Warranty Service

Dear Customers,

Thank you for choosing fuel pump plungers from dieselpumpplunger.com . For the protection of your consumer rights, customers who have the valid purchase invoice of dieselpumpplunger.com products will enjoy a long warranty period of our fuel pump plunger. The following information is the detail introduction of warranty services.



 diesel fuel pump plunger’s Warranty Coverage
. After customers receive the fuel pump plungers from dieselpumpplunger.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 fuel pump plungers’ surface.

. Each fuel pump plunger has 6-12 months warranty period, If there are any confirmed of fuel pump plunger’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.



fuel pump plunger’s Problems That Out Of Warranty Coverage
.The warranty period has expired.

. fuel pump plunger failure caused by high temperature, high pressure, humidity, rain and snow, saline-alkali land, earthquake, and used in abnormal environment.

. fuel pump plunger damage caused by man-made reasons (throwing, strong magnetic field magnetization, set fire).

. fuel pump plunger failure or fuel pump plunger damage caused by non-fuel pump plunger design, technology, manufacturing, quality and other issues.

. fuel pump plunger failure due to system pressure exceeding system approved pressure..fuel pump plunger failure caused by system voltage exceeding approved voltage.

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

. fuel pump plunger 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).

. fuel pump plunger failure caused by not following the installation angle specified in the fuel pump plunger maintenance manual.

. fuel pump plunger failure caused by not following the cleaning requirements specified in the fuel pump plunger maintenance maintenance manual.

. fuel pump plunger failure caused by failure to replace consumable parts as specified in the fuel pump plunger maintenance manual.