-22% sale
Arco Qualifies for Free Shipping Arco Rebuilt Alternator Inboard/Outboard #40152
00
DAYS
00
HRS
00
MIN
00
SEC
Arco Arco Rebuilt Alternator Inboard/Outboard #40152 $254.97 $323.83
Arco 40152 AlternatorsFits: OMC. Replaces: Prestolite. 12 Volt, 61 Amp, internal regulator, negative ground. Single groove pulley included. Uses VR404 replacement regulator for Prestolite alternator (not required for Arco replacement alternator).Charging System: AlternatorArco Rebuilt Alternator I/O 40152Normalized SKU: 40152UPC Code: 693006001234
-20% sale
Arco Qualifies for Free Shipping Arco New Outboard Alternator #20840
00
DAYS
00
HRS
00
MIN
00
SEC
Arco Arco New Outboard Alternator #20840 $398.91 $497.88
Arco 20840 AlternatorsFits: Mercury Outboard 2.5L 12 Volt, 50 AMP Replaces: Mercury 881248T, 875285T1, 88955; Delco 19020703, 19020706 Internal Fan 2-inch mounting foot Multi-groove serpentine pulley included Includes wire/plug connectorCharging System: AlternatorArco New Outboard Alternator 20840Normalized SKU: 20840UPC Code: 693006008202
-20% sale
Arco Not Qualified for Free Shipping Arco Marine Power 12v 70a Alternator #20830
00
DAYS
00
HRS
00
MIN
00
SEC
Arco Arco Marine Power 12v 70a Alternator #20830 $359.71 $448.96
Arco 20830 Alternators Alternator (Marine Power) 12V 70A 20830 Fits Marine Power 12 Volt 70 Amp Internal fan 2-inch mounting foot Double pulley included Charging System: AlternatorNormalized SKU: 20830UPC Code: 693006008196
-22% sale
Arco Qualifies for Free Shipping Arco Inboard Alternator 65a #20815
00
DAYS
00
HRS
00
MIN
00
SEC
Arco Arco Inboard Alternator 65a #20815 $270.10 $343.04
Arco 20815 AlternatorsPremium Replacement Alternator with 50mm Multi-Groove PulleyReplacement alternator that will fit Mercruiser 4.3L-6.2L, 12 Volt, 70 AMP, Internal Fan, 50-mm multi-groove serpentine pulley included.Features: 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 Replaces:DELCO Alternator 19020611DELCO Alternator 19020612MERCURY Alternator 863077TPLEASURECRAFT Alternator RA097007SIERRA Alternator Alternator 18-6298PROTORQUE Alternator PH300-0035MPPARTS Alternator ADR0298*ARCO Assurance 12-month part and labor warranty protection Charging System: AlternatorArco Alternator 20815Normalized SKU: 20815UPC Code: 693006008264
-22% sale
Arco Qualifies for Free Shipping Arco New Alternator 70a 12v #20800
00
DAYS
00
HRS
00
MIN
00
SEC
Arco Arco New Alternator 70a 12v #20800 $217.54 $276.29
Arco 20800 AlternatorsPremium Replacement Alternator with 65mm Multi-Groove Pulley - 12V 70AReplacement alternator that will fit Mercruiser 4.3L - 8.2L, 1998-Up, 12 Volt, 70 AMP, Internal Fan, 65-mm multi-groove serpentine pulley included.Features: 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 Replaces:DELCO Alternator 19020601DELCO Alternator 19020609MERCURY Alternator 862031TMERCURY Alternator 862031T1Sierra Alternator 18-6293Protorque Alternator PH300-0034Protorque Alternator PH300-0035MPPARTS Alternator ADR0299MPPARTS Alternator ADR0316*ARCO Assurance 12-month part and labor warranty protection Charging System: AlternatorArco New Alternator 20800Normalized SKU: 20800UPC Code: 693006008172
-22% sale
Arco Qualifies for Free Shipping Arco New Alternator Mercuiser 3.0L 85a #20810
00
DAYS
00
HRS
00
MIN
00
SEC
Arco Arco New Alternator Mercuiser 3.0L 85a #20810 $266.27 $338.19
Arco 20810 AlternatorsFits: Mercruiser 3.0L 1999-UP: 12 Volt, 70 AMP Replaces: Mercury 862030T; Delco 19020600, 19020604 Internal Fan Single groove pulley includedCharging System: AlternatorArco New Alternator 20810Normalized SKU: 20810UPC Code: 693006008226
-22% sale
Arco Qualifies for Free Shipping Arco Alternator Remanufactured Mercruiser 69729 70a 12v #20102
00
DAYS
00
HRS
00
MIN
00
SEC
Arco Arco Alternator Remanufactured Mercruiser 69729 70a 12v #20102 $191.79 $243.58
Arco 20102 AlternatorsPremium Replacement Alternator with Single Groove Pulley - 12V 70AReplacement alternator that will fit Mercruiser, BRP-OMC, 12 Volt, 70 Amp, Self-exciting, Ignition protection screens, Internal regulator, Negative ground, 1-wire connection, 2-inch mounting foot, Single groove pulley included.Features: 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 Replaces:MERCURY 32701MERCURY 47456A1MERCURY 56045MERCURY 59755MERCURY 69729Sierra 18-5950*ARCO Assurance 12-month part and labor warranty protection  Charging System: AlternatorArco Alt.(Rem.)Mc#69729 20102Normalized SKU: 20102UPC Code: 693006001128
-22% sale
Arco Qualifies for Free Shipping Arco Alternator Remanufactured Mercruiser 78403A2 #20104
00
DAYS
00
HRS
00
MIN
00
SEC
Arco Arco Alternator Remanufactured Mercruiser 78403A2 #20104 $225.28 $286.13
Arco 20104 AlternatorsFits: Mercruiser, OMC. 12 Volt, 70 Amp, Ignition protection screens, internal regulator, negative ground 2-wire plug. Single groove pulley included. Uses VR200 replacement regulator.Charging System: AlternatorArco Alt.(Rem.)Mc#78403a2 20104Normalized SKU: 20104UPC Code: 693006001142
