Cummins Onan Fuel Filter 149-2341-01 — Direct-Fit Replacement for Marquis & Microlite RV Generators

The CUMMINS NW Onan fuel filter 149-2341-01 is a direct-fit replacement filter designed to keep fuel clean and protect Marquis and Microlite RV generator fuel systems.

This replacement fuel filter fits a range of Onan RV generator models, including Marquis Gold, Marquis Platinum EFI, and Microlite QG engines. It’s manufactured to Cummins' specifications and packaged compactly for straightforward installation. Ideal for routine maintenance, this filter helps reduce contaminants before they reach the injector and pump assemblies on gasoline-powered RV generators.

Which generator models is this filter compatible with?

The 149-2341-01 fuel filter is built for several Onan RV generator lines. It fits Marquis Gold and Marquis Platinum QG EFI units as well as Microlite QG models. Always cross-check your generator’s service manual or existing parts number to confirm fitment.

• Fits Marquis Gold / RV QG generator models
• Compatible with Marquis Platinum / RV QG EFI systems
• Works with Microlite / RV QG engines
• Replace per manufacturer interval or if fuel flow issues appear

How does installing this filter affect generator performance?

Installing a fresh fuel filter reduces debris and water reaching sensitive fuel components, helping maintain steady fuel flow and consistent engine operation. While it doesn’t increase horsepower, it protects injectors and pumps from premature wear and helps preserve fuel system reliability over time.

• Removes particulates and contaminants from gasoline
• Reduces risk of clogged injectors or fuel pump strain
• Promotes steady fuel delivery during runtime

What are the physical and packaging details to expect?

The part ships in a compact package (approx. 3.302 L x 9.144 H x 6.096 W centimeters) and is marked with the Cummins/Onan part reference. It is manufactured in China and supplied as a single replacement unit suitable for on-site service. Keep the old filter for part-number verification if unsure.

• Compact packaging for easy storage and transport
• Single-unit replacement; save old filter for cross-reference
• Country of origin: China

How should I maintain or replace this filter?

Follow your generator manufacturer’s recommended service interval for fuel filter replacement, or change it sooner if you notice fuel delivery problems or contamination. Replacement is typically straightforward: relieve fuel system pressure, remove the old filter, and install the replacement using the correct orientation and sealing methods.

• Replace at manufacturer-recommended intervals or when fuel issues appear
• Follow proper safety steps: relieve pressure, catch fuel, tighten fittings
• Check for leaks after installation and run the generator to verify operation

Who is this for: RV owners, fleet managers, and service technicians who maintain Onan Marquis and Microlite RV generator models will find this Cummins 149-2341-01 fuel filter a like-for-like replacement part. It’s suited for routine preventive maintenance, field repairs, or as a stocking part for service kits where preserving fuel-system components and ensuring reliable generator starts is important.