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921 LED Bulbs - 360 Degree - Wedge Base - 600 Lumens - White - Qty 2

921 LED Bulbs - 360 Degree - Wedge Base - 600 Lumens - White - Qty 2

Item # ARC48FR
Our Price: $14.22
You Save: 51%
Vehicle Lights

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Easily upgrade your factory bulbs on automotive, marine and RV applications with these white 921 LED bulbs. Compact bulb design prevents fitment or clearance issues. Wedge base. Great Prices for the best vehicle lights from ARC. 921 LED Bulbs - 360 Degree - Wedge Base - 600 Lumens - White - Qty 2 part number ARC48FR can be ordered online at or call 1-800-940-8924 for expert service.
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  • Reviews (133)
  • Q & A (0)
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ARC Vehicle Lights - ARC48FR

  • Replacement Bulbs
  • LED Light
  • Brake Light
  • Tail Light
  • Dome Light
  • 921
  • Pair of Bulbs
  • White
  • ARC

Easily upgrade your factory bulbs on automotive, marine and RV applications with these white 921 LED bulbs. Compact bulb design prevents fitment or clearance issues. Wedge base.


  • LED bulbs provide bright white light for automotive, marine, and RV applications
    • Great for back-up, interior, or courtesy lights
  • Compact bulb design with automotive-grade LED chips
    • Sized similar to OEM bulbs to ensure there are no fitment issues
  • 360-Degree design emits light around the bulb
  • Wedge base mounts into a 921 fixture
  • Durable aluminum construction prevents overheating
  • Reverse polarity protected


  • Quantity: 2 bulbs
  • Bulb type: 921
  • Light output:
    • Raw lumens: 645 lumens
    • Effective lumens: 600 lumens
    • Stable lumens (after 30 min. of usage): 487 lumens
  • Diodes: 23
  • Color temperature: 5,500 K
  • Wattage: 6.5 watts per bulb
  • Power draw at 12V: 0.65 amps
  • Voltage: 9V - 16V DC
  • IP rating: 67
  • 2-Year limited warranty

ARC 3115W Eco 921 LED Bulb Dimensions

Raw Lumens vs. Effective Lumens vs Stable Lumens

Lumens are used to measure the amount of usable light that is put out by a light source. Raw lumens represent the number of lumens that the manufacturer claims the LEDs are capable of producing. It does not include the light's drive method or the amount of light lost from the lens or reflector. Effective lumens take these factors into account and represent the number of lumens that are actually produced by the complete light assembly, not just the amount of light that the diodes are capable of producing. Stable lumens builds off the idea of effective lumens by measuring the amount of light produced after 30 minutes of usage, or once the diodes have reached their average operating temperature. These bulbs have a 645 raw lumen capacity per bulb and produce 600 effective lumens per bulb. The stable lumen capacity per bulb is 487 lumens.

3115W ARC 921 LED Bulbs - Eco Series - Wedge Base - 23 Diodes - White - 5500K - 2 Pack

This Product Fits The Following Vehicles

Customer Satisfaction Score:

Customer Reviews

921 LED Bulbs - 360 Degree - Wedge Base - 600 Lumens - White - Qty 2 - ARC48FR

Average Customer Rating:  4.7 out of 5 stars   (133 Customer Reviews)

Easily upgrade your factory bulbs on automotive, marine and RV applications with these white 921 LED bulbs. Compact bulb design prevents fitment or clearance issues. Wedge base.


I wanted to replace the old bulbs in my trailer but everywhere I looked they were going to cost me $xx or more per pair. I found etrailer while looking on line for trailer parts and was very surprised how affordable the bulbs were. I ordered all the bulbs in the trailer for less than half the cost I was expecting. They arrived yesterday and I put them in. Wow, what a difference. Way better light output, much less battery power being used. All for a fraction of the cost. And the quality of the bulbs was all I had hoped it would be. I was talking to one of my neighbors about your web site and it turns out he has been an customer for a while. Thank you for what you do.



Still couldnt be happier with them. a great product at a great price. Thank you all.


