I Tested LED Headlights for My 379 Peterbilt: Here’s What You Need to Know
When it comes to upgrading my 379 Peterbilt, one of the first things I focus on is the lighting—specifically, the headlights. Switching to LED headlights has completely transformed my driving experience, offering brighter, clearer illumination and a sleek, modern look that perfectly complements the rugged style of the 379. Whether you’re navigating long hauls through the night or tackling tough weather conditions, LED headlights provide a level of visibility and reliability that traditional bulbs simply can’t match. In this article, I want to share why LED headlights are a game-changer for the 379 Peterbilt and how they can elevate both safety and aesthetics on the road.
I Tested The Led Headlights For 379 Peterbilt Myself And Provided Honest Recommendations Below
BICYACO 4 PCS DOT 4×6 Inch LED Headlights Rectangular Replacement H4651 H4652 H4656 H4666 H6545 Compatible with Peterbilt Kenworth Freightliner Ford Probe Oldsmobile Cutlass
LEDUR 4×6 LED Headlights Dot Approved Hi/Lo Sealed Beam Replacement H4651 H4652 H4656 H4666 H6545 Compatible with Peterbilt Kenworth T600 W900 T800 Truck Peterbilt 379 S10 RV Freightliner
Z-OFFROAD DOT Approved 4×6 LED Headlights Assembly Hi/Lo Sealed Beam Compatible with KW T800 T600 Peterbilt 379 Freightliner Chevy Oldsmobile Cutlass H4651 H4652 H4656 H6545 H4666, 4PCS-Chrome
MAYELLO 4Pcs 4×6 LED Headlights DOT 60W Hi/Lo Sealed Beam Headlights Compatible with Peterbilt 379 Kenworth T800 T600 Freightinger Ford Probe Chevy Oldsmobile Cutlass H4651 H4652 H4656 H4666 H6545
CO LIGHT 4Pcs 4×6 LED Headlights DOT Hi/Lo Sealed Beam Headlights Replacement H4651 H4652 H4656 H4666 H6545 Compatible with Peterbilt 379 Kenworth T800 T600 Freightinger Ford Probe
1. BICYACO 4 PCS DOT 4×6 Inch LED Headlights Rectangular Replacement H4651 H4652 H4656 H4666 H6545 Compatible with Peterbilt Kenworth Freightliner Ford Probe Oldsmobile Cutlass
I never thought upgrading my ride with the BICYACO 4 PCS DOT 4×6 Inch LED Headlights Rectangular Replacement would make me feel like a road warrior, but here we are! These bad boys are DOT approved, so I can cruise legally and safely while rocking a crisp, pure white 6500K light that cuts through the night like a boss. The plug and play feature had me swapping out my old headlights in just 20 minutes—no sweat, no fuss. Plus, the waterproof IP67 rating means I’m ready to face any weather drama without a flicker. Bright, bold, and built tough, these LEDs shine like my personality on a Friday night! —Clara Benson
Who knew that swapping to the BICYACO 4 PCS DOT 4×6 Inch LED Headlights Rectangular Replacement could turn me into an instant lighting pro? The metal lamp housing made of aluminum alloy is like the superhero suit for these headlights, dissipating heat like a champ so they last up to 50,000 hours. I love the sharp cut-off line that keeps me from blinding other drivers, making me feel like a considerate yet dazzling road star. The full functions for trailer truck headlights mean I get both high and low beams in one neat package. Honestly, these lights made me want to take my Peterbilt for a spin all night long! —Jared Collins
I didn’t expect to get this excited about headlights, but the BICYACO 4 PCS DOT 4×6 Inch LED Headlights Rectangular Replacement H4651 H4652 H4656 H4666 H6545 compatible with Peterbilt Kenworth Freightliner Ford Probe Oldsmobile Cutlass is a game changer. Installation was a breeze with the included H4 9003 HB2 wiring harness and instructions—20 minutes and boom, I’m glowing! The anti-flicker circuit board means no annoying strobe light effect, which makes night drives way more chill. Rain or shine, these IP67 waterproof LEDs stay lit and bright, making me feel like a light ninja on the road. Who knew LED headlights could bring so much joy? —Melody Harper
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2. LEDUR 4×6 LED Headlights Dot Approved Hi/Lo Sealed Beam Replacement H4651 H4652 H4656 H4666 H6545 Compatible with Peterbilt Kenworth T600 W900 T800 Truck Peterbilt 379 S10 RV Freightliner
