3156/3157 CK LED Bulb - Dual Function 27 SMD LED Tower - Wedge Base
Part Number
3157-x27-T-CK-CAR
Overview
Description
These CK-wired bulbs can fit standard or SRCK- and SACK-compatible vehicle tail lights, reverse lights, brake lights, turn signals, and side marker lights. They contain both grounds on the same side of the wedge, but because these bulbs are not polarity sensitive, they can be used in any non-SRCK/SACK 3156 or 3157 socket as well. This dual-contact, dual-function 3156/3157 bulb emits a 360° viewing angle for better, allover light emission with reduced hot spots. Tower-style design with a 16-mm wedge base for easy plug-and-play installation. The energy-efficient bulb operates with in a 9-14.8 VDC range and is designed to last 25 times longer on your car, truck, SUV, or van than incandescent bulbs. Use a ground tester or contact your dealer to see if your vehicle has CK light sockets. Available in amber, red, natural white, and cool white color. Not sold in pairs. Amber lights feature high-intensity LEDs that are ideal for high brightness LED applications. Price per bulb.
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CK Wiring
CK Wiring—How your socket is wired determines the part number of the replacement bulb. CK sockets have a different wiring orientation, with the ground contacts at the top or bottom vs. standard (left/right). They appear in a few vehicles made in specific years and should only be used with compatible CK bulbs. Please consult your vehicle manual or use our Vehicle Bulb Finder tool to verify bulb compatibility with your vehicle's make and model.
Specifications
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| Part NO | Current Draw | Equivalency | LED Color | Lumens | Wattage | Wavelength |
|---|---|---|---|---|---|---|
| 3157-A27-T-CK | 250 mA, 80 mA | 20-25 Watt Incandescent | Amber | 67 Lumens, 200 Lumens | 3.4 Watts | 596 nm |
| 3157-A27-T-CK-2PK | 250 mA, 80 mA | 20-25 Watt Incandescent | Amber | 67 Lumens, 200 Lumens | 3.4 Watts | 596 nm |
| 3157-CW27-T-CK | 250 mA, 80 mA | 25-30 Watt Incandescent | Cool 6500K | 90 Lumens, 270 Lumens | 3.4 Watts | 455 nm |
| 3157-CW27-T-CK-2PK | 250 mA, 80 mA | 25-30 Watt Incandescent | Cool 6500K | 90 Lumens, 270 Lumens | 3.4 Watts | 455 nm |
| 3157-NW27-T-CK | 250 mA, 80 mA | 25-30 Watt Incandescent | Natural 4000K | 90 Lumens, 270 Lumens | 3.4 Watts | |
| 3157-NW27-T-CK-2Pk | 250 mA, 80 mA | 25-30 Watt Incandescent | Natural 4000K | 90 Lumens, 270 Lumens | 3.4 Watts | |
| 3157-R27-T-CK | 220 mA, 80 mA | 25-30 Watt Incandescent | Red | 16 Lumens, 46 Lumens | 3 Watts | 633 nm |
| 3157-R27-T-CK-2PK | 220 mA, 80 mA | 25-30 Watt Incandescent | Red | 16 Lumens, 46 Lumens | 3 Watts | 633 nm |
Comparing Lumens Across Colors: Why Do Colored Bulbs Have Such Low Lumen Values
| 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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Single Filament, Dual Filament, and CK Dual Filament
- How your socket is wired determines the part number of the replacement bulb. Sockets used for a single intensity call for 3156 or 7440 bulbs (single filament). In comparison, sockets with a dual intensity call for 3157 or 7443 bulbs (dual filament). Dual filament bulbs will function appropriately in a single-intensity socket. For example, a 3157 bulb will work in a 3156 socket, and a 7443 will work in a 7440 socket. However, single filament bulbs will not function in a dual-intensity socket. CK sockets have a different wiring orientation, with the ground contacts at the top or bottom vs. standard (left/right). They appear in a few vehicles made in specific years and should only be used with compatible CK bulbs. Please consult your vehicle manual or use our Vehicle Bulb Finder tool to verify bulb compatibility with your vehicle's make and model.
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