4K9984 New Idler Shift Fits Caterpillar Industrial Construction Model D4D
4K9984 New Idler Shift Fits Caterpillar Industrial Construction Model D4D
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$136.82 USD
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$136.82 USD
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One New Aftermarket Replacement Idler Shaft Fits Caterpillar (Fits CAT) D4D Track-Type Tractor
This aftermarket replacement front idler shaft is Fits Caterpillar (Fits CAT) D4D track-type tractor (dozer). The idler shaft is a critical undercarriage component that supports the front idler assembly, maintaining proper track tension and guiding the track chain for stable, efficient operation. Replaces OEM Fits Caterpillar part number 4K9984 (also referenced as 4K-9984).
Specifications
- Weight: approximately 11.5 lbs.
- Assembly position: Front idler
- Undercarriage system component
Compatible Models
Fits Caterpillar (Fits CAT) Track-Type Tractors: D4D
Replaces Part Number(s):
4K9984, 4K9984-A, UNN60-0020, CR2047
New aftermarket replacement part - not remanufactured, not used.
