New
Arrivals/Restock
Small Frame Alternator, Volvo Mercruiser OMC, 12 Volt, 78 Amp, 20051
4.9 (150 items)
Limited Time SaleUntil the end
20
31
35
$130.68 cheaper than the new price!!
Free shipping for purchases over $99 ( Details )
Free cash-on-delivery fees for purchases over $99
Free cash-on-delivery fees for purchases over $99
See all stores
Please note that the sales price and tax displayed may differ between online and in-store. Also, the product may be out of stock in-store.
New $217.80
Product details
| Management number | 204554886 | Release Date | 2025/10/30 | List Price | $87.12 | Model Number | 204554886 | ||
|---|---|---|---|---|---|---|---|---|---|
| Category | |||||||||
Small Frame Alternator, Volvo Mercruiser OMC, 12 volt, 78 amp, 20051.
API 1-wire alternators may need additional engine rpm over idle speed to activate internal voltage regulators. Simply rev the engine and alternator will excite and charge properly. This situation is due to high output performance of API Marine alternators of 78-94 amps. A 3-wire version of any of the 1-wire alternators may be substituted and the alternator will be activated by the key switch. API #s 20030. 20037. 20044. 20051. 20075. 20091 & 20092.
- 20051 (New 12 volt, 78 amp)
- Fits Merc, OMC, Volvo, & many others
- Replaces Merc #'s 56045, 59755, 69729, 78403A 1, A 2
- 1-Wire Hook-Up
- Ignition Protected
- Neg. Ground
API 1-wire alternators may need additional engine rpm over idle speed to activate internal voltage regulators. Simply rev the engine and alternator will excite and charge properly. This situation is due to high output performance of API Marine alternators of 78-94 amps. A 3-wire version of any of the 1-wire alternators may be substituted and the alternator will be activated by the key switch. API #s 20030. 20037. 20044. 20051. 20075. 20091 & 20092.
Alternators & Regulators for Marine Engines
Correction of product information
If you notice any omissions or errors in the product information on this page, please use the correction request form below.
Correction Request Form