Water Pump SBA145017721 Replacement for New Holland TC OE Interchange

Verified Fitment — Cross-reference chain validated across four Shibaura ISM N844 variants to eliminate trial-fitment downtime.

Technical Specifications

Application Suitability

Why the Same Water Pump SBA145017721 Ships Under Four Part Numbers

Superseded references do not mean identical casting — each number maps to a specific engine build variant within the Shibaura ISM family.

Buyers holding an old tag that reads SBA145017780 or SBA145017790 often assume any pump with that lineage will bolt on. The reality is that mounting hole spacing, port orientation, and pulley offset shift between the N843-C, N844, and N844LT-C blocks, even though the external silhouette looks the same [NEED_CITE: Shibaura ISM engine variant identification guide for compact tractors]. Copied cross-reference tables between sellers carry forward errors from one generation to the next, and a wrong water pump means the tractor sits idle while the correct unit ships. This Water Pump SBA145017721 for New Holland TC Series cross reference fitment sheet resolves that chain by mapping each reference number to the exact engine serial range it serves.

Tracing the Cross-Reference Chain Across Engine Variants

The SBA145017721 sits at the current end of a supersession line that includes SBA145017790, SBA145017780, and SBA145017730. Each earlier number was assigned to a particular production run of the ISM N844 or N843 engine family. When Shibaura revised the block casting or changed the thermostat housing interface, the part number shifted accordingly. Confirming which reference applies to your machine requires the engine serial, not just the tractor model badge. Our cross-reference verification covers all four numbers so that whether your tag is faded, painted over, or shows a discontinued reference, the correct Water Pump SBA145017721 for New Holland TC Series cross reference fitment is confirmed before dispatch.

Bolt Pattern, Port Orientation, and Pulley Alignment Checks

A pump that physically bolts on can still fail early if the inlet and outlet ports face the wrong direction or the pulley sits a few millimetres off the belt plane. On the N844L-C and N844LT-C turbocharged variants, the coolant outlet angle differs from the naturally aspirated N844, even though the block mounting face is shared [NEED_CITE: coolant system port orientation differences across turbocharged and NA diesel variants]. Before we release an order, we check port clocking against the engine block diagram for your serial range. For fleet buyers replacing across mixed New Holland and Ford tractors, we recommend a single sample fitment to verify hose routing and belt alignment before committing the full quantity.

Reading the Specs That Actually Matter for Coolant Flow

The compatible engine list spans six Shibaura ISM designations, each with a different displacement and thermal load. The N844T and N844LT-C run higher combustion temperatures, demanding a pump impeller that moves sufficient volume at typical tractor operating RPM to prevent localized hot spots in the cylinder head. Condition as new aftermarket means the casting, impeller, and bearing assembly are manufactured to match the original dimensional envelope, not remanufactured from a returned core. The 3-12 month warranty covers manufacturing defects in the casting and bearing, giving a meaningful coverage window for seasonal agricultural use. ISO factory certification ensures the machining tolerances on the mounting face and shaft seal seat are held within specification across production batches.

The Hidden Cost of a Fitment Guess

Ordering a pump based on visual similarity alone leads to one of two outcomes: it does not bolt on at all, requiring return freight and a second round of downtime, or it bolts on with a slight misalignment that wears the shaft seal prematurely. A seal that leaks after a few hundred hours forces a repeat teardown, new gaskets, and coolant flush — costs that dwarf the price of a verified unit in the first place [NEED_CITE: premature water pump shaft seal failure causes in compact diesel tractors]. For machines already down during a critical work window, a single wrong-order cycle can stretch the repair into a multi-week delay.

Why Buyers Source This Pump Through XUNPO

Own production lines and qualified sourced supply carry identical QC and warranty terms under one account, so whether this water pump comes from our facility or a partner line, the inspection standard is the same. Eight product categories mean associated items — thermostat, gaskets, coolant hoses, belt — ship in one consignment, eliminating split freight. Minimum order is one piece, so a single emergency replacement moves as fast as a fleet order. Guangzhou warehouse stock on common Shibaura-compatible items allows rapid dispatch when lead time matters. Part identification works from the number, the machine model, a photograph of the old pump, or a nameplate image. Cross-reference verification covers superseded and alternate numbers across the full SBA145017721 lineage.

Documentation & Verification

• Commercial invoice and packing list matching SBA145017721 and declared HS code
• Compatibility sheet mapping SBA145017790, SBA145017780, SBA145017730 as reference only
• Dimensional check record covering bolt spacing and port clocking
• Warranty terms stating coverage scope for casting and bearing defects
• Packing photographs showing protective wrapping before crate closure

Fitment Check Before Installation

• Compare mounting bolt pattern on the new pump against the old unit or block diagram
• Verify inlet and outlet port orientation matches existing hose routing
• Check pulley offset and shaft diameter before fitting the drive belt
• Confirm shaft seal is seated flush and undamaged after transit
• Perform a low-pressure coolant fill and visual leak check before full start

Inquiry Guidance for Accurate Quoting

Send the machine model, engine serial number, or a photograph of the existing pump and its nameplate. If the tag is worn, a picture of the engine block casting number lets us trace the correct variant. For fleet orders across mixed New Holland TC and Ford tractors, provide the full unit list so we can map each machine to the applicable cross-reference number and confirm availability in a single response.

Frequently Asked Questions

Q: How do I confirm SBA145017721 fits my specific tractor when I only have the machine model? A: The machine model narrows the range, but engine serial confirms the exact variant. Send your tractor model and any visible engine plate number. We cross-check against the ISM N844 family mapping and return a confirmed fitment statement before you order, covering all TC25 through TC55DA and Ford 1720–3415 units.

Q: My old part number is SBA145017780 or SBA145017790 — does SBA145017721 replace it? A: In many cases yes, but not universally. Each superseded number was assigned to a specific engine build within the Shibaura ISM family. We verify your engine serial against the full cross-reference chain — SBA145017790, SBA145017780, SBA145017730 — to confirm interchange compatibility before dispatch.

Q: Why are there four different part numbers listed for what looks like the same water pump? A: Shibaura revised the ISM N844 block casting, thermostat interface, and port layout across production generations. Each revision received a new reference number. The external profile remained similar, but bolt spacing or port clocking shifted. Our cross-reference sheet maps each number to its applicable serial range.

Q: I only have the machine model, not the engine serial — can you still confirm fitment? A: Often yes, especially for tractors where only one engine variant was installed in that model. For models that spanned a production changeover, we may request a photograph of the engine block casting mark or the old pump to eliminate ambiguity. This avoids shipping a unit that fits the model badge but not the actual block.

Q: Can I order one sample to test fit before placing a larger order for my fleet? A: Yes, minimum order is one piece. We recommend a sample fitment for fleet buyers running mixed New Holland and Ford tractors. Once fitment is confirmed on one machine, the bulk order ships with the same verified cross-reference and QC documentation applied to every unit.