Sold out -14% sale
Balmar Qualifies for Free Shipping Balmar Alternator 170a Kit 12v 1-2in Single #XT-SF-170-K6-KIT
00
DAYS
00
HRS
00
MIN
00
SEC
Balmar Balmar Alternator 170a Kit 12v 1-2in Single #XT-SF-170-K6-KIT $1,361.09 $1,578.86
Balmar XT-SF-170-K6-KIT AlternatorsAlternator 1-2" Single Foot K6 Serpentine Pulley Regulator & Temp Sensor - 170A Kit - 12VBalmar offers a wide range of alternator power upgrades designed specifically for marine industry applications. Balmar installs high reliability bearings, robust rectifier diodes and improved heat-sinking capabilities on all our alternators to ensure improved system reliability combined with increased charging power.Features: 1-2" Single Foot K6 Serpentine Pulley Regulator & Temp Sensor 170A Kit 12V Specifications:AFD = NONE Positions = NONE Lockable = NONENormalized SKU: XTSF170K6KITUPC Code: 676205500869
Sold out -17% sale
Balmar Qualifies for Free Shipping Balmar Alternator 170a 12v Vortec #XT-VT-170-K6
00
DAYS
00
HRS
00
MIN
00
SEC
Balmar Balmar Alternator 170a 12v Vortec #XT-VT-170-K6 $1,004.46 $1,205.36
Balmar XT-VT-170-K6 AlternatorsAlternator Vortec K6 Serpentine Pulley - 170A - 12VBalmar offers a wide range of alternator power upgrades designed specifically for marine industry applications. Balmar installs high reliability bearings, robust rectifier diodes and improved heat-sinking capabilities on all our alternators to ensure improved system reliability combined with increased charging power.Features: Vortec K6 Serpentine Pulley 170A 12V Specifications:Positions = NONE Lockable = NONE AFD = NONENormalized SKU: XTVT170K6UPC Code: 676205500876
Sold out
Balmar Qualifies for Free Shipping Balmar Alternator 170a 12v Vortec Internal Reg #XT-VT-170-IR
00
DAYS
00
HRS
00
MIN
00
SEC
Balmar Balmar Alternator 170a 12v Vortec Internal Reg #XT-VT-170-IR $539.00
Balmar XT-VT-170-IR AlternatorsAlternator Vortec Internal Reg K6 Serpentine Pulley - 170A - 12VBalmar offers a wide range of alternator power upgrades designed specifically for marine industry applications. Balmar installs high reliability bearings, robust rectifier diodes and improved heat-sinking capabilities on all our alternators to ensure improved system reliability combined with increased charging power.Features: Vortec Internal Reg K6 Serpentine Pulley 170A 12V Specifications:Positions = NONE Lockable = NONE AFD = NONENormalized SKU: XTVT170IRUPC Code: 676205500951
-17% sale
Balmar Alternator 170a 12v 1-2in Single #XT-SF-170-K6
00
DAYS
00
HRS
00
MIN
00
SEC
Balmar Balmar Alternator 170a 12v 1-2in Single #XT-SF-170-K6 $1,044.64 $1,253.57
Balmar XT-SF-170-K6 AlternatorsAlternator 1-2" Single Foot K6 Serpentine Pulley - 170A - 12VBalmar offers a wide range of alternator power upgrades designed specifically for marine industry applications. Balmar installs high reliability bearings, robust rectifier diodes and improved heat-sinking capabilities on all our alternators to ensure improved system reliability combined with increased charging power.Features: 1-2" Single Foot K6 Serpentine Pulley 170A 12V Specifications:Positions = NONE Lockable = NONE AFD = NONENormalized SKU: XTSF170K6UPC Code: 676205500852
Sold out -14% sale
Balmar Qualifies for Free Shipping Balmar Alternator 170a Kit 12v Vortec #XT-VT-170-K6-KIT
00
DAYS
00
HRS
00
MIN
00
SEC
Balmar Balmar Alternator 170a Kit 12v Vortec #XT-VT-170-K6-KIT $1,361.09 $1,578.86
Balmar XT-VT-170-K6-KIT AlternatorsAlternator Vortec K6 Serpentine Pulley Regulator & Temp Sensor - 170A - 12VBalmar offers a wide range of alternator power upgrades designed specifically for marine industry applications. Balmar installs high reliability bearings, robust rectifier diodes and improved heat-sinking capabilities on all our alternators to ensure improved system reliability combined with increased charging power.Features: Vortec K6 Serpentine Pulley Regulator & Temp Sensor 170A Kit 12V Specifications:Positions = NONE Lockable = NONE AFD = NONENormalized SKU: XTVT170K6KITUPC Code: 676205500883
Sold out -17% sale
Balmar Qualifies for Free Shipping Balmar Alternator 170a 12v 1-2in Single #XT-SF-170-J10
00
DAYS
00
HRS
00
MIN
00
SEC
Balmar Balmar Alternator 170a 12v 1-2in Single #XT-SF-170-J10 $1,044.64 $1,253.57
Balmar XT-SF-170-J10 AlternatorsAlternator 1-2" Single Foot J10 Serpentine Pulley - 170A - 12VBalmar offers a wide range of alternator power upgrades designed specifically for marine industry applications. Balmar installs high reliability bearings, robust rectifier diodes and improved heat-sinking capabilities on all our alternators to ensure improved system reliability combined with increased charging power.Features: 1-2" Single Foot J10 Serpentine Pulley 170A 12V Specifications:AFD = NONE Lockable = NONE Positions = NONENormalized SKU: XTSF170J10UPC Code: 676205500838
