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Caterpillar · Electrical & Lighting
6V-8639
In stock · ships from Knoxville
This is a Caterpillar hydraulic adapter, specifically a straight O-Ring Face Seal (ORFS) connector.
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Verified fitment for 1 applications
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All confirmed applications for this part number.
Caterpillar
Caterpillar
Primarily used on Caterpillar machinery; actual fitment depends on the hydraulic system design. Verify by machine model and serial number with an OEM parts catalog. The adapter is also compatible with any system using ORFS straight fittings, but is commonly supplied as a Cat part.
Part data verified against 5 catalog sources
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It connects hydraulic hoses or tubes to pumps, cylinders, or valves on heavy equipment, providing a leak-free, high-pressure seal. Replace it if the threads are damaged, the O-ring seat is worn, or the adapter is corroded, causing fluid leaks. Available as a genuine OEM Caterpillar part or an aftermarket replacement meeting OEM specifications [partsnonstop.com](https://partsnonstop.com/product/cat-connector-6v-8639/) [jscatparts.com](https://www.jscatparts.com/cat-connector/67004378.html).
Part Number: 6V-8639
CONNECTOR
Unit: ea
Dealer: KP Services Crossville
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