Lisle 12320 19mm/22mm Fuel Line Socket Set
Lisle 12320 includes two line sockets with 19 and 22mm working openings and 3/8-inch square drive. The description identifies fuel-line fitting service on Cummins ISB and ISX engines. Match the actual fitting and required access; the description's older/newer engine wording does not give a complete year or application chart.
Specifications and included details
- Two line sockets: 19 and 22mm working openings.
- 3/8-inch square tool drive.
- Described for matching Cummins ISB/ISX fuel-line fittings.
Before ordering
Confirm the exact engine, fitting size and service-tool requirement. Follow manufacturer depressurization and fuel-system service procedures; do not choose a socket solely from an unspecified older/newer engine label.
Product questions and answers
Can model year alone determine which socket I need?
No exact year split is supplied. Match the actual fitting and manufacturer procedure.
Does 3/8 inch describe the fuel-line fitting?
No. It describes the square drive; working openings are 19 and 22mm.
Does this establish compatibility with every Cummins engine?
No. The description identifies ISB/ISX use without a universal application chart.
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