1. Replacement Mirrors
  2. K Source
  3. Replacement Towing Mirror
  4. Fits Driver Side
  5. Electric
  6. Single Mirror
K-Source Custom Extendable Towing Mirror - Electric/Heat w Turn Signal - Textured Black - Driver

K-Source Custom Extendable Towing Mirror - Electric/Heat w Turn Signal - Textured Black - Driver

Item # KS70104T
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Our Price: $207.11
Replacement Mirrors

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KS70104T - Black K Source Replacement Towing Mirror
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Custom, power towing mirror replaces the driver's-side mirror on your vehicle. The mirror telescopes out to extend your line of sight. A turn signal is built into the mirror housing, and the heated glass clears frost and ice. Lowest Prices for the best replacement mirrors from K Source. K-Source Custom Extendable Towing Mirror - Electric/Heat w Turn Signal - Textured Black - Driver part number KS70104T can be ordered online at etrailer.com or call 800-298-8924 for expert service.
  • All Info
  • Reviews (2)
  • Q & A (10)
  • Photos
  • Why etrailer?

K Source Replacement Mirrors - KS70104T

  • Replacement Towing Mirror
  • K Source
  • Fits Driver Side
  • Electric
  • Single Mirror
  • Turn Signal
  • Heated
  • Black

Custom, power towing mirror replaces the driver's-side mirror on your vehicle. The mirror telescopes out to extend your line of sight. A turn signal is built into the mirror housing, and the heated glass clears frost and ice.


  • Extendable towing mirror replaces the factory side-view mirror on your vehicle
    • No need for snap-on or strap-on mirrors that you constantly have to put on and take off
  • Telescoping function makes it easy to see around the side of your trailer so you can safely change lanes, pass, and park
    • Pull mirror away from your vehicle to extend your line of sight
    • Push mirror back into place when you're not towing
  • Power mirror adjustment lets you change mirror face position with the factory control inside your vehicle
  • Heated mirror glass clears frost and ice and reduces fogging
  • Amber light on side of mirror flashes when turn signal is activated
  • Built-in spotter mirror reduces blind spots
  • Hinged design allows you to fold mirror up against vehicle for parking or for fitting into tight spaces
  • Durable plastic housing with textured black finish
  • Custom fit for your vehicle
  • Simple, no-drill installation
    • Same footprint and mounting points as factory mirror
    • Mirror plugs into existing electrical wiring
  • Driver's-side mirror only


  • Dual mirror face dimensions: 10" tall x 9" wide
  • Distance from edge of mirror to vehicle:
    • Extended length: 23-3/4"
    • Retracted length: 20"
  • 90-Day warranty

K-Source Towing Mirror Dimensions

Note: The power remote capability, heated glass, and turn signal of this mirror will work only if your vehicle already has those functions.

This telescoping towing mirror replaces your OEM side-view mirror and provides the extended view needed for safe towing. Now you can change lanes, merge, and pass other cars with confidence, even with a trailer in tow.

The mirror face on the custom mirror can be pulled out to give you an extended field of vision for towing. Simply push the mirror back for regular use.

The entire mirror housing conveniently folds toward your vehicle for easy parking or maneuvering in tight spaces.

70104T KSource Custom Power Heated Towing Mirror with Turn Signal - Telescoping - Textured Black - Left Hand Side

This Product Fits The Following Vehicles

Customer Reviews

K-Source Custom Extendable Towing Mirror - Electric/Heat w Turn Signal - Textured Black - Driver - KS70104T

Average Customer Rating:  5.0 out of 5 stars   (2 Customer Reviews)

Custom, power towing mirror replaces the driver's-side mirror on your vehicle. The mirror telescopes out to extend your line of sight. A turn signal is built into the mirror housing, and the heated glass clears frost and ice.

- KS70104T
2019 Toyota Tundra

I always wait for a period of time before writing a review to ensure I don't encounter problems shortly after receiving and using a product. I purchased this in the middle of December 2019, so I have been using it was several months. I purchased the outside mirror to replace a broken one on my Toyota Tundra. Received the mirror in a timely manner, and it met its description perfectly. Although I perform some repairs on my vehicles, by no means am I a mechanic or body repairman, I was able to remove the old mirror and install the new one in about 30 minutes. In the future I will not hesitate to order from etrailer for additional needs. 766524

