497-8288 497-8300 coupling CAT bulldozer parts

497-8288 497-8300 coupling CAT bulldozer parts

The 497-8288 and 497-8300 couplings are core connecting components of the Caterpillar bulldozer’s hydraulic system, oil cooling circuit, and piping system. They strictly adhere to Caterpillar’s original equipment manufacturing standards, dimensional tolerances, and fluid performance specifications, and are specifically designed for the harsh operating conditions of bulldozers, including heavy loads, high pressure, strong vibrations, dust, and high temperatures. Both are primarily used for stable oil circuit connection, smooth oil transmission, and high-pressure sealing to prevent leaks. They effectively prevent insufficient pressure, abnormal oil temperature, power loss, and equipment shutdown caused by loose connections, seal failure, leakage, and air intake. They are the preferred original equipment manufacturer (OEM) parts for Caterpillar bulldozer oil circuit maintenance, cooling system repair, and complete machine overhauls, and are widely applicable to various harsh working conditions such as mining, infrastructure construction, earthmoving, and continuous heavy-duty operations.

The 497-8288 coupling, as the main connector in the bulldozer’s oil circuit system, undertakes the functions of high-pressure pipeline connection, oil transmission, and leak-proof sealing. The connector is precision-machined from high-strength alloy material, with an overall structure that is pressure-resistant, vibration-resistant, and anti-loosening, capable of withstanding long-term oil circuit pulse pressure and equipment operating vibration. The internal flow channels are smooth and unobstructed, with minimal pressure loss; flow rate and pressure drop meet original manufacturer design requirements. Interface dimensions, sealing grooves, and mating face precision fully meet standards, ensuring a tight fit with matching seals and the housing, providing reliable sealing, preventing leakage and air ingress. Installation and positioning are precise, requiring no additional adjustments.

The 497-8300 coupling, as a matching connector, works in conjunction with the 497-8288 to form a complete oil circuit connection system, primarily used for pipeline transitions, branch connections, and fixing of critical components. Made of high-temperature resistant, oil-resistant, and corrosion-resistant alloy materials, these connectors can withstand the high-temperature operating environment around the engine, are not easily deformed or aged, and offer high connection strength with excellent torsional and impact resistance, maintaining reliable sealing even under continuous vibration and pressure fluctuations. The mounting holes and mating dimensions are consistent with the original manufacturer, and when used with the 497-8288 connector, they achieve a stable full-circuit connection from the main line to the branches, providing reliable protection for the machine’s hydraulic, lubrication, and cooling systems.

Both accessories are manufactured according to Caterpillar’s original equipment manufacturer (OEM) quality specifications and have passed rigorous testing under various conditions, including pressure resistance, temperature resistance, vibration resistance, leak prevention, pulse fatigue, and salt spray testing. Their stable and reliable performance allows for direct replacement of OEM parts without modification or secondary processing, effectively shortening maintenance time and reducing downtime costs. Whether for routine maintenance, pipeline inspection, cooling system repair, or complete machine overhaul, the CAT 497-8288 and 497-8300 connectors provide stable compatibility with Caterpillar bulldozer hydraulic systems, improving equipment reliability and lifespan, reducing operating and maintenance costs, and are suitable for all corresponding Caterpillar bulldozer models.

Core Technical Parameters

Compatible Models: All Caterpillar bulldozer models

497-8288 Connector: High-strength alloy structure, original factory standard interface, pressure and vibration resistant, precise sealing groove

497-8300 Connector: Temperature and pressure resistant material, adapter connection structure, anti-loosening and leak-proof, unobstructed flow path

Quality Standards: Complies with Caterpillar’s original factory design and testing specifications, passed pressure, sealing, vibration, and thermal cycling reliability tests

Core Advantages

Precise original factory specification fit, direct installation without modification; tight seal without leakage, strong pressure and vibration resistance; oil, temperature, and corrosion resistant, long service life under harsh working conditions; two matching sets for more stable hydraulic circuit connections; quick and efficient installation, reducing downtime; comprehensive protection of the hydraulic system safety, improving equipment uptime.

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0S-1604 Bolt
6V-3319 Seal-Oring
9W-4163 Race-RLR BRG
173-0888 Univ JT – Equivalent to Spider Gp
9H-3360 Seal-O-Ring (Final Drive Ar)
4H-6730 Seal-O-Ring
8E-8994 Seal-Ring
136-2967 Seal-O-Ring
468-3266 Valve Gp-MDL
3P-0653 Seal-O-Ring
361-7171 Seal-Lip Type
557-0249 Converter Gp-Torque
571-0489 Clutch Gp – Steering
2M-9780 SEAL-O-RING-STOR
6Y-3484 Bearing-Ball
3P-3441 Ring-Retaining
3T-3601 Ring-Spacer
8M-4389 Seal-O-Ring
3T-3602 Ring-Spacer
237-1016 Housing – Brake
106-0472 Hub – Input (No Output like D11)
9G-2991 Ring-Seal
6T-0234 Retainer
7T-6994 Plate-Clutch
6T-0842 Plate
219-7239 Spool
3T-4717 Spring
6T-0841 Plate
116-2592 Ring-Seal
6T-0840 Ring-Seal
255-9267 Disc As – Friction
364-2636 Disc-Friction
480-7885 Plate-Separator
106-0476 Retainer
282-4029 Final Drive
110-2780 Final Drive Arctic
452-0328 Hub – (Retainer already was captured did not have hub yet)

*For other spare parts procurement needs, please contact us!