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Auxbeam B21 Series 4257 Amber LED 4257NA Bulbs Built in Resistor Error Free
✅ In stock
F
Grade
Price verified Sep 21, 2026 2:50 PM · Prices & availability subject to change
Is This a Good Price on Amazon?
💤 Not a Deal- 💤Verdict: Not a Deal. Price is at or above historical norms. Best to wait for a sale.
- ➡️Pricing has held fairly steady, with no strong push in either direction.
How We Scored This Deal
Price Competitiveness
0/28
Recent Value
0/22
Market Standing
0/20
Deal Strength
0/20
Momentum
0/10
📝 Product Overview
🏪 Sold by
AUXPOWER
📦 Fulfillment
Fulfilled by Amazon
🚚 Shipping
Free Shipping
Product Details
✓Specific for Ford Vehicle: Directly fit for 2022/2023/2025 ford maverick front turn signal light, 2018-2020 f150 rear turn signal light, 2021-2022 f150 front/rear turn signal light, 2020-2022 f250/f350/f450/f550 super duty rear turn signal light and 2023 f-350 front turn signal light. Fit socket 4257 4257NA 4257NALL 4257NAK 4257A 4257AK, etc.
✓CANBUS ERROR FREE: Super compatible for 99% Vehicles. No hyper flash, no errors, no warning. With built-in CANBUS system, these 4257 amber bulbs can directly alleviate decoding problems without trouble to prepare external resistors. Note: Auxbeam offers 1-year warranty. For some super few sensitive models or if you replace the rear turn signal for Pickup/Truck/Lorry, extra resistors may be needed or message us to get
✓600% EXTREMELY BRIGHT: Sequencing 36PCs Upgraded high brightness 3030 SMD chips precisely around each 4257 led bulb, 28W per bulb, High Power and 600% brighter, providing 3500K Amber Yellow light for turn signals. Stronger light penetration output for 40% more visibility than ordinary leds. Instant-on response without warm-up time, 360° illumination without dark spot, brighter and safer when turning
✓DUAL BRIGHTNESS: This 4257 amber led bulb with resistor supports dim mode for only parking light or daytime running light (DRL) and bright mode for only turn signal light. When used as turn signal bulbs, the 4257 led bulb with built in resistor flash "amber-off-amber-off", making it easier to see from a distance
✓4-LAYER COOLING SYSTEM: IP68 waterproof and dustproof. The built-in stable current IC driver avoids digital or VHF radio signal interference. The latest cooling system - 12, 000RPM silent fan + Copper cooling ring + 16PCs heat sinks + 6063 aviation aluminum lamp body directly doubles heat dissipation, ensuring longer lifespan up to 60, 000 hours
⚙️ Specifications
Brand
Auxbeam
Light Source Type
LED
Color Temperature
3500 Kelvin
Color
Amber
Fit Type
Universal Fit
Item Highlight
Anti hyper flash, 600% bright, front turn signal light, blinker bulbs for f150 f250 f350 f450 f550
Brand Name
Auxbeam
Manufacturer Part Number
XD000733
Auto Part Position
Front, Rear
Operating Life
60000 hours
Manufacturer
Auxbeam
