
CAT 225-7741 Water Pump Connector with O-Rings
CAT 225-7741 Water Pump Connector with O-Rings. Water pump coolant connector for selected Caterpillar applications. Public CAT specifications and compatible-model examples are listed below; confirm fitment by serial number. Contact RUIPO for stock status and international quotation.
CAT 225-7741 Water Pump Connector with O-Rings
CAT 225-7741 Water Pump Connector with O-Rings is identified by Caterpillar part number 225-7741. Links coolant-system components at the water pump using a mounting and O-ring-sealing arrangement. CAT describes two mounting bolts and two O-ring grooves; these physical features help identify the correct housing connector during maintenance. This listing is intended for engineers, fleet maintenance teams and international B2B parts buyers who need a clear product specification and a defensible method of checking the application before ordering.
Product Overview and Function
Links coolant-system components at the water pump using a mounting and O-ring-sealing arrangement. CAT describes two mounting bolts and two O-ring grooves; these physical features help identify the correct housing connector during maintenance.
Even inexpensive service parts can determine whether a larger repair succeeds. Dimensions, mating geometry, material and installation sequence should be checked against the exact manufacturer drawing rather than assuming that another component with a similar appearance is interchangeable.
Key Product Features
- Water-pump coolant connector with O-ring sealing grooves
- CAT lists a two-bolt mounting arrangement
- Two O-ring grooves on the connector
- Used in specified C4.4 and other CAT cooling-system equipment
Technical Specifications
| Specification | Details |
|---|---|
| Brand / part identification | Caterpillar / 225-7741 |
| Part number without hyphen | 2257741 |
| Product type | Water pump coolant connector |
| Part number | 225-7741 |
| Product type | Water Pump Connector |
| Mounting | 2 bolts |
| Seal detail | 2 O-ring grooves |
| CAT-listed length | 4.3 in |
| CAT-listed width | 2.2 in |
| CAT-listed height | 1.1 in |
Technical data above is limited to publicly verifiable CAT product information. Unlisted dimensions, pressure ratings, torque values and electrical characteristics are not assumed. Please verify the current official drawing and applicable serial number before installation.
Compatible CAT Models and Applications
| Equipment Type | CAT Models / Applications |
|---|---|
| Industrial Engines | C4.4, C3.3, 3054C, 3054E |
| Generator Sets | C3.3, C4.4 |
| Excavators | 312D2, 315C, 320D2 |
| Backhoe Loaders | 416D, 420D, 430E |
Fitment guidance: Model numbers are representative applications from the Caterpillar public product listing, not a guarantee for every production year or serial number. Engine and machine configurations vary, so final compatibility must be checked in CAT SIS or with the relevant parts diagram before shipment.
Common Problems and Inspection Points
- Coolant seepage around this joint may indicate damaged O-rings, gouged grooves or a poorly seated connector.
- A worn hose or incorrect coolant pressure can produce similar visible symptoms; inspect the entire circuit.
Do not replace a component based on one symptom alone. Inspection should include the adjacent parts, installation condition and available equipment diagnostics so that a new part is not installed into an unresolved system fault.
Installation and Maintenance Notes
- Fit new seals in clean grooves and lubricate them only if the CAT manual specifies the approved assembly fluid.
- Install the connector squarely and use the correct bolt and torque sequence; avoid forcing a misaligned joint.
The original failure should be understood before new parts are installed. Clean sealing surfaces, correct fasteners, controlled tightening and inspection of adjacent parts are often as important as the replacement component itself. Use the applicable Caterpillar service manual for torque figures, clearance settings, calibration instructions and safe test procedures; those values can differ between engine arrangements.
Before Ordering
- Check connector dimensions, two-bolt pattern and the pump configuration.
- Ask for a clear photo of the removed connector and engine serial number if the outlet arrangement is uncertain.
- Please send the requested quantity, shipping destination, engine or machine serial number, and photographs of the old part or packaging if available.
Related CAT Parts
For other components used in related engine or maintenance systems, review these RUIPO product listings. They are cross-references for sourcing and are not a claim of direct interchangeability:
Why Choose RUIPO Spare Parts
- CAT part-number-based sourcing for professional maintenance and procurement teams.
- Assistance checking fitment against your engine or machine model and serial number.
- International B2B quotations, packing confirmation and export-shipping coordination.
- Clear communication on stock status and documentation before an order is confirmed.
Frequently Asked Questions
What is the CAT 225-7741 part used for?
Links coolant-system components at the water pump using a mounting and O-ring-sealing arrangement. CAT describes two mounting bolts and two O-ring grooves; these physical features help identify the correct housing connector during maintenance.
Which Caterpillar models are compatible with 225-7741?
Public Caterpillar parts data lists selected examples including Industrial Engines: C4.4, C3.3, 3054C, 3054E; Generator Sets: C3.3, C4.4; Excavators: 312D2, 315C, 320D2. This is an application guide only; confirm compatibility by serial number and engine arrangement.
What should be checked before purchasing?
Please confirm the original CAT part number, equipment/engine model, serial number, correct mounting arrangement and quantity. For repair jobs, ask whether related seals or hardware are required.
Can RUIPO help with international supply and part identification?
RUIPO Spare Parts can review the part number and your equipment information, check current stock and available packaging, and prepare a quotation with shipping details. Product availability is not guaranteed until confirmed.
Request a quote: Contact RUIPO Spare Parts with the CAT part number, required quantity, destination country and serial-number information. We can check the details before an export quotation is issued.

