SIERRA Cogged V-Belt, 40 in. x 29/64 in. – 18-15400

Description

SIERRA Cogged V-Belt, 40 in. x 29/64 in. – 18-15400 is a marine replacement cogged V-belt built to transfer accessory-drive load while maintaining flexibility and stable pulley contact.

This belt has an effective length of 40 in. (101.6 cm) and a 29/64 in. (11.5 mm) top width. Use the OEM references below to confirm the correct belt for the engine and accessory-drive layout.

Key Features

• High-strength synthetic cords resist shock loading
• Low-stretch construction helps maintain consistent belt performance
• Rubber compression section transfers load smoothly to the cords
• Precision-moulded cogs improve flexibility and provide cooling airflow
• Rubber sidewalls maintain positive contact with pulley grooves

Specifications

• Manufacturer Part Number: 18-15400
• Belt Type: Cogged V-belt
• Effective Length: 40 in. / 101.6 cm
• Top Width: 29/64 in. / 11.5 mm
• Application: Selected MerCruiser/OMC marine accessory drives

Interchange / Cross Reference

• Mercury/MerCruiser 57-32850
• Mercury/MerCruiser 57-69143T
• OMC 311606

Always match the original OE belt number and accessory configuration; similar engine models can use different belt lengths.