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Honda

Genuine Honda 39400-S84-003 Main Relay Assembly

Based on 172 reviews
Condition: New
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$84.09

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Availability: Only 1 left in stock, order soon!
Fulfilled by Amazon
Arrives Friday, Oct 30
Order within 15 hours and 20 minutes

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At a glance

Condition
New
Model
39400-S84-003
Weight
2 lb
Connector Type
Screw
Contact Material
Silver
Contact Type
Normally Open
Mounting Type
Screw Mount
In the box
Genuine Honda RELAY ASSY-MAIN
Warranty
LIMITED WARRANTY

Features 4

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

Specs 16

Connector Type Screw
Contact Material Silver
Contact Type Normally Open
Mounting Type Screw Mount
Brand Honda
Operation Mode Automatic
Coil Voltage 12 volts_of_direct_current
Minimum Switching Voltage 12 volts_of_direct_current

Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, Oct 30

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
  • Zip Pay in 4
  • Financing through Apple Pay
  • Financing through Google 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
Bien
Bien
Reviewed in the United States on April 3, 2026 by Amazon Customer
Didn't Burn up on Install like the one from autoparts store
This fuel relay worked on install (may 2022). If it fails in the next two years I'll update this review. After years of random engine stalls and waiting 15 - 20 minutes for the car to start again I replaced the fuel relay under the dash as that has resolved the problem. I previously tried a replacement relay from the local autoparts store and it immediately smoked, stunk, and locked in the on position (fuel pump would not shut off and engine would not stop running). ... show more
Reviewed in the United States on June 2, 2022 by Don Buchanan
Original Honda part for a great price
This part is 100% Honda and was provided in a sealed package. Going direct to Honda would’ve cost $150. Worked perfectly.
Reviewed in the United States on April 17, 2024 by TheRealDeal
Four Stars
easy to install, nothing better than genuine parts
Reviewed in the United States on June 5, 2017 by Miik
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
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
Stopped working after 1 1/2 months.
Worked great for a month and a half. Now my car won’t start again. Something wrong with this product.
Reviewed in the United States on June 20, 2023 by Nadine P
How it works
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