Part: 4634947 and 4634936 hydraulic fan motor, old type, new Chinese-made replacement for Hitachi ZX450-3, ZX470-3, ZX850-3 and ZX870-3 excavators.
Physical form: dark grey conical cast housing, four-bolt square flange, keyed shaft, two work ports on a side block with a silver cover plate. Housing castings include cross number 93467079E.
Terms: HTD brand, made in China, three to six month warranty, MOQ 1 piece, wooden case, dispatch 5 to 8 working days.
Part: YA00005829 hydraulic fan motor for Hitachi ZX450-3, ZX470-3, ZX850-3 and ZX870-3 excavators, new Chinese-made replacement, HTD brand.
Why buyers choose this grade: it carries a three to six month warranty, ships in 5 to 8 working days, and is stocked for fleet quantities rather than one-off surplus.
Check first: this is the square-flange unit with the silver cover and bottom work ports. It is not the same physical part as the Parker-built 4634936.
Part: 4633474 variable displacement fan pump, built on the Kawasaki K3V63S platform, for Hitachi ZX450-3, ZX450-3F, ZX450LC-3-DH and ZX470H-3 excavators.
Supplied as: new HTD-brand replacement, made in China. Bench pressure-tested, wooden case, MOQ 1 piece, dispatch 5 to 8 working days.
Match before ordering: the regulator code on your old pump, the splined shaft, the flange bolt pattern and the case drain port position.
Part: YA00005829 hydraulic fan motor for Hitachi ZX470-3, ZX490-5A and ZX870-3 excavators, supplied as Japanese-production KYB stock.
What the plate on this unit reads: KYB Corporation Japan, MSF-50-45, internal part B0440-50016, serial 560021.
Terms: genuine-type grade, sold without warranty as with all original-equipment and used stock. A Chinese-made equivalent with a three to six month warranty is listed separately.
Part: 4634936 (also listed as 4634947 and 4659032) fan drive hydraulic motor for Hitachi Zaxis excavators, supplied here as Japanese-production original-equipment type stock.
What the unit in these photographs carries: a Parker Denison nameplate reading model M5BF 045, code 024-94578-0, serial 12L03 338, Made in France, with Deere-Hitachi cast numbers on the housing.
Condition and terms: origin Japan. As with all genuine and used items we sell, this grade is supplied without a warranty. If you need warranty cover, take the Chinese-made equivalent instead.