
ARCO Marine Premium Replacement Alternator w/50mm Multi-Groove Pulley
MPN: 20815
$423.80

Premium Replacement Inboard Alternator with Single Groove Pulley - 12V 55A
Replacement alternator that will fit O.M.C. Cobra., Prestolite/Motorola, 12 Volt, 55 Amp, Internal regulator, Negative ground, 2-inch mounting foot, Single groove pulley included.
Features:
Warranty Information:
When properly installed, all ARCO products are warrantied against defects in materials and workmanship for a period of 12 months for leisure use and 90 days for commercial or racing applications.
Add an extra year of warranty to your rotating electric ARCO product (Tilt/Trim Motors, Alternators, Outboard Starters, and Inboard Starters) when you register your product within 30 days of purchase. You can register your product by visiting arcomarine.com/product-registration
Replaces:
BRP-OMC Alternator 983424
BRP-OMC Alternator 984565
BRP-OMC Alternator 985465
BRP-OMC Alternator 985466
BRP-OMC Alternator 986008
BRP-OMC Alternator 988247
BRP-OMC Alternator 3853853
BRP-OMC Alternator 3854182
BRP-OMC Alternator 3854809
BRP-OMC Alternator 3857298
BRP-OMC Alternator 3860769
VOLVO Alternator 3850927-9
VOLVO Alternator 3853853-4
VOLVO Alternator 3854182-7
VOLVO Alternator 3854809-5
VOLVO Alternator 3857298
VOLVO Alternator 3860173
VOLVO Alternator 857298
SIERRA Alternator 18-6260
SIERRA Alternator 18-6842
No accessories listed for this product.
| SKU | 60125 |
| UPC | 693006001395 |
| Brand | ARCO Marine |
| Category | Electrical |
| Country of Origin | KOREA, NORTH |
| Weight | 11.2 |
| Dimensions | 9 x 8 x 8 |
| Status | Active |
| Last Synced | 8/27/2026, 2:08:04 AM |
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| Feature | ![]() ARCO Marine Premium Replacement Inboard Alternator w/Single Groove Pulley - 12V 55A CURRENT | ![]() ARCO Marine Premium Replacement Alternator w/Single Groove Pulley - 12V, 55A | ![]() Balmar Alternator Protection Module APM12 - 12V | ![]() Victron 2M Extension Cable f/IP65 Chargers | ![]() Balmar Alternator Protection Module - 48V |
|---|---|---|---|---|---|
| Price | $264.59 | $8.51 | $84.40 | $14.45 | $139.73 |
| Brand | ARCO Marine | ARCO Marine | Balmar | Victron Energy | Balmar |
| Condition | New | New | New | New | New |
| Availability | In Stock | In Stock | In Stock | In Stock | In Stock |
| Weight | 11.2 | 9.75 | 0.1 | 0.52 | 0.12 |
| Dimensions | 9 x 8 x 8 | 8 x 8 x 7 | 10 x 4 x 0 | 7 x 5 x 1 | 8 x 5 x 1 |
| SKU | 60125 | 60050 | APM-12 | BPC900200014 | APM-48 |
| Country | KOREA, NORTH | KOREA, SOUTH | UNITED STATES | CHINA | UNITED STATES |
| View Item | View Item | View Item | View Item | View Item |
Price
$264.59