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Honda

Genuine Honda 39400-S84-003 Main Relay Assembly

  • Based on 157 reviews
Condition: New
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Availability: Only 1 left in stock, order soon!
Fulfilled by Amazon
Arrives Wednesday, Sep 10
Order within 6 hours and 58 minutes
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Features

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

Description

GET ON THE WATER

Connector Type: Screw


Contact Type: Normally Open


Brand: Honda


Operation Mode: Automatic


Coil Voltage: 12 Volts (DC)


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


Date First Available: October 16, 2013


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Sep 10

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
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  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • Just what was needed.
Perfect fit. Works well. Hope to get another 300k miles out of this one just like the last.
Reviewed in the United States on May 17, 2025 by MDSG77059
    • OEM Part number
OEM Part Number, car is still running af6ter 6 months. Fit right in
Reviewed in the United States on February 10, 2025 by Amazon Customer
    • Excellent quality
Fixed the problems
Reviewed in the United States on January 13, 2025 by Paul
    • Fixed my 2003 Honda Pilot.
Plug and play.
Reviewed in the United States on December 28, 2024 by Ken Bajema
    • Helped fix 1998 Honda Accord engine stalling problem
If you have a 1998 - 2002 Honda Accord that has a problem with the engine stalling/dying on you when you are driving, I recommend doing two things: (1) change you main relay (for fuel injectors/fuel pump). That is this part that I am reviewing here. (2) Also, change out the ignition wiring because over time that gets old and wears out. Here is the link for this part: https://www.amazon.com/gp/product/B002E53RN6/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&psc=1 Changing out both parts is pretty straight forward and you can do it yourself. See Youtube for some good videos. It took a long time for me to figure out what was causing my car engine to stall (or not start on hot days), but I think I finally resolved the problem by changing both parts out. I have not had an engine stall since replacing both parts. If you think you know which part is failing, you can choose to just change out one part; but if you're not sure which component is failing, I recommend changing both. If you haven't changed out either, it's probably about time to replace both anyway. I hope this helps someone. This is advice I sure would have loved to have read a long time ago. ... show more
Reviewed in the United States on June 4, 2019 by Robert H. Lim
    • No more stalling
My 2000 Honda Accord was stalling while driving quite often. Car was sitting in the shop for 2 weeks and no one had a clue what is was. I did some research and saw this relay was a common issue. Came on here and bought one and went up to the shop and replaced the old one. Problem solved! Drove home and haven't had an issue since! ... show more
Reviewed in the United States on October 30, 2023 by Jasper Taylor
    • Problem solved.
Much needed replacement relay. Relay now powers the ECU/PCM and fuel pump allowing the engine to start every time. While Honda seems to use exceptionally durable components, these main relay modules tend to fail. We think there is an over heating issue as they age. I guess after 400K miles I got my moneys worth. ... show more
Reviewed in the United States on September 7, 2023 by Amazon Customer
    • Works amazing
I did a few things last night I put in this pgm fi and a new throttle position sensor and the car is way more responsive and faster, it kicks into vtec much quicker. Great product
Reviewed in the United States on March 12, 2024 by Ed A

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