Cummins 6CTA Engine Parts for Australia - Oil Section

Cummins 6CTA Oil Pump and Lubrication System Components

Keep your Cummins 6CTA 8.3 engine operating at peak efficiency with a properly functioning lubrication system. At Diesel Pro Power, we provide OEM-quality Cummins oil pumps and related components—designed for CPL-specific compatibility, high performance, and extended engine life. Whether you operate a 6C, 6CT, or 6CTA, maintaining your oiling system is crucial for avoiding catastrophic engine failures, maintaining optimal pressure, and ensuring consistent lubrication across all moving parts.

Oil Pump for Cummins 6C, 6CT, and 6CTA Engines (Flanged Shaft Type)

Cummins Oil Pump – Flanged Shaft Design

This version of the Cummins 6CTA oil pump features a small drive gear with a flanged shaft. It is commonly used in early CPL (Control Parts List) configurations and marine/industrial setups.

Compatible CPL Numbers:
2, 602, 604, 831, 985, 1262, 1566, 1615, 1845, 1943, 1999, 2007, 2054, 2055, 2058, 2060, 2061, 2062, 2082, 2101, 2102, 2103, 2106, 2114, 2169, 2185, 2194, 2216, 2218, 2368, 2448, 2664, 2833, 2873, 2874, 2894, 8000, 8089

This oil pump is engineered to maintain consistent flow rates under varying RPMs, keeping internal tolerances tight even during prolonged industrial or marine use. Ideal for continuous-duty diesel engines, this unit is built for long-term reliability.

Application Tip: Always verify your CPL number before ordering. If unsure, contact our support team for personalized assistance.

Oil Pump for Cummins 6CTA (Washer-Retained Shaft Type)

Cummins Oil Pump – Holding Washer Design

This alternate pump uses a small drive gear and a shaft with a washer-style retention system. It is common in mid-to-late CPL configurations for 6CTA and 6CT marine and stationary engines.

Compatible CPL Numbers Include:
400, 401, 422, 424, 906, 915, 1096, 1286, 1404, 1632, 1738, 1754, 1793, 2722, 3093, 3144, 3169, 3175, 3212, 3301, 3517, 3518, 3519, 3600, 3663, 3664, 3665, 3735, 3823, 4524, 4525, 4526, 8017, 8159, 8220, 8221, 8389, 8419, 8430, 8458, 8478, 8537, 8538, 8548, 8627, 8630, 8636, 8639, 8641, 8647, 8648, 8650, 8692, 8693, 8695, 8697, 8698, 8703, 8728, 8730, 8746, 8780, 8792

Built with high-flow efficiency and robust internal gearing, this version is ideal for marine diesel applications where sustained oil pressure and reliability are essential.

Cummins Oil Pump Mounting Screws

Mounting Hardware – Screws for Oil Pump Installation

Each 6CTA oil pump installation requires four specially sized screws. These bolts are precision-engineered to secure the oil pump to the engine block without vibration or misalignment.

• Required Quantity: 4 per engine
  
  

• Corrosion-resistant coating
  
  

• OEM spec fitment for easy installation
  
  

Replace old or corroded hardware to prevent vibration-related failures or leaks in high-stress operating environments.

Oil Coolers for Cummins 6C, 6CT, 6CTA Engines

12-Plate Oil Cooler for Cummins 6C/6CT/6CTA/ISC

This oil cooler is designed for thermal regulation across 6C, 6CT, 6CTA, and ISC engine platforms. Featuring a 12-plate design, this unit effectively dissipates excess oil heat in heavy-duty and continuous-run applications.

Applications: Marine propulsion, generator sets, irrigation pumps, and more.

15-Plate Oil Cooler for Cummins 6CTA, QSC, ISC, ISL, QSL

For higher capacity cooling demands, the 15-plate model offers increased surface area and thermal exchange performance—ideal for industrial 8.3L Cummins applications requiring maximum durability under sustained load.

