Perkins 3113E031 Alternator Pulley

The Perkins 3113E031 is a solid alternator pulley engineered to maximize alternator efficiency and ensure correct electrical power generation on Perkins diesel engines. Precise pulley dimensions are critical; differences in size can lead to reduced electrical output, overcharging, or undercharging conditions. This component is manufactured to strict factory OEM standards for structural longevity and precise mechanical alignment. Direct replacement for OEM part number 3113E031. Compatible with Perkins 1004 and 1103 engine families including 1004-42, 1004-40, 403A-15, 403J-17T, 1103A-33G1, 404EA-22T, 1103D-33, 1004-40T, and 403D-11. Also fits Perkins 1104C-44 industrial power units. Constructed from high-grade steel for enhanced durability under heavy-duty operating conditions in industrial, agricultural, and construction machinery applications. OEM cross-reference: Perkins 3113E031. Supersedes scientific notation reference 3.113E+34. Designed for easy installation with correct shaft and fitting dimensions matching genuine engine specifications.