- KS70104T

Great product and easy install. Mirrors look great 431395


Ask the Experts about this K Source Replacement Mirrors

  • Do the K-Source Extendable Towing Mirror Have the Blind Spot Detection System Toyota Tundra
    I spoke to my contact at K-Source and they informed me that the K-Source Custom Extendable Towing Mirror part # KS70104T does not incorporate the use of the factory blind spot detection system. They will still work for you and retain all other factory features but you will lose the blind spot detection system. For a pair of these side mirrors, you will want part # KS70103-04T. We also have them available in chrome using part # KS70131-32T. Unfortunately, the K-Source mirrors are the...
    view full answer...
  • Do Custom Towing Mirrors for a 2017 Toyota Tundra have Blind Spot Sensors
    The replacement towing mirrors that we have for your 2017 Toyota Tundra, # KS70131-32T and # KS70103-04T, have electric operation, heat, and turn signal functions but they do not have blind spot monitors so that feature would be lost. Depending on the location of the blind spot sensors you may be able to use universal towing mirrors # KS3990 and not lose that function. I have linked a video review of these mirrors for you.
    view full answer...
  • Does the K-source Mirror KS70104T Have A Reverse Light Function
    The K-Source Custom Extendable mirror part # KS70104T for your 2012 Toyota Tundra is designed with turn and running light signals only. It also includes the heated feature of the original mirror. The K-source mirror does not retain the reverse light function of the original mirror. Since the mirror plugs into the existing electric harness with a plug at the end in the vehicle they are not designed to accept the reverse light wire.
    view full answer...
  • Is There a Difference Between K-Source Towing Mirrors for 2016 Toyota Tundra?
    The only difference between the towing mirrors is that K-Source Custom Extendable Towing Mirror # KS70104T is for the driver's side of a 2016 Toyota Tundra while # KS70103T is for the passenger's side and # KS70103-04T allows you to purchase both at the same time as opposed to individually. These mirrors are a conformed fit for your 2016 Tundra and are power mirrors with heated glass and turn signals on the sides. I've added a link to a video review of the mirrors for you to take...
    view full answer...
  • How to Install Replacement Heated Mirror # KS70104T on 2012 Toyota Tundra
    The part you referenced, # KS70104T from K-Source, is a replacement driver-side mirror for the Tundra. This mirror has heat, power adjustment and turn signal functions. We also offer a matching passenger side mirror, part # KS70103T, as well as the two mirrors as a set, part # KS70103-04T, which offers some cost savings. Please note that the heat, power and turn signal functions must be already present on your vehicle in order to use these functions on the K-Source mirrors. You cannot...
    view full answer...
  • Will Power Adjust and Heated Features on K-Source Tow Mirrors Work on a 2008 Toyota Tundra
    The replacement options that we have from K-Source include the following: Textured Black Driver Side - # KS70104T Passenger Side - # KS70103T Both - # KS70103-04T Black/Chrome Driver Side - # KS70132T Passenger Side - # KS70131T Both - # KS70131-32T These have power adjustment and heating features as well as turn signals (if your 2008 Toyota Tundra mirrors have turn signals). Even though they don't have the auto dimming or power folding they will still work for your application....
    view full answer...
  • Can Turn Signal Function be Added to 2012 Toyota Tundra K-Source Custom Towing Mirrors
    K-Source towing mirror # KS70104T, and the set, # KS70103-04T, will retain the heat and power operation functions of the stock mirrors on your 2012 Toyota Tundra but you would not gain the turn signal function since the stock mirrors do not have that feature. The only way that you could get it to work for sure would be to tap into a turn signal circuit on the truck. But it theoretically could be done. I have linked a video review of the mirror set for you.
    view full answer...
  • Does K-Source Extendable Towing Mirror, Part # KS70104T, Fit 2013 Toyota Tundra Double Cab SR5
    The K-Source Extendable Driver-Side Towing Mirror, Part # KS70104T, is specified to fit Toyota Tundra models years 2008 thru 2012. However, my contact at K-Source confirmed it will fit the 2013 Tundra SR5 as long as your stock mirror also has turn signals. You indicate your OEM mirrors have heat and power functions only. If they also have built-in turn signals you can use this replacement mirror. Please note that mirror extension and folding functions are both manual, not powered. The...
    view full answer...
  • Extendable Towing Mirror Recommendation for a 2013 Toyota Tundra
    For a replacement towing mirror that can extend for an increased field of vision I would recommend the K-Source Towing Mirrors part # KS70104T that you referenced. The telescoping arm extends the mirror out from your truck by almost 4" for an expanded field of vision. This heated power mirror also has a built-in turn signal. For the passenger side mirror you would want the part # KS70103T. Or to order them as a pair you would want # KS70103-04T. I attached a review video for you to...
    view full answer...
  • Will K-Source Custom Fit Towing Mirrors Fit a 2012 Toyota Tundra CrewMax Platinum
    The mirrors for the 2012 Toyota Tundra, see link, will fit in the same footprint of the factory mirrors on your CrewMax Platinum. The driver side mirror that you have referenced, # KS70104T, has turn signal, electric adjustment, and heat features. These features will only work if the factory mirrors had the same features. The matching passenger side mirror is # KS70103T.
    view full answer...

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Info for this part was:

Expert Research:
Michael H
Expert Research:
Adam R
Installed by:
Cole B
Updated by:
Mary E

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