-14% sale
Balmar Qualifies for Free Shipping Balmar Alternator 170a Kit 12v 1-2in Single #XT-SF-170-DV-KIT
00
DAYS
00
HRS
00
MIN
00
SEC
Balmar Balmar Alternator 170a Kit 12v 1-2in Single #XT-SF-170-DV-KIT $1,361.09 $1,578.86
Balmar XT-SF-170-DV-KIT AlternatorsAlternator 1-2" Single Foot Dual V Pulley Regulator & Temp Sensor - 170A Kit - 12VBalmar offers a wide range of alternator power upgrades designed specifically for marine industry applications. Balmar installs high reliability bearings, robust rectifier diodes and improved heat-sinking capabilities on all our alternators to ensure improved system reliability combined with increased charging power.Features: 1-2" Single Foot Dual V Pulley Regulator & Temp Sensor 170A Kit 12V Specifications:AFD = NONE Lockable = NONE Positions = NONENormalized SKU: XTSF170DVKITUPC Code: 676205500821
Sold out
Balmar Qualifies for Free Shipping Balmar Alternator 170a Kit 12v 1-2in Single #XT-SF-170-J10-KIT
00
DAYS
00
HRS
00
MIN
00
SEC
Balmar Balmar Alternator 170a Kit 12v 1-2in Single #XT-SF-170-J10-KIT $1,220.00
Balmar XT-SF-170-J10-KIT AlternatorsAlternator 1-2" Single Foot J10 Serpentine Pulley Regulator & Temp Sensor - 170A Kit - 12VBalmar offers a wide range of alternator power upgrades designed specifically for marine industry applications. Balmar installs high reliability bearings, robust rectifier diodes and improved heat-sinking capabilities on all our alternators to ensure improved system reliability combined with increased charging power.Features: 1-2" Single Foot J10 Serpentine Pulley Regulator & Temp Sensor 170A Kit 12V This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns. Normalized SKU: XTSF170J10KITUPC Code: 676205500845
Sold out
Balmar Qualifies for Free Shipping Balmar Alternator 170a Kit 12v 3.15
00
DAYS
00
HRS
00
MIN
00
SEC
Balmar Balmar Alternator 170a Kit 12v 3.15" Dual Saddle #XT-DF-170-K6-KIT $1,220.00
Balmar XT-DF-170-K6-KIT AlternatorsAlternator 3.15" Dual Foot Saddle K6 Serpentine Pulley Regulator & Temp Sensor - 170A Kit - 12VBalmar offers a wide range of alternator power upgrades designed specifically for marine industry applications. Balmar installs high reliability bearings, robust rectifier diodes and improved heat-sinking capabilities on all our alternators to ensure improved system reliability combined with increased charging power.Features: 3.15" Dual Foot Saddle K6 Serpentine Pulley Regulator & Temp Sensor 170A Kit 12V Specifications:AFD = NONE Lockable = NONE Positions = NONENormalized SKU: XTDF170K6KITUPC Code: 676205500807
-17% sale
Balmar Alternator 170a 12v 3.15
00
DAYS
00
HRS
00
MIN
00
SEC
Balmar Balmar Alternator 170a 12v 3.15" Dual Saddle #XT-DF-170-K6 $1,044.64 $1,253.57
Balmar XT-DF-170-K6 AlternatorsAlternator 3.15" Dual Foot Saddle K6 Serpentine Pulley - 170A - 12VBalmar offers a wide range of alternator power upgrades designed specifically for marine industry applications. Balmar installs high reliability bearings, robust rectifier diodes and improved heat-sinking capabilities on all our alternators to ensure improved system reliability combined with increased charging power.Features: 3.15" Dual Foot Saddle K6 Serpentine Pulley 170A 12V Specifications:AFD = NONE Lockable = NONE Positions = NONENormalized SKU: XTDF170K6UPC Code: 676205500791
Sold out -17% sale
Balmar Qualifies for Free Shipping Balmar Alternator 170a 12v 1-2in Single #XT-SF-170-DV
00
DAYS
00
HRS
00
MIN
00
SEC
Balmar Balmar Alternator 170a 12v 1-2in Single #XT-SF-170-DV $1,004.46 $1,205.36
Balmar XT-SF-170-DV AlternatorsAlternator 1-2" Single Foot Dual V Pulley - 170A - 12VBalmar offers a wide range of alternator power upgrades designed specifically for marine industry applications. Balmar installs high reliability bearings, robust rectifier diodes and improved heat-sinking capabilities on all our alternators to ensure improved system reliability combined with increased charging power.Features: 1-2" Single Foot Dual V Pulley 170A 12V Specifications:AFD = NONE Lockable = NONE Positions = NONENormalized SKU: XTSF170DVUPC Code: 676205500814
-17% sale
Balmar Qualifies for Free Shipping Balmar Alternator 170a 12v 3.15
00
DAYS
00
HRS
00
MIN
00
SEC
Balmar Balmar Alternator 170a 12v 3.15" Dual Saddle #XT-DF-170-J10 $1,044.64 $1,253.57
Balmar XT-DF-170-J10 AlternatorsAlternator 3.15" Dual Foot Saddle J10 Serpentine Pulley - 170A - 12VBalmar offers a wide range of alternator power upgrades designed specifically for marine industry applications. Balmar installs high reliability bearings, robust rectifier diodes and improved heat-sinking capabilities on all our alternators to ensure improved system reliability combined with increased charging power.Features: 3.15" Dual Foot Saddle J10 Serpentine Pulley 170A 12V Specifications:AFD = NONE Lockable = NONE Positions = NONENormalized SKU: XTDF170J10UPC Code: 676205500777

