160°F 71°C Kubota engine thermostat for D902, D1105, D1302, D1403 models

Product Specifications

Compatible Models

Tired of Overheating Kubota Engines? Get the Correct 15321-73010 Thermostat for D902, D1105, D1302 and D1403 Tractor Engines

Every unplanned shutdown of a Kubota-powered tractor or compact excavator costs operators hundreds to thousands in lost productivity—especially during peak planting, harvesting, or site prep seasons. Counterfeit or underspec thermostats cause erratic coolant flow, leading to thermal stress, head gasket failure, or even cracked blocks. OEM parts often take 3+ weeks to arrive, while generic replacements fail within months under continuous load.

OEM-Equivalent Quality, Ready to Ship from Guangzhou Warehouse

This Kubota thermostat is manufactured in ISO 9001-certified facilities and tested for opening accuracy, pressure resistance, and cycle endurance before shipment. With 10 years of global export experience and 10,000+ SKUs in stock—including over 300 Kubota engine components—we deliver precise-fit replacements for critical cooling system repairs on farms, construction sites, and municipal fleets. No guesswork: it’s engineered for real-world duty cycles in Kubota D-series engines.

Where This Part Works

This thermostat operates reliably in agricultural tractors, compact excavators, skid steers, and utility loaders powered by Kubota D902–D1403 engines—commonly deployed across Southeast Asia rice paddies, Middle Eastern irrigation projects, North American vineyards, and African infrastructure builds. It maintains stable coolant temperature during high-load, stop-start operation where ambient temperatures exceed 40°C and engine bay heat soak is severe.

Engineering Details That Matter

The bimetallic wax element is calibrated to open fully at 71°C ±1.5°C, ensuring consistent thermal regulation without premature or delayed activation. Housing is precision-machined brass with nickel plating for corrosion resistance in ethylene glycol–water coolant mixtures. Sealing surface tolerances are held to ±0.02 mm to prevent bypass leakage that would compromise radiator efficiency. Internal spring force is rated for 50,000+ thermal cycles—matching OEM service life expectations under normal operating conditions. All units undergo vacuum leak testing prior to packaging.

The Real Cost of Wrong Parts

A $12 counterfeit thermostat may save upfront but risks $1,800+ in labor, coolant flush, and head gasket replacement if it sticks closed. Under ISO 9001 production controls and third-party validation, our 15321-73010 meets SAE J1927 performance benchmarks for heavy-duty diesel engine thermostats. Choosing the right part reduces total cost of ownership (TCO) by avoiding repeat failures, minimizing downtime, and extending overall engine service intervals—especially critical for fleet operators managing multiple Kubota D-series machines.

Why Customers Trust XUNPO

Packaging & Shipping

• Individually boxed with molded EPE foam and moisture-resistant carton
• In-stock items ship within 2–5 working days after order confirmation
• Flexible logistics: Express (DHL/FedEx/UPS), air freight, or sea freight available
• Real-time tracking number provided upon dispatch
• MOQ: 1 piece—designed for urgent field repairs and small workshops

Get Your Kubota Thermostat Now

Your Kubota engine shouldn’t wait weeks for a thermostat. Send us your machine model (e.g., D1105), quantity, and destination—we’ll reply with a competitive quote within 24 hours. First-time buyers can request a sample for bench testing. Stock is ready; downtime isn’t.

Frequently Asked Questions