U.S. Customers: Orders shipped from Canada may be subject to U.S. import duties, taxes, and/or tariffs as assessed by U.S. Customs and your carrier. These charges are not included in our product prices or shipping rates. You are responsible for any duties/tariffs/fees due on delivery or prior to delivery.
Packed and shipped within Canada!

Original & OEM Quality Parts

Sierra
18-6851

Battery Isolator, 1-Alternator 2-Batteries 130A - 18-6851 - 47-6851F1

LSN 47-6851 MPN 18-6851 UPC 808282311322 MFR Sierra
Express
ON, Warehouse

"Express" items are automated and typically shipped out next available business day and delivered within 4 day.
In Stock
$308.29
Canadian Dollars
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Battery isolators allow you to charge multiple batteries from a single source.* Will not work with Delco "CS" style alternators.

Part #:47-6851
Manufacturer:SIERRA
Manufacturer Part #:18-6851
UPC:808282311322
Order In Multiples Of:1
Amps130
Application1 alternator / 2 batteries*

Variations
47-6852Battery Isolator, 1-Alternator 2-Batteries 165A
47-6853Battery Isolator, 1-Alternator 2-Batteries 200A
47-6854Battery Isolator, 1-Alternator 3-Batteries 160A
47-6855Battery Isolator, 1-Alternator 2-Batteries 75A
47-6856Battery Isolator, 1-Alternator 2-Batteries 270A
Northern Marine Canada
Our products are shipped from Canada!
Parts Warehouse:
Toronto, Ontario, Canada
Head Office:
Kingston, Ontario

About Us

Northern Marine is a Canadian supplier of OEM and premium aftermarket marine and RV parts and accessories. We focus on quality, accurate listings, and dependable fulfillment so you can maintain, repair, and outfit your boat or RV with confidence.

Our goal is simple: get you the right parts, shipped fast, with straightforward service you can count on.