I can’t believe how much better these lights are from my old ones
One of the best things I’ve ever bought,

2021 Toyota Highlander

Unusable. Too hot

Etrailer Expert

Jenny N.


I wanted to see if you could explain in more detail what is happening with the bulbs? Are they causing the whole light to be hot to touch?


I was very pleased with the cost and the product for the part that I ordered


Products are great.


Works perfectly


This LED replacement completely changed the lighting in my RV for the better. I put them in the main living area and work area and you no longer feel like you are living by flashlight. The only drawback to the replacement bulb is it is slightly wider than glass bulbs and it takes significantly more pressure to insert them. However, they will go in without breaking the fixture. The picture shows the clear difference with both type bulbs in a single fixture.

2014 Ford F-150

Worked perfect!! Nice and bright. just what I wanted.


Tha bulbs where everything I was looking for, but packaging for shipping was terrible.

2008 Newmar Mountain Aire Motorhome

These are great bulbs that produce a very white bright light. I would guess they produce twice the light as a normal incandescent bulb.



Still working great! They are not getting used as much as they should but still produce awesome lighting.


I have been having great difficulty finding a short, high lumen, wedge base LED bulb to fit our RV ceiling light fixtures (which have 2 bulbs in one compartment). These have worked... although I wish they were 1000 lumen.


Great product, swapped out all bulbs in rv for LED's


You advertise the bulbs as having 600 lumens. The manufacturers packaging states 450 lumens. The bulbs are 75% brighter than what they are replacing, so I am satisfied with the purchase, but you should correct the information on your web site. Otherwise a great transaction.


super bright. extremely happy with the etrailer customer service. will definitely be ordering again


It got delivered sooner than you thought it would yea




Still working great very bright


One word: lifesaver. Or at the very least, frozen finger and huge time saver!




Much better bulb than I had anticipated. About twice as bright as the original bulbs that came from the factory.


Very bright light for such small LEDs

2011 Cadillac SRX

Very bright. Easy to install. Makes my car look good.





