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2021 RAM 3500 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 3500 Bulb Size Chart

PositionBulb CodeAliasesTrim / PackageFactory TypeConfidenceReviewNotesShop
Fog LightH11H8 / H9 / H16If equipped / package-dependentHalogenHigh
Pending

If equipped; fog light packages can vary by trim.

AmazoneBay
High Beam9005HB3Standard listingHalogenHigh
Pending

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

AmazoneBay
Turn Signal Front7440NA—Standard listingHalogenHigh
Pending

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

Amazon
Low BeamH11H8 / H9 / H16Standard listingHalogenHigh
Pending

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

AmazoneBay
Brake Light921—Standard listingHalogenHigh
Pending

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

Amazon
Turn Signal Rear921—Standard listingHalogenHigh
Pending

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

Amazon
Reverse Light7440—Standard listingHalogenMedium
Pending

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

Amazon
Tail Light7528—Standard listingHalogenHigh
Pending

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

Amazon
Side Marker3157—Standard listingHalogenMedium
Pending

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

Amazon
Dome Light904—Standard listingHalogenMedium
Pending

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

Amazon
Map Light904—Standard listingHalogenMedium
Pending

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

Amazon

2021 RAM 3500 Fitment Notes

Across the 2011-2022 production range, our database shows changes in the listed High Beam, Fog Light, 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 3500's bulbs compare to other years?

The 2021 RAM 3500 changed bulb sizes from 2020. The previous model year used a different configuration.

The 2022 model switched to a different bulb configuration.

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

Finding the best installation guide...

Other 3500 Years

20222020201920182017201620152014201320122011

More from RAM

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Other Vehicles That Use H11 / H8 / H9 / H16 Bulbs

2023 Honda Odyssey2023 Nissan Maxima2023 Nissan Murano2023 Toyota 4Runner2023 Toyota Tacoma2022 Chevrolet Colorado

H11 / H8 / H9 / H16 Comparisons

9005 vs H119006 vs H119012 vs H11H11 vs H7

Frequently Asked Questions

Our database lists H11 for the 2021 RAM 3500 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 3500 high beam position. Some vehicles vary by trim, lighting package, or previous housing changes.

Dim headlights on a 2021 RAM 3500 can come from aging halogen bulbs, cloudy lenses, weak electrical connections, or an incorrect bulb. Confirm the listed H11 size against the bulb in the housing before choosing a replacement or upgrade.

Our database lists H11 for the 2021 RAM 3500 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 3500 uses a dual bulb headlight system. This means you have separate bulbs for high and low beams.

LED upgrades are available for many H11 applications, but fitment, beam pattern, dashboard warnings, and road-use legality can vary. Use products that list your exact bulb family, such as H11 / H8 / H9 / H16, and verify the factory housing before buying.

Our database has a fog light entry for the 2021 RAM 3500: H11. Fog lights may still depend on trim or equipment package.

Yes — the 2021 RAM 3500 uses different bulb sizes than the 2020 model. The 2021 generation introduced this bulb configuration.

The 2021 RAM 3500 is the only year in the 2021 generation to use the H11 bulb for the low beam headlight.

Access varies by engine bay layout and headlight housing. Before disassembly, confirm the listed H11 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 H11 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 3500.