QSC8.3 QSL9 3942749 Exhaust Rocker Lever for Cummins 6CT8.3

Exhaust Rocker Lever for Cummins

This exhaust rocker lever for Cummins actuates the engine exhaust valves to ensure precise combustion cycle timing, cross-referencing with part number 3942749.

Overview

This exhaust rocker lever for Cummins transfers force from the camshaft to open the exhaust valves in heavy-duty diesel engines. Engine response and efficiency depend on the precise movement provided by this exhaust rocker lever for Cummins. Engineered for commercial operators and heavy equipment mechanics who demand reliable engine rebuild components.

Built For Performance

• Forged from heavy-duty steel alloy to withstand high combustion pressures.
• Precision-machined contact surfaces minimize friction and wear.
• Manufactured to meet or exceed original industrial diesel specifications.
• Designed to sustain high-stress operation in heavy equipment applications.

Fits These Machines

• for Cummins 6CT8.3
• for Cummins QSC8.3
• for Cummins QSL9

On-The-Job Use

• Servicing industrial generator sets and heavy construction machinery.
• Performing top-end engine rebuilds on commercial diesel power units.
• Replacing worn or out-of-spec rocker levers during routine head overhauls.

Specs At A Glance

Good To Know

Q: What causes rocker lever wear? A: Rocker levers typically wear due to oil starvation, dirty engine oil, or high mileage, which leads to scuffing on contact surfaces.

Q: Is it necessary to replace the rocker shaft when replacing a lever? A: While not always mandatory, inspecting the rocker shaft for wear or scoring is highly recommended to ensure proper clearances and oil flow.

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