250A High Output Alternator – Boosts your vehicle’s charging system, perfect for audio, lighting, or custom electrical demands Fits 1962–1989 GM Applications – Compatible with small case V-belt style setups using 10Si or 12Si mounts V-Belt Pulley Design – Built for classic & custom applications Includes 2-Pin Plug & Pigtail – Easy installation & wiring Direct-Fit Installation – Installs easily with no need for major modifications Stock alternators weren’t made to handle modern upgrades — this one is! Whether you’re building a custom street machine, classic car, or high-performance project, the Brand X 250A Alternator provides the reliable power you need Bypass Instructions Included – Works with or without an external regulator ** Build time is 1 to 2 weeks for this unit ** The Brand X 250A Small Case Alternator is a high-output charging solution designed for classic GM vehicles from 1962 to 1989 using V-belt pulleys and 10Si or 12Si alternator mounts. Whether you're running a custom audio setup, additional accessories, or simply need a more reliable charging system, this alternator provides a strong 250 amps of power to keep your system running at peak performance. Built for easy installation and crafted from high-quality materials, this alternator is a direct-fit upgrade that enhances both reliability and electrical output without complicated modifications. It’s ideal for vintage vehicle enthusiasts who want modern performance while keeping the factory-style setup. Fits: GM models from 1962–1989 with small case V-belt style alternators (10Si/12Si). Please verify compatibility before purchasing.