• Compatible with high-output CPL configurations
  
  

• Prevents oil breakdown and bearing wear in extreme environments
  
  

Cummins Oil Filters

Cummins Spin-On Oil Filter – 4.65" Diameter, 11.69" Height

Engineered for durability and flow performance, this spin-on oil filter is compatible with Cummins 6CTA configurations that use external filtration. It includes a heavy-duty gasket to prevent leaks under high oil pressure.

Thread Size: 2 1/4" - 12 UN
Use With: Compatible oil filter bases on 6CTA marine and industrial configurations

Oil Filter Removal Tool

Oil Filter Wrench – 4-21/32” to 5-5/32”

This universal wrench works across Detroit Diesel, Caterpillar, and Cummins spin-on filters. Its adjustable grip range ensures efficient removal without damaging filter housings.

• Ideal for tight engine bays or marine engine compartments
  
  

• Reduces maintenance time and risk of injury
  
  

Cummins Oil Cooler Gaskets and Covers

Oil Cooler Gasket
Essential for sealing between the oil cooler core and engine block. Always replace during oil cooler service to ensure proper sealing.

Oil Cooler Cover Gaskets (Two Options)
These gaskets seal the access cover to the oil cooler housing. One serves as the outer gasket; the other as the inner seal for double-layered protection.

Rear Cover Gasket – Cummins 6C/6CT/6CTA/ISC/QSC/ISL/QSL

This gasket seals the engine rear housing, often disturbed during oil pump or rear main seal work. Made from high-temp rubber composite to resist oil degradation and heat cycling.

Marine Zinc for Cummins Oil Coolers

Sacrificial Zinc Plug – 3/8" NPT, 1" Zinc

Protect your Cummins 6CTA marine engine oil cooler from galvanic corrosion with this brass plug and zinc insert. Designed for compatibility with 6CTA oil cooler housings featuring zinc ports.

• Easy replacement access
  
  

• Extends the life of oil cooler plates in saltwater environments
  
  

Fuel and Oil Pressure Switches for Cummins & Detroit Diesel

Available Ratings:

• 5 PSI Make/Break
  
  

• 10 PSI Make/Break
  
  

• 20 PSI Make/Break
  
  

• 27 PSI Make/Break
  
  

These pressure switches monitor vital oil system pressure and send signals to alarms or shutdown modules. Each unit features a 1/8” NPT thread and is rated for marine or stationary diesel operation.

Gauges for Oil Pressure Monitoring

Mechanical and Electrical Gauge Options:

• Mechanical gauges with or without alarms
  
  

• 12V and 24V electrical gauges
  
  

• Ideal for monitoring oil pressure in real time for Cummins 6CTA engines
  
  

Accurate oil pressure readings are essential to prevent engine wear and identify potential pump or bearing failures early.

Choosing the Right Oil Pump for Your 6CTA Engine

The Cummins 6CTA has undergone multiple CPL configurations, each with specific drive gears, retention methods, and oiling strategies. Choosing the correct oil pump and hardware means matching your part selection to the exact CPL number of your engine.

How to Find Your CPL Number:

• Look for the engine dataplate (often near the injection pump or valve cover)
  
  

• Contact Diesel Pro Power for CPL lookup if needed
  
  

• Match the CPL with the oil pump design: flanged shaft or washer-retained shaft
  
  

Best Practices for Maintaining the Cummins 6CTA Lubrication System

• Always change your oil filter when replacing or servicing the oil pump
  
  

• Inspect the rear cover gasket if you observe oil seepage near the flywheel housing
  
  

• Replace zincs regularly on marine applications to prevent internal cooler corrosion
  
  

• Check oil pressure switches and gauges for proper calibration
  
  

• Flush the oil cooler during engine rebuilds or oil pump replacements to prevent contamination
  
  

Why Diesel Pro Power?

With over 40,000+ satisfied customers worldwide, Diesel Pro Power is your trusted source for Cummins 6CTA lubrication system parts. All components are tested for marine and industrial performance and backed by expert customer support. We ship fast, carry hard-to-find parts, and ensure compatibility with your CPL.