Forklift Radiator A91A2 — Hydraulic Radiator for K30 Manual Transmission Forklift Trucks

This forklift radiator type A91A2 is a Kingstream OEM hydraulic radiator for K30 manual transmission forklift trucks in building material, manufacturing, construction, port, warehousing, freight yard, mining, logistics, and agricultural environments. The A91A2 radiator serves as both the engine coolant heat exchanger and the hydraulic oil cooler for the K30 forklift’s hydraulic system — a dual-function design that combines engine cooling and hydraulic oil temperature regulation in a single radiator unit. 8kg with 70×50×20cm packaging. 100% professional tested with carton box and 7-15 day delivery. Kingstream OEM available.

Installing the A91A2 radiator on a K30 manual transmission forklift requires draining the engine coolant and hydraulic oil cooler circuit, disconnecting the upper and lower radiator hoses and the hydraulic oil cooler lines, removing the radiator from its chassis mounts, and installing the replacement with proper fan shroud alignment. The dual-function design means both the engine cooling and hydraulic oil cooling circuits must be properly connected and bled after installation. Refill coolant and hydraulic fluid, run the engine to bleed air from the cooling system, cycle the hydraulic functions to bleed air from the cooler circuit, and verify no leaks at any connection. For K30 forklifts in heavy-duty environments, the radiator’s external fins and internal passages must be kept clean to maintain both engine and hydraulic oil cooling efficiency. Browse our Forklift Radiator category. Contact us.

Technical Specifications

100% professional tested. Kingstream OEM. For bulk orders, contact us.

The A91A2 dual-function radiator is uniquely engineered for the K30 manual transmission forklift platform — combining the engine coolant radiator with an integrated hydraulic oil cooler section. This design eliminates the need for a separate hydraulic oil cooler, reducing component count, weight, and potential leak points in the forklift’s fluid systems. The hydraulic oil cooler section uses a separate circuit within the radiator that allows hot hydraulic oil from the steering and lift systems to transfer heat to the engine coolant, which then dissipates it through the radiator fins. This integrated approach is particularly effective on manual transmission K30 forklifts where the engine thermal load is lower than automatic transmission variants, freeing cooling capacity for the hydraulic system. A failed hydraulic oil cooler section — either internally leaking hydraulic oil into the coolant or externally leaking at the cooler line fittings — must be addressed immediately because hydraulic oil contamination of the engine coolant degrades the radiator’s heat transfer efficiency and can cause coolant hose swelling and failure. For K30 forklift fleet cooling and hydraulic system maintenance programs, contact us for competitive pricing.