21371339

Description

Overview

21371339 is a Gasket used in the exhaust and aftertreatment sealing system. It is designed for CUMMINS engines and supports sealing joints between exhaust and aftertreatment components in heavy duty service. Cummins produces heavy duty diesel engines widely used in class 8 highway tractors and vocational trucks.

What this part does

This gasket provides a gas tight seal between exhaust and aftertreatment components. Good sealing helps maintain exhaust flow, protect sensors, and avoid soot streaking at joints.

Where this part fits

This part is generally used on CUMMINS engine platforms installed in class 8 trucks and heavy equipment. Exact fitment depends on the specific engine family, emission level, and chassis configuration.

Installation and replacement notes

• Confirm compatibility with the engine family and emission certification level before ordering.
• Inspect related components for damage or contamination that may have contributed to the original failure.
• Follow OEM torque specifications and service procedures during installation.
• Gaskets should usually be replaced any time a joint is opened. Clean the sealing surfaces and align the gasket carefully before final tightening.

Specifications

• Part type: Gasket
• OEM or application group: CUMMINS

Related components

During service you may also need clamps, gaskets, sensors, mounting hardware, or additional aftertreatment components depending on the specific installation.