The 4003 is a 6v starter, a new aftermarket direct replacement engineered to match the fit, form, and function of the original starter. Specifications: - Voltage: 6V - Pinion teeth: 10 - Rotation: Clockwise (CW) Vehicle Compatibility: - Makes: Clark (1954-1964) - Models include: Clark Carloader / Truck Tractor; Clark Yardlift 20 / 40 / 60; Clark 6024 - Confirm exact fitment with your year, make, and model before ordering. Cross-Reference / Interchange Numbers: - Replaces / compatible with: 1107010, 1107086, 1107180, 1107401, 1107424, 1107479, 1107481, 1107958, 4003, 4003N-USA (plus 8 more on file). Why ePartsGlobal: specialist in heavy-duty starters, alternators, and charging-system electrical parts. Backed by a 1-year warranty, free shipping on orders over $19.95, and fast fulfillment. Ships from USA.