Sold out -17% sale
Sierra Not Qualified for Free Shipping Sierra Alternator #18-6927
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Sierra Sierra Alternator #18-6927 $36.70 $43.81
Sierra 18-6927 AlternatorsSierra Alternator #18-6927Charging System: AlternatorNormalized SKU: 186927UPC Code: 808282312596
Sold out -17% sale
Sierra Not Qualified for Free Shipping Sierra Alternator #18-6849
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Sierra Sierra Alternator #18-6849 $35.29 $42.12
Sierra 18-6849 AlternatorsSierra Alternator #18-6849Charging System: AlternatorNormalized SKU: 186849UPC Code: 808282310677
Sold out -17% sale
Sierra Not Qualified for Free Shipping Sierra Alternator #18-6841
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Sierra Sierra Alternator #18-6841 $24.06 $28.71
Sierra 18-6841 AlternatorsSierra Alternator #18-6841Charging System: AlternatorNormalized SKU: 186841UPC Code: 808282310721
Sold out -17% sale
Sierra Alternator #18-59700
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Sierra Sierra Alternator #18-59700 $15.41 $18.39
Sierra 18-59700 AlternatorsSierra Alternator #18-59700Charging System: AlternatorNormalized SKU: 1859700UPC Code: 808282310813
Sold out -17% sale
Sierra Not Qualified for Free Shipping Sierra Alternator #18-6925
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Sierra Sierra Alternator #18-6925 $24.80 $29.60
Sierra 18-6925 AlternatorsSierra Alternator #18-6925Charging System: AlternatorNormalized SKU: 186925UPC Code: 808282310769
Sold out -20% sale
Sierra Not Qualified for Free Shipping Sierra Alternator #18-6844
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Sierra Sierra Alternator #18-6844 $359.62 $448.85
Sierra 18-6844 AlternatorsMERCRUISER ALTERNATOR•Replaces: Mercruiser 834832, T2, 857006A3, Denso 101211-3460 Charging System: AlternatorNormalized SKU: 186844UPC Code: 808282311605
-20% sale
Sierra Not Qualified for Free Shipping Sierra Alternator #18-6847
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Sierra Sierra Alternator #18-6847 $387.08 $483.13
Sierra 18-6847 AlternatorsSierra Alternator #18-6847Charging System: AlternatorNormalized SKU: 186847UPC Code: 808282311575
Sold out -17% sale
Sierra Not Qualified for Free Shipping Sierra Alternator #18-5982
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Sierra Sierra Alternator #18-5982 $43.47 $52.16
Sierra 18-5982 AlternatorsSierra Alternator #18-5982Charging System: AlternatorNormalized SKU: 185982UPC Code: 808282310806
Sold out -20% sale
Sierra Not Qualified for Free Shipping Sierra Alternator #18-6928
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Sierra Sierra Alternator #18-6928 $134.76 $167.29
Sierra 18-6928 AlternatorsSierra Alternator #18-6928Charging System: AlternatorNormalized SKU: 186928UPC Code: 808282311681
-18% sale
Sierra Not Qualified for Free Shipping Sierra Alternator #18-6960
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Sierra Sierra Alternator #18-6960 $729.83 $883.78
Sierra 18-6960 AlternatorsMERCRUISER ALTERNATOR•Replaces: Mercruiser 821663, -1, A1, Denso 101211-3020, 3021 Charging System: AlternatorNormalized SKU: 186960UPC Code: 808282311209
Sold out -17% sale
Sierra Not Qualified for Free Shipping Sierra Alternator #18-6842
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Sierra Sierra Alternator #18-6842 $46.59 $55.91
Sierra 18-6842 AlternatorsSierra Alternator #18-6842Charging System: AlternatorNormalized SKU: 186842UPC Code: 808282311315
Sold out -17% sale
Sierra Not Qualified for Free Shipping Sierra Alternator #18-6952
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Sierra Sierra Alternator #18-6952 $60.71 $72.85
Sierra 18-6952 AlternatorsSierra Alternator #18-6952Charging System: AlternatorNormalized SKU: 186952UPC Code: 808282311773
Sold out -22% sale
Sierra Not Qualified for Free Shipping Sierra Alternator #18-6929
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Sierra Sierra Alternator #18-6929 $225.06 $285.85
Sierra 18-6929 AlternatorsSierra Alternator #18-6929Charging System: AlternatorNormalized SKU: 186929UPC Code: 808282310820
Sold out -17% sale
Sierra Not Qualified for Free Shipping Sierra Alternator #18-6926
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Sierra Sierra Alternator #18-6926 $54.00 $64.80
Sierra 18-6926 AlternatorsSierra Alternator #18-6926Charging System: AlternatorNormalized SKU: 186926UPC Code: 808282311674
Sold out -22% sale
Sierra Not Qualified for Free Shipping Sierra Alternator #18-6848
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Sierra Sierra Alternator #18-6848 $334.42 $424.73
Sierra 18-6848 AlternatorsVOLVO PENTA ALTERNATOR•Replaces: Volvo 3862612, 2656299, Valeo A0002655299   •Fits: 2000 and on Volvo Penta models w/4.3, 5.0, & 5.7 GM engines Charging System: AlternatorNormalized SKU: 186848UPC Code: 808282311339
Sold out -22% sale
Sierra Not Qualified for Free Shipping Sierra Alternator #18-6845
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Sierra Sierra Alternator #18-6845 $229.13 $291.02
Sierra 18-6845 AlternatorsSierra Alternator #18-6845Charging System: AlternatorNormalized SKU: 186845UPC Code: 808282311551
Sold out -20% sale
Sierra Not Qualified for Free Shipping Sierra Alternator #18-6955
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Sierra Sierra Alternator #18-6955 $91.39 $113.45
Sierra 18-6955 AlternatorsSierra Alternator #18-6955Charging System: AlternatorNormalized SKU: 186955UPC Code: 808282310974
Sold out -22% sale
Sierra Not Qualified for Free Shipping Sierra Alternator #18-6843
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Sierra Sierra Alternator #18-6843 $169.24 $214.94
Sierra 18-6843 AlternatorsSierra Alternator #18-6843Charging System: AlternatorNormalized SKU: 186843UPC Code: 808282310905
Sold out -20% sale
Sierra Not Qualified for Free Shipping Sierra Alternator #18-6846
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Sierra Sierra Alternator #18-6846 $79.74 $98.98
Sierra 18-6846 AlternatorsVOLVO PENTA ALTERNATOR•Replaces: 1502272, 3803270-2, 5001677, 845940, 72021, 872022, 872757, 873635, 873757, 873757-9, 873771 Charging System: AlternatorNormalized SKU: 186846UPC Code: 808282310684
Sold out -22% sale
Sierra Not Qualified for Free Shipping Sierra Alternator #18-6840
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Sierra Sierra Alternator #18-6840 $285.81 $363.00
Sierra 18-6840 AlternatorsMERCURY/MARINER ALTERNATOR•Replaces: 50-897755T, 897755T   •Fits 75-115HP EFI (4-Stroke) Charging System: AlternatorNormalized SKU: 186840UPC Code: 808282310943

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.

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25+ years serving the marine industry.

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