Rotor 28-129 303-12021

Rotor

Replace OEM(s): Delco

For: Delco 21SI Series 90-115A IR/EF Alternatorss

Used On: Delco 21SI Alternators

Amps: 100/115 Amps

Amps Draw: 6.8 Amps

Amps Low Output: 100 Amps

Body OD: 4.244in / 107.8mm

Components: 34-2170 Shaft 34-1285 Slip Ring

Condition: New

DE Length: 92mm

DE Shaft OD: 25mm

DE Shaft Pulley OD: 22.3mm

DE Threads: 5/8-18

Ground: Ground

Length: 7.894in / 200.5mm

Notes 3: 5/8-18Short SRE Bearing Type

Poles Count: 12 Poles

Poles Length: 54.5mm

Poles OD: 108mm

Poles Thickness: 2.252in / 57.2mm

Shaft OD (DE Bearing): 0.984in / 25mm

Shaft OD (Pulley): 0.874in / 22.2mm

Shaft OD (SRE): 0.669in / 17mm

Shaft Threads: 5/8-18

Slip Ring ID: 0.728in / 18.5mm

Slip Ring OD: 1.165in / 29.6mm

Specification: 19mm from slip ring to end of shaft

SRE Ctr Slipring Length: 77mm

SRE Length: 54mm

Voltage: 12 Volt

Weight: 7.22 lbs / 3.28 kg