KAKATHU Fuel Pump Tune-Up Kit for Cummins Onan 3600W & 4000W KY Series – Includes Fuel Pump, Fuel & Air Filters

The KAKATHU 149-2311 Fuel Pump Tune Up Kit replaces worn fuel and air delivery parts to restore steady performance for Cummins Onan 3.6KY and 4KY gas RV generators.

If your MicroQuiet or Microlite KY-series generator is showing signs of rough idling, hard starts, or reduced run time, this comprehensive tune-up kit bundles the key consumables you need: a fuel pump (149-2311/E11007), fuel filter (149-2457), air filter (140-3280), fuel line and clamps. Instead of sourcing parts individually, the kit groups compatible, durable components that match common Cummins Onan part numbers so you can complete preventive maintenance or a field repair in one visit.

How does this kit improve generator starting and running?

Replacing the fuel pump and filters removes flow restrictions and keeps contaminants out of the carburetion and combustion areas. A properly functioning pump maintains steady pressure and volume, while clean fuel and air filters reduce deposits that cause stumbling, misfires, or longer cranking times.

• Fuel pump 149-2311 restores consistent fuel delivery
• Fuel filter 149-2457 traps particulates and debris
• Air filter 140-3280 prevents dust and soot from entering the engine
• New fuel line and clamps ensure leak-free connections

Which generators and part numbers does this tune-up kit fit?

This kit is designed for Cummins Onan KY-series gasoline generators, including MicroQuiet and Microlite models rated at 3600W (3.6KY) and 4000W (4KY). Check the original unit’s part labels or service manual to confirm compatibility before installing.

• Compatible with Cummins Onan KY, MicroQuiet, Microlite series
• Fits 3600W (3.6KY) and 4000W (4KY) models when part numbers match
• Cross-references: 149-2311, E11007, A029F889, 149-2311-01 for the pump
• Includes filters: 149-2457 (fuel) and 140-3280 / 48-2017 (air)

What comes in the package and how easy is installation?

The kit contains the fuel pump, fuel filter, air filter, a section of fuel line and four clamps—enough hardware to replace the most common wear items. Installation is straightforward for anyone familiar with small engine service: drain fuel as needed, swap filters and pump, and secure hose connections; follow safety and generator manufacturer instructions.

• Package includes pump, fuel filter, air filter, fuel line and four clamps
• Direct-replacement parts minimize modification or extra adapters
• Basic hand tools required; no specialized equipment necessary
• Always follow Cummins Onan safety and service guidelines

How durable are the components for RV and portable use?

Parts are built to resist heat, vibration and prolonged operation typical of RV and portable generator duty cycles. The materials and construction focus on reliability to reduce the need for repeated shop visits and to support dependable power during travel or standby use.

• Fuel pump designed for steady flow under load and vibration
• Filters use media rated for generator fuel and air contaminants
• Fuel line and clamps specified for secure, leak-free service
• Intended for seasonal maintenance and preventive replacement

Who is this for: RV owners, mobile technicians and anyone maintaining Cummins Onan KY-series 3600W or 4000W gas generators who wants a single, verified parts bundle for routine servicing or roadside repairs. The KAKATHU tune-up kit helps reduce downtime with parts that match common Onan references—ideal for preventive maintenance before trips, during seasonal storage cycling, or when restoring a unit that has sat unused.