Sierra V-Belt 18-15410 for Volvo Penta 120 2.5L and 140 Gas Engines

The Sierra 18-15410 is a marine V-belt engineered for Volvo Penta 120 and 140 series gas engines, transferring power from the crankshaft pulley to accessories such as the sea water pump. It measures 41 inches in effective length with a top width of 29/64 inch (11.5mm), sized specifically to these Volvo Penta applications.

The belt's cogged construction is molded to precise engineering tolerances for improved flexibility and better cord support as it flexes around the pulleys. High-strength synthetic cords resist shockload failure during sudden load changes, while a rubber compression section evenly transfers load forces to those cords for consistent power delivery. Rubber edges maintain positive, no-slip contact within the pulley grooves for reliable energy transfer, and the cushioned section is designed with air circulation in mind to keep the belt cool and prevent heat-related damage. Low-stretch properties help the belt hold consistent tension and performance over its service life.

This belt fits Volvo Penta 120 (2.5L) engines built 1982-89 and Volvo Penta 140 engines built 1968-73, within the serial number ranges listed below.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-15410
• Belt Style: V-Belt (cogged)
• Effective Length: 41 inches (104.1 cm)
• Top Width: 29/64 inch (11.5 mm)
• Material: Rubber
• Color: White
• Weight: 0.24 pounds
• UPC: 030999566478

Fitment

• Volvo Penta 120, 2.5L, 1982-89, 153 CID, 4-cylinder, serial number range 6229718 - C853255
• Volvo Penta 140, 140 HP, 1968-73, 181 CID, 4-cylinder, serial number range 2508261-3770649

Frequently Asked Questions

What engines does the Sierra 18-15410 V-belt fit? This belt fits Volvo Penta 120 (2.5L) gas engines built 1982-89 within serial number range 6229718 - C853255, and Volvo Penta 140 gas engines built 1968-73 within serial number range 2508261-3770649.

What is the length and width of this belt? The 18-15410 has an effective length of 41 inches (104.1 cm) and a top width of 29/64 inch (11.5 mm).

Is the 18-15410 belt genuine Sierra or aftermarket? It is a genuine Sierra-branded marine V-belt, part number 18-15410, manufactured to fit specific Volvo Penta gas engine applications.

What material is the Sierra 18-15410 V-belt made from? It is made of rubber with a cogged design and high-strength synthetic cords for shockload resistance.

How much does the 18-15410 V-belt weigh? The Sierra 18-15410 V-belt weighs 0.24 pounds.

Will this belt fit a Volvo Penta 140 built outside 1968-73? Sierra part number 18-15410 is listed for Volvo Penta 140 engines built specifically in the 1968-73 range and serial numbers 2508261-3770649; engines outside that range should be confirmed against a different belt before ordering.

What does the cogged design on this V-belt do? The cogs on the 18-15410 are molded to precise tolerances to improve belt flexibility and maintain cord support as the belt flexes around the pulleys.

Does the 18-15410 belt run the water pump on a Volvo Penta 120 or 140? Yes, this V-belt drives accessories such as the sea water pump on Volvo Penta 120 (2.5L) and 140 gas engines.

What color is the Sierra 18-15410 belt? The 18-15410 V-belt is white.

How does this belt resist heat buildup? The cushioned section of the 18-15410 is designed with a large area for air circulation, keeping the belt cool and preventing heat damage during operation.

Is the 18-15410 a single-belt drive? Yes, the 18-15410 is a single V-belt; it is not a serpentine or multi-groove belt.

What is the UPC for the Sierra 18-15410 V-belt? The UPC for the Sierra 18-15410 V-belt is 030999566478.