precise engineered with inner diameter 3/8inch, outer diameter 1in, and 5/8inch height, these replacement rubber gaskets create seals for oil systems in outdoor power equipment Essential for seasonal maintenance, engine repairs, or upgrading oil tanks assemblies in commercial grade mowers and outdoor power tools 5PCS oil tanks grommet set universally compatibility for 25 313 01, engines: CH11 CH12.5 CH13 CH14 CH15 CH410 CH430 CH450 CH5 CH6 CV460 TH16 TH18 CH26; H50 H60 H70 H80 HH40 HH60 HH70 HM70 HM80 HM100 HS40 HS50 HHM80 engine.for Z6000 Z6400 Z6600 Z6900 Z8200 Z8400 Z8600 ZS6500 ZS6700 ZTL7000 ZTL8000, ensuring a perfectly fit for 13mm/4/8inch tanks openings with durability rubber construction Made from oil resistant rubber compound, these OEM equivalent grommets withstand extreme temperatures and vibrations, long lasting for small engine applications Ideal for homeowners and professionals maintaining portable generators (3250-8000W), pressure washers (2500/2700/2900PSI), and care equipment requiring reliability oil line connection, Manufacturer: hogtnd