John Deere Water Pump O-Ring 74702408 R541830 | Raim Store

O-Ring Seal for John Deere Water Pump 6M 6R 7R Ref. 74702408 OEM R541830

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74702408

O-ring sealing ring part number 74702408 (OEM reference John Deere R541830). Specifically engineered to provide a tight, leak-proof seal for the engine water pump on John Deere 6068 engines powering tractor lines 6M, 6R, 7R, and series T and W combine harvesters. Manufactured from high-grade elastomeric material resistant to coolant fluids, intense thermal stress, and system pressure.

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Engine Water Pump O-Ring Seal for John Deere 6068 (6.8L) Engines - Part Number: 74702408 (OEM Ref: R541830)

The engine coolant water pump radial O-ring seal (part number 74702408, original equipment reference R541830) is a precision OEM-standard elastomeric sealing ring specifically engineered to ensure hermetic hydraulic fluid containment on cooling water pumps (matched with water pump part number 74702407) on John Deere PowerTech 6.8-liter 6-cylinder diesel engines (6068 HL, RW, and HZ series). Formulated from high-grade technical elastomer with superior thermal recovery and chemical resistance, it prevents coolant leaks and pressure drops across heavy-duty John Deere 6M, 6R, and 7R Series tractors as well as T and W Series combine harvesters.
Key Features & Benefits
  • Calibrated Precision Radial Sealing: Toroidal circular cross-section conforms strictly to factory John Deere machining tolerances, providing exact groove fitment and zero risk of high-pressure fluid extrusion.
  • Thermal & Chemical Resistance: Engineered elastomeric polymer resists degradation from continuous exposure to boiling coolant mixtures, ethylene glycol, and extended-life OAT/HOAT inhibitor packages.
  • Low Compression Set: Retains its cross-sectional elasticity and sealing force throughout long operating intervals, accommodating severe engine block thermal expansion without hardening or cracking.
  • Direct OEM Interchangeability: Direct drop-in replacement built to original equipment specifications for John Deere part number R541830.
  • Clean, Reliable Installation: Fits cleanly into the machined housing groove using a light film of fresh coolant for lubrication, completely eliminating the need for RTV silicone sealants.
Technical Specifications
Commercial Part Number 74702408
Original Equipment Reference (OEM) R541830
Product Classification Engine cooling water pump radial O-ring gasket
Associated Component Compatible with water pump part number 74702407 (OEM RE557899)
Engine Series Compatibility John Deere PowerTech 6.8L (6068 HL, RW, HZ Series)
Coolant Compatibility Ethylene glycol solutions, OAT, HOAT formulations, and treated water
John Deere Application Coverage
Series Family Compatible Machine Models
6M Series Tractors 6155M, 6175M, 6195M
6R Series Tractors 6145R, 6155R, 6175R, 6195R, 6215R, 6230R, 6250R
7R Series Tractors 7210R, 7230R, 7250R, 7270R
T Series Combine Harvesters T550
W Series Combine Harvesters W540, W550
Installation & Service Note: Thoroughly clean the pump housing O-ring groove before assembly to eliminate scale, dirt, and fragments of the previous seal. Lightly coat the new O-ring with fresh engine coolant to facilitate smooth insertion and avoid twisting, pinching, or cutting during installation. Do not use petroleum grease or liquid gasket adhesives.
: 74702408
Hurry! only 108 items left in stock.

Specific References

MPN
74702407

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