Product Specifications
| Parameter | Details |
|---|
| Part Name | Kubota Engine Thermostat |
| Part Number (OEM Reference) | 15321-73010 |
| Replaces Part Numbers | 19434-73010, 19434-73013, 19434-73014, 15321-73014, 15321-73015, 15321-73016, 1E401-73010 |
| Brand Compatibility | For KUBOTA engines only |
| Operating Temperature | 160°F / 71°C |
| Engine Model Fitment | D902, D905, D1005, D1100, D1102, D1105, D1301, D1302, D1302-DI, D1402, D1402-DI, D1403, D1703, DH1101 |
| Condition | New Aftermarket |
| Warranty | 6-month warranty against manufacturing defects |
| Packaging | Individual sealed retail box with protective foam |
Compatible Models
| Brand | Applicable Models |
|---|
| Kubota | D902, D905, D1005, D1100, D1102, D1105, D1301, D1302, D1302-DI, D1402, D1402-DI, D1403, D1703, DH1101 |
Tired of Overheating Kubota Engines? Get the Right 15321-73010 Thermostat for D1105 and D1302 Applications
Every hour a Kubota-powered machine sits idle due to coolant system failure costs operators hundreds — sometimes thousands — in lost productivity. Counterfeit thermostats open too early or fail to seal properly, causing inconsistent engine temperatures, reduced fuel efficiency, and accelerated cylinder head wear. OEM replacements often require 3–4 weeks lead time, halting critical maintenance on excavators, loaders, and agricultural tractors.
OEM-Equivalent Quality, Ready to Ship from Guangzhou Warehouse
This Kubota thermostat meets original equipment thermal response tolerances within ±1.5°C and is manufactured in ISO 9001-certified facilities. Each unit undergoes pre-shipment functional testing at 71°C under simulated engine load conditions. With 10 years’ experience supplying Kubota engine components globally, XUNPO maintains over 10,000 SKUs in stock — including this 15321-73010 thermostat — ready for immediate dispatch to support urgent repairs on D1105, D1302, and D902 engine platforms.
Where This Part Works
This thermostat is routinely installed in Kubota-powered construction equipment operating in high-ambient environments — such as demolition sites in the Middle East, rice harvesters in Southeast Asia, and port-side material handlers in West Africa. Under continuous load, the D1105 and D1302 engines generate significant heat; precise thermal regulation prevents localized boiling in the cylinder head and avoids gasket blowouts. Kubota engine thermostat 71C stability directly impacts long-term reliability in dusty, humid, or temperature-extreme conditions.
Engineering Details That Matter
The wax-pellet actuator is calibrated to initiate opening at exactly 71°C and achieve full lift by 78°C — matching OEM thermal hysteresis curves. Housing material is pressure-cast aluminum alloy with T6 heat treatment for dimensional stability under repeated thermal cycling. The sealing surface features a nitrile rubber gasket rated to 120°C continuous exposure, preventing coolant bypass even after 500+ thermal cycles. Precision-machined mounting flange tolerances hold within ±0.05 mm to ensure leak-free installation without distortion or re-torqueing. Surface finish meets ISO 8502-3 cleanliness standards to prevent corrosion initiation at the coolant interface.
The Real Cost of Wrong Parts
A substandard thermostat may cost 20% less upfront but risks premature engine overheating — leading to warped cylinder heads ($1,200+ repair), degraded oil performance, and unplanned downtime averaging $2,800/day for rental fleet operators. Industry data shows non-OEM-equivalent thermostats fail 3.2× faster under real-world load cycles. By contrast, this Kubota thermostat 160F delivers verified thermal accuracy per SAE J1927 test protocols, reducing total cost of ownership through extended service intervals and predictable maintenance scheduling. It’s not about price — it’s about avoiding cascading failures.
Why Customers Trust XUNPO
We source exclusively from ISO 9001-certified factories and perform incoming batch inspection on every shipment. Every thermostat undergoes 100% functional performance testing before packaging. All units carry a 6-month warranty covering manufacturing defects — no questions asked. Our team has supported Kubota engine customers across 120+ countries since 2016. With 20+ technical specialists on staff, we verify part compatibility and cross-reference applications within 2 hours of inquiry. And because we hold 10,000+ commonly used parts in our Guangzhou warehouse, your 15321-73010 order ships in 2–5 working days — no waiting for production runs.
Packaging & Shipping
- Individually sealed in branded retail box with anti-static foam padding and moisture barrier lining
- In-stock items ship within 2–5 working days from Guangzhou warehouse
- Flexible logistics: Express (DHL/FedEx/UPS), air freight, or sea freight — quoted per destination
- Real-time tracking number provided upon dispatch, updated until delivery
- MOQ is 1 piece — designed for urgent field repairs and small-batch verification
Get Your Kubota Thermostat Now
Your D1105 or D1302 engine shouldn’t wait weeks for a simple thermostat replacement. Send us your part number (15321-73010), machine model, and quantity — we’ll reply with a competitive quote within 24 hours. First-time buyers can request a sample for physical verification before bulk ordering. Every day delayed is another day of compromised engine health and higher operating costs.
Frequently Asked Questions
Q: Is this an original Kubota part or an aftermarket replacement?
A: This is an OEM-equivalent aftermarket thermostat, manufactured in ISO 9001-certified facilities to meet Kubota’s original thermal and dimensional specifications.
Q: How do I confirm this fits my specific Kubota machine?
A: Provide your engine model (e.g., D1105) and serial prefix if available — our technical team will verify compatibility and respond within 2 hours.
Q: What is the warranty coverage?
A: 6-month warranty against manufacturing defects. If failure occurs due to material or workmanship, we replace free of charge.
Q: What is the minimum order quantity?
A: MOQ is 1 piece — ideal for urgent repairs, testing, or small workshops.
Q: How soon will my order ship?
A: In-stock orders ship within 2–5 working days from our Guangzhou warehouse via your preferred method: express, air, or sea.
Q: Can I receive a sample before placing a bulk order?
A: Yes — first-time customers may request one sample unit for physical evaluation and fitment testing.
Ready to order or need a quote?
Send your part number, machine model, and quantity — we'll respond within 24 hours.
WhatsApp: +86 13316055942 | Email: talos@xunpojx.com
