Description
Product Overview
The Sonzrod 4‑Pin Relay is a high‑load, 30 Amp automotive relay designed for air‑conditioning compressors and radiator fans in vehicles from 2010 to 2020. Constructed with silver‑alloy contacts, it offers low resistance (<50 mΩ) and excellent conductivity. The plug‑in mounting type matches standard SPST relay sockets, and the housing meets OEM specifications with an IP67 rating, protecting against water, dust, and extreme temperatures ranging from –40 °C to 125 °C. Two SKUs are available: one with a wiring harness socket and one without, allowing flexible installation.
Usage
This relay is ideal for automotive technicians, fleet maintenance teams, and DIY car owners who need a dependable replacement for failing A/C compressor relays. It performs reliably in hot climates, high‑performance cooling systems, and under heavy electrical loads typical of modern vehicles. 
Why Choose Us
Sonzrod combines rigorous quality control with precision engineering to deliver a relay that exceeds OEM standards. Each unit undergoes testing for current rating, contact resistance, and environmental sealing. The optional wiring harness socket reduces wiring errors and saves installation time, while the IP67 housing ensures longevity even in harsh under‑hood conditions. Our product is backed by a warranty and supported by a responsive customer service team.
Key Features
- Universal 4‑Pin compatibility for 2010‑2020 vehicles
- 30 A current rating handles 12 VDC surges for A/C compressors
- Silver‑alloy contacts provide <50 mΩ resistance for efficient power flow
- IP67 water and dust proof housing protects against corrosion
- Plug‑and‑play design with optional wiring harness socket for quick installation
FAQ
Will this relay fit my 2015 sedan?
Yes, the relay is designed for standard 4‑pin SPST sockets found in most 2010‑2020 sedans. Verify the socket size in your vehicle’s service manual or by checking the VIN.
Do I need the wiring harness socket?
The socket version simplifies wiring connections and reduces the chance of mis‑wiring. Choose it if you prefer a cleaner install; the non‑socket version works equally well with existing wiring.
Is the relay waterproof?
With an IP67 rating, the relay is protected against immersion in water up to 1 meter for 30 minutes and is dust‑tight, making it suitable for harsh under‑hood environments.
Can this relay be used for other high‑load accessories?
While optimized for A/C compressors and radiator fans, the 30 A rating makes it suitable for other 12 V high‑current accessories such as electric water pumps or auxiliary lights.
What warranty does Sonzrod offer?
Sonzrod provides a one‑year limited warranty covering defects in materials and workmanship, ensuring peace of mind for your purchase.




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