Alternator Pulley Two Groove Steel – Fits Delco 10SI 12SI 15SI 27SI & Ford 1G 2G Alternators – 10mm Belt, 67mm OD, 17mm Bore – Replaces 24-1101, 1846787, C5AZ-10344-L

The STS Parts Two Groove Alternator Pulley (Part #24-1101) is a precision-machined component built from cold rolled steel for maximum strength and reliability. Designed to accommodate two 3/8" (10mm) belts, this pulley is ideal for alternator setups requiring dual belt routing. Compatible with a wide range of Delco and Ford alternator models, including Delco 10SI, 12SI, 15SI, 27SI and Ford 1G, 2G types, this pulley supports many applications across automotive, industrial, and agricultural equipment lines. Whether you’re restoring a classic car, upgrading a hot rod, or replacing worn components on farm equipment, this steel double groove pulley delivers consistent belt alignment and long-lasting performance. Package Includes: (1) Two-Groove Steel Alternator Pulley Pre-machined with 17mm bore for installation Ready for 10mm (3/8") dual belts Specifications: Pulley Type: Double Groove Belt Width: 10mm (3/8") Outer Diameter: 67mm Bore Diameter: 17mm Material: Cold Rolled Steel Condition: 100% New Replaces OEM Part Numbers: Delco 1846787, 1964758, 1968354, 1970830; Ford C5AZ-10344-L, C5TF-10A352-K2, E4TZ-10344-B; WAI 24-1101 Fits Alternator Models: Delco 10DN, 10SI, 12SI, 15SI, 27SI; Ford 1G & 2G Used On: Various vehicles and machinery from 1960s–1990s, including models by Chevrolet, Ford, GMC, Jeep, Case, Massey Ferguson, Hyster, International, and others.

• 🔩 Double Groove Efficiency: Built to support two 3/8" (10mm) belts, this pulley provides enhanced grip and power distribution—perfect for dual-belt systems in classic cars, tractors, and industrial applications.
• ⚙️ Precision Machined Steel: Crafted from cold rolled steel, this pulley offers excellent durability, consistent performance, and reliable wear resistance—ideal for high-rotation environments.
• 🔧 Broad Alternator Compatibility: Designed to fit Delco 10SI, 12SI, 15SI, 27SI and Ford 1G / 2G alternators, making it suitable for a wide range of vintage, hot rod, and utility vehicle setups.
• 📐 Exact Fit Dimensions: Engineered with a 67mm outer diameter, 17mm bore, and optimized for 10mm belt width. Confirm size before ordering to ensure proper alignment and function.
• 🛠️ Built for Versatility: Used on numerous models from brands like Chevrolet, Ford, GMC, Case, Massey Ferguson, Hyster, International, and more—spanning applications from 1960s muscle cars to agricultural and industrial machinery.