The 7127SEC is a 12v 63 amp delco 10si-type internally regulated alternator, a new aftermarket direct replacement engineered to match the fit, form, and function of the original alternator. Specifications: - Series: 10SI - Voltage: 12V - Output: 63 amp Confirm exact fitment with your year, make, and model before ordering. Cross-Reference / Interchange Numbers: - Replaces / compatible with: 7127-SEC, 7127N-C, 7127NSE-120A-C, 7294NSE-C. 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.