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:
  1. Standard Shipping : 3-10 business days
  • 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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Debra
Charlottesville, US
★★★★★ 5
Great
Size: 32 oz, Style: 32 Fl Oz, Pattern Name: Lube
Great lube for the boat
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Reviewed in the United States on May 19, 2026
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Joshua Murray
San Leandro, US
★★★★★ 5
recommend
Size: 32 oz, Style: 32 Fl Oz, Pattern Name: Lube
great price
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Reviewed in the United States on May 22, 2026
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Christopher C.
Natrona Heights, US
★★★★★ 4
Does not come with a pump.
Size: 32 oz, Style: 32 Fl Oz, Pattern Name: Lube
The Good: Changing the fluid in the lower unit is a very easy DIY job. This can save you hundreds of dollars each year by doing it yourself. The Bad: You need a special pump to change the oil, and sometimes it comes with the gear lube. Unfortunately this product did not come with it. Luckily my neighbor had an extra one from changing the lube a different boat laying around and was able to use that. The Ugly: If you have to go get the pump, that could cost a few extra dollar but is just an extra nuisance. The pumps are interchangable but you just need to clean it between uses (DON'T MIX DIFFERENT OIL BRANDS)
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Reviewed in the United States on October 28, 2025
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Joe H.
Alexandria, US
★★★★★ 5
Works fine in outdrive
Size: 32 oz, Style: 32 Fl Oz, Pattern Name: Lube
Good gear oil. Purple dye for leak detection
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Reviewed in the United States on April 2, 2026
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luv2safari
Whiting, US
★★★★★ 5
Good Quality
Size: 32 oz, Style: 32 Fl Oz, Pattern Name: Lube
Always the best quality.
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Reviewed in the United States on March 25, 2026

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