – XP Series

Toyota 1HZ (4.2 Diesel) 390 Amps, XP Series

PN:  T4.2-390XP

This Max-Amp heavy-duty alternator vastly outperforms the stock 1FZ-FE alternator, both at idle & at road speed.  Note on the chart below where the Max-Amp alternator vastly outperforms the stock alternator.

OEM Alternator                 Max-Amp Alternator

Amps @ Idle                                     60 amps                                 220 amps

Amps @Road speed                       80 amps                                 390 amps

The XP series of Max-Amp alternators are assembled using DENSO components and produce the highest idle output. They feature a larger housing while still retaining OEM fitment without any modification required. They run cooler and are virtually indestructible. This alternator is designed to be an exact replacement to the OEM alternator for the 1HZ engine. 

A precision CNC 6061T6 aluminum pulley with a .002 hard anodized coating is installed on each alternator for maximum output and durability. This XP Series alternator comes with an unprecedented full two-year warranty.

This alternator also fits the 1HD-FTE (4.2L turbo diesel) and 1HD-T (4.2L turbo diesel) engines.