Onan A026K278 Fuel Filter | Fleetguard OEM Replacement for Generators & Diesel Engines
Onan A026K278 Fuel Filter | Fleetguard OEM Replacement for Generators & Diesel Engines is backordered and will ship as soon as it is back in stock.
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Description and Details
Description and Details
Keep your generator running strong with the Onan A026K278 Fuel Filter, an OEM-quality replacement manufactured by Fleetguard. Designed to provide superior fuel filtration, this filter protects your diesel engine from dirt, debris, and harmful contaminants, ensuring smooth fuel flow and reliable performance.
The A026K278 fuel filter is a direct replacement for Onan part #149-2106 and is the same as Fleetguard FS19709, giving you multiple trusted cross-references for confidence in fit and function.
This filter is built specifically for Onan diesel generator models, including multiple HDKAG and DKG variants, making it a dependable solution for both scheduled maintenance and emergency replacements.
Key Features:
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Genuine Onan/Fleetguard OEM Fuel Filter (Part #A026K278)
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Replaces Onan 149-2106
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Same as Fleetguard FS19709
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Ensures clean, contaminant-free fuel for longer engine life
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Easy installation with durable, reliable construction
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OEM-quality performance trusted by Onan and Fleetguard
Compatible With Generator Models:
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Onan HDKAG (Spec A-B)
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Onan HDKAG (Spec C)
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Onan HDKAG (Spec D-F)
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Onan HDKAG (Spec G)
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Onan DKG (Spec A) Diesel Engine
Whether you’re servicing your generator for routine maintenance or replacing a worn filter, the A026K278 OEM fuel filter delivers lasting protection and trusted performance.
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Product Disclosure – Scenic City Supply
Scenic City Supply is an independent liquidation company. We are a secondary seller of products and are not affiliated with, sponsored by, or authorized by any product manufacturer. All trademarks, brand names, model numbers, and logos mentioned are the property of their respective owners and are used strictly for identification and compatibility purposes.
Scenic City Supply’s inventory comes from multiple sources, including but not limited to surplus, liquidation, closeouts, overstock, and insurance-loss merchandise. All products are new, OEM, and unused unless otherwise stated. As a liquidator, some items may show cosmetic imperfections such as tarnish, discoloration, or minor surface wear. These conditions do not affect the function, performance, or integrity of the product.
Packaging may be damaged, show signs of storage, or be replaced for safe delivery. The sale of this product by Scenic City Supply is not subject to the policies of the manufacturer. Any warranty offered by the manufacturer is not available to you as the purchaser. Any applicable warranties or guarantees will be disclosed in writing at the time of sale.
Every item is opened and inspected prior to shipment to confirm quality and accuracy. If you are not fully satisfied with your purchase, you may return it within 30 days in its original packaging for a full refund.

