Technical Service Bulletins (TSB’s) are documents that outline recommended procedures for diagnosing and solving known product issues.  The issue may concern the product itself or the installation and use of the product. 

DeatschWerks Technical Service Bulletins (TSB):

Fitment kit issues for Subaru 65c fuel pump kits - TSB-15-02-24

Potential fuel leaks in 350iL fuel pumps (PN 9-350) - TSB-15-06-17

DW300c Fuel Pump Install in 09-15 Cadillac CTSV OE Pump Assembly - TSB-17-04-14

DW400 Fuel Pump Check Valve- TSB-19-05-01