top of page

12V 40A Automotive Relay – SPDT 4/5 Pin Car Alarm & Accessory Relay

Price

$4.99

A reliable workhorse for your 12V electrical projects. This 40-amp SPDT (Single Pole Double Throw) automotive relay handles switching loads for car alarms, auxiliary lighting, electric fans, horns, and other 12V accessories.

1NO (Normally Open) + 1NC (Normally Closed) configuration makes it versatile for both energized and de-energized switching applications. Fits standard 4-pin and 5-pin relay sockets.

Specs: DC 12V, 40A rated current, 1NO/1NC SPDT configuration. Compatible with standard 4-pin and 5-pin relay harnesses.

Color

Quantity

Shipping & Returns

Tracked & insured. Every order ships with full tracking — we email your tracking number the moment it dispatches.

Dispatch: Orders are quality-checked and handed to the carrier within 3–5 business days.

Delivery: US orders typically arrive 7–15 days after dispatch. Why the wait? Our parts are designed and quality-audited in the USA and produced through an exclusive supply chain — not pulled from stock vendor shelves.


14-Day Returns: Not right for your build? Return unused items within 14 days of delivery for a refund. Arrived damaged or wrong? Contact us and we'll replace it or refund you — at no cost to you.

New

8c3272c12fe546269c6aa08bc859a28a_edited.png
Sf33f6f8e1fe9460e95817d9a8891b083d_edited.png
image_2026-01-03_181339089-removebg-preview.png
image_2026-01-03_191319636-removebg-preview.png

Happy Humbl Customers

What they’re saying

image_2026-01-03_195200424.png

"The socket set is top-tier quality. Heavy-duty steel that handles real torque without slipping. Better than the big box store brands honestly."

 Jason M., Ohio

image_2026-01-03_195254831.png
Ordered brake pads and rotors for my truck. Everything fit perfectly right out of the box. Saved me cash and shipping was surprisingly fast."
 Isaac L., Texas
image_2026-01-03_195414958.png
"Incredible service. Needed a specific sensor fast and it arrived a day early. The site is simple to use. Finally found a reliable parts source!"
Mike T., Florida
bottom of page