OTO-KAUTOPARTS Fuel Pump Assembly for Hisun UTV HS400/HS500/HS700/HS800 - Direct-Fit OEM-Quality, Quiet Operation

If your UTV is suffering from hesitation, stalling, poor acceleration, or a noisy fuel tank, a worn or failing fuel pump module is often the culprit. This OTO-KAUTOPARTS electric fuel pump assembly is built to match OEM fit and function for a wide range of Hisun and compatible UTVs, offering a straightforward swap that brings fuel pressure and flow back into specification without costly engine work.

How does this fuel pump assembly improve my UTV's performance?

By re-establishing stable fuel pressure and consistent flow, the replacement module helps the engine run smoothly under load and during acceleration. It minimizes surging and prevents the lean conditions that cause hesitation or stall.

• Restores factory fuel delivery characteristics for better throttle response
• Reduces engine stalling and misfire caused by inconsistent fuel supply
• Quiets fuel tank vibration and pump noise associated with failing units

Is this pump a direct fit for my Hisun or equivalent model?

Yes — the assembly is engineered to fit multiple Hisun UTV models and several compatible brands, matching common OEM mounting and electrical interfaces. It replaces referenced OEM part numbers to simplify identification and installation.

• Compatible with Hisun UTV400/500/700/800 and HS400/HS500/HS700/HS800
• Also fits models from TSC, Bennche, Excalibur, Massimo, Menards/Yardsport, Qlink, and Supermach
• Cross-references OEM numbers like 39500-115H-0000 and 16521-055-0000 for verification

What materials and quality measures ensure durability?

The module uses robust components and manufacturing standards intended to meet or exceed OEM lifespan expectations. Corrosion-resistant materials and reliable electrical contacts help the pump withstand fuel exposure and vibration typical of off-road use.

• Constructed with high-grade materials for longevity in rugged conditions
• Designed to maintain stable voltage and continuous operation under load
• Tested to meet fitment and functional requirements comparable to original parts

What warranty and support does OTO-KAUTOPARTS provide?

OTO-KAUTOPARTS backs this fuel pump assembly with a one-year warranty and responsive customer service to help with fitment questions or replacement needs. Support is available around the clock to address concerns and make installation smoother.

• One-year warranty against defects and premature failure
• 24-hour customer service and online consultation for technical help
• Clear OEM cross-reference numbers included to confirm compatibility before purchase

Who is this for: This fuel pump assembly is ideal for owners, mechanics, and fleet managers who operate Hisun UTVs or compatible brands and need a dependable, OEM-style replacement that restores fuel system reliability. It’s a practical option for routine maintenance, repair after component failure, or when troubleshooting fuel-related drivability issues.