SIERRA Johnson / Evinrude Prop Nut, 1/2-13 – 18-3706

Description

SIERRA Johnson / Evinrude Prop Nut, 1/2-13 – 18-3706

Sierra 18-3706 is a Propeller nut engineered for the specified marine application. Johnson/Evinrude outboard propeller shafts using OMC/BRP nut 318971 and the specified 1/2-13 thread.

• Propeller nut for compatible Johnson/Evinrude outboard prop shafts.
• 1/2-13 thread specification.
• 13/16-inch SAE / 21 mm wrench size.
• Replaces OMC/BRP 318971 and cross-references GLM 22160.
• Use the correct cotter/keeper arrangement and torque procedure for the engine; replace damaged locking hardware during propeller service.

Fitment for marine engine and drive service parts can vary by model, serial number, gearcase, cooling configuration and prior component supersessions. Compare the original OEM number and physical configuration before installation, and renew related seals, locking hardware or adjacent wear items when their condition requires it.

Specifications

• Manufacturer: Sierra
• Part Number: 18-3706
• Part Type: Propeller nut
• Application: Johnson/Evinrude outboard propeller shafts using OMC/BRP nut 318971 and the specified 1/2-13 thread.
• Thread: 1/2-13
• Wrench Size: 13/16 in SAE / 21 mm

Interchange / OEM References

• Johnson/Evinrude Outboard: 318971
• GLM: 22160