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50/15 Watt, 12.8/12.8 Volt T-5 Recreational Vehicle Bulb

SKU: W-H1157 | Ordering Code: H1157

In Stock
Price per Bulb
1 to 11 $6.99 Each
12 to 17 $5.99 Each
18 to 30 $5.49 Each
31 + $4.99 Each
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Eiko Brand Recreational Vehicle lamp.  50/15 Watts and 12.8/12.8 volts.  T5 size and shape, double contact bayonet base. 

  • Match number H1157 with your current lamp to get an exact match
Full Specs

Product Details



Energy Used

A rating, expressed in watts, to indicate the rate at which a lamp consumes energy. Also known as wattage value.
Energy Used
50/15 Watts


A measure of "electrical pressure" between two points. The voltage specification of an incandescent lamp is the electrical "pressure" required to drive it at its designed point. The "voltage" of a ballast (e.g. 120 V) refers to the line voltage coming from the power source and is connected to the ballast.


The end (or ends) of the lamp that fits into the socket.
Double Contact Bayonet (BA15d)

Bulb Shape

The description of the general appearance of a lamp/bulb consists of a letter(s) followed by a number. The letter indicates the shape of the bulb and the number relates to the diameter of the bulb in eighths of an inch. For example, a common household bulb is the A-19. The bulb is "A" shape and the diameter would be nineteen 8ths of an inch, or 2 3/8".
Bulb Shape

Bulb Technology

The technology implemented by the bulb, e.g. incandescent, halogen, LED
Bulb Technology

Average Rated Life (hr)

A measurement of the average length of time, between first use and the point when 50% of the lamps tested have stopped functioning, , using an operating cycle of 3 hours on, 20 minutes off.
Average Rated Life (hr)

Class and Filament

A designation used to describe the shape or structure of the filament in an incandescent or halogen light bulb. Most commonly used for specialty products like rough service and antique replica lamps.
Class and Filament

Length (in)

Also referred to as "Maximum Overall Length" (MOL). For light bulbs, it measures the length of a light bulb, from the top of the bulb to the bottom of the base or pins and is typically expressed in inches. For light fixtures and ballasts, it applies to the total horizontal length of the item.
Length (in)

Diameter (in)

Light bulbs: a measurement of a bulb's width taken at the widest point of the bulb. Fixtures: the measurement across the widest point of a circular fixture.
Diameter (in)


A General Electric brand-specific product number for an equivalent item and is provided for the purpose of cross-referencing.

Osram Sylvania

An Osram Sylvania brand-specific product number for an equivalent item and is provided for the purpose of cross-referencing.
Osram Sylvania
Q & A

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1 Question | 2 Answers
Displaying question 1
  • Q:

    Will this work for my 1157's, or what is the brightest bulb to replace my 1157's ? ?
    Asked on 7/22/2012 by Howie from Los Angeles Ca

    2 answers

    • A:

      I have used these as tail/brake lights in newer HD Cycles for a while. Newer style is a capsule type tail light. No melting or other problems. ***Note last batch of these purchased the 50W filament was the tail/running lamp and the 15W was brake light..Too dim to see difference***Don't know if these are defective or how they are being made now.

      Answered on 6/28/2015 by Eric E. from Peoples Republic of Maryland


      We would not recommend using this product as a replacement for an 1157 bulb. The H1157 is a higher wattage and will generate more heat. This will cause an issue with the socket and possibly the materials surrounding the bulb. If the vehicle or socket specifies an 1157 bulb then that is what should be used. We offer 1157's on our website and they can be found using the following link. http://www.bulbs.com/results.aspx?Ntt=1157

      Answered on 7/23/2012 by Product Support from Bulbs.com
Displaying question 1

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