SKU: 85513547358

MTH # 50-1912 ( Protosound 3.0 ) Diesel Locomotive Upgrade Kit ( Sealed )

Sale price$149.40 Regular price$166.00
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Description

MTH # 50-1912 ( Protosound 3.0 ) Diesel Locomotive Upgrade Kit ( Sealed )Proto Sound 3. 0 Diesel Locomotive Upgrade Kit Note: If you are upgrading a PS2 engine with Operating Pantographs then order 50 1911.. FEATURES Speed Control Variable Intensity Diesel Exhaust Smoke DCS Command Control and all the features that come with the latest command control system. (2) Remotely controlled Proto couplers PS3 Headlight control 28 F Function DCC Features Now operators can enjoy Proto Sound 3. 0 in older M. T. H. locomotives

Proto-Sound 3.0 Diesel Locomotive Upgrade Kit

Note: If you are upgrading a PS2 engine with Operating Pantographs then order 50-1911..

FEATURES

  • Speed Control
  • Variable Intensity Diesel Exhaust Smoke
  • DCS Command Control and all the features that come with the latest command control system.
  • (2) Remotely controlled Proto-couplers
  • PS3 Headlight control
  • 28 F-Function DCC Features

Now operators can enjoy Proto-Sound 3.0 in older M.T.H. locomotives outfitted with M.T.H.'s original Proto-Sound or Proto-Sound 2.0. Other manufacturer's O Gauge and G Gauge locomotives may also be candidates for a Proto-Sound 3.0 upgrade kit (see the FAQ Section to determine if non-M.T.H. locomotives are upgrade candidates).

Each kit consists of a Proto-Sound 3.0 circuit board, a coil wound Proto-Coupler, various wire harnesses, new speaker, new mounting brackets, and headlight and backup light bulbs. The kits are warranted for 90 days when installed by a participating M.T.H. Authorized Service Center. Each kit will require programming of a sound set prior to operation. The sound sets can be downloaded from the M.T.H. website at no charge but will require the DCS system in order to be uploaded into the upgraded locomotive.

Virtually all features found in factory equipped Proto-Sound 3.0 locomotives are included in the Proto-Sound 3.0 Upgrade Kit. These include conventional and command mode Proto Speed Control, full Ps3 digital sound effects, DCS command features, conventional and command mode Proto-Coupler operation, conventional and command mode, synchronized smoke on locomotives equipped with fan driven M.T.H. smoke units, battery-less backup power and operating headlight control.

M.T.H. strongly encourages consumers to utilize the nationwide network of M.T.H. Authorized Service Centers for installation of the Proto-Sound 3.0 upgrade kit. Upgrading a locomotive to Proto-Sound 3.0 may require significant rewiring of the locomotive, installation of new mounting brackets, soldering and careful wire management to prevent pinched wires that could damage the circuit boards. Consult a participating M.T.H. Authorized Service Center for installation costs. Cost are estimated to range from $150.00 to $200.00 depending on the locomotive.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
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  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 85513547358

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Jackster
Waukegan, US
★★★★★ 5
Recommend for very heavy chewers
Color: Grilled color
My aggressive chewers love these! It’s been a few weeks and still in one piece and man they chew them for hours on end.
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Reviewed in the United States on May 26, 2026
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Nicholas Kiefer
Grantham, US
★★★★★ 5
Amazingly great product!
Color: Grilled color
I’m not just saying this, ok, this is not hyperbole: this is THE best nylon bone for chewing that I have ever purchased. And you get TWO of them for relatively less expensive than most chew toys give you one! I have 2 golden retrievers, and if you know goldens, you know that they are some of the most relentless and powerful chewers around. So I can’t give them almost any toy other than rubber stuff or it will be destroyed in a period of time that doesn’t make it worth it. One of them even figured out how to destroy a supposedly indestructible toy made out of kevlar! She was able to get into it through the seam, which is not kevlar ha ha. Anyway, I digress; I never even considered nylon chews because they suck! Usually. Usually my dogs in the past have lost interest with them in less than a day. I took a chance on these mainly because of the novel shapes, the fact that they give you two, and the low price. Both my goldens LOVE these! Not just for one day, but going on weeks now! I don’t know if it’s the flavor or what, but I will see them gnawing on one of them at some point every day. And they CAN’T destroy them (I knew nylon was good for that, but it was the “who cares” attitude of my previous dogs toward nylon that kept me away). Both the “ribs” and “steak” (quite clever) are a bit worn on the edges now, but they look like they will be around for years. You can’t go wrong with this product (unless for some reason your dog does not like the flavor, but the flavor seems to be what draws my dogs to them). I highly recommend this (these) as the most cost-effective chew toy I’ve ever purchased.
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Reviewed in the United States on November 1, 2025
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Verified Purchase
Sue Roob
Birmingham, US
★★★★★ 4
Great for larger dogs
Color: Grilled color
I think they were heavy duty and durable, but they were too heavy for my dog. The seller was excellent though!
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Reviewed in the United States on May 31, 2026
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Verified Purchase
Rodney
San Leandro, US
★★★★★ 5
Dog chew toys
Color: Grilled color
Smaller than expected but dogs liked it.
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Reviewed in the United States on May 28, 2026
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Shulamit Saeger
Cuba, US
★★★★★ 3
It ok but a bit small for my golden and I have to supervise him.
Color: Grilled color
I don't recommend. Too big for my small dog. Too small for my big dog. They have similar bones but these just seem odd. ** WELL actually after some time they both will chew on them, especially my golden. Do be careful watch the dog while chewing. My home health care aid thought they were real. they are holding up well.
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Reviewed in the United States on December 31, 2025

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