What's The Best H4666 Headlight Conversion Recommended By An Expert

What’s The Best H4666 Headlight Conversion Recommended By An Expert

Looking for the h4666 headlight conversion in the market? Before buying, spend some of your valuable time and do your proper homework. And if you are confused about where to start your research, don’t worry; we have got you covered.

You’ve come to the right spot because we’ve spared you the trouble of looking through tons of reviews and guidelines for finding the best h4666 headlight conversion.

Read on to learn about the factors you need to think of before buying your product.

Best h4666 headlight conversion : Top 10 Picks for 2022

1. GENSSI H4666 4×6 Headlight Conversion Wiring Adapter Cable Plug

Features :

  • Wiring Correction Adapters for Seald Beam Headlight Size H4666
  • END 1: Plugs into your vehicles factory socket – Pins can be reconfigured depending on application see diagram
  • END 2: Plugs into your aftermarket headlight such using H4 type bulbs or connectors
  • Fits: H4666 type plugs; No cutting; No Splicing
  • Pack of 2

Additional Info :

Color black
Item Dimensions
Weight 0.125

2. 4×6 LED Headlight Sealed Beam AAIWA 45W Headlight Replacement 6×4 Conversion Kit for Kenworth KW 900 Peterbilt 379 H4651 H4666 H4656 H6545 4652 Truck Chevy K10 K20 Van RV Camper Headlamp Assembly

Features :

  • LED headlights for trucks with 4×6 (6×4) sealed beam type headlights. Each light with 5600LM for high beam, 2500LM for low beam, newest generation chips, much brighter than stock light.
  • Easy installation: Plug and Play, the headlights are with standard 3-Pin plug (H4 plug), safe on the road use. IP68 waterproof rate, durable aluminum shell body and heat sink design for efficient cooling dissipation.
  • Breathing hole is designed to drive away moisture or water, making the light breathable and contributing to longer lifespan above 50,000 hours, provide safe and stable light source for your cars or trucks.
  • Compatible with headlights: H4656/H4651/4651/4652/H4652/H4666/H6545. Also suitable for most of other vehicles, including sedans, light SUVs and trucks, motorcycles,off-road vehicles and fits most classic vehicles from as early as 1955 through 1988: Dodge Challenger Charger Dart, Chevelle Corvette Nova, Galaxie, Oldsmobile Cutlas, Pontiac GTO, Plymouth Barracuda, Road Runnerlight for your vehicle with sealed beam light system.
  • Package Includes: 2PCS 4×6 inch 45W LED headlight, Please contact us if need any help.

Additional Info :

3. 4PCS Partsam 4×6 LED Headlights Sealed Beam 6×4 Conversion Kit H4651 H4666 H4656 Compatible with Kenworth KW 900/Peterbilt 379/Truck/K10 K20 Van RV Camper Headlamp Assembly

Features :

  • Partsam 4×6 6×4 led headlights update the look of your vehicle while improving your visibility with little to no modification; reducing traffic accidents cause by adverse road condition, ensuring driver’s safety (High beam 5600 lumens / Low beam 2500 lumens per Bulb). 15 Ultra Bright 3W LED Chips; Durable Aluminum Shell Body and Heatsink; Plug and Play; Waterproof rate: IP67; Color Temperature: 6000K; Up to 50,000 Hours. Connector: H4/9003 (hi/low).
  • Interchange Number: H4656 / H4651 / 4651 / 4652 / H4652 /H4666 / H6545. Partsam LED headlamps fit up to 95% of vehicles, including sedans, light SUVs and trucks, motorcycles, and off-road vehicles. Some vehicles such as Toyota may have a different PIN OUT (Low,High, Ground) that is not standard as shown in the main pictures, you simply need re-arrange the pins by buying H4 9003 HB2 Wire Harness Sockets in Partsam Store.
  • 45W LED perfectly fits most Classic Vehicles from as early as 1955 through 1988: Dodge Challenger Charger Dart, Chevrolet Chevelle Corvette Nova, Ford Galaxie, Oldsmobile Cutlas, Pontiac GTO, Plymouth Barracuda, Road Runnerlight for your vehicle with sealed beam light system. Better and more durable than HID kits. Simply change your headlight out.
  • Ventilation Breather Design: If there is moisture or water in the headlight, please open the ventilation breather when headlight is on, then the moisture or water will disappear within short time and headlights can work normally again and are as bright as before, which can make the lifespan much longer. At present only Vplus and Partsam products has this function.
  • Widely Use On: For Freightliner FLD120 FLD132 FLD112; For Peterbilt Rectangular Headlights 379 378 357; For Kenworth KW T800 T400 T600 W900B W900L Classic 120/132 HK, Chevrolet K5 K10 K20 K30 Blazer S10, Chevrolet Suburban K1500 K3500, Chevy C70 C4500 P40 P60, Chevy W3500 W4500 W5500, Chevy Camaro RS, Silverado V10; For camper tractor motorhome RV and all kinds of vans.

