// Q&A · Maintenance & Troubleshooting
Cat 259D final drive oil capacity: how much oil does it hold?
Expert Answer
A Cat 259D final drive is a small sealed gear case, and the oil capacity can vary by exact final drive version and side. The safest approach is to confirm the capacity against your machine serial number and the final drive tag before adding oil. If you are servicing a replacement drive from VANROCK Drives, it ships fully assembled and filled with oil, ready to bolt on. We sell brand-new OEM-specification final drive-track motors online at vanrockdrives.com with fast, free shipping, prices that include duties and shipping, no core charges, and a Limited Lifetime Warranty. Caterpillar is an independent OEM and VANROCK Drives is not affiliated with Caterpillar. If you want, we can also help you identify the correct Cat 259D final drive type and fluid specification for your machine.
Answered by VANROCK specialists · Published 9/3/2026
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