Compatible replacement part for HINO W04E, W04D, W04DD and FB / FB2W engines (4000cc). Designed for use in HINO Victer 500 Series buses to maintain the vehicle cooling system. Key benefits Reliable fitment: Matches the dimensional specifications of the original equipment to ensure proper alignment and mounting with HINO W04E, W04D, W04DD and FB/FB2W engine models (4000cc). OEM interchangeability: Direct replacement for part numbers 1610078011, 161002341, 161002342 and 161002343, simplifying parts ordering and reducing compatibility risk. Durable construction: Built with materials selected to withstand continuous operation in heavyduty bus applications, helping reduce premature failures and extend service intervals. Restores cooling performance: Replaces worn or damaged components to reestablish proper coolant flow and temperature control, preventing overheating and related engine damage. Fleet uptime and cost control: Reduces downtime for HINO Victer 500 Series buses by providing a proven, dimensionally accurate replacement that integrates with existing cooling systems. Important attributes Function: Replacement coolingsystem component intended to maintain proper engine cooling in compatible HINO models and Victer 500 Series buses. Compatibility: HINO W04E, W04D, W04DD, FB, FB2W engine models; optimized for 4000cc engines; specified for HINO Victer 500 Series buses. Size and fit: Manufactured to precise dimensions matching OEM specifications for direct interchangeability with listed part numbers. Material and durability: Constructed to endure continuous heavyduty use typical of bus operation and commercial fleet service. Performance: Designed to restore original coolingsystem operation and reliability when replacing worn or failed parts. Typical use scenarios Scheduled fleet maintenance: the coolingsystem component during routine service intervals on HINO Victer 500 Series buses to maintain reliable engine temperature control. Field after overheating or leak diagnosis: Fit this OEMinterchangeable part when a coolingsystem failure is identified to quickly a bus to service with correct dimensions and performance. Engine overhaul or component refurbishment: Use as the OEMequivalent replacement when rebuilding W04series or FBseries (4000cc) engines to ensure proper coolingsystem integrity. Compatibility and part references HINO engine models: W04E, W04D, W04DD, FB, FB2W (4000cc) Intended vehicle: HINO Victer 500 Series buses OEM part numbers replaced: 1610078011, 161002341, 161002342, 161002343 Notes Fitment and performance depend on correct matching to the listed engine models and OEM part numbers. Verify compatibility with your vehicle and service manual before installation.