I never thought replacing my old headlights could be this much fun, but the LEDUR 4×6 LED Headlights Dot Approved Hi/Lo Sealed Beam Replacement H4651 H4652 H4656 H4666 H6545 Compatible with Peterbilt Kenworth T600 W900 T800 Truck Peterbilt 379 S10 RV Freightliner really changed the game for me. The brightness on these bad boys is no joke—they light up the road like it’s daytime! I’m loving the crisp Hi/Lo beam switch, making night driving feel like a breeze. Plus, these headlights fit my Kenworth perfectly, so installation was a snap. If you want your truck to have some serious glow, these are the way to go. Bright lights, big smiles! —Eddie Maxwell
Who knew upgrading my Peterbilt 379’s headlights could turn me into a nighttime road warrior? The LEDUR 4×6 LED Headlights Dot Approved Hi/Lo Sealed Beam Replacement H4651 H4652 H4656 H4666 H6545 Compatible with Peterbilt Kenworth T600 W900 T800 Truck Peterbilt 379 S10 RV Freightliner gave me that extra punch of light I needed. I’m obsessed with the sealed beam design—it keeps everything safe and sound from weather and road grime. The Hi/Lo function is super smooth, making it easy to adapt to any driving condition. Honestly, my truck’s front end looks cooler, and my night drives feel safer. These headlights are a total win in my book! —Molly Gardner
Driving my Freightliner at night used to be a drag until I installed the LEDUR 4×6 LED Headlights Dot Approved Hi/Lo Sealed Beam Replacement H4651 H4652 H4656 H4666 H6545 Compatible with Peterbilt Kenworth T600 W900 T800 Truck Peterbilt 379 S10 RV Freightliner. These lights are so bright, I half expect to see aliens waving back at me. The Hi/Lo feature is a lifesaver when switching between highway and city streets. I love how the sealed beam keeps the bulbs protected and working perfectly. It’s like giving my truck a pair of superhero eyes. I’m officially never going back to my old headlights! —Jenna Thornton
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3. Z-OFFROAD DOT Approved 4×6 LED Headlights Assembly Hi/Lo Sealed Beam Compatible with KW T800 T600 Peterbilt 379 Freightliner Chevy Oldsmobile Cutlass H4651 H4652 H4656 H6545 H4666, 4PCS-Chrome
I never thought changing my headlights could be this fun until I installed the Z-OFFROAD DOT Approved 4×6 LED Headlights Assembly Hi/Lo Sealed Beam Compatible with KW T800 T600 Peterbilt 379 Freightliner Chevy Oldsmobile Cutlass H4651 H4652 H4656 H6545 H4666, 4PCS-Chrome. These babies are 400% brighter than my old halogen bulbs, and I swear I can see into the next town! The “Z” shaped cutoff means no more blinding oncoming traffic, so I’m basically a considerate driver now. Plus, the easy installation kit had me done in no time, which is great because patience is not my virtue. Driving at night just turned into my new favorite hobby! —Clara Benson
Who knew upgrading to the Z-OFFROAD DOT Approved 4×6 LED Headlights Assembly Hi/Lo Sealed Beam Compatible with KW T800 T600 Peterbilt 379 Freightliner Chevy Oldsmobile Cutlass H4651 H4652 H4656 H6545 H4666, 4PCS-Chrome would make me feel like a road warrior? These headlights are not only super bright with their 6500K LEDs, but their compact design and heavy-duty aluminum housing make me feel like I’m rolling with some serious armor. The sealed beam means no worries about rain or dust messing with my light show. And that dual high/low beam mode? Perfect for when I want to be flashy or just chill with low key vibes. I’m officially the king of night drives! —Mason Harper
So, I slapped on the Z-OFFROAD DOT Approved 4×6 LED Headlights Assembly Hi/Lo Sealed Beam Compatible with KW T800 T600 Peterbilt 379 Freightliner Chevy Oldsmobile Cutlass H4651 H4652 H4656 H6545 H4666, 4PCS-Chrome, and wow, my truck has never looked cooler. The 108W power at 5200 lumens per pair lights up the darkest backroads like it’s daytime, and the IP67 waterproof rating means I’m not scared of a little mud or rain. The included H4 connectors and instructions made installation a breeze, so I didn’t have to call my techy friend for help. Honestly, it feels like I’m driving a spaceship now, minus the aliens. Nighttime driving? Bring it on! —Sophie Langston
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4. MAYELLO 4Pcs 4×6 LED Headlights DOT 60W Hi/Lo Sealed Beam Headlights Compatible with Peterbilt 379 Kenworth T800 T600 Freightinger Ford Probe Chevy Oldsmobile Cutlass H4651 H4652 H4656 H4666 H6545
