Sun Coast Cycle Sports stocks used parts for the Kubota RTV400, a compact gasoline-powered utility vehicle designed for tight spaces and easy transportation. Produced from approximately 2009 to 2018, the RTV400 (also known as the RTV400Ci) runs a 16 hp air-cooled single-cylinder gasoline engine with electronic fuel injection and a CVT with inertial clutch. Compact enough to load into a full-size pickup truck bed, the RTV400 was positioned as an entry-level work and recreation UTV. All parts are inspected, individually cataloged with photos, and ship from our Odessa, Florida facility.
RTV400 platform and parts compatibility
The RTV400 uses an air-cooled gasoline engine, making it distinct from the liquid-cooled diesel engines in the larger RTV models and from the liquid-cooled gasoline engine in the RTV500. The RTV400 and RTV500 share some chassis design philosophy and compact dimensions but use different engines and transmissions. The RTV400's CVT with inertial clutch differs from the RTV500's VHT hydrostatic system. Body panels between the RTV400 and RTV500 have some dimensional similarities but mounting points and fitment should always be verified by part number.
Common RTV400 failure points and replacement parts
CVT belt and clutch: The belt-drive CVT is the primary wear item. The inertial clutch engages at specific RPM and can develop grab or slip issues as it wears. Belt replacement is a routine maintenance item.
Air-cooled engine maintenance: Without liquid cooling, the RTV400's engine depends on adequate airflow for cooling. Keep the cylinder fins and shroud clear of debris. Operating in extremely hot conditions or at sustained low speeds can cause overheating.
EFI cold starting: While the EFI system eliminates choke adjustments, the fuel pump and injector must be in good condition for reliable cold starts. Stale fuel causes starting issues after storage.
Commonly replaced RTV400 parts
- CVT drive belt and clutch components
- Spark plug and ignition components
- Fuel injector and fuel pump
- Air filter and engine shroud
- Suspension bushings and components
- Seats, seatbelts, and ROPS padding
- Bed liner, tailgate, and cargo hardware
- Tires, wheels, and axle components
Frequently asked questions
Q: Will RTV500 parts fit an RTV400
The RTV400 and RTV500 are similar in size but use different engines (air-cooled single vs. liquid-cooled twin) and different transmissions (CVT vs. VHT hydrostatic). Engine and drivetrain parts do not interchange. Some accessory and body components may be dimensionally similar but always verify by part number before purchasing.
Q: Is the RTV400 diesel or gasoline
The RTV400 is gasoline-powered with a 16 hp air-cooled single-cylinder engine with electronic fuel injection. It is the simplest and most compact UTV in the Kubota lineup.
The RTV400 was the most compact and affordable vehicle in Kubota's UTV lineup. Designed as an entry point for property owners and recreational users who needed basic 4WD utility, the RTV400's most distinctive feature was its ability to fit into a standard full-size pickup truck bed for easy transportation to remote locations. The air-cooled single-cylinder engine kept the design simple with fewer maintenance items than the liquid-cooled models, though this also meant less tolerance for sustained heavy-load operation in extreme heat. The CVT with inertial clutch provided simple, automatic operation without the learning curve of the hydrostatic systems.
Q: Can the RTV400 fit in a pickup truck bed
Yes. The RTV400 was specifically designed to fit into a full-size long-bed pickup truck for transportation. Its compact dimensions made it popular for hunters and property owners who needed to transport their UTV to remote locations.
Q: What is the top speed of the RTV400
The RTV400 has a top speed of approximately 15-18 mph depending on load and terrain. It is the slowest vehicle in the Kubota UTV lineup but provides adequate speed for property maintenance and light recreational use.
Inspected by Powersports Technicians • Only One in Stock • Ships Fast from Florida
