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The available OEM alternators for the 1HD-FTE (4.2L turbo diesel) engine are rated up to 80 Amps and only produce 60 Amps at idle. This SBC heavy-duty alternator generates a maximum of 250 Amps at normal driving speeds and produces 185 Amps at idle. With this alternator, you are gaining 125 Amps at idle and up to 170 Amps at cruising speeds.

This alternator is designed to be an exact replacement to the OEM alternator for the 1HD-FTE engine and will directly bolt-on with no modifications necessary. A precision CNC 6061T6 aluminum pulley with a .002 hard anodized coating is installed on each alternator for maximum output and durability. This alternator comes with a full one year warranty.