Description
Overview
The iFJF 140-2897 Air Filter 3-Pack keeps your Onan QD and HQD Series RV generator breathing clean — and your wallet happy with bulk savings. Designed as a direct replacement for the factory air filter, this filter uses a metal-reinforced mesh and durable plastic frame to trap dirt, dust, and debris before they reach your generator's engine. Dirty air is the #1 cause of power loss and premature wear in RV generators — swapping in a fresh filter every 500 hours (or more often in dusty conditions) is the cheapest preventive maintenance you can do.
This value 3-pack covers a full season or multiple maintenance cycles. Each filter replaces OEM numbers 140-2897, PA5658, 83697, AF27906, LAF5978, CA11094, and 49697. Fits Onan QD Series (HDKAH Spec A-N, HDKAK Spec A-N, HDKAJ Spec A-L) and HQD Series (HQDPA Spec A-C, HQDPC Spec C).
Key Features
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3-Pack Value — Three filters at bulk pricing saves 30%+ compared to buying individual replacements. Stock up for a full season.
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Metal-Reinforced Frame — Unlike cheaper all-plastic alternatives, the integrated metal mesh prevents filter collapse and deformation under high-vacuum conditions, maintaining consistent airflow.
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Universal Fit for Onan QD/HQD — One filter covers all QD Series models (HDKAH, HDKAK, HDKAJ) and HQD Series (HQDPA, HQDPC). No guesswork.
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Superior Dirt-Holding Capacity — High-efficiency filter media captures fine dust, pollen, and debris while allowing full airflow for rated generator output.
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Quick Swap Design — Direct drop-in replacement. Open the housing cover, slide the old one out, slide the new one in — under 2 minutes with no tools.
Compatibility / Fitment
| Generator Series |
Engine Spec / Models |
| Onan QD Series |
HDKAH (Spec A-K), HDKAH (Spec L-N), HDKAK (Spec A-K), HDKAK (Spec L-N), HDKAJ (Spec A-K), HDKAJ (Spec L) |
| Onan HQD Series |
HQDPA (Spec A-C), HQDPC (Spec C) |
| Replaces OEM # |
140-2897, PA5658, 83697, AF27906, LAF5978, CA11094, 49697 |
Specifications
| Specification |
Details |
| Filter Dimensions |
5.8"L x 4"W x 3"H |
| Frame Material |
Plastic with integrated metal mesh reinforcement |
| Filter Media |
High-efficiency pleated cellulose/synthetic blend |
| Package Quantity |
3 filters per pack |
| Maintenance Interval |
Every 500 hours (more often in dusty conditions) |
Why Choose This 3-Pack
Onan generators are workhorses — but dirty air chokes them fast. A clogged filter robs output power, increases fuel consumption, and can cause hard starting or rough running. With this 3-pack, you're always ready for the next service interval without an emergency parts run. At under $14 per filter in this multi-pack, it's a fraction of what the OEM-branded filter costs at an RV dealership.
Frequently Asked Questions
Q: How do I know if this fits my Onan generator?
A: Check your generator's data plate for the model number. If you see HDKAH, HDKAK, HDKAJ (QD Series) or HQDPA, HQDPC (HQD Series), this filter fits.
Q: How often should I replace the air filter?
A: Onan recommends every 500 hours under normal conditions. If you frequently operate in dusty, sandy, or off-road environments, inspect every 250 hours and replace as needed.
Q: Is this a washable/reusable filter?
A: No — this is a dry paper/cellulose filter element designed for one-time use. Do not attempt to wash or oil this filter.
Q: Why buy a 3-pack instead of a single filter?
A: You save 30%+ per filter compared to buying singles. The 3-pack covers your full season with one purchase.
Q: How does this compare to the OEM Onan 140-2897 filter?
A: Same dimensions, same fit, same 500-hour rated service life. The main difference is price — iFJF filters cost significantly less without sacrificing filtration performance.
Keep your Onan generator breathing clean — 3-pack value ships today from iFJF.
