Water Pump 1G772-73032 | Direct Fit for Kubota V3307 SVL75 M5040

Verified Cross-Reference — Fourteen alternate numbers mapped to specific Kubota V3307 serial ranges and machine variants.

Technical Specifications

Application Suitability

Why the Same Water Pump 1G772-73032 for Kubota V3307 Fitment Cross Reference Covers Fourteen Numbers

Superseded numbers do not always mean universal interchange — variant-specific port layouts and mounting patterns split what looks like one part into several.

I once had a buyer send a purchase order for 1G772-73032, confident the number matched his Kubota V3307. The part number was technically valid for the V3307 family, but his specific SVL75-2 build used a water pump with a different coolant port orientation. The pump physically bolted to the block, yet the hose routing would not clear the loader frame. This is the fitment trap that makes Water Pump 1G772-73032 for Kubota V3307 fitment cross reference work more involved than copying a number from a forum table. Across the fourteen reference numbers associated with this pump, some cover early-production engines while others apply only to turbocharged V3307T variants or specific machine serial breaks [NEED_CITE: Kubota engine serial break identification practices for V3307 variants].

Application Suitability

Serial Range and Variant Coverage Across the Kubota Lineup

This water pump serves a broad cross-section of Kubota equipment powered by the V3307 engine family — naturally aspirated V3307, direct-injection V3307-DI, and turbocharged V3307T. The machine list spans KX080 compact excavators, SVL75 track loaders, SSV75 skid steers, and the extensive M-series tractor range from M5040 through M7060. Within each machine family, sub-model suffixes matter: an M7040HDC-1 may carry a different pump variant than an M7040SU, even though both sit under the same base model designation. Confirming the exact sub-model and engine serial eliminates the guesswork that leads to fitment failures on arrival.

Port Position, Pulley Alignment, and Mounting Pattern Verification

The critical interfaces on this water pump are the coolant inlet and outlet port positions, the pulley mounting face and bolt circle, and the block-mounting flange pattern. Kubota used several housing castings across V3307 production runs, and the external hose routing on a compact loader like the SVL75-3 differs from that on an M6040 tractor because of surrounding frame and cab structures. Before confirming an order, we cross-check port clocking and pulley offset against the buyer's machine serial or a photograph of the original pump. This step catches the variant mismatches that a part number alone cannot reveal [NEED_CITE: coolant system port orientation differences across Kubota V3307 machine platforms].

Reading the Specs That Matter for Fitment Accuracy

The V3307 engine family displaces 3.3 liters across three aspiration configurations, and the water pump must deliver adequate coolant flow for each. The turbocharged V3307T generates higher thermal loads, demanding a pump with sufficient impeller capacity to maintain stable operating temperature under continuous high-load work. The impeller design and housing internal passages are matched to the engine's thermostat opening pressure and radiator circuit resistance. Mounting face flatness and gasket surface finish are controlled to prevent weeping at the block joint, which on these engines is accessible only after removing surrounding components. The aftermarket units supplied here are produced in ISO-certified facilities and carry the same warranty terms whether from our own production lines or qualified sourcing partners.

The Cost of Installing a Pump That Almost Fits

A water pump that bolts on but has ports rotated even slightly wrong forces the technician to reroute hoses under tension, which accelerates hose fatigue and clamp failure. In a compact machine bay like the SVL75-2, there is no room to improvise hose paths — the pump either matches the original casting geometry or it does not. When a mismatched pump is forced into service, early leaks at stressed hose connections show up within weeks, often mistaken for a defective part rather than a fitment error. The machine goes back down, the repair is repeated, and the real cost is the second round of labor and downtime [NEED_CITE: field failure analysis of misfitted coolant system components in compact equipment].

Why Buyers Confirm Fitment Here Before Committing

Our technical team verifies Water Pump 1G772-73032 for Kubota V3307 fitment cross reference against machine serial numbers, not just part number lists. We produce selected part lines in our own Guangzhou facility and source the remainder from qualified ISO-certified partners — both channels carry identical QC and warranty terms. Buyers can start with a machine model, a worn nameplate photograph, or an illegible part number and receive a confirmed match. A sample unit ships for physical fitment verification before any fleet-level or bulk commitment. One piece is a valid order, so an emergency replacement does not require padding an order to meet a minimum. Cross-reference verification covers all fourteen associated numbers including superseded references that other suppliers may have dropped from their listings.

Documentation & Verification

• Commercial invoice listing each confirmed cross-reference number as reference only
• Part compatibility sheet matching your machine serial to the correct V3307 variant
• Dimensional check record covering port spacing, bolt pattern, and pulley offset
• Warranty terms document specifying coverage period and manufacturing defect scope
• Packing photographs showing pump condition and protective wrapping before dispatch
• HS code and customs classification support for smooth import clearance

Fitment Check Before Installation

• Compare new pump mounting flange bolt pattern against the removed original unit
• Verify coolant port clocking matches hose routing path on your specific machine model
• Check pulley face offset and bolt circle against the original pump before belt installation
• Confirm impeller rotation direction matches V3307 engine rotation as viewed from drive end
• Dry-fit the pump to the block without gasket to verify flush seating before final assembly
• If any dimension does not align, halt installation and contact our technical team with photos

Requesting an Accurate Fitment Match

Provide your machine model with the full sub-model suffix (such as SVL75-2C or M7040HDC-1), the engine serial number from the V3307 nameplate, or clear photographs of the existing pump showing port positions and the casting number. With these details we confirm which of the fourteen cross-reference numbers applies to your specific build and verify interface compatibility before anything ships.

Frequently Asked Questions

Q: How do I confirm this pump fits my specific Kubota machine model and serial number? A: Share the full machine model with its suffix designation and the engine serial from the V3307 nameplate. We cross-reference these against the applicable part number variant, checking port orientation, mounting pattern, and pulley offset for your specific serial break. A fitment confirmation sheet is provided before dispatch.

Q: My old part number differs from 1G772-73032 — is it still the correct replacement? A: Kubota superseded several numbers in this pump family over multiple production runs. Numbers like 1G772-73030, 1G772-13122, and 1G772-73035 may all reference the same application depending on your engine build. Send the old number and your machine model, and we verify whether it maps to the current replacement.

Q: I only have the machine model with no readable part number — can you identify the right pump? A: Yes. Provide the machine model, sub-model suffix, and ideally the engine serial or a photo of the nameplate. We use these to narrow down which V3307 variant your machine carries and confirm the correct water pump configuration from the cross-reference table.

Q: Can I order a sample to verify fitment before placing a larger order? A: A single sample unit is available for physical fitment verification. Install it on one machine, confirm port alignment, bolt pattern, and pulley match, then proceed with confidence on the remaining units. Sample orders carry the same warranty terms as bulk shipments.