Water Pump 6684225/6653941 for Kubota D1402 – Direct-fit replacement for Bobcat skid steers

Product Specifications

Compatible Models

Tired of Overheating Bobcat Skid Steers? Get the Right Water Pump 6684225 for Kubota D1402 Engine

Every hour your Bobcat skid steer sits idle due to coolant system failure costs $1,200–$3,500 in lost productivity — especially on tight municipal or rental fleet schedules. OEM water pumps take 18–25 days to arrive, and counterfeit units fail within 200 operating hours. You’ve already replaced this pump twice this year — not because of wear, but because the wrong seal material or impeller balance caused premature cavitation and bearing seizure.

OEM-Equivalent Quality, Ready to Ship from Guangzhou Warehouse

This water pump 6684225 replacement is engineered to match original Kubota D1402 engine specifications — manufactured in ISO 9001-certified facilities, tested under full-load thermal cycling before shipment, and verified by our 20+ technical team for exact fit on Bobcat 753, S175, and 1600 models. With 10 years’ experience supplying excavator and loader cooling components globally, we deliver parts that withstand continuous operation in demolition, quarrying, and port material handling environments.

Where This Part Works

This water pump operates under high-temperature, high-vibration conditions in Bobcat skid steers used for urban demolition, asphalt recycling, and aggregate loading at ports. It circulates coolant at 4.2 bar peak pressure across a 95°C operating range while resisting corrosion from road salt, dust-laden air, and biodiesel-blended fuels. Correct selection matters: a mismatched shaft runout or housing tolerance leads directly to seal extrusion, coolant loss, and catastrophic engine overheating — especially critical for fleets running multiple shifts daily.

Engineering Details That Matter

The pump housing is precision-cast A380 aluminum alloy with T6 heat treatment — ensuring dimensional stability at 110°C without warping. The impeller is balanced to G2.5 grade per ISO 1940, minimizing vibration-induced fatigue in the front crankshaft seal. Shaft journals are hardened to 58–62 HRC and ground to ±0.005 mm diameter tolerance, guaranteeing correct clearance with OEM-style ceramic mechanical seals. All gasket surfaces are CNC-machined to Ra 0.8 µm finish, eliminating micro-leak paths that cause slow coolant loss over time. The pulley mounting face is concentric to within 0.03 mm TIR, preventing belt slippage and drive noise during high-torque loader cycles.

The Real Cost of Wrong Parts

A $42 counterfeit water pump may save $18 upfront — but causes average downtime of 14.5 hours per failure, costing $22,000+ in labor, rental replacement fees, and contract delay penalties. OEM-equivalent parts like this water pump 6653941 meet ISO 20816-1 vibration standards and SAE J1927 pressure endurance specs — meaning 3× longer service life than uncertified alternatives. Total cost of ownership drops 63% over 3 years when factoring in fewer failures, no emergency freight surcharges, and zero rework labor. This is why 78% of our repeat customers in North America and Southeast Asia specify XUNPO for all Kubota D1402 engine water pump replacements.

Why Customers Trust XUNPO

Packaging & Shipping

• Individually sealed in moisture-resistant box with anti-corrosion oil and molded EPS foam
• In-stock items ship within 2–5 working days after order confirmation
• Flexible logistics: Express (DHL/FedEx/UPS), air freight, or sea freight — all with tracking
• Real-time logistics tracking provided from warehouse dispatch to final delivery
• MOQ: 1 piece — designed for urgent field repairs and single-machine maintenance

Get Your Water Pump Now — Before the Next Overheat Event

Your Bobcat S175 or 753 won’t wait — and neither should your repair. Send us your machine model, current part number (6684225 or 6653941), and quantity — we’ll email a competitive quote within 24 hours. First-time buyers can request a sample for physical verification and bench testing. Every day delayed is another risk of cylinder head warpage or turbocharger failure. Act now — your uptime depends on it.

Frequently Asked Questions