Onan 4.9 CCK Generator Air Filter Part Numbers

Started by MSN Member, November 11, 2008, 10:50 PM

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Sent: 5/1/2007

My Onan 4.0CCK, made in 1974, has the newer dry style round air filter mounted above the generator end. The old one was a Nelson 83656A, the original Onan part #140-0495 cost $7.26, but I went to NAPA and bought their #2371 which cost $9.95. The 440 engine air cleaner was a Fram CA324A which crossed to NAPA 2116 for $7.29.  The NAPA filters do look sturdier with more pleats. Neither Autozone nor Kragen has much of an instore selection of round air filters anymore