I've got a Perkins 4-108 running the 12k generator in my Wanderlodge. Don't know it that engine is approaching it's limit at 12k. The 4-108 powers a lot of relatively large sailboats so I suspect it could deliver more electricity if necessary.

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1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13