Seal Spacers Inner Diameter: 8mm / 0., 31; They form a seal to prevent outside air from leaking into the injectors or fuel vapours from escaping. Seal Spacers Thickness: 3mm / 0., 12; O-Rings Outside Diameter: 10mm / 0., 39; They provide a seal to ensure no outside air leaks into the injectors or fuel vapours leak out. O-Rings Inner Diameter: 7mm / 0., 28; 91301-PLC-000 4pcs Fuel Injector O-Ring Set forHONDA ACCORD CIVIC JADE FIT CRV Acura Black Seal Gasket Fuel Injector Repair Kit Function: Injector seals and O-rings help provide vacuum pressure for injectors to function properly in the engine of the vehicle. Please Attention: This is non-OEM product, accessory ONLY! OEM quality Honda fuel injector o-ring seal kit. Kit contents include upper fuel rail o-rings, upper grommets, lower intake seals Material: NBR Rubber, Metal, Plastic Pintle Cap Length: 12mm / 0., 47; Injector seals and O-rings aid to create vacuum pressure so that injectors may work correctly in the vehicle's engine. Nbr O Ring Kit Fuel Injectors For Honda Accord Unique Bargains Fuel Injector Seal O Ring Car O-Ring Rebuild Repair Kit For Honda Civic CRV Keihin Nbr Rubber 4 Sets EVO Car & Truck Fuel Injectors Fuel Injector O Ring Kit Seal Spacers Outside Diameter: 14mm / 0., 55; Please confirm the model, displacement and year of your car before purchasing. Compatibility: for Honda Civic CRV KEIHIN Helpful: [REPLACE PART NO. Handy: [SHIP CONTENT] 4 Pcs O-rings, 4 Pcs Pintle Caps, 8 Pcs Seal Spacers, 4 Pcs Filter Baskets Product Dimension: Color: Black, Red