Genuine Cummins Onan Green Label air filter with foam pre-cleaner for HDKCA/CB, HQDPB, and HDCAA/AB Quiet Diesel RV generator models. Confirm your model code and spec letter before ordering. 12-month limited warranty.
The Cummins Onan 140-3071 is the OEM-specified air filter for the HDKCA/CB, HQDPB, and HDCAA/AB Quiet Diesel RV generator models. Like all Green Label air filters, it is designed with a special foam pre-cleaner providing an additional stage of filtration ahead of the main filter element.
Other manufacturers' air filters may use lighter-density filter paper with sealing surfaces that become brittle and crack over time — allowing unfiltered air directly into a diesel engine's intake. Even a small amount of ingested dirt causes accelerated wear on fuel injection and engine components. Replacement intervals vary by model — refer to the compatibility table below and your Operator's Manual for the correct service interval for your specific unit.
Tested and designed specifically for Cummins Onan RV diesel generators — meets OEM specifications for HDKCA/CB, HQDPB, and HDCAA/AB series
Special foam pre-cleaner provides an extra filtration stage ahead of the main element — not standard in most aftermarket substitutes
OEM fit for all compatible models and spec letters — no modifications required; replace at the scheduled interval per your Operator's Manual
Backed by a full 12-month manufacturer's warranty from date of purchase — longer coverage than the standard 90-day warranty on most Onan filter parts
The 140-3071 fits specific Quiet Diesel and older diesel model codes only — not all QD series generators. Other Quiet Diesel models use different air filter part numbers: • HDKAH / HDKAK (QD 3200 series) — use part 140-2897 • HDKBA (5.5 Quiet Diesel) — use part 140-3351 • HDZAA (QD 10000/12500) — use part 140-4151 • HQDPA / HQDPC (HQD series) — use part 140-2897 Always confirm using your generator's complete model number and spec letter. Locate your generator's data plate for the full model and spec designation.
Backed by a 12-month limited manufacturer's warranty from date of purchase, unlimited hours — or the remainder of the generator set warranty, whichever is longest. Cummins Power Generation warrants only the quality and integrity of Green Label Parts. Damage caused by the use of non-Green Label air filters is not covered under the Cummins Onan limited warranty.
Always confirm fitment using your generator's complete model number and spec letter. Maintenance intervals vary by model — the HDKCA/CB and HDCAA/AB series replace every 250 hours; HQDPB replaces every 500 hours. Refer to your Cummins Onan Operator's Manual before ordering. Other QD series models use different air filter part numbers — see the yellow box above.