The seal retainer 4066129 (also supplied under cross-reference numbers 4001322 and 4006947) is a critical seal retention housing component designed for CUMMINS K60 and related K-series high-displacement engines.
Application across CUMMINS K-Series Platforms
Industrial diesel engines operating in heavy equipment require absolute seal integrity. The 4066129 seal retainer is widely utilized across large-displacement engine families:
- Engine Compatibility: Fits CUMMINS K60, K38, K45, K50, and K78 engine blocks used in mining haul trucks, draglines, marine vessels, and primary power generators.
- Leak Prevention: Holds elastomeric and PTFE oil seals firmly in position to prevent engine lubricant loss during extended duty cycles.
- Thermal Stability: Engineered metal metallurgy resists thermal warping and vibration looseness over long operational service hours.
Technical Specifications & Interchange Reference
| Specification | Details |
| Primary OEM Part Number | 4066129 |
| Interchange Part Numbers | 4001322 / 4006947 |
| Focus Keyword | K60 |
| Additional Keywords | CUMMINS K60, 4066129 |
| Compatible Engines | CUMMINS K38 / K45 / K50 / K60 / K78 |
| Category | Engine Block & Crankcase Sealing |
Frequently Asked Questions
Q: Are part numbers 4066129, 4001322, and 4006947 fully interchangeable?
A: Yes, 4066129, 4001322, and 4006947 share identical mounting bolt dimensions and inner seal diameter specifications across the CUMMINS K60 engine family.
Q: Which engine models use this seal retainer?
A: This seal retainer is built for CUMMINS K60 engine units as well as K38, K45, K50, and K78 engine variants operating in mining, industrial drive, and marine installations.
Q: How do I confirm fitment before placing a bulk order?
A: Provide your Engine Serial Number (ESN) or current housing part number to our technical sales team for instant cross-reference checking.
Commercial Supply & Support
We supply original and heavy-duty replacement components for CUMMINS K60 and K-series engines to fleet maintenance hubs, repair yards, and spare parts distributors worldwide.
Need assistance with your order or fitment verification? Contact our team today for fast quotes and technical support.
