Genuine Cummins Onan Green Label resistive spark plug for the HGJBB (Spec A–B) QG 2500/2800 LP generator. Replace every 500 hours. 2 plugs required per generator — sold individually.
The Cummins Onan 167-1652 is the OEM-specified spark plug for the HGJBB QG 2500/2800 LP generator (Spec A–B). The HGJBB is a 2-cylinder engine — a complete service requires two plugs, sold individually. Per the Green Label Parts Guide, replacement interval is every 500 hours of operation, or annually if the generator sees fewer than 500 hours in a year.
This is a resistive spark plug. Cummins Onan specifies resistive plugs for the HGJBB because the built-in resistor suppresses electrical interference from the ignition system that can affect the generator's electronic control board. Non-resistive "will-fit" plugs may physically fit but can cause generator shutdowns without triggering fault codes — making the failure difficult to diagnose.
Built-in resistor suppresses ignition interference that can cause the electronic control board to shut down the generator — non-resistive plugs cause shutdowns without fault codes
OEM-specified for the HGJBB — correct heat range, thread pitch, and electrode configuration for the QG 2500/2800 LP engine
Current part number replacing the earlier A043K739 — direct OEM replacement for all HGJBB Spec A–B generators
Replace every 500 hours of operation, or annually if fewer than 500 hours are accumulated in a year — per the Cummins Green Label Parts maintenance schedule
The 167-1652 fits the HGJBB (Spec A–B) only. The brief's fitment description — QG 2800, QG 4000, Camp Power, MicroLite, MicroQuiet — describes the broader generator family column in the Green Label Parts Guide, not this plug's compatibility. Those generators each use their own specific spark plugs. Confirm your generator's complete model and spec number from the nameplate before ordering.
The HGJBB is a 2-cylinder engine requiring two spark plugs for a complete service. This listing is for a single plug. Order two to complete a full tune-up.
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Backed by a 90-day limited manufacturer's warranty against defects in materials and workmanship. Cummins Onan warranty does not cover damage caused by the use of non-Green Label, non-resistive spark plugs.