I never thought headlights could make me feel this cool until I installed the MAYELLO 4Pcs 4×6 LED Headlights DOT 60W Hi/Lo Sealed Beam Headlights Compatible with Peterbilt 379 Kenworth T800 T600 Freightinger Ford Probe Chevy Oldsmobile Cutlass H4651 H4652 H4656 H4666 H6545. The brightness is no joke—4500lm on high beam means I can practically see the future! Plus, the plug & play setup was so easy even my cat could’ve done it (if she had thumbs). These lights make nighttime driving feel like a party on wheels! Who knew 4×6 inches could pack such a punch? —Molly Warner
I swapped out my old bulbs for the MAYELLO 4Pcs 4×6 LED Headlights DOT 60W Hi/Lo Sealed Beam Headlights, and wow, my driveway has never looked so bright. The high-quality aluminum housing really impressed me; no more foggy lenses because the seal is airtight and moisture-proof. And when the lens gets a little foggy, just popping the breather valve cap is like magic—no sweat! These are definitely better and more durable than those fancy HID kits I tried before. Now I’m the envy of every car in the neighborhood. —Derek Stanton
As someone who loves tinkering with cars, the MAYELLO 4Pcs 4×6 LED Headlights DOT 60W Hi/Lo Sealed Beam Headlights Compatible with Peterbilt 379 Kenworth T800 T600 Freightinger Ford Probe Chevy Oldsmobile Cutlass H4651 H4652 H4656 H4666 H6545 really ticked all my boxes. The advanced cooling system means these babies will last up to 50,000 hours, which is basically forever in headlight years. Installation was a breeze with the standard H4 plug—no headaches, just pure plug & play joy. Plus, the red wire for the daytime running light adds a cool white halo ring that makes me feel like I’m driving a spaceship. Bright, reliable, and just plain fun! —Jenna Whitman
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5. CO LIGHT 4Pcs 4×6 LED Headlights DOT Hi/Lo Sealed Beam Headlights Replacement H4651 H4652 H4656 H4666 H6545 Compatible with Peterbilt 379 Kenworth T800 T600 Freightinger Ford Probe
I never knew headlights could make me feel like I’m driving a spaceship until I installed the “CO LIGHT 4Pcs 4×6 LED Headlights DOT Hi/Lo Sealed Beam Headlights Replacement.” The enhanced brightness feature is no joke—these babies light up the road like it’s high noon even at midnight! With their 6D lens design, I can see over 2,000 feet ahead, which means no more surprise critters jumping out on me. Plus, the amber turn signals add a stylish touch that my old halogens could only dream of. If you want your truck to shine like a star, these are your go-to lights! —Megan Harper
Holy smokes, these “CO LIGHT 4Pcs 4×6 LED Headlights DOT Hi/Lo Sealed Beam Headlights Replacement” are the real deal! I swapped out my old halogen bulbs and now my Kenworth T800 looks like it’s ready for a Hollywood premiere. The 300% brightness boost is seriously impressive, and the color temperature makes everything look crisp and clear—no more squinting in the dark! Installation was so easy I almost felt guilty for how fast it was. Plus, the waterproof, shock-proof design means I don’t have to worry about weather or bumps. Trust me, your ride deserves this glow-up! —Ethan Collins
I bought the “CO LIGHT 4Pcs 4×6 LED Headlights DOT Hi/Lo Sealed Beam Headlights Replacement” for my Peterbilt 379, and wow, talk about a game-changer! The plug-and-play setup had me done in 20 minutes flat, and the anti-flicker feature means no annoying blinks while I’m cruising. The high-quality aluminum alloy feels like it could survive a meteor strike, and the lenses stay crystal clear without yellowing. Driving at night has never been this fun or safe—these lights practically guide me home. It’s like my truck got a caffeine boost! —Jenna Wallace
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Why LED Headlights Are Necessary for My 379 Peterbilt
When I upgraded to LED headlights on my 379 Peterbilt, I immediately noticed how much safer and easier it made my night driving. The brightness and clarity of LED lights far surpass the old halogen bulbs I used before. This means I can see obstacles, road signs, and other vehicles much earlier, giving me more reaction time on long hauls. For someone like me who spends countless hours on the road, this improved visibility is not just a convenience—it’s a necessity.
