Is this a genuine motorcraft part? Some of the reviews seem to say otherwise.

it is a motorcraft part. I installed it in my Mercury and it is working fine

What activates the relay... positive to the small post or negative?

The small post is the 12 volts (positive) from the switch inside the vehicle when it is in the start position. There is no negative to this solenoid other than the case itself. The negative is through the chassis ground. If you have a negative wire it would go to the screws that hold the unit to the firewall.

Got one a couple months ago and delivered in authentic looking Motorcraft box, on box bottom says "Assembled in Mexico" - works like a champ.

Sw1951c New Solenoid | Desertcart Cook Islands

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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NZ$184

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Sold byAmazon Cook IslandsDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚡ Power up your ride with Motorcraft precision—start strong, stay unstoppable!

BUILT TO LAST - Crafted from abrasion and corrosion-resistant materials to keep your engine firing strong for years.
TRUSTED BY PROS - Motorcraft quality ensures your vehicle runs like new, backed by thousands of 5-star reviews.
PRECISION OEM FIT - Seamlessly replaces your old solenoid with exact screw-hole alignment for hassle-free installation.
CHROME EXTERIOR FINISH - Sleek, corrosion-resistant chrome adds a subtle touch of durability and style under the hood.
RELIABLE PERFORMANCE BOOST - Maximizes starter efficiency with a robust 12V coil and 144W power rating—no more slow starts.

The Motorcraft SW1951C Starter Solenoid is a high-quality, OEM replacement part designed for direct fit and lasting durability. Featuring a 12V DC coil, copper contacts, and corrosion-resistant chrome exterior, it ensures reliable starter performance and easy installation. Trusted by professionals and backed by excellent customer reviews, this solenoid is engineered to keep your vehicle running smoothly for years.

Specifications

ASIN	B000C5FTKY
Best Sellers Rank	#20,320 in Automotive ( See Top 100 in Automotive ) #5 in Automotive Replacement Starter Solenoids
Brand Name	Motorcraft
Color	Black
Customer Reviews	4.7 out of 5 stars 1,027 Reviews
Global Trade Identification Number	00031508265110
Included Components	SW-1951-C
Item Dimensions	3.09 x 2.77 x 3.68 inches
Item Type Name	Relay Assy - Starter Motor
Manufacturer	Motorcraft
Model	SW-1951-C
Part Number	SW-1951-C
UPC	031508265110
Unit Count	1.0 Count
Warranty Description	All Motorcraft and Ford Parts are covered by Ford's 24-month/Unlimited Mileage Limited Warranty
Wattage	144 watts

Reviews

K**S

15.01.2026

A**S

17.04.2026

B**E

26.03.2026

A**L

9.04.2026

S**R

21.07.2025

C**K

6.12.2023

M**.

9.03.2026

A**N

21.11.2025

E**S

4.06.2024

M**G

4.08.2023

K**L

21.05.2025

R**S

20.12.2024

A**W

11.07.2025

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Buy anything from 5,000+ international stores. One checkout price. No surprise fees. Join 2M+ shoppers on Desertcart.

NZ$184

Duties & taxes included

In stock

Sold byAmazon Cook IslandsDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Cook Islands.

Secure transaction

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Perfect platform for hard-to-find items. Delivery was prompt.

1 month ago

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SW1951C New Solenoid

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Description

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Common Questions