Hella 4x6 Rectangular Sealed Beam Headlight, H1 Bulb
Hella 4x6 Rectangular Sealed Beam Headlight, H1 Bulb — Product description
The Hella 4x6 rectangular sealed beam headlight is a direct replacement for the glass sealed beams on older trucks, Jeeps, RVs, and off-road rigs. It runs a single H1 bulb, carries a standard clear lens, and skips the turn signal. Improved optics put more usable light on the road without the extra glare. Sold as a single lamp.
The Hella 4x6 rectangular sealed beam headlight is a direct replacement for the older glass sealed beams that came on a huge range of trucks, Jeeps, RVs, and off-road rigs. This one runs a single H1 bulb, carries a standard clear lens, and comes without a turn signal built in. It's sold as a single lamp, so you can replace just the one that's fogged or cracked, or buy a matched set to redo the whole front end at once.
If your vehicle came with 4 x 6 inch rectangular headlights, you already know the type. Square-body Chevy and GMC trucks, older Jeep Cherokees and Wranglers, medium-duty and heavy trucks, farm and construction equipment, and plenty of classic-era cars all used this exact size. The lamp drops into the same bucket and connector layout, so there's no cutting or fabricating to get it mounted.
The H1 is a single-filament bulb, which means this lamp handles one beam function. In a four-headlamp setup the inner pair usually runs high beam on a single-filament bulb like the H1, while the outer pair carries the low or combined beam. So if you're chasing a dim or dead high beam, this is the lamp you want. And because the H1 is a common, replaceable bulb, you're not locked into a throwaway unit the moment a filament goes. Pop the bulb, swap it, keep the housing.
Hella built the reflector optics here to put more usable light on the road without throwing extra glare back at oncoming traffic. That's the whole point of good headlight optics. You want a clean, controlled beam pattern that lights up what's ahead, not a wall of scatter that blinds everyone and actually makes it harder to see. The improved optics give you a sharper cutoff and better reach than a tired factory sealed beam that's been baking in the sun for twenty years.
A few honest install notes. This lamp doesn't include a turn signal, so it belongs in a system where the markers and signals live in a separate housing. If your old setup relied on a combination lamp, plan for that. The connector on older vehicles is the classic three-prong sealed beam plug, and depending on age you may need a short pigtail adapter to match the H1 base cleanly. It's a five-minute job either way. On anything that sees weather or vibration, a dab of dielectric grease on the connector keeps corrosion and condensation out of the contacts.
Because it's sold singly, match your pair. Running one fresh Hella lamp next to a yellowed old sealed beam looks off, and the beams won't match in color or intensity. If one side has failed, the other usually isn't far behind, so a lot of folks just do both while they're in there. And if you run a quad system, remember the inner and outer lamps aren't interchangeable. Put the H1 high-beam units where the high beams go.
The standard clear lens keeps the beam pattern honest and the light true to color, no tint and no projector trickery, just a clean sealed beam replacement. It's built for the 12-volt systems these vehicles run. Keep the lens clean and the connector dry, and this is genuinely a fit-and-forget part.
This is straightforward, no-drama lighting hardware from a company that's been making vehicle lamps for a long time. It's a sensible step up from a decades-old sealed beam, it keeps a legal low-glare beam pattern, and it uses a bulb you can buy anywhere. For anyone bringing an older truck, Jeep, or piece of equipment back to safe night driving, it's an easy call.
Key Features
- 4 x 6 inch rectangular sealed beam format drops into factory buckets with no cutting or fabricating
- Single-filament H1 bulb is replaceable, so you keep the housing when the bulb burns out
- Improved reflector optics deliver a controlled beam with a sharper cutoff and no added glare
- Standard clear lens for true-color, uncut light output
- Handles high-beam duty in split and quad 4x6 headlamp systems
- No built-in turn signal, pairs with separate signal and marker housings
- Sold as a single lamp so you replace exactly what you need
- Fits square-body trucks, older Jeeps, RVs, heavy trucks, and equipment that used 4x6 sealed beams
- 12-volt operation, the standard for these applications
- Hella lamp engineering for reliable, fit-and-forget night driving
Why Buy from NVN Marine
- Authorized Hella Marine reseller, full manufacturer warranty
- NMEA member and ABYC certified, advice from real boat techs
- Same-day shipping before 3 PM ET on in-stock items
- NY headquarters and Fort Lauderdale flagship retail store
Technical specifications
| Title | Hella 4x6 Rectangular Sealed Beam Headlight, H1 Bulb, Single |
|---|---|
| Brand | Hella |
| Manufacturer Part Number | 003177871 |
| UPC | 4082300015348 |
| Lamp Size | 4 x 6 Inch Rectangular |
| Bulb Type | H1 (single filament) |
| Lens Type | Standard Clear |
| Turn Signal | Not included |
| Sold As | Single lamp |
| Optics | Improved optics without increased glare |
| Housing Length | 165 mm |
| Voltage | 12V |
| Application | Sealed beam headlight replacement (off-road / automotive) |
Frequently asked questions
Is this sold as a single lamp or a pair?
It's a single lamp. If both of your headlights are original and yellowed, most people replace them in pairs so the color and intensity match, but you can buy just the one you need.
What bulb does this headlight use?
It uses an H1 bulb. The H1 is a single-filament halogen bulb, which is why this lamp handles one beam function rather than combining low and high beam in a single unit.
What is the equivalent of an H1 headlight bulb?
The H1 is a specific single-filament halogen standard with its own base, so there's no direct cross-swap to a differently keyed bulb like an H4 or H7. Any bulb sold and marked as H1 will fit this lamp.
What bulbs are compatible with H1?
Only H1 bulbs fit this housing. The H1 base and single-filament design are unique, so you replace it with another H1 rather than an H3, H4, or H7. H1 bulbs are widely stocked, so replacements are easy to find.
Does this lamp have a built-in turn signal?
No. This is the without-turn-signal version. It's meant for vehicles where the turn signals and markers live in a separate housing, so make sure your setup has that before installing.
What vehicles use 4x6 rectangular sealed beams?
Plenty of them. Square-body Chevy and GMC trucks, older Jeep Cherokees and Wranglers, medium and heavy trucks, RVs, farm and construction equipment, and many classic-era cars all used the 4 x 6 inch rectangular sealed beam size.
Is this a low beam or a high beam lamp?
The single-filament H1 handles one beam function, and in a four-headlamp 4x6 system the single-filament lamps run the high beam in the inner position. If you're replacing a dim or dead high beam, this is the lamp.
Do I need an adapter to install it?
On many older vehicles the factory connector is a three-prong sealed beam plug, so depending on the age of your rig you may need a short pigtail adapter to match the H1 base. It's a quick job either way.
Is the lens clear or tinted?
It's a standard clear lens, so you get true-color light output with no tint. The improved optics focus the beam for better reach without adding glare for oncoming drivers.
Can I run one new Hella lamp next to an old sealed beam?
You can, but it won't look or perform right. A fresh lamp next to a yellowed original will differ in color and brightness, so replacing both sides at once gives you an even, matched beam.
