Arrowhead Electrical 410-52331 High Torque New Starter for Harley-Davidson 1340cc 80ci Evo V-Twin

The Arrowhead Electrical 410-52331 is a brand-new, high-torque replacement starter motor engineered for Harley-Davidson motorcycles equipped with the 1340cc (80ci) Evolution V-Twin engine. Designed as a direct OEM replacement, this OSGR (Offset Gear Reduction) starter delivers reliable, consistent cranking power to get your Harley fired up quickly and efficiently.

Built to meet or exceed original equipment specifications, this starter features an 18-tooth drive gear and operates on a standard 12-volt system with clockwise rotation. The dual-threaded output shaft accepts both 10-32 and 1/4-20 jackshaft bolts for flexible installation compatibility.

Key Features:

• Type: OSGR (Offset Gear Reduction) — same design as the OEM unit
• Voltage: 12V with clockwise (CW) rotation
• Drive Teeth: 18-tooth pinion gear
• Mounting: Dual 9.0mm ID unthreaded mounting ears
• Output Shaft: Dual-threaded to accept both 10-32 and 1/4-20 jackshaft bolts
• Construction: Sealed housing to block moisture and performance-robbing residue from internal components
• Brand new unit — not remanufactured or rebuilt

Replaces OEM Part Numbers:

• Harley-Davidson: 31558-90, 31558-94, 31553-90, 31553-94
• Denso/Nippondenso: 128000-8220, 128000-8221, 228000-2550, 228000-2551, 228000-2552
• Cross-references: 18446, 3952, 46-3011

This starter is compatible with a wide range of Harley-Davidson Touring, Softail, Dyna, and FXR models including the Electra Glide, Ultra Classic, Tour Glide, Road King, Heritage Softail, Fat Boy, Dyna Super Glide, and Low Rider equipped with the 1340cc Evo V-Twin engine from 1989 onward.