Description
Product Overview
The Mikuni MK-DF52-531 Fuel Pump Rebuild Kit is engineered specifically for Yamaha Rhino 450 and 660 ATVs. Constructed from alloy steel and machined metal, the gerotor pump delivers precise fuel flow with an automatic operation mode. The kit includes all OEM‑specified components, such as a 5‑inch barb outlet, 0.31‑inch hose barb inlet, and a bung mount for straightforward installation. Designed to meet OE standards, it restores the original performance and reliability of your fuel system.
![[Product front view showing all components]](https://www.eclipsetoy.store/wp-content/uploads/2026/06/fb743ba4c8764e54b5be83acc352a0fc.jpg)
Usage
Ideal for off‑road enthusiasts, this rebuild kit is used when the factory fuel pump shows signs of wear, reduced power, or inconsistent idling. Perfect for trail riding, worksite utility, and recreational ATV use, the kit ensures your engine receives a steady fuel supply even under heavy loads. Install the kit on any 2006‑2009 Rhino 450 or 2004‑2007 Rhino 660, following the included service guide for a quick, tool‑minimal rebuild.
Why Choose Us
Mikuni is a trusted name in fuel system technology, and this kit uses genuine Mikuni parts to guarantee compatibility and durability. Each component is precision‑machined to match the original specifications, reducing the risk of leaks or premature failure. Our kits undergo rigorous quality checks and come with a satisfaction guarantee, giving you confidence that your ATV will perform at peak levels after the rebuild.
Key Features
- Genuine Mikuni metal gerotor ensures long‑lasting fuel flow accuracy
- Vehicle‑specific fit eliminates guesswork and modification
- Automatic operation mode provides consistent performance under all conditions
- Lightweight alloy steel construction resists corrosion and wear
- Comprehensive after‑sales support with detailed installation guide and technical assistance
FAQ
Which Yamaha Rhino models are compatible?
The kit fits 2006‑2009 Rhino 450 models and 2004‑2007 Rhino 660 models, matching part numbers 5UG‑13910‑01‑00 and 5UG‑13910‑00‑00.
Do I need special tools to install the kit?
Installation requires basic hand tools such as wrenches and screwdrivers; no specialized equipment is necessary.
Will this kit improve engine performance?
By restoring the fuel pump to OEM specifications, the kit ensures optimal fuel delivery, which can improve throttle response and overall engine smoothness.
Is the kit covered by a warranty?
Yes, Mikuni offers a limited warranty on all components against manufacturing defects.
Can I use this kit on other ATV brands?
The kit is designed specifically for Yamaha Rhino models; using it on other brands may result in fitment issues.





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