---
product_id: 18407896
title: "Genuine Honda 39400-S84-003 Main Relay Assembly"
brand: "honda"
price: "KD 25.69"
currency: KWD
in_stock: true
url: https://www.desertcart.com.kw/products/18407896-genuine-honda-39400-s84-003-main-relay-assembly
store_origin: KW
region: Kuwait
---

# 12V Automatic Compact Size Screw Connector Genuine Honda 39400-S84-003 Main Relay Assembly

**Brand:** honda
**Price:** KD 25.69
**Availability:** ✅ In Stock

## Summary

> 🔧 Elevate Your Ride with Genuine Honda Reliability!

## Quick Answers

- **What is this?** Genuine Honda 39400-S84-003 Main Relay Assembly by honda
- **How much does it cost?** KD 25.69 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.kw](https://www.desertcart.com.kw/products/18407896-genuine-honda-39400-s84-003-main-relay-assembly)

## Best For

- honda enthusiasts

## Why This Product

- Trusted honda brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Compact Design:** Perfect fit for your vehicle with dimensions of 4.5 x 2.6 x 2 inches.
- • **Reliable Voltage:** Operates flawlessly at 12 volts DC for dependable functionality.
- • **Efficient Operation:** Experience seamless performance with automatic mode.
- • **Genuine OEM Quality:** Trust in Honda's legacy with this authentic part.
- • **Lightweight Convenience:** Weighing only 0.089 kg, it's easy to handle and install.

## Overview

The Genuine Honda 39400-S84-003 Main Relay Assembly is an essential OEM component designed for optimal performance in your vehicle. Weighing just 0.089 kg and featuring a compact design, this relay operates at 12 volts DC, ensuring reliable and efficient functionality. Trust in Honda's quality with this automatic, normally open contact relay, perfect for maintaining your vehicle's electrical system.

## Description

Genuine Honda 39400-S84-003 Main Relay Assembly

## Features

- Genuine OEM part
- Part number: 39400-S84-003
- Package Weight: 0.089 kilograms
- Oem equivalent part number: 39400-S84-003

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Connector Type | Screw |
| Contact Type | Normally Open |
| Brand | Honda |
| Operation Mode | Automatic |
| Coil Voltage | 12 Volts (DC) |
| Minimum Switching Voltage | 12 Volts (DC) |
| Specification Met | OEM |
| Manufacturer | Honda |
| Model | Genuine Honda RELAY ASSY-, MAIN |
| Item Weight | 2 pounds |
| Product Dimensions | 4.5 x 2.6 x 2 inches |
| Item model number | 39400-S84-003 |
| Is Discontinued By Manufacturer | No |
| Manufacturer Part Number | 39400-S84-003 |
| OEM Part Number | 39400-S84-003 |

## Product Details

- **Connector Type:** Screw
- **Contact Type:** Normally Open
- **Brand:** Honda
- **Operation Mode:** Automatic
- **Coil Voltage:** 12 Volts (DC)

## Images

![Genuine Honda 39400-S84-003 Main Relay Assembly - Image 1](https://m.media-amazon.com/images/I/71Idx4DBA0L.jpg)

## Questions & Answers

**Q: Does this replace the rz-0158?**
A: Part I received looked exactly like pics, and identical to the part I replaced.Second pic in listing shows "RZ-159" ... which I do not think is exactly the same as an RZ-158 ... may or may not work?I would feel confident ordering this part if you have one of these:Fits 1998 to 2001 Prelude, 1998 to 2002 Accord, 1998 to 2004 Odyssey, and 2003 to 2004 Pilot, otherwise, not sure.The "Wells" version of this part had no writing on the outside, so I returned it and got this one instead.Parts store should have online vehicle compatibility check also to double check.  I found Amazon had best price on Wells part and this (OEM) part.Sorry not more helpful.

**Q: i have a 2004 honda civic and it wont start some one tol me it was the main relay is this the part i need?**
A: The Fuel Pump Main Relay was my problem, here is/was the symptoms. In hot summer weather when the window are up the cracks in the solder of the FPMR would separate and cause an open circuit and not allow the car to fire, engine would turn over til the battery went dead, would not fire though. Now all I had to do is open the windows and doors and allow the car to cool down enough for the solder weld in the FPMR to cool down and close up and touch and the circuit would be complete and the car would start. Replacing the Fuel Pump Main Relay fixed my problem. Please go to YouTube and type in 2004 Honda Civic won't start in hot weather and if this is your problem you will find there were/are millions just like you. Mine is a 2001 Honda Accord and there millions with my problem.   I found untold thousands of people with Honda's from the mid/late 1990's to mid 2000's with the same problem. Do a Google search and YouTube search of your problem and you may very will find this is your problem. I hope this helped in any way, this part I purchased was from Amazon was the answer to my problem and at a very reasonable price. Good luck.

**Q: I have a 1999 honda accord, the car cranks but wont stay on. Could this be my solution? If not what could it be?**
A: my mechanic (whom happens to work for a honda dealership) told me the relay will start to "stick" especially in warmer weather because i was having the same problem.  my 02 honda coupe V6 would occasionally shut off on me while driving and or wouldn't crank over to start.  i recently purchased the part on amazon and installed it myself on 5/5/17 after a few instructions and youtube videos recommended by my mechanic.  ever since i replaced it with this genuine honda part (which i recommend) it hasn't shut off on me and has started every time.  if you are interested in the youtube video i watched which was very helpful, go to youtube.com and search " '91 honda accord main relay replacement "  postet by amber waite.

**Q: when installing new relay do you have to disconecct battery?**
A: No, no current to relay if key is in off position

## Frequently Bought Together

- Genuine Honda 39400-S84-003 Main Relay Assembly
- Beck/Arnley 201-1805 Ignition Starter Switch

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*Product available on Desertcart Kuwait*
*Store origin: KW*
*Last updated: 2026-01-26*