The 21238 is a 12v 135 amp alternator, a new aftermarket direct replacement engineered to match the fit, form, and function of the original alternator. Specifications: - Voltage: 12V - Output: 135 amp - Rotation: Clockwise (CW) Vehicle Compatibility: - Makes: Honda (2017-2023) - Models include: Honda CR-V; Honda Civic; Honda Accord - Confirm exact fitment with your year, make, and model before ordering. Cross-Reference / Interchange Numbers: - Replaces / compatible with: 104211-4340, 21238, 31100-5PA-A01, 31100-5PA-A01-RM, 90-29-5985, CSP71. 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.