Planning a Cummins 6BT (5.9L) rebuild? Knowing the parts cost breakdown helps you budget correctly and avoid surprises. Here is what a typical inframe overhaul costs in parts.
What an Inframe Overhaul Includes
- Piston kits (pistons, pins, rings) — the largest single line item
- Cylinder liners — replaced as a set of six
- Gasket set — head gasket, pan and cover gaskets
- Bearings — main and connecting rod sets
- Head work — head gasket plus machine-shop resurfacing of the head
Typical Parts Budget (6 Cylinders)
| Item | Approximate share of parts cost |
|---|---|
| Piston kits x6 | 35–40% |
| Cylinder liner set x6 | 15–20% |
| Full gasket set | 10–15% |
| Main & rod bearings | 10–15% |
| Oil pump, filters, small parts | 10–15% |
Buying a complete overhaul kit instead of individual parts typically saves 15–25% versus buying piece by piece — and guarantees all parts match the same application.
Get an Exact Price for Your Engine
Prices vary by part number and emission variant, so send us your engine serial number for an exact breakdown. Start with our 6BT5.9 rebuild kit OH3802100 or browse all 6BT parts. Contact us for a 24-hour quotation.
