The 18881 is a 12v permanent-magnet direct-drive starter, a new aftermarket direct replacement engineered to match the fit, form, and function of the original starter. Specifications: - Series: PMDD - Voltage: 12V - Rotation: Counterclockwise (CCW) Confirm exact fitment with your year, make, and model before ordering. Cross-Reference / Interchange Numbers: - Replaces / compatible with: 18881, 3303-556, 3304-639. 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.