General Pump / Interpump (GP) Genuine OEM part (K173) KIT 173 Seal set W/ Brass Retainer for General TSF2219 and TSF2221 Series 66 Pumps. Note: This kit only services ONE cylinder! (22mm) 3 Kits required for complete repair. (See our Kit 172 for complete seal kit without the brass retainers for all 3 cylinders). (22mm).