Universal Headlights

Four sizes. Start with your fit.

Shop universal headlights by size

Find 4×6 and 5×7 rectangular headlights, plus 5.75-inch and 7-inch round headlights. Compare LED options, heated models and conversion housings in the collection that matches your existing light.

Choose the size of your existing headlight.

4×6″ Rectangular headlight example

4×6″ Rectangular

Compare compact rectangular headlights by low beam, high beam or combined high/low function.

Shop 4×6″ Rectangular headlights
5×7″ Rectangular headlight example

5×7″ Rectangular

Explore larger rectangular headlights, including LED and halogen conversion options.

Shop 5×7″ Rectangular headlights
5.75″ Round headlight example

5.75″ Round

Shop 5¾-inch round headlights with a choice of beam functions and styling.

Shop 5.75″ Round headlights
7″ Round headlight example

7″ Round

Compare 7-inch round headlights, heated options and available position-light styles.

Shop 7″ Round headlights
Fitment checklist

1. Match the physical fit

Confirm the current lamp size, mounting ring or bucket, rear clearance and listed application. A matching size label alone does not confirm installation fit.

2. Match the beam & wiring

Choose the correct low beam, high beam or combined high/low model. Review voltage, connector and pinout; check whether auxiliary lights need separate wiring.

3. Check what is included

Distinguish a complete headlight from a conversion housing, bezel or adapter. Confirm bulbs, mounting hardware, quantity and any additional parts needed.

Before you order

Three checks for a better match

1. Match the physical fit

Confirm the current lamp size, mounting ring or bucket, rear clearance and listed application. A matching size label alone does not confirm installation fit.

2. Match the beam & wiring

Choose the correct low beam, high beam or combined high/low model. Review voltage, connector and pinout; check whether auxiliary lights need separate wiring.

3. Check what is included

Distinguish a complete headlight from a conversion housing, bezel or adapter. Confirm bulbs, mounting hardware, quantity and any additional parts needed.

Headlight buying questions

Universal headlight FAQs

Which universal headlight size do I need?

Start with the size and shape of your existing lamp, then compare its markings and dimensions with the selected product. This page groups four collections: 4×6 rectangular, 5×7 rectangular, 5.75-inch round and 7-inch round. Confirm mounting depth, connections and beam function before ordering.

Does universal mean it fits every vehicle?

No. These collections use common size formats, but fit depends on the exact lamp, vehicle, mounting parts and wiring. Use the product’s fitment information rather than size alone.

Are 5.75-inch and 5¾-inch headlights the same size label?

Yes. 5.75 inches and 5¾ inches describe the same nominal size. It is different from the 7-inch round format; mounting details still need to match your installation.

Can I choose a high-beam-only lamp for any position?

Match the lamp’s stated beam function to the required position. A high-beam-only model is different from a combined high/low headlight; review the selected product and your existing system.

Are all headlights heated or equipped with a halo?

No. Heated lenses, halos and position lights are model-specific features. Check the exact listing and wiring requirements for the version you select.

What should I check for on-road use?

Review the selected product’s stated intended use, certification information and installation instructions. Do not assume every item in a size collection has the same specifications or intended application.

Not sure which size to choose?

Send our team your vehicle details, current headlight markings and mounting photos so we can help narrow down the right collection.

Ask the BTS team

Upgrade your ride with our full range of Universal LED Headlights, designed to deliver cutting-edge performance while maintaining the classic look you love. Whether you’re restoring a vintage muscle car, upgrading a semi-truck, or modernizing a Jeep or motorcycle, our 4×6″, 5×7″, 5.75″ round, and 7″ round LED headlights provide the perfect blend of style, safety, and simplicity.

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4x6 LED headlights
4x6 LED headlights
5x7 Headlights
5x7 Headlights
5.75 Round Headlights
5.75 Round Headlights
7 Round Headlights
7 Round Headlights