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🔥 Upgrade your ride’s climate game — never settle for ‘just high’ again!
This Lower HVAC Blower Motor Resistor is a direct-fit replacement for multiple Ford, Lincoln, and Mercury vehicles, restoring full blower motor speed control for heating and A/C systems. Engineered with OEM-quality materials and backed by a lifetime warranty, it offers a reliable, plug-and-play solution to fix blower motors stuck on one speed or not working at all.











| ASIN | B078TLMGFS |
| Best Sellers Rank | #39,186 in Automotive ( See Top 100 in Automotive ) #72 in Automotive Replacement Blower Motors |
| Brand | AA Ignition |
| Brand Name | AA Ignition |
| Customer Reviews | 4.0 out of 5 stars 3,077 Reviews |
| Manufacturer | AA Ignition |
| Material | resistor |
| Material Type | resistor |
| Model | 3F2Z-18591-AAAA |
| Number of Items | 1 |
| Part Number | 3F2Z-18591-AA |
| Warranty Description | 12 Months Warranty |
F**R
Problem Solved!
This part fit our 2013 Ford Fiesta perfectly and solved our problem with a heater/AC fan that did not blow at all at speeds 1 and 2, barely blew at 3 and worked so-so at 4. I read online that that is usually a symptom of a bad resistor, so took a chance and bought this product. I also saw multiple videos online showing where the part is and how to replace it. The replacement was pretty difficult only because, on my car, the location and access are very awkward -- it is under the dash pointing forward, so I had to unscrew this totally blind and by feel. But ultimately I was able to get the part in may car and the problem is completely fixed. Just like new - all four blower settings blow and 3 and 4 are much harder than before this fix. It's July and the car cooled down super fast. Access may be better in your vehicle, as this part fits multiple models. The part itself feels solid and durable and the configuration/shape/fit were identical to the replaced part. Very satisfied with this part and saved a lot of money with the do it yourself repair.
P**L
Perfect replacement at a great price!
Perfect fit for 2012 Expedition and works great. I watched several youtube videos to get a general idea what to do. On our Expedition I had to remove 3 bolts under the glove box in order to remove the glove box. Videos were correct - a 7mm socket. Once I removed the bolts I opened the glovebox and had to cock it to one side in order to remove it. The resistor was easily seen, almost right in the front. Again the videos were correct and I needed an 8mm socket to remove the 2 bolts holding it in place. The hardest part was getting the bolt out of the far side. I am not a mechanical person so it took awhile to get it out in the space available but I finally did. Someone more proficient with tools would have gotten it out much faster. Having a flashlight helps. Once the bolts were removed the resistor came out easily. I pushed in the clip on the cable and the old resistor came right out. I inserted the new resistor and made sure it clicked in. It will only go in one way. I inserted it back in the slot where I removed it from, making sure it was all the way in and hand started the bolts. Putting them back in went much quicker. My husband (disabled) came out to see what I was doing. I replaced the glovebox and he held it in position while I reinserted the 3 bolts holding it in place. Oh I did test the resistor before I put the bolts back in and it worked like a charm. Definitely saved a lot of money doing it myself. Last time it went we had an extended warranty on our vehicle so it cost us a $100 deductible. If a 60 year old great grandmom can do it, anyone can!
Z**M
Company won't stand by their warranty. Failed after 10 months
I have a 2013 F150 3.5. This resistor installed fine, and worked for about 10 months. It has now failed and does not regulation blower motor at all. Low quality built resistor. I have reached out to the company since they claim to have lifetime warrenty on the product, however I have not gotten a response back. Unhappy with the service. I wish they would hold true to their word.
T**Y
Simple part, correct fit, and it solved the problem.
The HVAC Blower Motor Resistor worked exactly as needed. I installed it in my 2012 Ford Fiesta, and the fit was perfect. Installation was quick and straightforward, with no modifications required. Once installed, it immediately fixed the air flow issue with the blower fan, and everything has been working properly since. Simple part, correct fit, and it solved the problem. For the price, this was an easy and effective fix.
W**.
Works for 2014 Ford F-150
Excellent fit 2015 Ford F-150
K**H
Doesn't seem to last long
6/29/19 update: a free replacement was received today. Pretty impressed with the customer service. Replacement unit works so far, we'll see how long this one lasts. 6/26/19 update: speeds 1, 2, and 3 died on me today, this unit barely lasted 7 months. Email has been sent to see if the lifetime warranty will be properly honored. So far so good on my 2013 F150. I had lost the lower 2 fan speeds when my old blow motor resistor failed, and this plugged right in and got everything working again.
C**K
Fits in my 201 Ford Fiesta SEL, both the 1st and 2nd time
Nice replacement for my blower motor on my Ford Fiesta. Little tough to remove this and install it only because it is in a such a small tight space under the glove box. Update #2 - 8/26/22 , the replacement one I got a few months ago died. Only lasted 8 months. Got in touch with the vendor and once again had a free replacement one shipped out. Installed it and back up and running but lets see how long this one lasts. UPDATE: this blower resistor dies on me after 8 months. Was still under warranty so I reached out to vendor via Amazons chat and was able to get a replacement sent out. Sent out rather quickly. So not good for the product, but kudos to this vendor
I**C
Worked great but only for 9 months
I installed this 9 months ago on 2012 Escape, and it worked great, until it quit functioning this week. So I am not sure the longevity of this part is great. It may be something wrong with my car, or it could be the part itself.
I**N
Good
I have a Ford F-150 2014, the heater only worked at speed 4, now all 4 work.
A**R
Facilité d'installation
Convient parfaitement à mes besoins
R**N
Worked for about two weeks
It fixed the fan in my 2011 f150 for about two or so weeks. Was only blowing on levels 1 and 3. Heat wave last week and noticed fan is messed again. Now blows and 2 and 3. Won't be buying again
D**V
Have a problem contact seller!
Right on the spot seller, part failed after 2 month, Amazon warranty ran out, contacted the seller and got a new replacement part. Seller was fast on reply. So don't leave a negative rating and bad feedback before contacting the seller with your problem.
S**.
Garantis ???
J'espère qu'il va durer plus longtemps que le dernier une couple de mois
Trustpilot
1 week ago
3 weeks ago