1133421391 Piston Cooling Oil Jet for ISUZU Engines

The 1133421391 Piston Cooling Oil Jet is a precision-engineered component designed to regulate and direct engine oil toward the underside of the piston. This controlled oil spray reduces piston crown temperature and stabilizes thermal expansion. As a result, friction decreases and component wear is minimized. Therefore, a reliable piston cooling oil jet is essential for maintaining engine durability, especially in heavy-duty ISUZU applications.

Manufactured to OEM specifications, the 1133421391 Oil Jet ensures accurate oil flow rate and consistent spray pattern. Moreover, its calibrated orifice delivers oil exactly where it is needed during high-load operation. Because modern diesel engines operate at elevated temperatures and pressures, this oil jet is produced using heat-resistant materials and tight tolerances. Consequently, long-term reliability and stable cooling performance are achieved.

Effective Piston Temperature Control

This piston cooling oil jet plays a critical role in thermal management. Since oil is sprayed directly onto the piston underside, excess heat is quickly dissipated. Furthermore, controlled cooling prevents piston distortion and ring damage. As a result, combustion efficiency improves and engine performance remains consistent even under demanding conditions.

OEM-Grade Precision and Durability

The 1133421391 Piston Cooling Oil Jet features a compact design with precision-machined passages. Therefore, it withstands continuous oil pressure and temperature fluctuations. In addition, corrosion-resistant material protects against oil contamination. Consequently, the oil jet maintains stable operation throughout extended service intervals.

Main Advantages

• Reduces piston operating temperature.
• Improves engine thermal stability.
• OEM-calibrated oil flow rate.
• High resistance to heat and pressure.
• Supports piston and ring longevity.
• Enhances overall engine efficiency.
• Designed for long service life.

Technical Specifications

• Part Number: 1-13342139-1 / 1133421391
• Part Name: Piston Cooling Oil Jet
• Application: ISUZU diesel engines
• Function: Directs cooling oil to piston
• Material: Heat-resistant metal alloy
• Condition: New OEM-quality component
• Installation: Direct replacement

Installing the 1133421391 Oil Jet helps maintain optimal piston temperature and prevents premature engine wear. For additional lubrication components, explore our ISUZU Engine Lubrication Parts and ISUZU Internal Engine Parts sections.

For official engine lubrication standards, consult ISUZU Motors. Additional technical insights on piston cooling systems are available at MAHLE.