Thickness: 4mm
When installed on 38-39mm pumps, this sleeve will add 8mm to the overall diameter of the pump.
This sleeve fits all Walbro/TI Automotive GSS340, GSS341, GSS342, F20000169, F9000267, F90000274, F90000285, F90000295, AEM 50-1000, Deatschwerks 9-301, DW300, & Aeromotive 11542 pumps.