Water Pump 16251-73032 & Thermostat With Gasket 15531-73014 for Kubota Engine D1005 D1105 D1305 D905 V1305 V1505

Product Specifications

Compatible Models

Tired of Overheating Kubota Tractors? Get the Direct-Replace Water Pump & Thermostat Kit for D1005/D1105 Engines

Every hour a Kubota tractor sits idle due to cooling system failure costs operators hundreds — sometimes thousands — in lost productivity and repair delays. Counterfeit water pumps fail within weeks, causing repeated shutdowns and costly secondary damage. OEM parts for D1005 and D1105 engines often take 3+ weeks to arrive, halting critical farm or construction work.

OEM-Equivalent Quality, Ready to Ship from Guangzhou Warehouse

This water pump and thermostat kit delivers true OEM-equivalent performance — engineered for Kubota D1005 and D1105 engines, rigorously tested before shipment, and backed by XUNPO’s 10-year global export experience. We source exclusively from ISO-certified factories and maintain over 10,000 SKUs in stock at our Guangzhou warehouse — including this kit — so your repair isn’t delayed waiting for parts.

Where This Part Works

This kit is routinely installed on Kubota tractors operating in demanding environments: rice paddies with high humidity, rocky quarry sites with dust-laden air, coastal ports with salt exposure, and demolition sites where vibration and thermal cycling are extreme. In all cases, consistent coolant flow and precise thermostat response are essential to prevent cylinder head warping, gasket blowouts, and engine seizure — making correct part selection non-negotiable.

Engineering Details That Matter

The water pump housing is precision-cast from high-strength aluminum alloy (A380), ensuring dimensional stability under thermal expansion up to 110°C. The impeller features optimized vane geometry and balanced dynamic tolerance (±0.02 mm) to maintain rated flow rate at 2800 RPM without cavitation. The thermostat uses wax-element actuation calibrated to open fully at 82°C ±1.5°C — matching Kubota’s original specification — and includes a pressure-relief valve to prevent radiator hose burst. All sealing surfaces are machined to Ra ≤1.6 µm finish, and the gasket is made from multi-layer steel (MLS) with nitrile rubber coating for oil/coolant resistance.

The Real Cost of Wrong Parts

A $25 counterfeit thermostat may save upfront, but its inconsistent opening temperature causes chronic overheating — accelerating wear on cylinder liners and bearings. A low-grade water pump with undersized shafts or poor bearing preload fails after 300–500 operating hours, versus 2,500+ hours for this kit. Industry data shows incorrect cooling components increase total cost of ownership (TCO) by 220% over 2 years due to labor, downtime, and collateral damage. This kit meets ISO 9001 and Kubota OE dimensional and functional specs — reducing TCO through reliability, not discount pricing.

Why Customers Trust XUNPO

Packaging & Shipping

• Individually sealed in anti-corrosion film, cushioned with molded EPE foam, packed in reinforced 5-layer corrugated carton
• In-stock items shipped within 2–5 working days after payment confirmation
• Flexible logistics: Express (DHL/FedEx/UPS), air freight, or sea freight — selected per customer requirement
• Real-time tracking number provided upon dispatch
• MOQ: 1 piece — designed for urgent maintenance needs

Get Your Water Pump & Thermostat Kit Now

Your Kubota tractor shouldn’t wait weeks for cooling system repairs. Send us your machine model (e.g., B2400D), engine type (D1105), and required quantity — we’ll email a competitive quote within 24 hours. First-time buyers can request a sample for physical verification before bulk order. Every day your equipment remains idle is revenue lost.

Frequently Asked Questions