Skip to main content

2021 RAM 1500 Classic Bulb Size Chart

Bulb sizes may vary by trim, factory lighting package, region, production date, and previous modifications. Verify the bulb number on your existing bulb before buying.

Last database update: May 2026. Manual review status: Not yet manually reviewed.

Verify before buying: check the bulb number printed on your existing bulb, confirm your trim and factory lighting package, and review the seller's fitment notes.
Disclosure: We may earn a commission from links marked Affiliate. Unmarked retailer links may be plain search links. Always verify bulb fitment before purchasing.

2021 RAM 1500 Classic Bulb Size Chart

PositionBulb CodeAliasesTrim / PackageFactory TypeConfidenceReviewNotesShop
High Beam9005HB3Standard listingHalogenHigh
Pending

Verify trim, factory lighting package, and the bulb number on the existing bulb.

AmazoneBay
Low Beam9005HB3Standard listingHalogenHigh
Pending

Verify trim, factory lighting package, and the bulb number on the existing bulb.

AmazoneBay
Fog Light9006HB4If equipped / package-dependentHalogenHigh
Pending

If equipped; fog light packages can vary by trim.

AmazoneBay
Side Marker3157—Standard listingHalogenMedium
Pending

Verify trim, factory lighting package, and the bulb number on the existing bulb.

Amazon
Turn Signal Front3157—Standard listingHalogenHigh
Pending

Verify trim, factory lighting package, and the bulb number on the existing bulb.

Amazon
Reverse Light921—Standard listingHalogenMedium
Pending

Verify trim, factory lighting package, and the bulb number on the existing bulb.

Amazon
Brake Light921—Standard listingHalogenHigh
Pending

Verify trim, factory lighting package, and the bulb number on the existing bulb.

Amazon
Tail Light3057—Standard listingHalogenHigh
Pending

Verify trim, factory lighting package, and the bulb number on the existing bulb.

Amazon
License Plate194—Standard listingHalogenMedium
Pending

Verify trim, factory lighting package, and the bulb number on the existing bulb.

Amazon

2021 RAM 1500 Classic Fitment Notes

Across the 2019-2022 production range, our database shows changes in the listed Side Marker, Turn Signal Front, Low Beam positions. Use the chart above for this 2021 model, then confirm the bulb number in your vehicle before buying.

Known fitment limitations

  • factory HID or LED packages may use different parts
  • fog lights may depend on equipment package
  • aftermarket headlight assemblies may use different bulbs
  • regional models and production-date splits may differ

See an incorrect bulb size? Submit a correction.

How do the 2021 RAM 1500 Classic's bulbs compare to other years?

The 2021 RAM 1500 Classic uses the same bulbs as the 2020 model.

The 2022 model switched to a different bulb configuration.

This bulb configuration covers the 2020–2021 model years. ← 2020 2022 →

Finding the best installation guide...

Other 1500 Classic Years

202220202019

More from RAM

15002500350045005500C/VDakotaPickup

Other Vehicles That Use 9005 / HB3 Bulbs

2023 Ford Ranger2023 Hyundai Palisade2023 Hyundai Santa Fe2022 Honda Accord2022 Hyundai Elantra2022 Kia Niro

9005 / HB3 Comparisons

9005 vs 90069005 vs H119005 vs H7

Frequently Asked Questions

Our database lists 9005 for the 2021 RAM 1500 Classic low beam headlights. Verify the bulb number on your existing bulb and confirm your trim or factory lighting package before buying.

Our database lists 9005 for the 2021 RAM 1500 Classic high beam position. Some vehicles vary by trim, lighting package, or previous housing changes.

Dim headlights on a 2021 RAM 1500 Classic can come from aging halogen bulbs, cloudy lenses, weak electrical connections, or an incorrect bulb. Confirm the listed 9005 size against the bulb in the housing before choosing a replacement or upgrade.

Our database lists 9006 for the 2021 RAM 1500 Classic fog light position. Fog lights are often package-dependent, so verify that your vehicle is equipped with factory fog lights before ordering.

The 2021 RAM 1500 Classic uses a single bulb (dual filament) headlight system. This means one bulb controls both high and low beams.

LED upgrades are available for many 9005 applications, but fitment, beam pattern, dashboard warnings, and road-use legality can vary. Use products that list your exact bulb family, such as 9005 / HB3, and verify the factory housing before buying.

Our database has a fog light entry for the 2021 RAM 1500 Classic: 9006. Fog lights may still depend on trim or equipment package.

No — the 2021 RAM 1500 Classic uses the same bulb sizes as the 2020 model. This configuration has been consistent across the 2020–2021 generation.

The 2021 RAM 1500 Classic is the last year in the 2020–2021 generation to use the 9005 bulb for the low beam headlight.

Access varies by engine bay layout and headlight housing. Before disassembly, confirm the listed 9005 low beam size on the existing bulb or owner's manual, then follow the service procedure for your exact trim.

Rules for LED headlight retrofits vary by location and by housing type. Avoid products that create glare or lack road-use compliance claims, and check local requirements before using an LED conversion on public roads.

Replacement cost depends on bulb technology, brand, and labor access. Common halogen 9005 replacements are usually cheaper than LED conversion kits. Check seller fitment notes before comparing prices.

Halogen bulbs and LED replacements differ in output, heat behavior, beam pattern, and electronics. A correct bulb code does not guarantee a correct LED beam pattern, so verify physical fit and seller compatibility notes for the 2021 RAM 1500 Classic.