R51936 is a John Deere sealing washer sleeve (also called a grommet injector line seal). It is a small but critical rubber component used in John Deere engines and tractors to ensure tight sealing of fuel lines and prevent leaks.

Specifications of R51936

• Part Type: Sealing washer sleeve / grommet injector line seal
• OEM Number: R51936 (also cross-referenced with R63603)
• Material: High-quality rubber with a durometer rating of 90 (ensures hardness and durability)
• Dimensions:
  • Outer Diameter: 10.50 mm (0.41 in)
  • Inner Diameter: 5.56 mm (0.22 in)
  • Thickness: 5.41 mm (0.21 in)
  • Alternative listing: Diameter 6.2 mm, Height 5.8 mm
• Function: Provides sealing of fuel injector lines against moisture, air, and impurities
• Category: Seals, gaskets, O-rings