Overview — Turbo Oil Drain Connection 2873984
2873984 is the turbocharger oil drain connection used on CUMMINS engines to return oil from the turbocharger bearing housing to the sump, carrying the oil away without restriction. We can supply all the original and replacement part numbers listed below, in stock or available on order — welcome to enquire by part number.
Parts Characteristics
The connection is formed to the original bore and fitting size, sized to pass the full oil return flow from the turbocharger. The material resists oil and engine heat, and the sealing faces match the original gaskets or O-rings. The bore is smooth to avoid trapping oil, and the drain path is angled so oil flows back to the sump without pooling. As an OEM-spec drain fitting, it maintains the correct oil return from the bearing housing.
Applicable Models & Applications
This drain connection is used on CUMMINS engine families where the turbocharger oil return routes through this fitting, including construction, industrial, generator and marine installations. The family includes 2893644, 2893646, 2896468, 3031716, 3043525, 3043527, 3044929, 3067993 and 3069128 covering related drain fittings. Confirm the fitting size, bore and sealing arrangement against the connection removed from your engine before ordering.
Maintenance & Replacement
Inspect the drain connection for cracks, collapsed sections and blocked bores at each turbocharger service. A restricted oil drain causes pressure in the bearing housing, forcing oil past the turbo seals and producing blue smoke. When replacing, fit new gaskets or O-rings, keep the drain path clear of the exhaust heat shield, and confirm the connection angle routes oil freely back to the sump. Check the sump level and oil pressure after installation.
Price Reference (USD)
The reference price for this Turbo Oil Drain Connection (2873984) is approximately USD 10 – 60 per unit depending on size, brand grade, quantity and shipping destination. This is a planning estimate only — confirm current pricing and availability with our sales team before ordering.
Also in the TURBO OIL DRAIN CONNECTION Series
2893644, 2893646, 2896468, 3031716, 3043525, 3043527, 3044929, 3067993, 3069128.
Value & Service
A blocked or cracked oil drain is a common cause of turbo seal failure, so we verify 2873984 against the original CUMMINS bore and fitting specification before dispatch. We stock the connection and the full family listed above and can consolidate orders with turbocharger service parts into one tracked shipment. Our team can advise on the correct drain routing for your installation.
Racer Machinery is a dedicated construction-machinery parts supplier — send us your part number and engine model, and we will confirm fitment, price and lead time for this drain connection and related CUMMINS turbocharger components.
