Flexible Throttle Body Arm (31600FA)


The flexible throttle body arm is designed to attach to any of the Affinity EG gasoline or diesel induction nozzles to precisely position them in the fresh air induction entrance during an induction cleaning service.  Various nozzle options can be interchanged, depending on the type of induction service being performed.

Flexible Throttle Body Arm for:
Fuel Service Tool
(FST16 and FST24 #31600FA)
Diesel Service Tools
(EGR64 and MFT32)

SKU: 31600FA Category: Tags: , ,
SKU: 31600FA Category: Tags: , ,
Features of Flexible Throttle Body Arm (31600FA):
  • Threaded nozzle holder interchanges with various Affinity EG induction nozzle designs
  • The 1″ spring clamp can be mounted on nearby engine components to hold the induction nozzles in exact position for each service
  • The flexible, inter-loc arm can be adjusted to fit on all engine designs

Flexible Throttle Body Nozzle Tool Sets:
31606B – 0.65 GPH Nozzle
31608B – 0.85 GPH Nozzle (Standard)

Nozzles Only:
31606N – 0.65 GPH Nozzle
31608N – 0.85 GPH Nozzle (Standard)

Flexible Throttle Body ‘S’ Tool Sets:
31606S – 0.65 GPH Nozzle
31608S – 0.85 GPH Nozzle (Standard)

Induction ‘S’ Tool Only:
31606A – 0.65 GPH Nozzle
31608A – 0.85 GPH Nozzle (Standard)

Additional information

Weight 0.3 lbs
Service Instructions


① Depressurize tool before removing fill cap. Fill with injection cleaner.

② Attached required fuel injection adapter to vehicle and service tool. Disengage vehicle fuel pump.

③ Set tool pressure required for engine. Open service hose valve and start engine. Run all cleaner until engine stops.

④ Remove tool & fuel injection adapter. Re-engage fuel pump.


① Depressurize tool before removing fill cap. Fill with injection cleaner.

② Attach “S” Tool or Flex Nozzle Tool for induction service.

③ Close service hose valve and set tool pressure to 60 psi.

④ Install “S” tool in fresh air tube at throttle plate, or set Flex Nozzle Tool from throttle plate with fresh air tube removed (disconnect MAF sensor).

⑤ Run service on warm engine at 1200 RPM. Blow out 3-4 times during service to strip soot/carbon and clear induction system.

⑥ After service, run 10 min. then drive briskly to clear induction system.

⑦ Reconnect MAF sensor and clear any engine codes.


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