John Deere Viscous Fan Clutch 8420 8420T RE274876 | Raim Store

Viscous Fan Clutch for John Deere Tractors 8420 8420T Ref RE274876 - 74712518

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74712518

Engine cooling fan viscous clutch part number 74712518 for John Deere tractors model 8420 (from serial number 15167 onwards) and 8420T (from serial number 902388 onwards). Heavy-duty cooling system replacement designed to match original equipment standards, fully compatible with OEM part number RE274876.

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€459.00
Tax included
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- € 9,18
Final price: € 449,82
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John Deere Viscous Fan Clutch - Part Number: 74712518

The Viscous Fan Clutch (part number 74712518, original John Deere OEM reference RE274876) is a precision thermodynamic fan drive engineered to automatically modulate radiator cooling fan speed based on real-time engine coolant temperatures. Tailored for late-production machinery, it ensures optimum thermal balance and significantly reduces parasitic engine drag on heavy-duty wheeled and tracked John Deere 8420 (from serial number 15167 onwards) and 8420T (from serial number 902388 onwards) tractors.
Key Features & Benefits
  • Thermodynamic Automated Regulation: Thermosensitive internal silicone fluid smoothly modulates torque transfer to the fan blades only when required, preventing engine overheating under peak field draft loads.
  • Fuel Economy & Reduced Parasitic Drag: Eliminates continuous fan drag under moderate engine temperatures, freeing engine horsepower, lowering fuel consumption, and reducing fan noise.
  • Heavy-Duty Architecture: Engineered with reinforced bearings and high-grade seals built to endure harsh agricultural environments, severe vibration, and fine field dust.
  • Exact Direct OEM Fitment: Manufactured strictly to original John Deere RE274876 pilot dimensions, bolt patterns, and dynamic balance specifications for straightforward installation.
Technical Specifications
Product Code 74712518
Component Type Viscous fan clutch / Thermostatic fan drive
Operating Mechanism Thermodynamic progressive torque transfer via silicone fluid
John Deere OEM Reference RE274876
Application Table & Compatible John Deere Models
Tractor Series Specific Model Serial Number Break (Chassis / Serial No.) OEM Reference
8020 Series 8420 From serial number 15167 → onwards RE274876
8020T Series (Tracked) 8420T From serial number 902388 → onwards
Technical Note: Always store and handle the viscous clutch in an upright/vertical position prior to assembly to prevent silicone fluid displacement. Carefully verify the tractor serial number break (8420 from s/n 15167; 8420T from s/n 902388) to distinguish it from the earlier series unit (RE184071 / code 74712517).
: 74712518
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