# 3536621H Cummins Marine Aftermarket Turbocharger 6BTA 330/370 Diamond 3802829/3536621H HOLSET | Sawley's Select Marine Parts

🔧 Product Description

  

Sawley's Select Marine Parts Aftermarket Cummins 6BTA 5.9L HX40 Marine Turbocharger - Replacement for Part Numbers: 3536621H and 3802829

  

A new aftermarket fixed-geometry marine turbocharger for selected Cummins 6BTA and 6BTAM 5.9-litre engines, including applicable 330HP and 370HP Diamond Series installations.

  

The HX40 marine turbocharger uses exhaust-gas energy to compress intake air before it enters the engine's aftercooler and intake manifold. Correct boost delivery is essential for normal torque, rated engine speed, combustion efficiency and exhaust-temperature control.

  

This turbocharger is also catalogued for selected 6BTAM calibrations rated at approximately 355HP. Final fitment must be established from the Cummins engine serial number and the identification plate on the original turbocharger.

  

⚙️ Key Features

  

• New aftermarket Cummins marine turbocharger

• Replaces Holset turbocharger 3536621H

• Replaces Cummins service turbocharger 3802829

• Holset HX40 / HX40M marine configuration

• Fixed-geometry turbocharger design

• Suitable for selected 330HP, 355HP and 370HP engine calibrations

• Designed for turbocharged and aftercooled 5.9L marine engines

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• Holset 3536620 - Earlier complete turbocharger reference

• Holset 3536621H - Later new complete turbocharger reference

• Holset 3536621R - Remanufactured turbocharger reference

• Cummins 3802829 - Complete OEM service turbocharger

• Cummins 3802829RX - Cummins ReCon exchange reference

• Cummins 3802829NX - Cummins new exchange reference

  

OEM / Related Numbers:

  

• 3536621H

• 3536621

• 3536621R

• 3536620

• 3802829

• 380282900

• 3802829RX

• 3802829NX

• Turbo Model: HX40

• Turbo Model: HX40M

• Related HX40W catalogue reference

• Centre Housing Rotating Assembly: 4027283 / 4027283H

• Repair Kit: 3575169

• Related Gasket Kit: DGK0121

• Related Installation Gasket Kit: 3536621GSK

  

Aftermarket / Verified Equivalents:

  

• Aftermarket HX40 replacement for Holset 3536621H

• Aftermarket HX40M replacement for Holset 3536620

• Aftermarket replacement for Cummins 3802829

• Aftermarket Cummins 6BTA 330HP marine turbocharger

• Aftermarket Cummins 6BTA 370 Diamond marine turbocharger

• Replacement CHRA 4027283H available separately

  

🚤 Compatibility

  

Commonly used on:

  

• Cummins 6BTA marine diesel engines

• Cummins 6BTAM marine diesel engines

• B-Series Diamond Series recreational marine engines

• Turbocharged and aftercooled shaft-drive installations

  

Typically suits:

  

• Engine models and families:

• Cummins 6BTA 5.9 330HP marine applications using 3802829

• Cummins 6BTA 5.9 370HP Diamond Series applications using 3802829

• Cummins 6BTAM approximately 355HP applications using 3536621H

• Cummins B-Series 5.9L marine engines using Holset 3536620

• Cummins B-Series marine engines whose original turbo data plate shows 3536621H

  

• Rated Power Range: Approximately 330HP - 370HP, dependent on engine calibration

• Engine Displacement: Approximately 5.9 litres

• Engine Configuration: Inline six-cylinder, four-stroke diesel

• Induction System: Turbocharged and aftercooled

• Turbocharger Type: Holset HX40 / HX40M fixed geometry

• Fuel Type: Diesel

• Representative Production Period: Approximately 1995-2006, dependent on engine serial number

  

Important fitment note:

  

• The terms 330, 355 and 370 refer to different Cummins engine calibrations that may share this turbocharger family.

• Not every 6BTA or QSB 5.9 engine uses turbocharger 3802829.

