Warranty Service

Dear Customers,

Thank you for choosing injector nozzle nuts from injectornut.com . For the protection of your consumer rights, customers who have the valid purchase invoice of injectornut.com products will enjoy a long warranty period of our injector nozzle nut . The following information is the detail introduction of warranty services.

diesel injector nozzle nut ‘s Warranty Coverage
. After customers receive the injector nozzle nuts from injectornut.com within 15 days , customer can choose to replace or repair them if there is a performance failure with conditions of no appearance damage on the injector nozzle nuts’ surface.

. Each injector nozzle nut has 6-12 months warranty period, If there are any confirmed of injector nozzle nut ’s performance problems after testing during the warranty period, customers can contact our salesmen to replace the same model or a reworked product with the same performance for free.

injector nozzle nut ‘s Problems That Out Of Warranty Coverage
.The warranty period has expired.

. injector nozzle nut failure caused by high temperature, high pressure, humidity, rain and snow, saline-alkali land, earthquake, and used in abnormal environment.

. injector nozzle nut damage caused by man-made reasons (throwing, strong magnetic field magnetization, set fire).

. injector nozzle nut failure or injector damage caused by non-injector design, technology, manufacturing, quality and other issues.

. injector nozzle nut failure due to system pressure exceeding system approved pressure..injector nozzle nut failure caused by system voltage exceeding approved voltage.

. injector nozzle nut failure caused by impurities (water, lead, aluminum powder, iron powder, sulfide) in the system fuel exceeding the standard requirements.

. injector nozzle nut failure caused by not installing according to the tightening torque specified in the vehicle engine maintenance manual (the tightening torque is too large or too small).

. injector nozzle nut failure caused by not following the installation angle specified in the injector maintenance manual.

. injector nozzle nut failure caused by not following the cleaning requirements specified in the injector maintenance maintenance manual.

. injector nozzle nut failure caused by failure to replace consumable parts as specified in the injector maintenance manual.