Does this thing really push 640 cfm's? that seems extremely high for that style fan.

It seems that every seller, of this style of fan, lie through their teeth about the cfms, and can't seem to get their numbers straight. Also, the 4 and 5 star reviews look more like paid reviewers, than people who actually use the fans. They are built cheap, and usually last from a couple of weeks, to at most, a couple of years. Which honestly, for a 21 dollar fan, you can't complain. I'd recommend either going by the vehicle manufacturer's recommendations or ask a mechanic for a recommendation.

Can this be used with a fan speed controller? (Will it run on a range of 5-12v?)

Yes fan speed controller works great. You can even reverse it.

How much does its CFM drop if it's installed to push air?

no cfm drop ,just turn over fan blade

What are the measurements of the shroud?

Don't know, I returned it because it only pushes air in one direction. The blades weren't straight cut, they were pitched.

6 Inch Slim 650cfm Radiator Cooling Fans Universal Slim Pull

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Description

❄️ Stay cool, stay ahead — the ultimate slim fan for engine perfection!

QUIET YET MIGHTY - Operates at a low 50 dB noise level, balancing power with peace.
VERSATILE FITMENT - Universal 12V compatibility with push or pull installation for most classic and hot rod engines.
COMPACT POWERHOUSE - Slim 6-inch design fits tight engine bays without compromise.
EASY DIRECT REPLACEMENT - Comes with a mount kit for hassle-free installation and instant upgrade.
MAXIMUM COOLING EFFICIENCY - Delivers a robust 650 CFM airflow to keep your engine chill under pressure.

The 6 Inch Slim 650CFM Radiator Cooling Fan by Fekuar is a high-performance, universal 12V electric fan designed for tight engine spaces. With a powerful 650 CFM airflow, 80W power consumption, and a quiet 50 dB operation, it fits most classic and hot rod engines as a direct push or pull replacement. Its slim 6-inch profile and included mount kit make installation straightforward, ensuring your engine bay stays optimally cooled and ready for any drive.

Specifications

ASIN	B087TF2N2S
Air Flow Capacity	650 Cubic Feet Per Minute
Best Sellers Rank	#53,110 in Automotive ( See Top 100 in Automotive ) #30 in Automotive Replacement Engine Fans
Brand	Fekuar
Brand Name	Fekuar
Compatible Devices	Engines
Cooling Method	Air
Customer Reviews	4.5 out of 5 stars 658 Reviews
Item Dimensions L x W x H	8.46"L x 8.07"W x 2.55"H
Item Weight	1 Ounces
Manufacturer	Fekuar
Material Type	Metal, Plastic
Maximum Rotational Speed	2250 RPM
Model	UB0614
Noise Level	50 Decibels
Number of Items	1
Part Number	UB0614
Power Connector Type	3-Pin
Product Dimensions	8.46"L x 8.07"W x 2.55"H
Unit Count	1 Count
Voltage	12 Volts
Wattage	80 watts

Reviews

A**S

7.04.2026

J**H

11.06.2025

M**E

12.02.2025

S**Z

6.03.2021

V**3

30.08.2025

D**D

15.07.2025

A**R

3.09.2025

D**W

21.05.2025

C**R

12.12.2025

S**S

8.09.2024

R**N

22.09.2024

D**N

26.02.2025

J**R

12.03.2025

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€ 49.88

Duties & taxes included

In stock

Sold byAmazon PortugalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Portugal.

Secure transaction

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Fast, free shipping, member pricing & priority support.

Join PRO →

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6 Inch Slim 650CFM Radiator Cooling Fans Universal Slim Pull Push 12V 80W Direct Replacement Electric Fan with Mount Kit

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Common Questions