2674A393 GT2052S Turbocharger for Perkins 1004-40T T4.40 Engine

2674A393 GT2052S Turbocharger for Perkins 1004-40T Engine

The 2674A393 turbocharger is used for Perkins 1004-40T and T4.40 engine boost system service. It is commonly searched together with GT2052S turbocharger references and JCB machine references such as 3CX, 4CX and 411B.

This page focuses on the 2674A393 turbocharger signal, while related numbers such as 2674A328, 727266-5003S, 727266-0003, 452301-5003S and 452301-0003 are included as cross reference support. Because turbocharger configuration may vary by engine build, manifold layout, actuator setting and oil line position, final fitment should be verified by the old turbocharger nameplate and physical structure before ordering.

Product Information and Technical References

Cross Reference and Number Format

The main part number for this page is 2674A393. Related Perkins, JCB and Garrett turbocharger references may include 2674A328, 2202240, 2201873, 02/202415 and 02202415.

Common turbocharger references connected with this unit include 727266-5003S, 727266-0003, 727266-5001S, 727266-0001, 452301-5003S and 452301-0003. These references are useful for identification, but they should not be treated as automatic interchange confirmation without checking the old turbocharger nameplate and physical layout.

Turbochargers with similar numbers may still have different compressor housing orientation, turbine inlet flange, actuator type, oil pipe position or exhaust connection. Cross reference numbers should be used as support for identification, not as the only fitment basis.

Perkins 1004-40T T4.40 Engine Application Notes

The 2674A393 turbocharger is commonly referenced for Perkins 1004-40T and T4.40 engine service. It is used when the engine has low boost pressure, power loss under load, abnormal turbo noise, oil leakage from the turbo area or excessive exhaust smoke.

Perkins 1004.40T build references such as AK and AQ may appear in catalog data. These build references should be checked against the original engine and turbocharger number before replacement because different builds may use different turbocharger specifications.

JCB 3CX 4CX 411B Model References

This turbocharger is often searched for JCB 3CX, 4CX and 411B repair. These model names are useful for buyer search and initial identification when the old turbo number is not available at the first inquiry stage.

JCB machines may use different turbocharger versions depending on production year, engine rating and repair history. Before quotation, confirm the turbo part number, engine build, machine serial number and clear photos of both sides of the turbocharger.

Technical Identification Points

• Confirm whether the old turbocharger label shows 2674A393 or a matching reference.

• Check whether the turbo model reference matches GT2052S.

• Compare compressor housing orientation and outlet direction with the old unit.

• Check turbine inlet flange, exhaust outlet and manifold connection.

• Verify actuator type, actuator rod position and boost control layout.

• Compare oil feed and oil return positions before installation.

• Check whether the replacement turbocharger matches the Perkins engine build code and machine serial number.

Common Failure Symptoms

• The engine loses power under load.

• Black smoke appears because of low boost pressure or poor air supply.

• Blue smoke appears when oil enters the intake or exhaust side.

• Whistling, scraping or abnormal noise comes from the turbocharger area.

• Oil leakage appears near the compressor housing, turbine housing or oil return pipe.

• The turbo shaft has excessive radial or axial play.

• Boost pressure remains lower than expected after the engine is under load.

Troubleshooting Before Replacement

Before replacing the 2674A393 turbocharger, inspect the complete intake, exhaust and lubrication system. A turbocharger failure can be caused by poor oil supply, dirty air filtration, intake leakage, exhaust restriction or excessive crankcase pressure.

• Check the air filter, intake hose and intercooler pipe for blockage or leakage.

• Inspect oil feed and oil return lines for carbon blockage, restriction or leakage.

• Check engine oil quality and confirm the correct oil change interval.

• Inspect the exhaust manifold and gasket area for leakage before the turbine side.

• Check whether foreign object damage is present on compressor or turbine blades.

• Confirm that crankcase pressure is not excessive before installing a replacement turbocharger.

Installation and Maintenance Notes

• Clean or replace oil feed and oil return lines before installing the replacement turbocharger.

• Pre-lubricate the turbocharger with clean engine oil before first start.

• Replace damaged gaskets and check that all flanges sit flat.

• Do not use sealant that may enter the oil passage or exhaust side.

• After installation, idle the engine briefly to confirm oil supply before applying load.

• Check for oil leakage, exhaust leakage, abnormal noise and boost pressure after installation.

• Allow the engine to idle briefly before shutdown after heavy load operation to protect the turbocharger bearing system.

FAQ

What is 2674A393?

2674A393 is a Perkins turbocharger reference commonly connected with GT2052S turbocharger listings and Perkins 1004-40T T4.40 engine applications.

Is 2674A393 used for JCB machines?

It is commonly listed with JCB 3CX, 4CX and 411B model references. Final fitment should still be confirmed by the old turbocharger number, engine build and machine configuration.

What turbo model is commonly connected with 2674A393?

GT2052S is the common turbo model reference connected with this part number in aftermarket listings.

What are the common cross reference numbers?

Common references include 2674A328, 727266-5003S, 727266-0003, 727266-5001S, 727266-0001, 452301-5003S and 452301-0003. These should be checked against the old turbocharger before ordering.

Is 2674A393 suitable for Perkins 1004.40T AK and AQ builds?

Some catalog references connect 2674A393 with Perkins 1004.40T AK and AQ builds. The removed turbocharger label and engine build code should be checked before confirming replacement.

What should be checked before ordering this turbocharger?

Check the old turbocharger label, turbo model, compressor housing direction, turbine flange, exhaust outlet, actuator type, oil feed, oil return and mounting layout before ordering.

Why does a replacement turbocharger fail early?

Early failure can be caused by poor oil supply, blocked oil return, dirty air filtration, foreign object damage, exhaust leakage, excessive crankcase pressure or incorrect installation.