Product Description:
The FPI 0.75 Oversize Piston with Pin is engineered for the Mitsubishi 4D55 diesel engine, offering a reliable replacement solution for engines requiring a slightly larger piston due to cylinder wear. Designed to meet Mitsubishi’s OEM specifications, this piston ensures a precise fit, optimal performance, and restored compression—essential for maintaining power and efficiency in diesel applications.

This 0.75 mm oversize piston is crafted to bring back factory power and fuel efficiency in high-mileage or worn engines. The package includes 1 piston and 1 wrist pin for an accurate and secure fit. With OEM part number MD103325, this piston aligns with Mitsubishi’s standards, making it a trusted replacement for the 4D55 engine.

Product Details and Specifications:

• Brand: FPI
• Part Type: Piston with Pin
• Compatible Engine Model: Mitsubishi 4D55 Diesel Engine
• Size: 0.75 mm Oversize
• Material: High-grade alloy steel body
• OEM Part Number: MD103325
• Quantity: 1 piston and 1 wrist pin

Size Details:

• Outer Diameter: 90.75 mm (0.75 mm oversize to compensate for cylinder wear)
• Pin Diameter: 30 mm
• Piston Height: 102 mm
• Crown Thickness: 7 mm – reinforced for durability under high-pressure and high-temperature conditions
• Wall Thickness: 4.5 mm for extended wear resistance
• Pin Length: 85 mm

Weight:

• Total Weight: 1050 grams per piston and pin set

Technical Specifications:

• OEM Compliance: Built to Mitsubishi’s OEM standards, ensuring compatibility and reliable performance.
• Compression Restoration: Specifically engineered to restore the original compression ratio, helping regain factory-level power output and fuel efficiency.
• Durable Design: Built to handle the demands of diesel engines operating under high loads.
• Thermal Management: Designed for efficient heat dissipation, preventing hotspots and extending piston life.
• Noise Reduction: Precision-engineered to reduce piston slap, ensuring quieter engine performance.

Car Compatibility or Fitment:

• Car Make: Mitsubishi
• Engine Compatibility: 4D55 Diesel Engine, commonly used in various Mitsubishi models
• Model Fitment: Suitable for models equipped with the Mitsubishi 4D55 engine (verify specific models for compatibility)
• OEM Compatibility Number: MD103325 – ensures precise fit and function

Benefits and Advantages:

• Enhanced Durability: Made from high-grade materials to withstand the demands of diesel engines.
• Restores Engine Performance: OEM-compliant design helps restore lost compression, fuel efficiency, and power output, bringing the engine back to optimal performance.
• Long-Term Durability: Constructed from durable materials with precise engineering, ideal for high-compression diesel applications.
• Improved Fuel Efficiency: Designed for efficient combustion, aiding in reduced fuel consumption.
• Quiet Operation: Precision engineering minimizes piston slap and engine noise, resulting in smoother engine performance.
• Oversize Fitment: Ideal for engines requiring a 0.75 mm oversize piston to restore performance in worn cylinders.

Warranty and Return Policy:

• Warranty: 1-Year Limited Warranty covering manufacturing defects.
• Return Policy: 14-day return policy if unused and in original packaging. Confirm compatibility before installation to qualify for a return.

Additional Information:

• Installation Recommendations: Professional installation is recommended to ensure proper fitment and alignment. Lubricate during installation to avoid wear during the break-in period.
• Usage Suitability: Suitable for high-mileage diesel engines, industrial applications, and engines needing an oversize piston for consistent performance.
• Manufacturing Quality: Each piston undergoes rigorous quality control checks to ensure it meets OEM standards for durability and fitment.
• Certifications: Made to OEM specifications for compatibility and reliability, trusted by mechanics and engine rebuilders worldwide.

Why Choose FPI 0.75 Oversize Piston for Mitsubishi 4D55 Engine?

This FPI 0.75 Oversize Piston with Pin is an ideal solution for Mitsubishi 4D55 engines that require a larger piston due to cylinder wear. Designed to meet OEM specifications, this piston ensures reliable performance and durability, helping to restore engine power and efficiency. Built to handle the demands of diesel applications, this high-quality piston is an excellent choice for maintaining your Mitsubishi 4D55 engine’s performance.