SKU: 3709545132

DAIERTEK 12V SPDT Relay Switch with Diode & 12 AWG Harness Socket - 30A/40A Heavy Duty, Waterproof, 8 Pcs, Model JD191

Sale price$34.73 Regular price$38.59
Save 10%

Pay in installments of $9.65 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 21 - Aug 26

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

DAIERTEK 12V SPDT Relay Switch with Diode & 12 AWG Harness Socket - 30A/40A Heavy Duty, Waterproof, 8 Pcs, Model JD191The DAIERTEK 30A 40A Relay is a heavy duty, 5 pin relay switch designed for automotive and marine applications. This versatile relay allows you to control high power devices using low rated switches, making it an essential component for vehicles, boats, and other machinery. This 12V relay features a robust design that ensures reliable performance in demanding environments. The built in diode protects against voltage spikes, while the waterproof

The DAIERTEK 30A/40A Relay is a heavy-duty, 5-pin relay switch designed for automotive and marine applications. This versatile relay allows you to control high-power devices using low-rated switches, making it an essential component for vehicles, boats, and other machinery.

This 12V relay features a robust design that ensures reliable performance in demanding environments. The built-in diode protects against voltage spikes, while the waterproof harness enhances durability. With a combination of 12AWG and 16AWG wiring, this relay is engineered for efficiency and safety, ensuring seamless operation in various applications.

Key Features:
  • 30A/40A Relay: Rated at 12V with a heavy-duty SPDT design, this relay can handle up to 40A for Normally Open (NO) and 30A for Normally Closed (NC) configurations.
  • Built-in Diode: Protects electrical components by dissipating induced voltage generated during switching, enhancing the longevity of your devices.
  • 12AWG Harness: Equipped with high-quality 12AWG wires (red, blue, yellow) for power terminals and 16AWG wires (white, black) for coil terminals, ensuring efficient and secure connections.
  • Waterproof Design: Features a seal ring within the harness socket, improving waterproof performance and making it suitable for use in moist environments.
  • Wide Application: Ideal for automotive, truck, and marine applications, this relay serves as a bridge between switches and devices, allowing for effective control of high-rating devices with smaller switches.
  • Easy Installation: Designed for straightforward setup, making it accessible for both professionals and DIY enthusiasts.
  • Durable Construction: Built to withstand harsh conditions, ensuring reliability and performance over time.

The DAIERTEK 30A/40A Relay is perfect for automotive enthusiasts, marine operators, and anyone needing a reliable relay solution for high-power applications. Its robust design and protective features make it a smart choice for safe and effective device management in challenging environments.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 3709545132

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.2 ★★★★★
Based on 16 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
K
Verified Purchase
KK
Massapequa, US
★★★★★ 5
Economical, easy to install, and does the job!
Style: BE-182 1-Pack
First, depending on your car model, replacing your cabin air filter is VERY easy. With that out of the way, the shop wanted to charge almost 65 dollars to replace my cabin air filter. Decided to just buy one and do it myself. The only downside of waiting is that the air inside the car is not as fresh/clean when you're running your air. Anyways, you can usually get these kinds of filters between 20-45 dollars from auto part shops depending on the brand and features. I've used this brand and filter for the past 3 replacements on my car and they last just as long and filter just as well from my experience. No issues installing, and does in fact do a good job of filtering outside odors. Highly recommended for the price!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 16, 2026
R
Verified Purchase
Riggs
San Leandro, US
★★★★★ 5
Fits my 2026 civic sport perfect!
Size: AF151
No issues, fitment is perfect. Great quality for an excellent price. Dealer wanted like $24 for a basic one. Nah I'm good I'll just go on Amazon and get it for $8. Took 30 seconds from start to finish can't get any easier.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 25, 2026
A
Verified Purchase
Ant Farmer 1
Omaha, US
★★★★★ 5
Fits well and installs easily.
Size: AF997
This filter looked about the same as the OEM filter. It installed in about a minute. The quality appeared to be fine. It was protected in a cardboard box. It fit my 2014 Subaru Outback perfectly. I just installed it an hour ago so I don’t have any long term observations about longevity or effectiveness. I can’t see any reason why it would not work as well as the original, it seemed identical.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 29, 2026
N
Verified Purchase
Nicholas K
Massapequa, US
★★★★★ 5
Great filter
Size: AF259
This fit my Mazda CX-5 perfectly. I'm happy with the seal and quality. Great price. I will certainly reorder for my next replacement.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 19, 2026
A
Verified Purchase
Amazon Customer
Louisville, US
★★★★★ 5
Great fit and quality
Size: AF113
Not a complicated product, but after going to 2 different auto parts stores and this not being in stock, Amazon to the rescue. Arrived the next day and the quality is definitely on par with “store brand” ones from retailers. Definitely cheaper as well.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 23, 2026

recommand products