• Confirm the Cummins engine serial number, CPL and original Holset data plate before ordering.

• Check compressor outlet, oil-line and turbine-housing orientation against the original unit.

  

🔌 Function

  

The turbocharger supplies compressed air through the aftercooler and into the intake manifold.

  

The additional air allows the high-output 5.9-litre engine to burn the commanded fuel cleanly and reach its rated torque and horsepower.

  

Common signs of turbocharger failure:

  

• Engine will not achieve rated rpm under load

• Reduced acceleration or vessel speed

• Low or unstable boost pressure

• Excessive black smoke

• Blue smoke or increased oil consumption

• Oil inside the compressor outlet or aftercooler

• High exhaust-gas temperature

• Whistling, siren or grinding noise

• Excessive turbocharger shaft movement

• Compressor or turbine wheel damage

• Carbon restriction in the turbine housing

• Cooling-water corrosion around the marine turbine housing

  

Installation considerations:

  

• Confirm Cummins 3802829 or Holset 3536621H on the original unit

• Verify the Cummins engine serial number and CPL

• Correct the cause of the original turbocharger failure

• Replace the engine oil and oil filter

• Inspect or renew the oil-feed pipe

• Confirm unrestricted flow through the turbo oil-return pipe

• Clean the aftercooler and intake hoses

• Remove oil, carbon and metal contamination from the air system

• Check crankcase pressure and breather operation

• Inspect the exhaust manifold and mixing elbow

• Flush and inspect the turbocharger coolant passages

• Prime the centre housing with clean engine oil

• Fit new oil-line, manifold and exhaust gaskets

• Establish engine oil pressure before operating at speed

• Check for oil, coolant, air and exhaust leakage

• Verify boost pressure and rated loaded rpm during sea trials

  

📦 Condition

  

• Sawley's Select Marine Parts aftermarket replacement

• Brand new

• Supplied in protective packaging

• Installation gasket kit not included unless specifically listed

## Details

- **Price:** 3850.0 AUD
- **Vendor:** Holset
- **Tags:** Sawley’s AAM Aftermarket – Turbochargers | Marine Turbochargers & Engine Boost Systems

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 3850.00 AUD | In stock |

## Images

- 3536621H Cummins Marine Aftermarket Turbocharger 6BTA 330/370 Diamond 3802829/3536621H HOLSET | Sawley's Select Marine Parts
- 3536621H Cummins Marine Aftermarket Turbocharger 6BTA 330/370 Diamond 3802829/3536621H HOLSET | Sawley's Select Marine Parts
- 3536621H Cummins Marine Aftermarket Turbocharger 6BTA 330/370 Diamond 3802829/3536621H HOLSET | Sawley's Select Marine Parts
- 3536621H Cummins Marine Aftermarket Turbocharger 6BTA 330/370 Diamond 3802829/3536621H HOLSET | Sawley's Select Marine Parts
- 3536621H Cummins Marine Aftermarket Turbocharger 6BTA 330/370 Diamond 3802829/3536621H HOLSET | Sawley's Select Marine Parts
- 3536621H Cummins Marine Aftermarket Turbocharger 6BTA 330/370 Diamond 3802829/3536621H HOLSET | Sawley's Select Marine Parts
- 3536621H Cummins Marine Aftermarket Turbocharger 6BTA 330/370 Diamond 3802829/3536621H HOLSET | Sawley's Select Marine Parts
- 3536621H Cummins Marine Aftermarket Turbocharger 6BTA 330/370 Diamond 3802829/3536621H HOLSET | Sawley's Select Marine Parts
- 3536621H Cummins Marine Aftermarket Turbocharger 6BTA 330/370 Diamond 3802829/3536621H HOLSET | Sawley's Select Marine Parts
- 3536621H Cummins Marine Aftermarket Turbocharger 6BTA 330/370 Diamond 3802829/3536621H HOLSET | Sawley's Select Marine Parts

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/lp-3536621h-cummins-marine-6bta-turbo-330-370-diamond-3802829-3536621h-holset)
> Updated: 2026-07-11