Note: these oilers have been generous with oil output. I'm not saying they are high output levels, but many are darn good pumpers..
Parts Name: Oil pump Oiler Kit
Fits: STIHL 066 MS650 MS660 MS 650 660 Chainsaw
Replace OEM: 1122 640 3205
Bluesaws Oil pump WITH WORM GEAR For STHL 066 MS650 MS660 MS 650 660 OEM# 1122 640 3205