Wet Marine Exhaust Manifold 3923312 3923313 for Cummins 4B 4BT 4BTA 3.9L

Wet Marine Exhaust Manifold for Cummins

This water-cooled exhaust manifold routes exhaust gases and regulates temperature on marine engines, referencing part numbers 3923312 and 3923313.

Overview

This Wet Marine Exhaust Manifold for Cummins is engineered to replace worn or cracked manifolds on marine diesel setups. Built to withstand harsh marine environments, this Wet Marine Exhaust Manifold provides efficient cooling to protect the engine bay from extreme heat. Commercial operators and recreational boaters rely on this Wet Marine Exhaust Manifold for consistent engine performance and safety on the water.

Built For Performance

• Cast-iron construction provides outstanding thermal endurance
• Water-jacketed design lowers engine compartment temperatures
• Precision-machined mating surfaces prevent dangerous exhaust leaks
• Corrosion-resistant coating protects against harsh saltwater exposure

Fits These Machines

• for Cummins 4B 3.9L
• for Cummins 4BT 3.9L
• for Cummins 4BTA 3.9L

On-The-Job Use

• Replacing corroded manifolds on commercial fishing boats
• Conducting routine marine engine overhauls and maintenance
• Restoring exhaust flow and cooling efficiency on pleasure craft

Specs At A Glance

Good To Know

Q: Why is a wet exhaust manifold used instead of a dry one in marine applications? A: Water-jacketed manifolds cool exhaust gases and lower the engine room temperature to prevent fire hazards in enclosed boat compartments.

Q: Does this manifold include mounting gaskets and hardware? A: This listing is for the manifold itself, so fresh gaskets and mounting hardware should be sourced separately for installation.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.