Overview — Cylinder Liner 4309389
Overview
Cylinder Liner 4309389 is a commonly used spare part in construction machinery. We can supply all the original and replacement part numbers listed below, in stock or available on order — welcome to enquire by part number.
Applicable Models & Applications
These liners serve Cummins engine blocks, providing the bore surface the piston and rings work against. Suitable for the corresponding machine model and configuration — please verify the machine model, serial number and part number match before ordering.
Maintenance & Replacement
Measure liner bore and taper at every major overhaul; replace liners, or liner/piston sets, when wear exceeds the maker's limit or glazing/scoring appears in the ring travel. Early signs it may need attention: Rising oil consumption with a bluish exhaust on a hard-worked engine; A loss of compression that mirrors worn rings and a tapered bore, especially at a cold start; Coolant in the oil, which can follow a cracked or leaking liner flange seal.
Installation Essentials
Work on a clean machine with the engine off and the relevant system drained or depressurised as required, and confirm the part number against your machine model and serial number before ordering. Fit liner protrusion and, where used, a controlled press or sealant exactly as specified. Break-in new liners with the recommended oil and load schedule to seat the rings. After installation, run the machine and check for leaks, unusual noise or abnormal travel before returning it to service, and retighten where the manual calls for it after the first hours of operation.
Reference Price
The reference price for this Cylinder Liner (listed under 4309389) is approximately USD 105 – 240 per unit, depending on configuration, quantity and shipping destination. This is an estimate for planning purposes — please confirm current pricing and availability with our sales team before ordering.
Available Part Numbers
- 4309389
Also in the Cylinder Liner Series
Same-series, real numbers we also supply (always confirm fit and interchange against your machine): 4025311, 4089153, 4101507
Whether you need one unit or a fleet batch, Racer Machinery verifies every Cylinder Liner against the machine it is meant for, so you buy the right match the first time. Send us your part number and machine model for a quote.
