Sierra Exhaust Hose 4 Inch I.D., Replaces Volvo Penta 3852741 and 3863450, Part 18-2780-1

The Sierra 18-2780-1 Exhaust Hose is a 4 inch inside diameter exhaust hose built for Volvo Penta stern drive exhaust systems. It carries hot exhaust gas and cooling water away from the engine through the stern drive exhaust path, and is constructed of plastic and rubber materials with a nominal wall thickness of 0.125 inches to withstand the heat and flexing found in a marine exhaust run. The hose is finished in black and is sold as one exhaust hose per package.

This exhaust hose is designed for a broad range of Volvo Penta stern drive engines, including 3.0L GL, GS, GI, GLM, GLP, GSM, GSP, and GS; 4.3L GL, GS, GI, GXI, and OSI; 5.0L FL, FI, GL, GXI, and OSI; 5.7L GL, GI, GXI, OSI, OSXI, GIL, and GXIL; 5.8L FL, FI, and FSI; 7.4L GL, GI, and GSI; and 8.2L GSI models. It directly replaces OEM exhaust hoses 3852741 and 3863450, and each Sierra part is built to meet or exceed the original equipment part it replaces.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-2780-1
• Product Type: Exhaust Hose
• Inside Diameter: 4 inches
• Nominal Wall Thickness: 0.125 inches
• Material: Plastic, Rubber
• Color: Black
• Weight: 0.76 pounds
• Quantity: One exhaust hose per package

Fitment

• Volvo Penta 3.0L GL, GS, GI, GLM, GLP, GSM, GSP, GS
• Volvo Penta 4.3L GL, GS, GI, GXI, OSI
• Volvo Penta 5.0L FL, FI, GL, GXI, OSI
• Volvo Penta 5.7L GL, GI, GXI, OSI, OSXI, GIL, GXIL
• Volvo Penta 5.8L FL, FI, FSI
• Volvo Penta 7.4L GL, GI, GSI
• Volvo Penta 8.2L GSI

Replaces (OEM)

• 3852741
• 3863450

Frequently Asked Questions

What is the inside diameter of the Sierra 18-2780-1 exhaust hose? The Sierra 18-2780-1 exhaust hose has a 4 inch inside diameter.

Which Volvo Penta engines does the 18-2780-1 exhaust hose fit? Part 18-2780-1 fits Volvo Penta 3.0L (GL, GS, GI, GLM, GLP, GSM, GSP, GS), 4.3L (GL, GS, GI, GXI, OSI), 5.0L (FL, FI, GL, GXI, OSI), 5.7L (GL, GI, GXI, OSI, OSXI, GIL, GXIL), 5.8L (FL, FI, FSI), 7.4L (GL, GI, GSI), and 8.2L (GSI) stern drives.

What OEM part numbers does this exhaust hose replace? Yes, the Sierra 18-2780-1 directly replaces OEM exhaust hoses 3852741 and 3863450.

How many hoses come in a package? One exhaust hose is included per package of the Sierra 18-2780-1.

What is the exhaust hose made of? The 18-2780-1 exhaust hose is constructed of plastic and rubber materials, finished in black.

How thick is the hose wall? The nominal wall thickness of the Sierra 18-2780-1 exhaust hose is 0.125 inches.

How much does the Sierra 18-2780-1 exhaust hose weigh? This exhaust hose weighs 0.76 pounds.

Is the Sierra 18-2780-1 a genuine OEM part or aftermarket? The 18-2780-1 is a Sierra aftermarket exhaust hose engineered to meet or exceed the original equipment part it replaces, specifically OEM numbers 3852741 and 3863450.

Can this hose be used for the raw water side of the exhaust system? The Sierra 18-2780-1 is designed as an exhaust hose for the exhaust path on the Volvo Penta stern drive engines listed in its fitment, carrying exhaust gas away from the engine.

Does the 18-2780-1 exhaust hose come with clamps? The package for the Sierra 18-2780-1 includes one exhaust hose; no additional components are listed as included.