4039630 Turbocharger for Cummins Engine 4BT 6BT QSB

4039630 HX35W Turbocharger for Cummins QSB 6BT Engine

The 4039630 HX35W turbocharger is supplied for Cummins QSB, 4BT3.9 and 6BT5.9 diesel engine applications. It is commonly checked for Cummins industrial engine repair, truck engine repair and construction machinery engine service where the old turbocharger uses the 4039630 / HX35W direction.

This replacement turbocharger is used to restore boost pressure, improve air intake volume and support stable engine output when the old turbocharger has weak boost, oil leakage, abnormal noise, damaged wheel blades or excessive shaft play. Before ordering, the old turbocharger tag and removed sample photos should be checked to confirm the correct housing, flange and oil line arrangement.

Main Part Number and Ref Cross

The main part number is 4039630. HX35W is the turbo model reference for this product direction. Ref Cross numbers such as 4033282, 4033282H, 4039330, 4039962, 4039963, 4043679, 4043802, 4046265 and 4955479 can be used for inquiry matching. Final confirmation should still be based on the old turbocharger nameplate, engine model and physical housing comparison before shipment.

Part Number: 4039630

Ref Cross: 4033282 / 4033282H / 4039330 / 4039962 / 4039963 / 4043679 / 4043802 / 4046265 / 4955479

Turbo Model: HX35W series turbocharger

Engine Model: Cummins QSB / 4BT3.9 / 6BT5.9 diesel engine

Main Application: Cummins QSB Tier 3 industrial engine application

Related Application: Cummins 4BT, 6BT and related diesel engine applications, verify by old turbo tag and sample photos

Application Matching Notes

For Cummins QSB, 4BT3.9 and 6BT5.9 engine applications, the safest confirmation method is to check the old turbocharger number together with the engine plate and removed sample. Engine family names alone are not enough for final matching because HX35W turbochargers can have different compressor housings, turbine housings, actuator settings, flange layouts and oil pipe positions.

Engine Check: Confirm Cummins QSB, 4BT3.9, 6BT5.9 or the actual engine model from the engine plate.

Turbo Tag Check: Check for 4039630, 4033282H, 4039330, 4039962, 4955479 or HX35W on the old turbocharger tag.

Housing Check: Compare compressor housing, turbine housing, outlet direction, flange type and mounting layout.

Oil Line Check: Confirm oil inlet, oil outlet, pipe position and return line direction.

Photo Check: Provide clear photos of the nameplate side, compressor side, turbine side and mounting side before quotation.

Common Replacement Conditions

A worn 4039630 HX35W turbocharger can cause low boost pressure, black smoke, weak acceleration, oil leakage, abnormal turbo noise, damaged compressor wheel or excessive shaft clearance. Before replacing the turbocharger, the air intake, exhaust and lubrication systems should be checked to reduce the risk of repeat turbo failure.

Low Boost or Black Smoke: Check the air filter, intake pipe, intercooler pipe, compressor wheel condition and boost leakage.

Weak Engine Power: Inspect the compressor wheel, turbine wheel, exhaust leak, boost hose and fuel injection condition.

Oil Leakage: Check the oil feed line, oil return line and crankcase ventilation. A blocked oil return line can cause oil leakage at the turbocharger seal area.

Abnormal Turbo Noise: Check shaft play, bearing wear, wheel contact marks and signs of contaminated oil or foreign object damage.

Inspection Before Installation

Before replacing the 4039630 turbocharger, inspect the air filter, air intake pipe, exhaust manifold, oil feed line and oil return line. Turbocharger damage is often caused by dirty oil, blocked oil return, air restriction, exhaust leakage or foreign object damage from the intake side.

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, black smoke, blue smoke, weak boost and unstable engine response during low-speed and working-speed testing.

FAQ

Is 4039630 the main part number for this product?

Yes. 4039630 is the main part number for this HX35W turbocharger direction. It should be checked together with the old turbocharger tag and engine model before ordering.

Can 4033282H be used as Ref Cross?

Yes. 4033282H can be used as a Ref Cross reference for this 4039630 HX35W turbocharger direction. Final matching should still be confirmed by the old turbocharger tag and sample photos.

Is this turbocharger for Cummins QSB engine?

Yes. This turbocharger is commonly checked for Cummins QSB and QSB Tier 3 engine applications. Please confirm the old turbocharger number and engine plate before ordering.

Can this turbocharger be checked for Cummins 4BT or 6BT?

Yes. It can be checked for Cummins 4BT3.9 and 6BT5.9 applications when the old turbocharger tag, engine model and sample photos match this 4039630 / HX35W direction.

What should I provide before ordering?

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