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Formiden

FLS821 Relay 12V 40A (Pack of 2) - Universal SPST 4-Pin Heavy Duty Automotive Relay

✅ In stock ⭐ Lowest price we've tracked
C
Grade
🙂 Fair Price
58.49/100
Current Price
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply to the purchase of this product.
$8.99
Listed $8.99
Analysis Confidence 100%
⚠️ Price may have changed. Last updated 24+ hours ago — confirm on Amazon.
Check Deal at Amazon
Price verified Oct 4, 2026 4:15 PM · Prices & availability subject to change

Is This a Good Price on Amazon?

🙂 Fair Price
  • 🙂Verdict: Fair Price. Small discount vs history. Consider waiting for a better drop.
  • 💰At 12% off its standard going rate, this offer delivers clear value for the money.
  • 📉Our analysis places this at the most competitive price point we have ever tracked for this product — an exceptional moment to buy.
  • ➡️Pricing has held fairly steady, with no strong push in either direction.

How We Scored This Deal

Price Competitiveness 13.19/28
Recent Value 4.12/22
Market Standing 17.17/20
Deal Strength 20/20
Momentum 4/10

📝 Product Overview

🏪 Sold by Pecafeitas Offical
📦 Fulfillment Fulfilled by Amazon
🚚 Shipping Free Shipping

Product Details

✓Universal Design: Compatible with a wide range of vehicles and applications, making it a versatile choice for various automotive projects.
✓Powerful Performance: With a robust 12V DC voltage and 40A current rating, this relay provides ample power for handling demanding electrical loads.
✓Durable Construction: Built with high-quality materials and engineering for long-lasting reliability, capable of withstanding harsh automotive conditions.
✓Easy Installation: Simple pin configuration and a straightforward design ensure quick and easy installation in most automotive systems.
✓Efficient Switching: Offers efficient operation for smooth and reliable control of electrical circuits, ensuring that your vehicle’s systems function optimally.

⚙️ Specifications

Connector Type
Screw Terminals Or Quick Connect
Contact Material
Silver Tungsten
Contact Type
Normally Open
Current Rating
40 A
Mounting Type
Screw Mount
Operation Mode
Automatic
Wattage
480 watts
Coil Voltage
12 volts_of_direct_current
Contact Current Rating
40 A
Minimum Switching Voltage
12 volts_of_direct_current
Brand Name
Formiden
C
$8.99
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