The engine in the Ingersoll Rand G25 G40 Generator
Fitment for the Ingersoll Rand G25 G40 Generator centres on the Mitsubishi S4S: 3.3L / 202 cu in, 4-cyl inline, 98 x 110 mm bore x stroke, about @ 2600 rpm, Tier 2/3. Serial number on the block settles the exact version. New-surplus and rebuilt stock ships from Houston.