3157 LED Turn Signal Bulb Ultra-Bright White & Yellow, Plug-and-Play, Long-Lasting Automotive LED
Performance Characteristics
The chip arrangement on this 3157 LED turn signal bulb produces a wide light pattern with relatively even distribution, which helps maintain visibility when signaling or parking. Response time is shorter compared to standard filament bulbs, as is typical for LED-based units. The 270LM output is adequate for indicator functions without being overly bright for adjacent road users.
Specifications
| Model | 3157 LED turn signal bulb – 22SMD |
| LED Chip | 5630 SMD, 22 pieces |
| Housing Material | Aviation aluminum |
| Power Consumption | 3W per bulb |
| Luminous Flux | 270LM |
| Color Temperature | 6500–7000K (white) / 2800–3000K (amber) |
| Operating Voltage | DC 12V |
| Dimensions | 17.8mm × 63.3mm |

Construction and Durability
The aluminum housing serves as a passive heat sink, helping to keep internal temperatures within operational ranges during extended use. The housing also provides some resistance to vibration and minor impacts, which is relevant for bulbs mounted on moving suspension components. No cooling fans or external drivers are required, which simplifies installation and reduces potential failure points.
Installation and Compatibility
This 3157 LED turn signal bulb uses a standard socket fitment with a compact body profile. In most vehicles, it installs without adapters or wiring changes. However, some cars with CAN-bus systems may require additional resistors or load equalizers to prevent hyper-flash, which is a common consideration for LED turn signal upgrades and is not specific to this model.
Applications
The bulb fits passenger cars, SUVs, pickup trucks, and light commercial vehicles that use the 3157 or equivalent socket. It is available in both white and amber color temperatures to accommodate different regional regulations and user preferences.
OEM and ODM Services
For B2B buyers, this 3157 LED turn signal bulb can be supplied with custom packaging, logo printing, and specification adjustments such as color temperature, voltage range, or LED configuration. The manufacturing facility supports both small-batch trial orders and larger production runs. Minimum order quantities for custom requests are kept flexible to accommodate new brand entrants and established distributors alike. Engineering support is available for private label projects, and lead times can be discussed based on order volume and specification complexity.
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