Automotive Engine Components

Piston Assembly & Pin Engineered for Motion.

Piston assemblies and piston pins are important engine components that support the movement of the piston and transfer combustion force through the connecting rod. Their design and specifications depend on the intended engine application.

Explore Product How It Works

Engine Component Technology

Woojin Automotive India Pvt. Ltd.

PISTON ASSEMBLY & PIN · PRODUCT ILLUSTRATION
Product Overview

Precision Components for Engine Performance

A piston assembly operates inside an engine cylinder, responding to combustion pressure and reciprocating movement. The piston transfers force generated during combustion to the connecting rod.

The piston pin connects the piston to the connecting rod, allowing the components to articulate during engine operation. Accurate dimensions and material requirements are important for compatibility with the intended engine.

01
Piston Assembly

Moves within the cylinder and responds to combustion pressure during the engine cycle.

02
Piston Pin Connection

Connects the piston and connecting rod to support their coordinated movement.

03
Engine-Specific Design

Component dimensions and specifications must match the requirements of the target engine.

Product Functions

The Role of Piston Assembly & Pin

These components work together within the engine's reciprocating mechanism to support power transmission and controlled movement.

01

Combustion Force Transfer

The piston receives force from combustion pressure and transfers it to the connecting rod through the piston-pin connection.

02

Reliable Component Connection

The piston pin provides the mechanical connection between the piston and connecting rod, supporting movement during the engine cycle.

03

Application Compatibility

Correct dimensions, fit and other engineering requirements depend on the specific engine design and manufacturer's specifications.

Illustrative piston movement principle · Not a technical specification
How It Works

From Combustion to Mechanical Motion

During engine operation, combustion pressure drives the piston along the cylinder. The piston pin connects the piston to the connecting rod, helping transfer the reciprocating movement into the engine's rotating mechanism.

01

Combustion Generates Pressure

Combustion inside the cylinder produces pressure that acts on the piston surface.

02

The Piston Moves

The piston travels within the cylinder as part of the engine's reciprocating cycle.

03

The Piston Pin Transfers Force

The piston pin connects the piston with the connecting rod, supporting force transfer and articulated movement.

Application Overview

Engine-Specific Component Applications

Piston assemblies and piston pins are selected according to engine architecture, dimensions, operating conditions and the component requirements defined by the engine maker.

✓ Automotive internal combustion engines
✓ Piston and connecting-rod mechanisms
✓ Engine-specific piston component applications
Woojin Automotive India

Piston Components Company Milestones

Woojin Automotive India's company profile records piston-pin and piston-assembly supply milestones associated with Kappa and Epsilon engine programmes.

Company History

Automotive Component Supply Experience

The company profile documents piston-pin supplies beginning in 2013 and Kappa engine piston-assembly supplies recorded between 2017 and 2018.

August 2013

Kappa engine, 3/4-cylinder piston-pin supply recorded for HMI.

November 2013

Epsilon engine, 3-cylinder piston-pin supply recorded for HMI.

June 2017

Kappa engine 1.2L plated piston assembly supply recorded for HMI.

January 2018

Kappa engine 1.25L plated piston assembly supply recorded for HMI.

April 2018

Kappa engine 1.2L and 1.25L unplated piston assembly supply recorded for HMI.

Source: Woojin Automotive India Pvt. Ltd. Company Profile, dated 10 July 2026.