TSHOU Cummins Onan MicroQuiet/MicroLite 4kW Tune-Up Kit — Air Filter, Fuel Pump & Filters

TSHOU’s tune-up kit bundles a replacement air filter, fuel pump, fuel filters, spark plugs, clamps and fuel line designed to service Cummins Onan Microlite / MicroQuiet 3600–4000 4 kW RV generators.

Keeping a small RV generator running dependably means swapping wear items on schedule. This complete kit collects the common consumables—air filter (1403280 / 48-2017 family), fuel pump (E11007 / 149-2311 family), two fuel filters (149-2457), replacement spark plugs, clamps and a fuel line—so you can perform a thorough maintenance session without hunting for individual parts. All components are selected to match the fitment and installation points on Cummins Onan MicroLite and MicroQuiet KY-series models used in many RVs and campers.

Will this kit fit my Cummins Onan Microlite or MicroQuiet 4000 generator?

Compatibility covers the MicroQuiet 3600 and 4000 models and the MicroLite/MicroQuiet KY-series listed by Camp Power/QG. Check the part numbers on your existing components and your generator model plate before ordering.

• Air filter cross-references: 48-2017, 140-2852, 140-3280, 140-3295
• Fuel pump references: E11007, A029F889, 149-2311 series
• Fuel filter references: 149-2457
• Intended for Cummins Onan MicroQuiet / MicroLite KY-series 3600 / 4000 4 kW RV generators

What parts are included and what will I be able to service?

The kit contains the primary consumables needed for a routine tune-up—air intake, fuel delivery, ignition and connectors—so you can refresh the systems that most affect starting and running reliability.

• 1 x air filter (TSHOU / 140-3280 cross-reference)
• 1 x fuel pump (E11007 / 149-2311 family)
• 2 x inline fuel filters (149-2457)
• 1 x replacement fuel line, 2 x spark plugs, and 4 x hose clamps

How difficult is installation and what tools will I need?

Most do-it-yourselfers with basic mechanical skill can complete the swap. Tasks include removing the generator access cover, replacing the air element, swapping the fuel pump and filters, fitting the fuel line, and tightening clamps. Follow the OEM service manual for torque and safety procedures.

• Common tools: screwdrivers, pliers, socket set, fuel-safe container for draining
• Estimated time: 45–120 minutes depending on access and experience
• Tip: Work in a well-ventilated area and disconnect the battery or shut off fuel supply before starting

What maintenance benefits can I expect after replacing these parts?

Replacing the air filter, fuel pump and filters can restore predictable fuel delivery and cleaner combustion, which helps reduce hard starting and rough idling associated with clogged components. While results vary by condition and age, fresh consumables support more consistent generator performance.

• Cleaner airflow to the carburetor/engine from a new air element
• Improved fuel flow and pressure with a refreshed fuel pump
• Reduced debris and water ingestion risk with new fuel filters

Who is this for: This kit is designed for RV owners, fleet maintainers and field technicians who service Cummins Onan MicroLite and MicroQuiet 3600/4000 4 kW generators and want a single purchase to refresh fuel, air and ignition consumables. It’s especially useful for seasonal maintenance, pre-trip checks, or preparing a generator for extended storage. Before purchasing, confirm your generator model and cross-check the referenced part numbers to ensure correct fitment. If you have any questions about compatibility or installation, contact TSHOU support for assistance.