Show More Reviews

See what our Experts say about this ARC Vehicle Lights

  • LED Bulb Replacement for 2006 Georgia Boy Maverick Sconce Lights
    The LED replacement for the 921 that we carry is the 921 LED Bulbs - 360 Degree - Wedge Base - 600 Lumens - White - Qty 2 Item # ARC48FR. I've attached a picture with measurements of the bulb for you so you can measure the socket of the sconce to see if this replacement will fit.
    view full answer...
    Image 1 for
  • Replacement Bulb For A Heng's Jensen JRP1007B Range Hood Light Bulb
    Yes, the 921 LED Bulbs # ARC48FR would be a compatible replacement for a JRP1007B light bulb. With this light being LED it will have a lower wattage and amperage draw for a cooler, brighter light that requires less energy to run.
    view full answer...
  • Arc Cargo Light Replacement Bulb for 2011 Ford F-250 Super Duty
    Yes, the 921 LED Bulbs - 360 Degree - Wedge Base - 600 Lumens - White item # ARC48FR will replace the stock cargo bulbs in your 2011 Ford F-250 Super Duty.
    view full answer...
  • Replacement LED Headlights for a 2000 Acura TL
    No, those are for a dome light. For replacement LED headlights, I recommend the 9005 LED Headlight Bulbs with Anti-Flicker Harness item # ARC99VR. These are confirmed to fit the connectors on your 2000 Acura TL. These headlights are super bright and will be a solid upgrade from the stock lights that came with your Acura. These have a blue hue over the standard yellow that halogen or incandescent have. I have a set of these on my truck and I get flashed a few times a month because people...
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  • Are C921 and 921 Bulbs the Same
    C921 and 921 bulbs are the same fit so what you have should fit. The difference is the C921 is supposed to be just a little brighter. If you can't get your 921 bulb to fit you might check to make sure your old bulb is a 921.
    view full answer...
  • Do I Need Resistors With Replacement Bulbs, # ARC48FR or # ARC93FR
    If you are putting installing the 1157 LED Bulbs - 360 Degree - Double Contact Bayonet - 600 Lumens - White - Qty 2, part # ARC93FR, on your trailer, you will not need to add a resistor. Unfortunately, these bulbs are not compatible with your 2004 Honda Element. I do not think you will need a resistor when you add LEDs to your vehicle. I recommend the 921 LED Bulbs - 360 Degree - Wedge Base - 600 Lumens - White - Qty 2, part # ARC48FR. These bulbs are comparable to the bulbs you attached...
    view full answer...
  • How to Replace a Bulb on a Gustafson RV Sidewall Light
    The Gustafson RV Sidewall Light, part # 277-000254, uses 912 or 921 light bulbs such as # ARC48FR. These are wedge-based and only need to be pulled out (no twisting/unscrewing). For a new one, simply plug it into the socket.
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  • Troubleshooting the Gustafson RV Wall Sconce
    The Gustafson RV Wall Sconce, # 277-000255 is a 12V light fixture that uses a 912 or 921 bulb. Ensure you are using the correct bulb is my first thought past ensuring that voltage is not excessive or that you have a short in the connected wiring. Please check bulb types and use a multimeter to verify correct voltage and perform a continuity check. Replacement bulbs are 921 LED Bulbs - 360 Degree - Wedge Base - 600 Lumens - White - Qty 2 Item # ARC48FR.
    view full answer...
  • How Does Bulb Install in Gustafson RV Ceiling Light w/ Button # 277-000447
    The Gustafson RV Ceiling Light w/ Button # 277-000447 uses 921 bulbs like the # ARC48FR which to install would not require removing the globes around the base. You'd just be able to press the bulb into the socket without removing it.
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  • Replacement 921 LED Bulbs for Interior Lighting
    To replace the 921 bulbs in your 2007 Keystone NRG I recommend using the 921 LED Bulbs - 360 Degree - Wedge Base - 600 Lumens - White - Qty 2 # ARC48FR because they're a 600 lumen light that will provide you with a bright, white LED light. These are wedge base lights, so they'll fit in your existing LED fixtures and they draw 0.65amps of power on your 12v system. I've linked a photo that shows these lights compared to some standard LED bulbs, and I think these will do a great job at brightening...
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    Image 1 for
  • Replacement Range Hood Light Bulb In A Coleman Fifth Wheel
    We very well may have a replacement bulb for the vent hood in a Coleman 5th Wheel. Unfortunately we do not have a way to cross reference anything to know exactly what kind of bulb you will need, but we can certainly point you in the right direction. A very common one for older campers is the Replacement #921 Lamp Bulb # VA0415-00. This will work for many of the older Ventline model range hoods which are quite common. This is an all-glass incandescent bulb like you mentioned. We also have...
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  • Light Bulb Options for Gustafson RV Wall Sconce
    The Gustafson RV Wall Sconce w/ Acrylic Lens, # 277-000241-242 is designed to use either 912 or 921 bulbs.
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  • Trailer Hitch Receiver For 2011 Nissan Altima For Bike Rack
    If there was a 2 inch hitch for your 2011 Nissan Altima I'd love to recommend one but unfortunately that is just not something that exists. That size hitch is not made for an '11 Altima so if you want to use a hitch and hitch mounted bike rack with this vehicle you'd have to get a 1-1/4" Class I hitch and compatible bike rack. The hitch that fits is the following: - Curt Trailer Hitch Receiver # C11352 Then for a Class I bike rack that will work you can use the Kuat Beta # B202-114 or...
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Do you have a question about this Vehicle Light?

Info for this part was:

Employee Jameson C
Expert Research:
Jameson C
Employee Jacob T
Video Edited:
Jacob T
Employee Daron K
Edited by:
Daron K
Employee Brian T
Written by:
Brian T
Employee Michael B
Installed by:
Michael B
Employee Julia Z
Updated by:
Julia Z
Employee Adam E
Test Fit:
Adam E
Employee Aidan B
Test Fit:
Aidan B
Employee John S
Video by:
John S

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