The engine in the Cat 903C2
Fitment for the Cat 903C2 centres on the Cat C2.4-CR: 2.4L / 147 cu in, 4-cyl inline, 88 x 100 mm bore x stroke, about @ 2200 rpm, Tier 4 Final. Serial number on the block settles the exact version. New-surplus and rebuilt stock ships from Houston.