ARCO A275L Alternator TECHNICAL SPECIFICATIONS


Voltage 12V
Field Type P
Rotor Poles 16
Stator Size 138mm
Frame Size Large
Weight 14.9 lbs / 6.7 kg
Regulation Internal/External (IE) or
External Only (EX)
Output Voltage 14.1V (default)
Finish (Black) Cerakote or E-coating
Cut-In RPM 1,061 Alternator RPM
Maximum Alt RPM 19,000
Battery Post M8 Thread Post, Side Mount
Standard Pulley 49K6 (6-groove, 49mm)
Pulley Mount 17mm diameter shaft, 25mm long, threaded M17 x 1.5
Pulley Hardware M17 x 1.5 x 24mm nut, w/ 18mm ID x 29mm OD washer (Included)
Diodes 6 positive, 6 negative, 50A Rated, Avalanche
Max Output (Cold, 9,000 RPM) 311 Amps
Sustained Cruising Output
(Hot, 6,000 RPM)
227 Amps
Sustained Idle Output
(Hot, 3,000 RPM)
198 Amps
Max Continuous Operating Temperature 110°C / 230°F