Brand new replacement · 2.1L · Forklift engine
Nissan K21 engine for sale.
Keep your forklift working.
Replace a worn forklift motor with a brand-new Nissan K21 engine assembly. The 2,065cc four-cylinder K21 is commonly described as 2.1L and is used in petrol and LPG applications. Send your engine identification and forklift details so we can confirm the assembly and help your mechanic plan the changeover.
01 / Identify your forklift
Identify your K21 before booking the changeover.
Send the forklift make, model, build year and serial number, plus a clear photograph of the engine identification. Tell us whether it runs on petrol, LPG or a dual-fuel setup. Our team can use those details to check the replacement configuration with your installer.
| Check before ordering | Information to confirm |
|---|---|
| Engine identification | K21 marking, engine number and any assembly or identification plate details. |
| Forklift identification | Make, full model, serial number and build year; no universal brand-wide fitment is claimed. |
| Fuel & controls | Petrol, LPG or dual fuel; existing fuel equipment, ignition, sensors, wiring and control arrangement. |
| Installation layout | Sump, mounts, brackets, cooling connections, manifolds and service access. |
| Driveline connection | Flywheel or driveplate, housing and transmission connection as applicable. |
| Supplied equipment | Written supply list and the external components your mechanic will need to transfer. |
Selected Nissan, TCM, Mitsubishi and UniCarriers forklifts use the K21 platform. A Clark or other forklift badge is not enough to confirm compatibility. Check the engine plate and full machine details; even machines in the same brand can use different engines.
02 / Know what is supplied
New engine assembly. Planned accessory transfer.
Your replacement engine
A new K21 foundation
This listing supplies a brand-new replacement engine assembly, with the exact included components confirmed on your written order.
- New engine supply rather than a used motor with unknown operating hours.
- Product photographs to help compare the assembly.
- No exchange engine or core return required.
- One-year product warranty under the published terms.
Your original configuration
Check what needs transferring
Forklift-specific external parts may need to be reused. Have your mechanic check their condition and compatibility before fitting.
- Intake and exhaust manifolds.
- Petrol or LPG fuel-system equipment.
- Ignition parts, sensors, wiring and controls.
- Cooling accessories, mounts, brackets and driveline parts as required.
Do not assume a new LPG regulator, mixer, ECU, wiring harness, starter, alternator or transmission is included. Ask for the written supply specification and keep your old engine until the transfer list is confirmed.
03 / Inspect the layout
A closer look at the K21 assembly.
K21 / replacement assembly / product reference
012.1L four-cylinder platform
The K21 is a 2,065cc inline-four engine with an overhead-valve layout. Its 2.1L designation distinguishes it from the larger 2.5L K25; match the engine identification before ordering.
02Match the fuel and control system
K21 forklifts can use different carburettor or electronic fuel-control arrangements. Your existing fuel type, ignition and controls must be checked against the replacement assembly.
03Check the bolt-on parts
Photograph both sides of the old engine, its mounts, sump and rear connection. These details help your mechanic plan the transfer work.
Choose the right replacement route
New K21, used motor or rebuild?
| Option | What to compare |
|---|---|
| This new K21 engine | New assembly, confirmed transfer requirements, no core return and one-year product warranty. |
| Used forklift motor | Operating hours, maintenance history, inspection findings, included accessories and written warranty. |
| Reconditioned engine | Machining and parts replaced, testing performed, accessory condition, completion time and core requirements. |
Compare the full installed cost as well as the engine price. Include labour, fluids, filters, external-component repairs and the time your forklift will be out of service.
04 / Plan the workshop job
Resolve the original fault before fitting.
Establish why it failed
Hard starting, smoke or power loss can have several causes. Have a forklift technician confirm whether the problem is internal engine wear or an external fuel, ignition or cooling fault.
Inspect transferred parts
Check and clean serviceable parts before transfer. Resolve cooling, fuel-delivery and ignition faults so they are not carried onto the replacement engine.
Follow the correct setup
Use a qualified forklift technician to follow the engine-specific installation, fluid, adjustment and run-in instructions. Have the machine checked before returning it to work and retain the service records.
Forklift workshop or fleet buyer?
Call for trade pricing before ordering. Discuss Humm payment options and confirm supply timing with our Australian team so you can plan the workshop booking.
See the business behind your engine
Step inside our warehouse.
Take a look around and see our engine stock and delivery crates for yourself. When you buy a brand new Nissan K21 engine, there is an Australian team here to help with your engine specification, supply details and replacement planning.
Free standard Australian delivery and a 1-year limited warranty are included under our published terms.
05 / Delivery & peace of mind
From our warehouse.
To your next chapter.
Free standard Australian freight. Tracked delivery. A local team behind your Nissan K21.
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.
06 / Before you buy
Nissan K21 engine FAQs
Is this a new or reconditioned Nissan K21 engine?
This listing is for a brand-new K21 replacement engine assembly. It is not a used take-out or a rebuild of your old engine. Confirm the included equipment on your written order.
Does this K21 suit an LPG forklift?
The K21 platform is used in LPG and petrol forklift applications. Suitability depends on the exact forklift configuration and the external fuel and control equipment. Send the model, serial number, fuel type and engine photographs before ordering.
Is a new LPG fuel system included?
Do not assume an LPG regulator, mixer or other external fuel equipment is included. The supplied assembly and parts to transfer must be agreed in writing.
Will this K21 fit my Nissan, TCM, Mitsubishi or Clark forklift?
Send the forklift model, serial number and a clear engine identification photograph. We need to confirm the K21 designation, fuel system and accessory layout. Brand names alone do not establish fitment, including for Clark, Nissan, TCM, Mitsubishi and UniCarriers machines.
Are K21 and K25 engines interchangeable?
The K21 is 2,065cc; the K25 is 2,488cc. They are different engine designations, so do not assume a direct swap. Ask your installer to confirm the correct specification; see our separate Nissan K25 engine listing if your plate identifies a K25.
Is the Nissan K21 a 2.0L or 2.1L engine?
The K21 displacement is 2,065cc, commonly rounded to 2.1 litres. Some listings describe it as 2.0L. Use the K21 identification and machine configuration to select your replacement, rather than capacity wording alone.
Do you need my old engine back?
No core exchange is required. Keep your original engine until your mechanic has identified and transferred any compatible external components needed for the installation.
Does the warranty cover installation labour?
The included one-year warranty is product cover, not a labour warranty. Read the warranty terms for coverage, installation requirements and exclusions.
Explore the right engine
Ready for the next step?
Let’s match your K21 replacement.
Send the engine identification, forklift model, serial number and fuel type. We’ll help you confirm the supply details and next steps.
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