Feature:1. Starter motor relay replacement parts, specially designed for 170F/173F/178F/186F.2. It is a component of the startup system, with stable and reliable performance.3. Selected highquality iron materials, with good durability and abrasion resistance.4. Practical generator accessories, fine workmanship, and improve performance.5. Easy to install and disassemble, it is an excellent substitute for broken parts.Specification:Item Type: Motor RelayMaterial: IronWeight: Approx. 574g / 20.2ozAssembly Length: Approx. 107mm / 4.2inApplicable Model: Fit for 170F/173F/178F/186FApplicable Object: GeneratorUses: Generators for agriculture, fishery, animal husbandry, aquaculture, forestry.Package List:1 x Motor Relay3 x AccessoryNote:1.Please allow 0‑1 inch error due to manual measurement. Thanks for your understanding.2.Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.