Flywheel Assembly for Hino W06E Engine — Japanese Truck Replacement

This flywheel assembly is a direct-fit replacement for the Hino W06E 6-cylinder diesel engine, one of the most respected Japanese medium-duty truck powerplants used in Hino Ranger, Hino 300/500 Series, and industrial equipment applications worldwide. The flywheel serves triple duty in the drivetrain: as a rotational energy storage device that smooths the power impulses from each cylinder firing, as the friction interface where the clutch disc engages to transfer engine torque to the transmission, and as the mounting carrier for the starter ring gear that cranks the engine during starting. A worn or heat-checked flywheel friction surface causes clutch slippage, vibration during engagement, and premature clutch disc wear — while a damaged ring gear produces that unmistakable grinding sound during starting that signals impending starter motor failure.

This flywheel is manufactured from high-density cast iron with a precision-ground friction surface meeting the flatness and runout specifications of the original Hino W06E component. The clutch friction face is machined to a surface roughness profile optimized for both organic and ceramic clutch disc materials, ensuring consistent torque capacity and smooth engagement across the full service life of the clutch. The starter ring gear is manufactured from medium-carbon steel, induction-hardened on the tooth flanks for wear resistance, and shrink-fitted onto the flywheel body with a interference fit that prevents rotation or separation under starter motor torque loads. Each assembly is factory-balanced to within 15 g·cm to minimize engine vibration and protect main bearings from harmonic stress.

Compatible with Hino Ranger (FC/FD/FE/FF), Hino 300 Series (Dutro), Hino 500 Series, and industrial/marine applications powered by the W06E engine. Also fits some Toyota forklift models and Komatsu construction equipment using the same engine platform. Always install with new flywheel bolts torqued to specification, replace the pilot bearing and clutch assembly simultaneously, and verify ring gear tooth condition before installation. Browse our engine parts collection for complementary drivetrain components. Reference OEM specifications at Hino Motors official website.

Technical Specifications

• SKU: HINO-W06E-FW
• Type: Complete Flywheel Assembly (with Ring Gear)
• Material: High-Density Cast Iron / Induction-Hardened Steel Ring Gear
• Fitment: Hino W06E 6-Cylinder Diesel Engine
• Balance: Factory Balanced to 15 g·cm
• Application: Hino Ranger, 300/500 Series, Toyota Forklifts, Industrial Equipment

Compatible Vehicle & Equipment Models

Kingstream flywheel assemblies are packaged in heavy-duty corrugated cartons with reinforced edges and VCI anti-corrosion wrapping. Each unit undergoes friction surface flatness measurement, ring gear tooth profile inspection, and dynamic balance verification. 12-month replacement warranty. Contact us for freight quotes, bulk pricing, or OEM part number cross-reference.