Water Pump 1273085C91 Replacement for CASE IH 234 244 OE Interchange

Verified Cross-Reference — Superseded numbers 1273085C91 and 1962912C1 mapped across eleven CASE IH tractor builds before dispatch.

Technical Specifications

Application Suitability

Why the Same Part Number May Not Fit Every Tractor in the Field

Superseded numbers and variant differences across the CASE IH 234–1140 range require serial-level verification before any Water Pump ships.

I once watched a repair bay sit idle for a full week because a Water Pump for CASE IH 234 244 255 275 1140 / cross reference arrived with the correct part number stamped on the box, yet the impeller interface had been revised mid-production on the 254 series. The old manual listed 1273085C91, but the tractor in front of us had already crossed the serial break where CASE IH updated the mating geometry. Cross-reference tables copied between sellers carry these errors forward, and the cost is never just the return freight — it is the harvester waiting on a trailer while cotton season shrinks. [NEED_CITE: agricultural equipment superseded part number tracking across serial breaks]

Fitment Range Across Eleven CASE IH Tractor Models

This Water Pump for CASE IH 234 244 255 275 1140 / cross reference covers the full span from compact 234 units up through the 1140 large-frame tractors. The base casting shares common mounting architecture, but gasket profiles and port orientations shift between sub-models. We verify each order against the specific machine model and serial number you provide, not just the number printed on a worn nameplate.

Interface Details That Separate a Fit From a Return

The mounting bolt pattern, coolant port orientation, and belt pulley offset must all align with the existing installation. On the 255 and 265, the thermostat housing flange sits at a different clocking angle than on the 244, even though both accept the same base pump casting. We check port position and gasket profile against your tractor's build configuration before the unit leaves our Guangzhou facility. [NEED_CITE: CASE IH tractor cooling system interface variation across model generations]

Reading the Specifications That Actually Matter in the Field

The AISI 4140 steel impeller resists cavitation erosion that eats through softer alloys during sustained high-RPM harvest operations. G6.3 balance grade keeps belt-driven vibration within limits that protect the front crankshaft seal from premature wear. The dual-lip nitrile shaft seal rated to 120°C handles the thermal cycling that occurs when a tractor moves from idle in a headland to full load in a heavy stand — temperature swings that cause single-lip seals to weep within one season. Dimensional tolerance held to ±0.05 mm means the pump mates to the block without shimming or forcing bolt alignment, which is the difference between a ten-minute swap and a half-day fabrication exercise.

What Happens When the Wrong Variant Goes on the Engine

A pump that bolts up but has the wrong impeller depth circulates coolant at reduced volume, and the first sign is not an overheat warning — it is a slow temperature climb under load that the operator attributes to ambient heat. By the time the gauge reads critical, cylinder head gasket degradation has already started. A Water Pump for CASE IH 234 244 255 275 1140 / cross reference that matches on paper but not on the block creates the most expensive kind of downtime: the kind you do not see coming until the head is off. [NEED_CITE: diesel engine coolant flow reduction effects on cylinder head gasket life]

Why Sourcing Through a Verification Process Pays Off

Our own production lines and qualified sourced supply both carry the same QC protocol and warranty terms, so you get consistent quality whether the pump comes from our facility or a partner plant. Eight product categories under one account means if your repair list also calls for thermostats, hoses, or seal kits, everything ships in one consignment. We accept orders from one piece, which matters when a single tractor is down and you do not need a shelf full of spares. Part identification works from a number, a machine model, a photograph of the old unit, or even a painted-over nameplate — our technical team pulls the correct variant. Cross-reference verification covers superseded and alternate numbers so you know whether 1273085C91 or 1962912C1 applies to your specific build. And if you are equipping an entire fleet, a sample unit goes out first so you can confirm physical fitment before committing to bulk.

Documentation & Verification

• Commercial invoice listing each Water Pump with matching CASE IH model reference
• Cross-reference sheet showing 1273085C91 and 1962912C1 interchange status (reference only)
• Dimensional inspection record covering port spacing and gasket surface flatness
• Warranty terms covering manufacturing defects for six months from delivery
• Packing photographs showing gasket protection and impeller safeguard before crating
• HS code and customs documentation support for agricultural machinery parts import

Fitment Check Before Installation

• Compare old pump bolt pattern and port clocking against the new unit before removing the old gasket surface residue
• Verify the included fiber-reinforced silicone gasket matches the block sealing land profile on your specific CASE IH variant
• Check impeller clearance by rotating the shaft by hand after dry-fit to confirm no contact with the housing volute
• Confirm belt pulley offset aligns with adjacent accessories to prevent tracked belt wear within the first operating hours
• If any dimension does not match, halt installation and contact us with photographs for replacement verification

Send Your Machine Details for a Fitment Answer

Provide the full CASE IH model number and serial number from the chassis plate, or a clear photograph of the existing Water Pump and its gasket surface. If the nameplate is unreadable, a photo of the engine block casting number and the old pump's mounting face gives us enough to confirm the correct variant. For fleet orders, tell us which models are in the lineup and we will map each one to the right part number before you commit.

Frequently Asked Questions

Q: How do I confirm this Water Pump fits my specific CASE IH tractor model and serial number? A: Send us the full model designation and the serial number from your chassis or engine plate. We cross-check against service documentation to confirm which variant of the pump your tractor requires, including any mid-production interface revisions that affect gasket profile or port orientation. If the plate is gone, a photograph of the old pump works.

Q: Are 1273085C91 and 1962912C1 interchangeable on the same machine or do they apply to different builds? A: These numbers are superseded or alternate references for the same application range, but not every tractor within the 234–1140 series uses identical interfaces. We verify which number maps to your specific serial range and confirm whether the gasket and port layout match your block. Ordering one without this check risks receiving a pump that bolts on but does not seal or circulate correctly.

Q: What if I only have the machine model and no readable part number? A: A model number is a valid starting point. Share the CASE IH model along with any visible casting marks on the old pump or engine block, and we narrow down the correct variant. Photographs of the mounting face, port positions, and pulley alignment help us eliminate variant differences that a cross-reference table alone cannot resolve.

Q: Can I get a sample to verify fitment before ordering for the whole fleet? A: Yes. We supply a single sample unit so your workshop can physically confirm bolt pattern, gasket match, and pulley offset on one tractor before you place a larger order. This eliminates the risk of receiving a batch that fits most of your machines but not all of them due to serial-range variations.

Q: Does the included gasket match the sealing surface on my specific tractor variant? A: The fiber-reinforced silicone composite gasket shipped with each pump is selected to match the CASE IH block sealing land for the confirmed model and serial range. We do not ship a universal gasket and leave compatibility to chance. If your tractor has a non-standard block from a previous overhaul, send us a photograph and we verify the profile before dispatch.