{
    "lazyNodes": false,
    "abFitnotesFlag": false,
    "abCrawlReviews": false,
    "productOptionsCookie": false,
    "orderDelayFlag": false,
    "skipSessionCookie": false,
    "covidMessage": false,
    "fullTitleCookie": false,
    "nrLoggerCookie": false,
    "checkoutReviewCookie": false,
    "productOptionSeqCookie": false,
    "maintenanceFlag": false,
    "bufferETACookie": false,
    "multiShippingDiscountFlag": false,
    "newFitmentFlag": false,
    "surveyOptInFlag": false,
    "crossSellFlag": false,
    "skuMappingFlag": false,
    "paySplitCookie": false,
    "callDisableFlag": false,
    "zipPaymentFlag": "u",
    "hassleFreeReturn": false,
    "lifetimeReplacement": false,
    "cpn_off": false
}
0
0
Price Match Guarantee
60-Day Returns
Lifetime Replacement
Price Match Guarantee
60-Day Returns
Lifetime Replacement
Select your vehicle
Vehicle Info Required to Guarantee FitAdd Vehicle

Hayden®
3647 Auxiliary Fan Control Unit - Direct Fit, Sold individually

Tap image and pinch to zoom.
$28.49
$50.00Save: $21.51(43%)
Manufacturer #3647
Vehicle Info Required to Guarantee FitAdd Vehicle
Qty:
1

Highlights

Part:
Auxiliary Fan Control Unit
Brand:
Hayden
Warranty:
1-year or 12,000-mile Hayden limited warranty
Quantity Sold:
Sold individually
Prop 65 Warning:

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Product Fit:
Direct Fit

Vehicle Fitment Information

Vehicle Name
Submodel
Engine
Fitment Information
1900
All Submodels
All Engines
-
1900
All Submodels
All Engines
-
1900
All Submodels
All Engines
-
1942 Buick Century Series 60
All Submodels
All Engines
-
1942 Buick Limited Series 90
All Submodels
All Engines
-
Page 1 of 1056 | Showing 1 - 5 of 5276 results

Product Information

HAYDEN ADJUSTABLE THERMOSTATIC FAN CONTROL KIT -- 160-210 degrees Fahrenheit adjustment range, dual fan, push-in probe sending unit style; Includes sending unit, relay, wiring harness, manual override switch, and air conditioning relay; Allows your electric fan to turn on and off at certain temperatures; Compatible with own fans and OE cooling fans.
Need help?Call our product expert1-866-529-0412
Chat with us
Mondays - Sundays7am - 11pm ET | 4am - 8pm PT
Warranty Policy
Right parts, guaranteed. If you find any defects, let us know within 60 days and we’ll take care of it. Check out our Warranty Policy for more details.
Shipping Policy
We ship fast so you can get on the road that much faster. Check out our Shipping Policy for more details.
Easy Return Policy
We’re only happy if you’re happy. If you’re not entirely satisfied with your order, you may be entitled to a refund. Check out our Return Policy for more details.

Product Q&A

2
does this just plug in to existing plugs?Harold H.May 30, 2021
Best Answer:Hi Harold, I'm glad to help you out. This item plugs into the existing plugs. This item may also need additional cutting and splicing of wires. Take advantage of the sale price for this item. Click this link to order this part: <a href="https://www.carparts.com/auxiliary-fan-control-unit/hayden/hy3647?can=CPAP3648" target="_blank">https://www.carparts.com/auxiliary-fan-control-unit/hayden/hy3647?can=CPAP3648</a> I hope this helps. Happy shopping.
Aldrin P.STAFFMay 30, 2021
0
Does this Fit a Mazdaspeed 3 2013, 2.3L ?David P.May 24, 2024
Best Answer:Hi David, thanks for initiating contact. Yes, this part will fit the 2013 Mazda 3, all submodels, and all engine sizes. You can click the link below for direct ordering to take advantage of our ongoing discount and limited stocks. Happy shopping. <a href="https://www.carparts.com/auxiliary-fan-control-unit/hayden/hy3647?can=CPGG4850_CSQA_20240524" target="_blank">https://www.carparts.com/auxiliary-fan-control-unit/hayden/hy3647?can=CPGG4850_CSQA_20240524</a>
Grace G.STAFFMay 24, 2024
0
Does this connect to the factory plugs? I own a 2008 Jeep Grand Cherokee LaredoMartin A.May 13, 2021
Best Answer:Hi Martin, I'm glad to assist you. As per checking, yes, this is a direct fit part for your given vehicle application, an auxiliary fan control unit with wiring harness included. Please click the link below to order this part today. I hope this helps. Happy shopping. <a href="https://www.carparts.com/auxiliary-fan-control-unit/hayden/hy3647?can=CPJE1043" target="_blank">https://www.carparts.com/auxiliary-fan-control-unit/hayden/hy3647?can=CPJE1043</a>
Jeonino E.STAFFMay 13, 2021
0
Is it a 4 prong ?JimmyJul 21, 2020
Best Answer:Hi James, It has a 6-pin male type connector.
Arnel E.STAFFJul 21, 2020
0
Is the selection switch on the dash included?A shopperMay 21, 2020

Customer Reviews

Auxiliary Fan Control Unit - Direct Fit, Sold Individually
Working like it should.
Installed and working on my 71 Demon running a 17” Derale fan there is about a 20 degree span between on and off. Only reason for 4 stars is I just put it on if it holds up I would give it 5 stars. Easy install.
Paul D.
VERIFIED PURCHASER
Purchased on Jun 18, 2024
Auxiliary Fan Control Unit - Direct Fit, Sold Individually
Auxiliary fan control
Great, works perfect & easy to install tku
Raymundo A.
VERIFIED PURCHASER
Purchased on Aug 03, 2020
Auxiliary Fan Control Unit - Direct Fit, Sold Individually
The relay failed as soon as i got to carwash. Today was the first day i installed it. AWWWWWW
Walter P.
VERIFIED PURCHASER
Purchased on Aug 20, 2020