3026924 Holset HT3B T46 Turbocharger for Cummins NT855 NTC855 Engine

3026924 HT3B T46 Turbocharger for Cummins NT855 NTC855 Engine

The 3026924 HT3B / T46 turbocharger is supplied for Cummins NT855 and NTC855 14.0L diesel engine applications. It is used for heavy-duty engine repair when the original turbocharger has low boost pressure, oil leakage, abnormal noise, worn shaft clearance or damaged compressor and turbine components.

Main Part Number and Ref Cross

The main part number for this page is 3026924. Ref Cross numbers such as 3018067, 3801967, 3803279 and 3529040 can be used for inquiry matching. Final confirmation should be based on the old turbocharger nameplate, engine model and removed sample photos before shipment.

Part Number: 3026924

Ref Cross: 3018067 / 3801967 / 3803279 / 3529040

Turbo Model: HT3B / T46 / ST-46 series turbocharger

Cooling Type: Oil cooled

Engine Model: Cummins NT855 / NTC855 14.0L diesel engine

Product Type: Engine Turbocharger

Application Notes

This turbocharger should be matched by the Cummins NT855 or NTC855 engine model and the old turbocharger part number. It can be checked for heavy equipment, generator set and industrial engine applications when the old turbocharger number matches 3026924 or its confirmed Ref Cross numbers.

Engine Check: Confirm Cummins NT855, NTC855 or the exact engine model from the engine plate.

Turbo Tag Check: Check whether the old turbocharger shows 3026924, 3018067, 3801967, 3803279 or 3529040.

Application Check: Confirm whether the turbocharger is used on equipment, generator set, industrial engine or another Cummins-powered application.

Sample Check: Compare compressor housing, turbine housing, flange type, oil inlet and oil return positions.

Final Matching Rule: Use old turbo nameplate, engine model and removed sample photos before quotation.

Inspection Before Installation

Before replacing the 3026924 turbocharger, inspect the air filter, intake pipe, exhaust manifold, oil feed line and oil return line. A new turbocharger can fail early if the original failure was caused by dirty oil, blocked oil return, air restriction, exhaust leakage or foreign object damage.

During installation, add clean engine oil into the turbocharger oil inlet and rotate the compressor wheel by hand before the first engine start. After installation, check for oil leakage, abnormal turbo noise, weak boost, black smoke, blue smoke and unstable engine response during testing.

Common Failure Checks

Power Loss and Black Smoke: Check the air filter, intake pipe and compressor wheel for restriction or foreign object damage before installing the replacement turbocharger.

Metal Scraping or Loud Turbo Noise: Check for shaft play, bearing wear, oil contamination and signs of the wheel contacting the housing.

Oil Leakage from Intake or Exhaust Side: Check the oil return line and crankcase pressure. A blocked oil return line can force oil through the turbocharger seal area.

Official Troubleshooting: Diagnosing Turbo Failure

According to the Topvelsun diagnostic team, applying a new turbo to a sick engine will only cause repeat failure. Verify these symptoms before replacing your 3026924 turbo:

FAQ

Can 3018067 be used as Ref Cross?

Yes. 3018067 can be used as a Ref Cross and matching reference for this HT3B / T46 turbocharger direction. Final matching should still be confirmed by the old turbocharger tag and sample photos.

Can this turbocharger be used for generator set applications?

It can be checked for Cummins NT855 / NTC855 generator set and industrial engine applications when the old turbocharger number matches 3026924 or its confirmed reference numbers. The old nameplate should be checked before shipment.

What should I provide before ordering?

Please provide the old turbocharger part number, turbo nameplate photo, engine model, application information and clear photos of the removed turbocharger.