Cummins 6LT · Truck configuration · 8.9L diesel
Match the engine.
Plan the installation.
The Cummins 6LT Truck Engine is an 8.9L six-cylinder turbo-diesel engine offered in a truck configuration. If you are looking for a truck diesel engine replacement, Crate Engines Australia can help confirm the specification required for your vehicle and intended use.
This is not a universal replacement for every truck using a Cummins engine. Confirm the engine model, transmission connection, mounting arrangement, electrical specification and emissions requirements. Send the truck make, model, year, VIN and engine identification plate photograph.
01 / Specification & fitment
Cummins 6LT Truck engine requirements.
Cummins 6LT Truck Engine options
The product selector includes 290 HP, 315 HP, 325 HP, 340 HP, 360 HP and 375 HP. Availability and the exact rating for the truck configuration require supplier confirmation. Confirm the engine model, rated RPM and operating specification before selecting horsepower.
A higher horsepower option does not automatically suit your truck. Confirm the required torque and operating requirements with your installer.
Truck diesel engine compatibility
Before purchasing a Cummins 6LT Truck Engine, compare the proposed engine with your original installation. Important checks include the flywheel housing, flywheel, transmission, clutch arrangement, engine mounts and available clearance.
Sump position, intake routing, exhaust layout and cooling connections can also differ between applications. Your installer should establish whether any original components need to be transferred or whether installation changes are required.
Send our team the truck make, model, year and VIN, together with a clear photograph of the existing engine identification plate. Include transmission details where available.
Supplied equipment and inclusions
The equipment supplied with your truck diesel engine must be confirmed on the quotation and invoice. Do not assume that a radiator, wiring loom, instrument panel, transmission or every external accessory is included.
Confirm the fuel system, turbocharger, starter motor, alternator and other accessories supplied with the selected build.
Photographs are useful for comparison, but the written specification should define the final package. Confirm engine condition and the complete supply list in writing before ordering.
Installation and compliance
This listing does not establish Australian on-road emissions approval or suitability for a particular vehicle. Before ordering, have a qualified installer or relevant approval specialist confirm the requirements for the proposed replacement or repower.
The engine specification must suit the vehicle’s operating requirements as well as its installation and compliance needs.
02 / Engine photographs
Compare the supplied configuration.
Use these photographs alongside your original engine details. The quotation and invoice define the final package.
03 / Delivery & peace of mind
From our warehouse.
To your next chapter.
Free standard Australian freight. Tracked delivery. A local team behind your engine purchase.
Delivered Australia-wide.
delivery
For an available engine, allow 1–2 business days for preparation. Confirm the current supply lead time before booking installation. Delivery estimates vary by location and carrier conditions; remote areas may take longer.
Local support. Written cover.
limited warranty
Cover starts when your engine is delivered.
Built around manufacturing quality
Cover for defects in materials and workmanship, including manufacturing faults in the block, head and internal components, subject to the policy.
Coverage & installation essentials
Professional installation and correct run-in are required. The policy excludes normal wear, improper installation, neglect, overheating, lack of lubrication and consequential costs. Read the full terms before installation.
Easy returns
7 days to arrange your return.
Contact us within 7 calendar days of confirmed delivery for an eligible non-warranty return. The engine must be unused, uninstalled and unaltered, with its original packaging intact.
The restocking fee applies to the engine purchase price. You pay return freight, and original shipping costs are deducted from the refund. Returns are inspected before refund approval. Warranty claims follow the separate warranty process.
How delivery works
- Order confirmedYour confirmation arrives by email.
- Prepared in QLDYour engine is packed for freight.
- Track to your doorTracking is emailed at dispatch.
If you need warranty support
- Contact our teamTell us about the issue promptly.
- Guided assessmentWe may request photos or diagnostic reports.
- Next steps agreedIf approved, we arrange inspection and repair or replacement instructions.
04 / Before you order
Cummins 6LT Truck engine FAQs.
What horsepower options are available for the Cummins 6LT Truck Engine?
The product selector includes 290 HP, 315 HP, 325 HP, 340 HP, 360 HP and 375 HP. Each horsepower selection is subject to supplier confirmation for the truck configuration.
Should I just choose the highest horsepower?
No. A higher horsepower rating does not automatically make an engine suitable for your vehicle. Confirm the exact engine model, rated RPM and torque specification before choosing an option.
Will this engine fit any truck that uses a Cummins engine?
No. This listing is not a universal-fit replacement for every truck using a Cummins engine. Engine model, transmission connection, mounting arrangement, electrical specification and emissions requirements must be checked before ordering.
What should be compared against my original installation?
Important checks include the flywheel housing, flywheel, transmission, clutch arrangement, engine mounts and available clearance. Sump position, intake routing, exhaust layout and cooling connections can also differ between applications.
What details do you need from me?
Send our team the truck make, model, year and VIN, together with a clear photograph of the existing engine identification plate. Include transmission details where available.
Is a radiator, wiring loom or transmission included?
Do not assume that a radiator, wiring loom, instrument panel, transmission or every external accessory is included. The equipment supplied with your truck diesel engine must be confirmed on the quotation and invoice.
Is this engine approved for Australian on-road use?
This listing does not establish Australian on-road emissions approval or suitability for a particular vehicle. Before ordering, have a qualified installer or relevant approval specialist confirm the requirements for the proposed replacement or repower.
What should I confirm before purchasing?
Confirm horsepower, fitment, engine condition, inclusions and delivery requirements before purchasing your truck diesel engine.
Confirm your replacement
Start with the complete specification.
Send your engine and installation details so we can confirm fitment, supply configuration and lead time.
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