I have a 2014 ford f150 that says it takes 3157nak lcp bulbs in the front park / turn lamps..can't find that exact pn# , will these work ?

-3157 is the bulb #.-NA stands for Natural Amber.-K stands for Krypton Gas which is used to make the bulb a LL(Long Life) bulb.-LCP standard for "Liquid Crystal Polymer" - The "LCP" product is made using a special high heat resistant base making it a good solution for small lamp reflectors that may generate high temperatures. The plastic base on the regular 3157 can withstand temperatures of up to 120 C. The "LCP" base can withstand temperatures of up to 230C.Everything this bulb offers is what you need except I am not 100% sure yet if this bulb is manufactured with the LCP base. If Ford specifies a LCP base you "need" to make sure you get the LCP base. Cars around 10 years ago started having issues where the lenses, wiring, etc... were melting because the bulbs were getting hot and this was all due to the base initially melting from high temperatures. Sylvania helped fix this by coming out with the LCP base.I currently have a message into my Sylvania rep to find out if these bulbs use the LCP base. Years ago the base had to be a gray colored base to qualify but I believe they started making them in black now as well so I wanted to double check with Sylvania before giving you an exact answer if this will work for your vehicle or not. I will let you know asap.Thanks for your patience and understanding,Kevin O'DonnellO'Donnell's Auto Parts, LLC

So I have tried to find online what bulb my 2010 Mercury Mariner takes, but have had no luck. Does anyone know a source to check?

The best place to check is NAPA or another auto parts store the prices are the same except there's no shipping. They have the part you need in stock too right in the aisle. I had to go there after buying this and finding out it's the blinker not side marker light.

what is natural amber?

I think it's the color of the shell. Supposed to be better for the clarity of the blinker.

Will it work for 2007 dodge caliber front turn signal light?

Yes, It will work in the Front & Rear Turn Signal and Side Marker in a 2007 Dodge Caliber.

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Description

🚗 Light up your drive with confidence and style!

OEM TRUSTED QUALITY - Backed by SYLVANIA’s century-long legacy as an Original Equipment Manufacturer, ensuring reliable, road-legal performance.
VERSATILE FIT USE - Designed for parking, side marker, and turn signal applications with easy compatibility checks via the desertcart part finder.
BRILLIANT AMBER GLOW - Enhance your vehicle’s visibility with a vibrant 3200K amber light that commands attention on the road.
LONG LASTING DURABILITY - Engineered with a robust filament and proprietary gas mix to outlast standard bulbs, reducing replacements and hassle.
PERFECT PAIR REPLACEMENT - Always replace in pairs to maintain balanced lighting and avoid unexpected failures—because your safety deserves symmetry.

The SYLVANIA 3157NA Long Life Mini Bulb delivers a powerful 1400 lumen amber light at 3200K, engineered for durability and longevity with a robust filament and proprietary gas mixture. Ideal for parking, side marker, and turn signal applications, these bulbs are designed for easy installation and optimal safety. Trusted by professionals and backed by SYLVANIA’s OEM heritage, this 2-pack ensures balanced, reliable lighting that keeps you visible and stylish on the road.

Specifications

Brand	SYLVANIA
Light Type	automotive-exterior-headlight-bulbs, automotive-exterior-turn-signal-light-bulbs
Special Feature	Dimmable
Wattage	28.54 watts
Bulb Shape Size	A19
Bulb Base	E26
Incandescent Equivalent Wattage	28.54 Watts
Specific Uses For Product	Headlight
Light Color	Amber
Voltage	120 Volts
Unit Count	2.0 Count
Color Temperature	3200 Kelvin
Number of Items	1
Brightness	1400 Lumen
Model Name	Dreamfarm Supoon
Indoor/Outdoor Usage	Indoor, Outdoor
Power Source	Electrical
Item Package Quantity	1
Light Source Type	Incandescent
Control Method	App
White Brightness	302 Lumens
Global Trade Identification Number	00046135345692, 00046135381676
Manufacturer	SYLVANIA
UPC	046135381676 046135345692
Item Weight	0.704 ounces
Product Dimensions	3 x 1 x 4 inches
Item model number	3157NALL.BP2
Is Discontinued By Manufacturer	No
Exterior	malleable
Manufacturer Part Number	3157NALL.BP2
Position	Right
Special Features	Dimmable

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