Upgrade or repair your alternator with confidence using this 100% new, precision-machined 6-groove alternator pulley designed specifically for Delco AD230, AD244, and CS130D series IR/IF alternators. Engineered from cold rolled steel, this S6 class pulley delivers rugged durability and consistent performance. With a 57.06mm outer diameter, 21mm belt width, and a 17mm bore, it installs as a direct fit replacement for Delco OEM 10475747 / 747 and a wide array of unit numbers across GM, Isuzu, Saab, and AM General applications. The bidirectional rotation compatibility ensures versatility, while the exact dimensions (Hub to First Groove: 5.97mm; Overall Length: 29.03mm) maintain proper belt engagement and alternator speed. Ideal for professional rebuilds or DIY repairs. (For the tapered collar version, reference part 24-1285.) Compatibility / Replaces Replaces OEM: Delco 10475747, 747 Alternate / Cross Reference: See extensive unit numbers including Delco (10244795, 10392759, 10463408, etc.), GM equivalents, Isuzu (8104636510, 8104640840, 8104644760, 8152260030), Saab 15-22-6003, AM General 6019239. Note: For version with taper collar use part 24-1285. (You can include a condensed “fits most” compatibility section on Amazon with primary models if space; full vehicle applications are typically in a compatibility chart or answered via “Fitment” section if the platform supports.)