ARCO Part #60125

Fits: O.M.C. Cobra. Replaces: Prestolite/Motorola, 12 Volt, 55 Amp, Internal regulator, Negative ground, 2-inch mounting foot, Single groove pulley included.

Replaces Part Numbers:
BRP-OMC 983424
BRP-OMC 984565
BRP-OMC 985465
BRP-OMC 985466
BRP-OMC 986008
BRP-OMC 988247
BRP-OMC 3853853
BRP-OMC 3854182
BRP-OMC 3854809
BRP-OMC 3857298
BRP-OMC 3860769
VOLVO 3850927-9
VOLVO 3853853-4
VOLVO 3854182-7
VOLVO 3854809-5
VOLVO 3857298
VOLVO 3860173
VOLVO 857298

SIERRA 18-6260

SIERRA 18-6842

· All alternators are engineered for performance and reliability.
· All alternators are engineered and manufactured with precision and quality.
· All alternators must meet or exceed OEM performance before being boxed


We believe that the best warranties are the ones you never have to use. However, if we determine an ARCO product to be defective under proper instillation and utilization conditions, we are obligated to replace or repair the product or issue a refund of the purchase price. Should a customer endure additional labor costs for a professional installation, ARCO will reimburse said customer. We stand behind our product and its quality.

ARCO Marine is a USA based manufacturer located in Pensacola FL. Established in 1960, we were pioneers in the O/E replacement parts segment and have a reputation synonymous with premium quality and part reliability. We over engineer our parts to exceed and outlast O/E standards, often times engineering out any part deficiencies. We use only the best input components and every part that ships out of our warehouse has been tested prior to boxing which provides us with some of the lowest failure rates in the marine engine parts industry.