Pricing Quantity = 1 set of o-rings = top/bottom for 1 injector 

(i.e. 8 injectors will need 8 sets of o-rings)

Fuel Injector O-ring Kits contain the necessary seals to service a fuel injector SEP OEM replacements for your vehicle's original components. These seals help provide liquid-tight connections between the fuel injector and related components. Fuel injector o-ring kits help to provide the same performance, durability, and service life you expect from a new injector. It is recommended that you also consider servicing your fuel injectors, which will include o-ring replacements as well as serviceable filter replacement. https://www.snakeeaterperformance.com/products/injector-service-flow-testing