Additional Info :

Color 4×6 LED Headlight
Item Dimensions
Height 3.5
Width 4.3
Length 6.7

4. Carpartsinnovate For 4X6 Clear Cut Glass Lens Black Square Headlights Lamps H4 H4666 Conversion Kit

Features :

  • Complete set, comes with both (Driver and passenger) side
  • Direct replacement for stock assembly
  • DOT approved, meets all OE specifications.
  • High quality materials last longer and get you noticed!
  • We offer a 30 day money back guarantee and a 90 day replacement/exchange warranty.

Additional Info :

Color Black Housing Clear Lens

5. 4×6 Inch Sealed Beam Headlight Conversion – fits H4651 H4652 H4666 H4656 – Clear Glass Diamond Cut Housing + H4 LED Kit 6000K Cool White 8000 LM

Features :

  • Contents: 2x Diamond Cut Headlight Housings and 2x H4 LED Bulbs (Hi/Lo Dual Beam).
  • Universal Fitment for vehicles using 4″ x 6″ housing: H4651, H4652, H4656, or H4666.
  • Direct Plug & Play design (certain vehicles will require slight modification, professional Installation is highly recommended)
  • H4 LED bulbs color: 6000K Cool White. Power Consumption: 80 Watt. Luminosity: 8000 lumen.
  • Warranty 2 years

Additional Info :

Color Diamond Cut Housing
Item Dimensions
Height 5
Width 8
Length 11
Weight 3

6. H4656 H4666 Sealed Beam LED Headlight Conversion Kit 4×6 Inch For Trucks GMC W3500 W4500 W5500 Forward Isuzu NPR-HD NQR

Features :

  • A High performance LED replacement headlamp for any vehicle application requiring sealed beam type headlamps to replace H4651 H4652 H4656 H4666 H6545
  • Light output: high beam 3750LM/low beam 1500LM per assembly
  • Perfect for replacing low output simple halogen sealed beams with more effective, efficient, and powerful LEDs.
  • Made by OEM approved & ISO certified manufacturers in materials that meet or exceed strict OEM requirements
  • 45W LED create the perfect light for your vehicle with sealed beam light system.

7. 4×6 Inch Sealed Beam Headlight Conversion – fits H4651 H4652 H4666 H4656 – Clear Glass Diamond Cut Housing + H4 LED Kit 6000K Cool White 8000 LM

Additional Info :

Item Dimensions
Height 5
Width 8
Length 11
Weight 3

8. LLPTA 4pcs 4×6 6×4 Inch Rectangular H4651/H4652/H4656/H4666 Sealed Beam Replacement LED Halo Projector Headlights Assembly H4/9003/HB2 Conversion Kit White High/Low Beam DRL Daytime Running Lights

Features :

  • Applications: These Headlights Conversion Kits Will Fit Any Models With 4″ x 6″ Sealed Beam Rectangular Headlights, Also Known As H4651/H4652/H4656/H4666. Please Use Amazon’s Part Finder Filter And Double Check The Size Of Your Original Headlights To Confirm If They Will Fit Your Vehicle!
  • Package Included: 4pcs 4×6 LED Halo Projector Headlights Assembly With Built-In Daytime Running Lights + H4/3-Prong Adaptors
  • Material: Aluminum Housing With PC Lens
  • Color: Black Housing Clear Lens
  • Installation: Plug & Play. The Lights Have H4 Sockets & Come With H4/3-Prong Adaptors To Fit Most Applications.

Additional Info :

Item Dimensions
Height 4.724409444
Width 8.0708661335
Length 15.354330693

9. Xprite 4X6 RGB LED Headlights w/Wireless Remote Control, Color Changing Halo Ring Headlight Conversion for H4651 H4652 H4656 H4666 H6545 Peterbil Kenworth Freightinger Ford Probe Chevrolet

Features :

  • 【HIGH INTENSITY LED CHIP】New Ultra Thin Design 4×6″ RGB Halo LED Headlights Conversion Kit. Featuring Eye-Catching, Color-Shifting Halos. More Effective and Efficient Than Standard Halogen Lighting.
  • 【THREE LIGHTING MODES】 High Beam , Low Beam ,and Color-Changing Halo Ring Functions. Over 50,000 Hour Lifespan. Low Energy Consumption, High Brightness.
  • 【HIGH QUALITY 】Made of Die-Cast Aluminum for Great Strength. Slotted Design for Optimal Heat Dissipation. All-Weather Design, Protected from Outside Elements.
  • 【NEW REMOTE CONTROL DESIGN】Faster On/Off Response and More Easy Adjustable Brightness & Speed Function Button, Easier to Operate. More Than 21 Light Patterns. Lightweight and Easy to Carry.
  • 【FITMENT】Can be Used in Many Different Aplications. Compatible with Headlights: H4651 H4652 H4656 H4666 H6545.

