Fuel Injector 1J801-53052 0445110777 for Kubota V2403 D1803 Engine KX040-4 L3301F L3901F L4701F MX5200F MX4800H

Product Specifications

Compatible Models

Tired of Engine Misfires and Unexpected Downtime? Get the Right Kubota Fuel Injector 1J801-53052 for Your V2403 or D1803 Engine

Every hour your Kubota excavator or tractor sits idle due to poor fuel atomization costs hundreds — sometimes thousands — in lost productivity. OEM injectors take 2–4 weeks to arrive and cost 40% more. Counterfeit 1J801-53052 units fail within 300 operating hours, causing rough idling, black smoke, and repeated cylinder misfires that trigger diagnostic warnings.

OEM-Equivalent Performance, Ready to Ship from Guangzhou Warehouse

This Kubota fuel injector is manufactured in ISO 9001-certified facilities and undergoes full functional testing before shipment — including pop pressure verification at 220 bar, spray pattern analysis, and leak-off rate measurement. Designed for continuous duty in hydraulic excavators like the KX040-4 and high-horsepower tractors like the MX5200F, it delivers consistent injection timing and precise fuel metering under variable load conditions.

Where This Part Works

The 1J801-53052 fuel injector operates reliably in demanding environments: construction sites with dust and vibration, quarry operations with high ambient temperatures, port handling equipment running 16+ hours daily, and agricultural applications where cold-start performance matters. It sustains stable combustion across the full RPM range of Kubota V2403 and D1803 engines — critical when powering hydraulic attachments or PTO-driven implements. Kubota D1803 fuel injector reliability directly affects fuel efficiency and exhaust emissions compliance.

Engineering Details That Matter

Each injector features a hardened stainless steel nozzle tip (HRC 62–65) for resistance to erosion from biodiesel blends and low-sulfur fuels. The precision-ground needle valve has ±1 µm dimensional tolerance to ensure repeatable opening pressure and prevent dribble after injection. Internal flow paths are electropolished to reduce carbon buildup and maintain laminar flow. The body uses high-strength aluminum alloy with anodized surface treatment to resist corrosion from engine bay condensation and cleaning solvents. All seals meet SAE J1648 standards for elastomer compatibility with ultra-low sulfur diesel (ULSD).

The Real Cost of Wrong Parts

A $35 counterfeit injector may save upfront but often fails before 500 hours — triggering secondary damage to glow plugs, ECU sensors, and even the injection pump. Replacing one faulty unit mid-shift adds 2–3 hours of labor; replacing a full set prematurely doubles that cost. Industry data shows incorrect fuel injector sets increase total ownership cost by 22% over 3 years due to higher fuel consumption, unplanned downtime, and accelerated wear on downstream components. This 1J801-53052 replacement meets original Kubota specification 0445110777 and passes all OEM-equivalent performance benchmarks — delivering true TCO advantage.

Why Customers Trust XUNPO

Packaging & Shipping

• Individually sealed in anti-static bags with foam cushioning inside rigid cardboard boxes
• In-stock items ship within 2–5 working days after payment confirmation
• Flexible logistics: DHL/FedEx/UPS express (3–7 days), air freight (7–12 days), sea freight (25–40 days)
• Real-time tracking provided via email and WhatsApp upon dispatch
• MOQ is 1 piece — ideal for urgent field repairs or validation testing

Get Your Kubota Fuel Injectors Now

Your machine isn’t generating revenue while waiting. Send us your part number (e.g., 1J801-53052), exact model (e.g., Kubota KX040-4), and required quantity — we’ll reply with a competitive quote within 24 hours. First-time buyers can request a sample injector for bench testing before bulk order. Stock is available now in Guangzhou.

Frequently Asked Questions