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O Scale - 4-6-6-4 - Challenger - RS 11 - SD 90 - SD 90MAC

O Scale Model TrainsO Scale Model Trains

O Scale (1:48) is one the most popular and oldest scales in the industry, featuring one of the largest varieties of high quality trains and accessories in the market. O scale trains are larger than HO scale trains and have lots of neat features and quality detail. Popular maufacturers of O scale trains include Lionel, MTH, Atlas, and Williams, among many more.

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26 Items

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  1. MTH 20-21631-1 O RS-11 High Hood Diesel Engine w/Proto-Sound 3.0 - Louisville & Nashville #955
    MTH 20-21631-1 O RS-11 High Hood Diesel Engine w/Proto-Sound 3.0 - Louisville & Nashville #955
    Number 20-21631-1
    Manufacturer MTH Trains
    Scale O
    $509.99
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  2. MTH 20-21633-1 O RS-11 High Hood Diesel Engine w/Proto-Sound 3.0 - Maine Central #801
    MTH 20-21633-1 O RS-11 High Hood Diesel Engine w/Proto-Sound 3.0 - Maine Central #801
    Number 20-21633-1
    Manufacturer MTH Trains
    Scale O
    $509.99
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  3. MTH 20-21634-1 O RS-11 High Hood Diesel Engine w/Proto-Sound 3.0 - Maine Central #802
    MTH 20-21634-1 O RS-11 High Hood Diesel Engine w/Proto-Sound 3.0 - Maine Central #802
    Number 20-21634-1
    Manufacturer MTH Trains
    Scale O
    $509.99
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  4. MTH 20-21635-1 O RS-11 High Hood Diesel Engine w/Proto-Sound 3.0 - Pennsylvania #8617
    MTH 20-21635-1 O RS-11 High Hood Diesel Engine w/Proto-Sound 3.0 - Pennsylvania #8617
    Number 20-21635-1
    Manufacturer MTH Trains
    Scale O
    $509.99
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  5. MTH 20-21636-1 O RS-11 High Hood Diesel Engine w/Proto-Sound 3.0 - Pennsylvania #8624
    MTH 20-21636-1 O RS-11 High Hood Diesel Engine w/Proto-Sound 3.0 - Pennsylvania #8624
    Number 20-21636-1
    Manufacturer MTH Trains
    Scale O
    $509.99
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  6. MTH 20-21637-1 O RS-11 High Hood Diesel Engine w/Proto-Sound 3.0 - Southern Pacific #5853
    MTH 20-21637-1 O RS-11 High Hood Diesel Engine w/Proto-Sound 3.0 - Southern Pacific #5853
    Number 20-21637-1
    Manufacturer MTH Trains
    Scale O
    $509.99
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  7. MTH 20-21638-1 O RS-11 High Hood Diesel Engine w/Proto-Sound 3.0 - Southern Pacific #5858
    MTH 20-21638-1 O RS-11 High Hood Diesel Engine w/Proto-Sound 3.0 - Southern Pacific #5858
    Number 20-21638-1
    Manufacturer MTH Trains
    Scale O
    $509.99
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  8. MTH 20-3890-1 O 4-6-6-4 Challenger Steam Engine w/Proto-Sound 3.0 (Hi-rail Wheels) - Clinchfield (Coal Tender) Cab No. 672
    MTH 20-3890-1 O 4-6-6-4 Challenger Steam Engine w/Proto-Sound 3.0 (Hi-rail Wheels) - Clinchfield (Coal Tender) Cab No. 672
    Number 20-3890-1
    Manufacturer MTH Trains
    Scale O
    $1,659.99
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  9. MTH 20-3891-1 O 4-6-6-4 Challenger Steam Engine w/Proto-Sound 3.0 (Hi-rail Wheels) - Denver & Rio Grande (Coal Tender) Cab No. 3805
    MTH 20-3891-1 O 4-6-6-4 Challenger Steam Engine w/Proto-Sound 3.0 (Hi-rail Wheels) - Denver & Rio Grande (Coal Tender) Cab No. 3805
    Number 20-3891-1
    Manufacturer MTH Trains
    Scale O
    $1,659.99
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  10. MTH 20-3892-1 O 4-6-6-4 Challenger Steam Engine w/Proto-Sound 3.0 (Hi-rail Wheels) - Union Pacific (Black - Coal Tender) Cab No. 3975
    MTH 20-3892-1 O 4-6-6-4 Challenger Steam Engine w/Proto-Sound 3.0 (Hi-rail Wheels) - Union Pacific (Black - Coal Tender) Cab No. 3975
    Number 20-3892-1
    Manufacturer MTH Trains
    Scale O
    $1,659.99
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  11. MTH 20-3893-1 O 4-6-6-4 Challenger Steam Engine w/Proto-Sound 3.0 (Hi-rail Wheels) - Union Pacific (Two-Tone Gray w/Silver Stripes - Coal Tender) Cab No. 3999
    MTH 20-3893-1 O 4-6-6-4 Challenger Steam Engine w/Proto-Sound 3.0 (Hi-rail Wheels) - Union Pacific (Two-Tone Gray w/Silver Stripes - Coal Tender) Cab No. 3999
    Number 20-3893-1
    Manufacturer MTH Trains
    Scale O
    $1,659.99
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  12. MTH 20-3894-1 O 4-6-6-4 Challenger Steam Engine w/Proto-Sound 3.0 (Hi-rail Wheels) - Union Pacific (Two-Tone Gray w/Yellow Stripes - Coal Tender) Cab No. 3989