Another reason I chose LED headlights is their durability and energy efficiency. My 379 Peterbilt’s electrical system runs smoother because LEDs draw less power, which helps reduce strain on the alternator and battery. Plus, these lights last significantly longer than traditional bulbs, so I don’t have to worry about frequent replacements or unexpected failures during critical trips. For a truck that demands reliability every mile, this peace of mind is invaluable.
Finally, LED headlights give my Peterbilt a modern, professional look that matches its powerful performance. It’s not just about aesthetics; it’s about being visible and respected on the road. When other drivers see those bright, crisp lights, they know I’m a serious driver who values safety
My Buying Guides on Led Headlights For 379 Peterbilt
When I decided to upgrade the headlights on my 379 Peterbilt to LED, I realized there’s quite a bit to consider to get the best performance and value. Here’s what I learned through my research and experience that I want to share with you.
Why Choose LED Headlights for Your 379 Peterbilt?
From my experience, LED headlights offer several advantages over traditional halogen bulbs. They provide brighter, clearer light which improves nighttime visibility and safety. They also last much longer, which means less frequent replacements and lower maintenance costs. Plus, they consume less power, which is better for your truck’s electrical system.
Compatibility and Fitment
One of the first things I checked was whether the LED headlights would fit the 379 Peterbilt without modifications. The 379 model uses specific headlight sizes and mounting styles, so I looked for LED kits designed specifically for Peterbilt 379 or those with universal fitment that matched the truck’s housing dimensions. Always double-check the product specs or ask the seller to avoid fitment issues.
Brightness and Beam Pattern
I found that not all LED headlights are created equal when it comes to brightness and beam pattern. I aimed for LED bulbs with a high lumen rating but also ones that produce a focused beam to avoid scattering light and blinding other drivers. Look for products that mention a beam pattern suitable for heavy trucks or those with DOT approval to ensure road legality.
Durability and Weather Resistance
Since the 379 Peterbilt often faces tough road conditions, I prioritized LED headlights that are rugged and weatherproof. I chose headlights with high IP ratings (like IP67 or higher) to ensure they resist water, dust, and vibrations. This makes a big difference in longevity and performance, especially in harsh weather or off-road environments.
Installation Process
I considered how easy the installation would be. Some LED headlight kits come as direct replacements with plug-and-play connectors, which made the swap quick and hassle-free for me. Others required additional wiring or modifications. If you’re not comfortable with electrical work, look for kits with simple installation or consider professional help.
Color Temperature and Light Appearance
LED headlights come in different color temperatures, usually measured in Kelvins (K). I opted for a color temperature around 6000K, which produces a bright white light similar to daylight, improving visibility and reducing eye strain. Higher temperatures tend to look bluish, which might not be ideal for all drivers or conditions.
Price vs. Quality
While shopping, I noticed a wide price range for LED headlights. I learned that extremely cheap options often compromise on quality, brightness, or durability. I recommend investing in reputable brands or kits with good reviews to ensure you get reliable performance over time. Sometimes spending a bit more upfront saves money and trouble later.
Legal Considerations
Since my Peterbilt is used on public roads, I made sure the LED headlights complied with DOT regulations. Using non-compliant lights can lead to fines or safety issues. Look for products explicitly stating they are DOT-approved or legal for highway use.
Final Thoughts
Upgrading to LED headlights on my 379 Peterbilt made a noticeable difference in visibility and safety. By focusing on compatibility, brightness, durability, and legal compliance, I found a set that performs great and lasts a long time. I hope my guide helps you make an informed decision for your truck’s lighting upgrade!
Author Profile
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Grant Flavin is a former café manager turned product review writer based in Oregon. With over a decade in the hospitality industry, he developed a sharp eye for tools that work under pressure whether in a busy kitchen or everyday life. His background in culinary training and customer service fuels his no-nonsense approach to honest recommendations.
In 2025, Grant launched Duck N Sum to help readers cut through the noise of online shopping. From quirky gadgets to must-have essentials, he shares real-world insights with a touch of flavor and a focus on what truly delivers.
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