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3157 LED Bulb w/ Reflector Lens - Dual Function 1 High Power LED - Wedge Retrofit





- Not sold in pairs, price per bulb.
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Product Information
- Your vehicle may require an LED compatible Flasher or Load Resistor. LED brake/tail lamps will not flash with most stock flasher units due to their extremely low current draw. Try our Vehicle LED Bulb Finder to find a compatible flasher for your vehicle. Please See More LED Car Bulb Notes
- This bulb is oversize, please see dimensions under Specifications tab.
- For best results the LED color should be the same as the lens color. If bulb is behind a clear lens, use the appropriate color for turn and brake light functions. Please See More LED Car Bulb Notes
- If your daytime running light application serves multiple purposes, this bulb will most likely not work for your vehicle.
- To protect LEDs in marine applications, it is advisable to use a 12 VDC line conditioner to compensate for voltage irregularities common in marine low-voltage systems.
Product Description
Oversize LED replacement bulbs can fit numerous boat and RV applications such as navigation lights, cabin lights, dome lights, tail lights, brake lights, reverse lights, turn signals or side marker lights. This 3157 dual-contact, dual-function bulb has 1 high-power LED (3-watt). An integrated reflector lens creates a magnified 320° viewing angle for better, allover light emission with reduced hot spots. Produces up to 105 lumens at 5500K. 16-mm Wedge base for easy plug-and-play installation. The energy-efficient bulb operates within a wide 12-24V DC range and is designed to last 20,000 hours on your motorhome or boat—17 times longer than incandescents. Available in cool white, amber and red. Not sold in pairs. Price per bulb.


RoHS stands for Restriction of Hazardous Substances. Certain materials used in electronics and electrical products have been deemed hazardous to people and the environment and, therefore, must be limited. For a product to be RoHS compliant, testing must be performed and documented to show limited or no use of cadmium, hexavalent chromium, lead, mercury, polybrominated biphenyls, and polybrominated diphenyl ethers.

- 12VDC replacement bulb for SRCK/SACK compatible
- Tail Lights, Reverse Lights and Brake Lightst
- Cabin Light and Dome Lights
- Turn Signal and Side Marker Lights
- Navigation Lights
- 1 High Power LEDs(3 Watts)
- Dual Intensity 16mm Wedge Base Lamp
- 320 Degree Beam Angle
- Oversized Bulb
- Instant On/Off
- Plug and Play
Specifications Print Specifications
Base Type | 3157 | ||
---|---|---|---|
Beam Angle | 320 degree | ||
CAN Bus[1] | No | ||
LED Lifetime | 20000 Hours | ||
LED Quantity | 1 LED | ||
Operating Temperature | -30~+85 °C | ||
Oversize | Yes | ||
Polarity Sensitive | No | ||
Standards And Certifications | RoHS Compliant | ||
Storage Temperature | -40~+100 °C | ||
Type | Replacement Bulb | ||
Viewing Angle | 320 degree | ||
Operating Voltage | 12~24V AC/DC | ||
Stock Numbers: 2358, 2358NA, 2458, 3047, 3047K, 3047LL, 3057, 3057A, 3057ALL, 3057K, 3057KLCP, 3057KX, 3057LL, 3057NA, 3057ST, 3057X, 3155, 3155LL, 3157, 3157A, 3157AK, 3157K, 3157KLCP, 3157KX, 3157LL, 3157NA, 3157NAK, 3157NALL, 3157ST, 3157X, 3357, 3357A, 3357ALL, 3357K, 3357LL, 3357NA, 3357NAK, 3454NA, 3454NAK, 3456K, 3457, 3457A, 3457AK, 3457ALL, 3457AST, 3457K, 3457NA, 3457NAK, 3457NAKLCP, 3757A, 3757AK, 3757ALL, 3757NAKLCP, 4057, 4057K, 4057LL, 4114, 4114K, 4114KLCP, 4114LL, 4157, 4157K, 4157LL, 4157NA, 4157NAK, 4157NAKLCP, 5702A, 5702AK, L1230R-4C | |||
Package Weight: 0.77oz (0.02kg) | |||
Package Dimensions: 2.43" (6cm) x 0.91" (2cm) x 0.91" (2cm) | |||
All specifications are subject to change without notice. 1. CAN Bus LED bulbs are simple plug-and- play LED bulbs which are made specifically for CAN Bus-equipped vehicles. These bulbs work with your vehicle's advanced computer system, so when your vehicle's computer reads them, they respond back correctly. To see if your vehicle operates with a CAN Bus system, simply remove the bulb you're looking to replace, start your vehicle, and if you have a "Bulb Out" message on your dash you have a CAN Bus system. |
Part NO | CCT / Wavelength CCT / Wavelength ![]() | Brightness Brightness For best results, the LED color should be the same as the lens color. If the bulb is behind a clear lens, use the appropriate color for turn and brake light functions. When installed in a housing that has a matching colored lens, red and amber bulbs will appear brighter than white LED bulbs - even though they have lower lumen outputs. As an example: a red lens will filter out all but the red portion of light from a bulb, so if the light being emitted from the bulb is all red, none or very little light will be blocked by the lens. The light from a white LED bulb contains very little light in the red portion of the visible spectrum, so most of the light that contributes to its higher lumen value would be filtered out by a red lens. This makes the white bulb appear dimmer than the red bulb. ![]() | Beam Angle Beam Angle Beam angle is used to express the width of the light emitting from the source. The narrower the beam angle the more focused the light energy is. Comparing two 40 watt lights one with a beam angle of 30(a) and another with a beam angle of 90(b), They both produce the same amount of light output but (a) will appear brighter in the beam angle compared to (b) at the sacrifice of light spread. ![]() | Current Draw @ Operating Voltage Current Draw @ Operating Voltage Current Draw is used to size fuses and wire for a circuit. Current draw is the amount of energy consumed by an LED or LEDs in an electrical circuit at a specific voltage, measured in amps (A) or milliamps (mA). | Price Ea. | Weight | |
---|---|---|---|---|---|---|---|
3157-A3W | 590 nm | 52 lm | - | 235 mA | $8.88 | - | |
3157-R3W | 630 nm | 50 lm | - | 240 mA | $8.88 | - | |
3157-W3W | 5500 K | 125 lm | - | 270 mA | (Discontinued) | - |
Lumen meters are a great way to measure white light output but can be deceptive for colored bulb intensity. Lumens measure light wavelengths in all colors of the visible spectrum. Because multiple wavelengths create white light and colored bulbs are a single-wavelength source, colored bulbs will have lower lumen readings. However, they will appear equally as bright as a white bulb. | ![]() |
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NamePeter
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Technical LevelExpert
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Part Number3157-A3W
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Reviewed On06/06/14
2007 Jeep JK front turn signals
I ordered these to use in my wife's Wrangler. They fit perfectly, I used an 8-ohm 25 watt ballast resistor between the turn and ground wires in the harness on each side. No problems at all, and they're as bright as the original incandescents.