    MTH 20-3894-1 O 4-6-6-4 Challenger Steam Engine w/Proto-Sound 3.0 (Hi-rail Wheels) - Union Pacific (Two-Tone Gray w/Yellow Stripes - Coal Tender) Cab No. 3989
    Number 20-3894-1
    Manufacturer MTH Trains
    Scale O
    $1,659.99
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  13. MTH 20-3895-1 O 4-6-6-4 Challenger Steam Engine w/Proto-Sound 3.0 (Hi-rail Wheels) - Union Pacific (Black - Oil Tender) Cab No. 3985
    MTH 20-3895-1 O 4-6-6-4 Challenger Steam Engine w/Proto-Sound 3.0 (Hi-rail Wheels) - Union Pacific (Black - Oil Tender) Cab No. 3985
    Number 20-3895-1
    Manufacturer MTH Trains
    Scale O
    $1,659.99
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  14. MTH 20-3896-1 O 4-6-6-4 Challenger Steam Engine w/Proto-Sound 3.0 (Hi-rail Wheels) - Union Pacific (Two-Tone Gray w/Silver Stripes - Oil Tender) Cab No. 3979
    MTH 20-3896-1 O 4-6-6-4 Challenger Steam Engine w/Proto-Sound 3.0 (Hi-rail Wheels) - Union Pacific (Two-Tone Gray w/Silver Stripes - Oil Tender) Cab No. 3979
    Number 20-3896-1
    Manufacturer MTH Trains
    Scale O
    $1,659.99
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  15. MTH 20-3897-1 O 4-6-6-4 Challenger Steam Engine w/Proto-Sound 3.0 (Hi-rail Wheels) - Union Pacific (Two-Tone Gray w/Yellow Stripes - Oil Tender) Cab No. 3977
    MTH 20-3897-1 O 4-6-6-4 Challenger Steam Engine w/Proto-Sound 3.0 (Hi-rail Wheels) - Union Pacific (Two-Tone Gray w/Yellow Stripes - Oil Tender) Cab No. 3977
    Number 20-3897-1
    Manufacturer MTH Trains
    Scale O
    $1,659.99
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  16. Lionel 2331240 O Union Pacific Legacy Brass Hybrid Challenger #3834 "Greyhound"
    Lionel 2331240 O Union Pacific Legacy Brass Hybrid Challenger #3834 "Greyhound"
    Number 2331240
    Manufacturer Lionel Trains
    Scale O
    $2,499.99
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  17. Lionel 2331211 O Union Pacific Legacy Brass Hybrid Challenger #3836
    Lionel 2331211 O Union Pacific Legacy Brass Hybrid Challenger #3836
    Number 2331211
    Manufacturer Lionel Trains
    Scale O
    $2,499.99
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  18. Lionel 2331231 O Union Pacific Legacy Brass Hybrid Challenger #3815
    Lionel 2331231 O Union Pacific Legacy Brass Hybrid Challenger #3815
    Number 2331231
    Manufacturer Lionel Trains
    Scale O
    $2,499.99
    Out of stock
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  19. Lionel 2331220 O Union Pacific Legacy Brass Hybrid Challenger #3835 Challenger Scheme
    Lionel 2331220 O Union Pacific Legacy Brass Hybrid Challenger #3835 Challenger Scheme
    Number 2331220
    Manufacturer Lionel Trains
    Scale O
    $2,599.99
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  20. Lionel 2233611 O CP Veterans #7021 - Legacy SD90MAC
    Lionel 2233611 O CP Veterans #7021 - Legacy SD90MAC
    Number 2233611
    Manufacturer Lionel Trains
    Scale O
    $584.99
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  21. Lionel 2233621 O CP Veterans #7022 - Legacy SD90MAC
    Lionel 2233621 O CP Veterans #7022 - Legacy SD90MAC
    Number 2233621
    Manufacturer Lionel Trains
    Scale O
    $584.99
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  22. Lionel 2233631 O CP Veterans #7023 - Legacy SD90MAC
    Lionel 2233631 O CP Veterans #7023 - Legacy SD90MAC
    Number 2233631
    Manufacturer Lionel Trains
    Scale O
    $584.99
    Out of stock
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  23. Lionel 2233641 O CP Veterans #6644 - Legacy SD90MAC
    Lionel 2233641 O CP Veterans #6644 - Legacy SD90MAC
    Number 2233641
    Manufacturer Lionel Trains
    Scale O
    $584.99
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  24. Lionel 2233660 O EMD #8204 - Legacy SD90MAC
    Lionel 2233660 O EMD #8204 - Legacy SD90MAC
    Number 2233660
    Manufacturer Lionel Trains
    Scale O
    $584.99
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  25. Lionel 2233649 O CP Veterans Non-PWD #6644 - Legacy SD90MAC
    Lionel 2233649 O CP Veterans Non-PWD #6644 - Legacy SD90MAC
    Number 2233649
    Manufacturer Lionel Trains
    Scale O
    $359.99
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  26. MTH 20-3900-1 O Union Pacific 4-6-6-4 Challenger Cab #3985 with Tender (TrainWorld Exclusive)
    MTH 20-3900-1 O Union Pacific 4-6-6-4 Challenger Cab #3985 with Tender (TrainWorld Exclusive)
    Number 20-3900-1
    Manufacturer MTH Trains
    Scale O
    $1,699.99
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    4-6-6-4 - Challenger
  2. Engine Style
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