Additional Info :

Color G2 Series-RGB Halo

10. 4 pcs Black 4×6 LED Headlight Bulb, Sealed Beam Replace Hid Xenon, Rectangular H4651 H4652 H4656 H4666 H6545 for 86-95 JEEP WRANGLER Peterbilt Kenworth FREIGHT-LINER (4×6) & MORE

Features :

  • Compatible with headlights: H4651, h4652, h4656, h4666, h6545
  • Package include: 4 x 45w led headlight, can be used as low beam or high beam, pins on plug may need to be moved on some vehicles, see disclaimer

Additional Info :

Item Dimensions
Height 6
Width 8
Length 10

Take these Factors into Consideration Before Purchasing Your h4666 headlight conversion

Usually, before buying anything, we often consider having opinions from others who have purchased it before. Our first step of research start from ‘Word of Mouth’. That is why reviews matter so much in today’s marketing strategies, as people love to buy the facts used as practical examples by users.

Don’t worry; you don’t have to knock door to door to ask if the h4666 headlight conversion is worth buying or not. Instead, just open your browser and type in the name of your product, and you’ll find a variety of platforms selling it.

Amazon tops the priority list as it has become one of the best online selling platforms around the world. You can also lookup other online selling platforms and go to their review sections to get a good idea about your product.

Another useful way of finding authentic reviews is Reddit threads.Usually, people around the globe seek help for a product review or share their thoughts on how that product is as a whole. Almost all types of product threads are available if it isn’t too rare of a kind.

Therefore, by searching on Reddit, it becomes easier to know about h4666 headlight conversion more as all of the comprehensive details of it are available, be it the function, size, or brand.

Even if you are looking for any specific details for your h4666 headlight conversion, the online reviews can get you covered. Amazon has topped every other online platform in case of authenticity and trust issues. So, you may want to check out the amazon review section for your h4666 headlight conversion.

Although reviews will give you a wide range of criteria to look into, they are not the only thing you need to do to conduct perfect research of your h4666 headlight conversion before buying it.

You should also get the answers to few questions first:

  • How much are you willing to pay for h4666 headlight conversion?
  • Will the h4666 headlight conversion be worth buying?
  • Which are the h4666 headlight conversions available in the market?
  • What are the things you need to check before buying the h4666 headlight conversion?
  • What will be the  way or medium (online or physical store) for buying the h4666 headlight conversion?
  • What are the advantages of purchasing the h4666 headlight conversion?

These are some basic questions you should ask before buying anything. But your inquisitive mind would surely come up with a lot more questions about buying the h4666 headlight conversion. That is why you should always try to gather as much information as possible before going for the purchase.

Advantages of Buying Products from Online Platforms

Recently, our way of shopping has drastically changed its way into online shopping. Because of its benefits and convenience, buyers have become more inclined towards it.

Now, let us dig into some reasons why it has become so famous and why you should consider buying things online as well.

Getting the Best Deals

Because items are sent directly from the manufacturer or seller, there are cheaper offers and better pricing accessible online. It’s also simpler to compare rates and get a better offer. And if you are ordering from outside of your country, you can also escape the tax charges as well.

Getting a Wide Range of Selection

The variety of options available on the internet is incredible. Almost every brand or item you’re interested in may be found here.

You have access to a considerably wider number of styles and sizes than you would find at your nearby shops.

Saving Your Precious Time

The most important benefit of online shopping is its convenience. You can order anything anytime without waiting in lines or asking help from the shop assistants to find you things.

This would save you time and also your physical hardships. No more carrying heavy shopping bags all the way from the market to your home.

How to Select the PRODUCT

Getting the finest h4666 headlight conversion might be difficult for a beginner. Even for old customers, identifying the appropriate product may be difficult.

So let us show you some considerations you can make while choosing the best h4666 headlight conversion:


Price is a crucial factor before buying anything as everyone wants to purchase things at a great deal. Don’t get the wrong idea that your h4666 headlight conversion will only be the best deal to make when it costs more. You always need to compare the price range of other such products similar to your h4666 headlight conversion and decide.

If you are not in a great hurry, waiting for a sale is always wise. When making a purchase, price should always be considered, so be mindful of what you’re spending and whether the item is worth the money.


Some people might think why brands matter if a non-branded product comes with good reviews. But brands do matter.

Simply put, how could a branded product have lasted over a decade if it didn’t have its significance? Of course, brands may matter from one product to another, but you must always compare the brands of your product before buying it.


The higher the functionality, the more extensive the specifications are. So, before you go out and buy something, you need to understand how it works.

It is mainly determined by the product’s specifications. Make sure to check the details of your h4666 headlight conversion and determine if it is the one you want or not

Customer Reviews from the Other Users

Reviews have the ability to impact customer decisions while also bolstering a company’s trustworthiness. The majority of savvy buyers would look up reviews from old users’ experiences with the h4666 headlight conversion, which helps them figure out whether it is reliable.

So, this is a good way of having a good idea about anything before buying.

Final Words

Finally, before you buy something, remind yourself if you really have to. Often we like to buy something, and that’s fine; but, to avoid wasting money on stuff you don’t need, consider the product’s worth to you.

You don’t have to buy anything just because it’s on sale or has good ratings. But if you have your mindset to the best  h4666 headlight conversion, you now know the best possible ways to purchase it.

So, go for buying the best PRODUCT out there in the market and make the good deal out of it.

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