Radiator Cap fits John Deere 950 650 750 850 900 950 1050 1250 1450 1650 CH18207 fits Yanmar YM1500 YM1610 YM1700 YM2000 YM2610 YM3110 121120-44590

Radiator cap rated at 13 PSI for John Deere compact tractors and the Yanmar-powered equipment they share a platform with. The 650 through 1650 series used Yanmar diesel engines under the John Deere badge through the 1970s and into the mid-1980s, which is why one cap crosses to both John Deere and Yanmar part numbers. The 13 PSI rating is lower than what's common on full-size tractors, and substituting a higher-rated cap can stress hoses and tank seams that weren't designed for it. A worn cap that doesn't hold rated pressure is worth checking before chasing a coolant loss problem further.