--- product_id: 342649339 title: "New Hot Rod Starter Relay Solenoid 12V Heavy Duty SW3 Compatible with 1956-up and B-6A-11450A C6AF C7AF C3912 C9AF D2AF11450AA 50-430" brand: "mrelc" price: "€ 32.27" currency: EUR in_stock: true url: https://www.desertcart.hr/products/342649339-new-hot-rod-starter-relay-solenoid-12v-heavy-duty-sw3 store_origin: HR region: Croatia --- # 12V Power Easy Install Durable Material New Hot Rod Starter Relay Solenoid 12V Heavy Duty SW3 Compatible with 1956-up and B-6A-11450A C6AF C7AF C3912 C9AF D2AF11450AA 50-430 **Brand:** mrelc **Price:** € 32.27 **Availability:** ✅ In Stock ## Summary > ⚙️ Rev Up Your Ride with Reliability! ## Quick Answers - **What is this?** New Hot Rod Starter Relay Solenoid 12V Heavy Duty SW3 Compatible with 1956-up and B-6A-11450A C6AF C7AF C3912 C9AF D2AF11450AA 50-430 by mrelc - **How much does it cost?** € 32.27 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/342649339-new-hot-rod-starter-relay-solenoid-12v-heavy-duty-sw3) ## Best For - mrelc enthusiasts ## Why This Product - Trusted mrelc brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built to Last:** Crafted from premium zinc alloy and iron, ensuring durability for the long haul. - • **Complete Package:** Includes everything you need: 1 starter relay and two sets of screws for a smooth setup. - • **Unleash the Power:** Experience a robust 12V performance that ignites your engine with confidence. - • **Versatile Compatibility:** Seamlessly fits a range of models from 1956 and up, making it a must-have for classic car enthusiasts. - • **Hassle-Free Installation:** Flat base design allows for quick and easy mounting, saving you time and effort. ## Overview The New Hot Rod Starter Relay Solenoid is a heavy-duty 12V component designed for compatibility with various classic car models from 1956 onwards. Made from durable zinc alloy and iron, it ensures long-lasting performance. The flat base design simplifies installation, making it an essential upgrade for any automotive enthusiast. ## Description New Hot Rod Starter Relay Solenoid 12V Heavy Duty SW3 Compatible with 1956-up and B-6A-11450A C6AF C7AF C3912 C9AF D2AF11450AA 50-430 ## Features - Solenoid - Voltage: 12V - Compatible with B-6A-11450A C6AF C7AF C9AF SS588 F496 66-200 SNLS-135 SS581 SW3 SW3 - Material: Zink alloy body of switch & 2 pcs of iron key & cooper connection terminals & Iron screw . - Eases installation:The flat base eases mounting and a remote under hood starter switch or timing light hook-up can be easily adapted - Package Included:1x Starter Relay，Two sets of screws ## Product Details - **Brand:** MRELC - **Material:** Zink alloy, Iron, Copper - **Item Weight:** 0.29 Kilograms - **Amperage:** 11450 Amps - **Voltage:** 12 Volts ## Images ![New Hot Rod Starter Relay Solenoid 12V Heavy Duty SW3 Compatible with 1956-up and B-6A-11450A C6AF C7AF C3912 C9AF D2AF11450AA 50-430 - Image 1](https://m.media-amazon.com/images/I/71NMtUJrnwS.jpg) ![New Hot Rod Starter Relay Solenoid 12V Heavy Duty SW3 Compatible with 1956-up and B-6A-11450A C6AF C7AF C3912 C9AF D2AF11450AA 50-430 - Image 2](https://m.media-amazon.com/images/I/71M3N+sz+9S.jpg) ![New Hot Rod Starter Relay Solenoid 12V Heavy Duty SW3 Compatible with 1956-up and B-6A-11450A C6AF C7AF C3912 C9AF D2AF11450AA 50-430 - Image 3](https://m.media-amazon.com/images/I/71VvkOe2zSS.jpg) ![New Hot Rod Starter Relay Solenoid 12V Heavy Duty SW3 Compatible with 1956-up and B-6A-11450A C6AF C7AF C3912 C9AF D2AF11450AA 50-430 - Image 4](https://m.media-amazon.com/images/I/71RNzYXxiUS.jpg) ![New Hot Rod Starter Relay Solenoid 12V Heavy Duty SW3 Compatible with 1956-up and B-6A-11450A C6AF C7AF C3912 C9AF D2AF11450AA 50-430 - Image 5](https://m.media-amazon.com/images/I/71EMuBUK+LS.jpg) ## Questions & Answers **Q: does this have the push button** A: No, this does not have a separate push on/off button. The smaller gauge 12V trigger wire hot lead with an inline on/off switch (or button) is attached to one of the smaller silver terminals, a ground wire is attached to the other silver terminal, the heavy gauge 12V hot lead is attached to one of the larger copper terminals, and the heavy gauge wire leading to the starter is attached to the other heavy copper terminal. **Q: stud size connections?** A: Standard size on any starter solenoid should be the same size of the one you're taking off **Q: Will this replace a 307-2570?** A: I don’t see why it wouldn’t. The mounting bracket and terminals look the same. I installed it on a 1983 Ford F-150. Works great! **Q: Does this replace the solenoid for the Lincoln portable welder "Weldanpower"? this welder uses a wired ground, not a grounded base. thank you!** A: I couldn't say for your case ?? There is a ground post on this unit though, if that helps. I used this for aviation purposes ## Frequently Bought Together - MRELC New Hot Rod Starter Relay Solenoid 12V Heavy Duty SW3 Compatible with 1956-up and B-6A-11450A C6AF C7AF C3912 C9AF D2AF11450AA 50-430 - MGI SpeedWare 4-Position Universal Ignition Key Switch for 12V Car, Truck, Tractor, Trailer, Forklift - Acc/Off/IGN/(Start) - Ignition Switch with Key, 4 Position Universal Key Ignition Switch 12v for Car, Truck, Tractor, Trailer, Forklift, and More, Acc/Off/IGN/Start --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.hr/products/342649339-new-hot-rod-starter-relay-solenoid-12v-heavy-duty-sw3](https://www.desertcart.hr/products/342649339-new-hot-rod-starter-relay-solenoid-12v-heavy-duty-sw3) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-07-05*