platform O120 began. In 1968 the O120 was replaced by the model O140 with a 130-hp engine. With the L 608D, in 1970 was made in the Virrey del Pino factory the bus version: the LO 608D (until mid-1980s) and the LFu 608 variant. In 1977, mass production of chassis for buses and buses with power steering began. Manufacturing of the LO914 and the O170, the successor to the O140 model with the OM 352 A supercharged engine with 156 hp and reinforced axles and suspension, also started. In 1979, the company began the production of the bus chassis, front model, OC 1214, using the OM 352 engine like the LO 1114 bus. In 1981, with some success, the OH 1419 bus was introduced and made in Argentina. In 1982, the company built the first bus powered by compressed natural gas (CNG) in Argentina and launched two new models: the front-engine OF 1114 (not available in Argentina, just for export markets only, like Perú) and the OF 1214, with a front engine. Also introduced was a new line of vehicles for urban transport of passengers, automatic transmission for the LO1114, the new front chassis and bus chassis rear engine OH 1314, with and without automatic transmission. Series production of the LO 1114 with automatic gearbox began and joined the air brake system on the Mercedes-Benz model LO 1114. In 1987, Mercedes-Benz Argentina revolutionized the public transportation of passengers by launching the new line of rear-engined front-side bus (the "OH"), which replaced traditional front motor buses. With also the OH 1318 and OH 1418. For the first years of the 1990s, arrives the buses of the O-series likes the O 373 RSD (324 units built), the O 374 RSD (72 units built) and the O 400 RSD (61 units built) for the long-distance bus routes and also the OH 1522 (333 units built) and the OH 1526 (98 units built). All made in the factory of González Catán until 1995. In 1994, start the assembly of the OF 1620 with the 200HP diesel engine with 6606 units made and large used in the provinces like Santa Fe, Jujuy and others. For the urban buses, the OHL series added with the production line in 1990 with this models: OH/OHL 1316, OH/OHL 1320 and the OH/OHL 1420 with success in the urban transport. In 1997, the Argentinian market receive the local-made OH 1521L-Sb,