SIERRA MerCruiser Upper Drive Shaft Retainer Nut – 18-3752

Description

SIERRA MerCruiser Upper Drive Shaft Retainer Nut – 18-3752

Sierra 18-3752 is a Upper drive shaft retainer nut engineered for the specified marine application. MerCruiser upper gear-housing/U-joint input-shaft assemblies using OEM retainer 35992, 66071, 8168111/2 or superseding 8M0169040.

• Retaining nut for the upper drive-shaft / U-joint input-shaft bearing assembly in compatible MerCruiser drives.
• Cross-references MerCruiser 35992, 66071, 8168111, 8168112 and 8M0169040.
• Also cross-references GLM 28350 and Mallory 9-72154.
• Retains the bearing/shaft stack in the upper gear housing and is a critical driveline fastener.
• Use the specified service tool and torque procedure; inspect housing threads and bearing preload components during 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: 18-3752
• Part Type: Upper drive shaft retainer nut
• Application: MerCruiser upper gear-housing/U-joint input-shaft assemblies using OEM retainer 35992, 66071, 8168111/2 or superseding 8M0169040.
• System: Upper gear housing / input shaft

Interchange / OEM References

• GLM: 28350
• Mallory: 9-72154
• Mercruiser Stern Drive: 35992, 66071, 8168111, 8168112, 8M0169040