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    • Komatsu Forklift Replacement Parts

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    Aftermarket and replacement Komatsu parts built to original equipment specifications. Search by part number, model, or description to find the right part for your forklift.

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    Komatsu Forklift Parts

    We stock aftermarket Komatsu forklift components — including engine parts, filters, starters, and hydraulic cylinders — plus parts for the Nissan K21 and K25 engines used in many Komatsu forklifts, manufactured to OEM-spec dimensions so downtime stays short and you skip the OEM markup.

    Why buyers choose us:
    • OEM-Spec Fitment: Built to meet or exceed original equipment dimensions.
    • Fast Nationwide Shipping.
    • Part Verification: Not sure which part fits? Contact us and we'll verify it for you before you order.
    Manufacturer guides

    Nissan Forklift Engines: H20, H20-II, H25, K21 and K25 Explained

    Nissan's H20, H20-II, H25, K21 and K25 power industrial equipment under many different OEM badges. The H-series is an iron pushrod design with a timing chain; the K-series is an aluminum-head overhead cam with a timing belt. The two families share essentially no parts, and matching displacement — H25 versus K25 — is not a cross-reference. A magnet on the cylinder head tells you which family you have.

    The Seven OSHA Forklift Classes

    Every powered industrial truck falls into one of seven OSHA classes, sorted by power source, tire type and how the operator works the machine. Classes I–III are electric, IV and V are internal combustion on cushion and pneumatic tires, VI covers tractors and tow vehicles, and VII is rough terrain. The class tells you where a truck can run and which parts it consumes.

    Forklift Drum Brakes: How They Work, What Fails and How to Diagnose It

    Most internal combustion forklifts stop on drum brakes at the drive axle: one master cylinder feeding a wheel cylinder at each end, spreading two shoes against a drum. The shoes self-adjust, but on most designs only when the truck brakes in reverse. Three quarters of brake complaints come down to contaminated linings or adjustment, not worn parts.

    Forklift Cooling Systems: How They Work, What Fails and How to Diagnose It

    A forklift cooling system is a pressurised loop of water and antifreeze moved by a belt-driven water pump, regulated by a wax-pellet thermostat and cooled by a fan through the radiator. On powershift trucks the same radiator also cools transmission oil, so overheating is a whole-truck problem. The radiator cap holds pressure to raise the coolant's boiling point — a weak cap causes overheating on its own.

    Forklift Carburetors: How They Work, What Fails and How to Adjust Them

    A carburetor meters fuel into the engine's airflow using calibrated jets and mechanical linkage, with no sensors or feedback. Separate circuits handle idle, main running, full load, sudden acceleration and cold starting, all working from one constant fuel level in the float bowl. On a forklift the throttle pedal commands a governor, not the carburetor directly, and coolant is routed through the casting to stop the throttle plate icing.