Bring big power to your HO railroad with the WalthersMainline SD75I! Built from 1996 to 1999 with most still in service, this later variation of the SD70-series introduced the new Isolated or Whisper Cab (noted by the ′I′ in the model designation), designed to reduce noise and vibration, and easily identified by the visible seam along the nose. Features of the model include: All-New Tooling! One time run of these roadnumbers, order now - limited quantity available! Correct North American Safety Cab per prototype Flush radiators per early production units Correct HTCR-1a or HTCR-1b trucks per prototype Brass Nathan K5 air horn Treadplate detail on walkways Minimum radius 18′ (22′ or larger recommended) Fully assembled LED Lighting includes: High or low headlight per prototype Improved, working front ditch lights Constant and directional lights 21-Pin DCC plug Same powerful drive as WalthersProto(R) locos featuring: 5-pole skew-wound motor 14:1 gear ratio Helical-cut gears for quiet operation and easy multiple unit operation All-wheel drive and electrical pickup Dual machined brass flywheels Heavy die cast metal chassis Cab interior 5000-gallon fuel tank w/road specific details Standard bell on conductor′s side Molded drill starter points for grab irons - easily added with SD70-Series Diesel Detail Kit (910-261, sold separately) Correct size RP-25 metal wheels Proto MAX(TM) magnetic metal knuckle couplers PLEASE NOTE: When operating Walthers-branded DCC-equipped locomotives in DC mode, do not use power packs that exceed an 18V rating. This includes MRC 1300-series power packs which have known issues with our decoders. Road-specific details on this model include: Low headlight HTCR-1a trucks Plain nose door, no window