Frequently Asked Questions

First Choice Marine is an online marine retailer carrying a diverse line of marine parts and accessories and related items from industry-respected and demanded manufacturers and suppliers. Through our diverse distributor network, we are able to access over 150,000 items, including our current site inventory, new products being added, and special order items. If you need it on your boat... we are your one-stop shop!

Yes, we offer FREE Shipping on most orders over $149 to US-48*.

Each product displays a shipping status message, just above the item price. Below is the meaning for each of these codes.

  • Qualifies for Free Shipping: This item qualifies for free shipping when the order is $149+
  • Qualifies for Free Ground Shipping: This item qualifies for free ground shipping when the order is $149+.
  • Oversized - Not Qualified for Free Shipping: This item is too large/heavy to qualify for free shipping
  • Hazardous Item - Not Qualified for Free Shipping: This item is hazardous and does not qualify for free shipping
  • Truck Freight - Not Qualified for Free Shipping: This item has to be shipped via truck freight. Please contact us for a quote
  • In-Store Pickup Only: This item can only be picked up in our Grain Valley, MO retail store

Below the price of the item, on the product page, there is a message indicating the availability of the product.

The quantity on hand is updated as inventory events happen and matches what we have available. If you have urgent needs and we are close to what you need, contact us, and we can confirm stock.

We offer a hassle-free return policy. If you're not completely satisfied with your purchase, you can return it within 30 days for a full refund or exchange.

If you need to return an item, please follow the guidelines here so we can process a prompt refund and assist you in finding the correct item.

Free Shipping

On most orders $149+ to the continental 48 US states.

Secure Shopping

Fast, secure checkout with a variety of payment methods.

Shop with confidence

25+ years serving the marine industry.

Support center

Need help? Contact us via live chat, phone, or email.