ISF2.8 Piston Ring 4976251 for Cummins Engine Parts | Diesel Engine Rings

Product Details

Product Overview

This is a high-quality Piston Ring Set, specifically designed for the Cummins ISF2.8 diesel engine. The set includes the exact part number 4976251, ensuring a precise fit and reliable performance for your engine rebuild or maintenance project.

Sourced from, a trusted brand in the Guangdong province of China, this piston ring set is manufactured to OEM size specifications. It is a critical component for maintaining compression, controlling oil consumption, and reducing emissions in your Cummins ISF2.8 engine. Please verify your engine model and part number before purchase to ensure compatibility.

Key Features & Benefits

• Exact OEM Fitment: Manufactured to the exact specifications of the OEM part number 4976251, guaranteeing a perfect fit for your Cummins ISF2.8 engine without the need for modifications.
• Durable Construction: Built from high-grade materials to withstand the extreme heat and pressure within a diesel combustion chamber, ensuring a long service life and reduced maintenance frequency.
• Optimized Compression: The precisely engineered ring profile helps maintain optimal cylinder compression, leading to improved engine power, fuel efficiency, and smoother operation.
• Effective Oil Control: Designed to provide excellent oil scraping action, minimizing oil consumption and preventing excessive carbon buildup in the combustion chamber.
• Reduced Emissions: By maintaining proper sealing and combustion efficiency, this piston ring set helps your engine meet emission standards and run cleaner.
• Complete Set: This product includes all the necessary rings for one piston, simplifying your rebuild process.

Technical Specifications

OEM Cross-Reference

This piston ring set is the direct replacement for the following OEM part number:

• 4976251 (Cummins)

Please confirm your existing part number matches this reference before ordering.

Compatibility

This product is specifically designed for the Cummins ISF2.8 diesel engine. This engine model is commonly used for a wide range of applications, including:

• Construction: Mini excavators, skid steer loaders, backhoe loaders.
• Industrial: Forklifts, generators (gensets), compressors.
• Agricultural: Tractors, harvesters.
• Marine: Auxiliary engines.
• Handling: Aerial work platforms, telehandlers.

Note: Fitment is inferred based on the engine model. Always verify your specific vehicle or equipment’s engine model and part number.

Global Supply & Distribution

Based in Guangdong, China, we are strategically located near major international ports, allowing for efficient and fast global shipping. We serve a worldwide network of B2B buyers, including distributors, workshops, and fleet operators.

Major Markets:

• North America: USA, Canada, Mexico
• Europe: UK, Germany, France, Netherlands, Poland
• Asia-Pacific: Australia, Japan, South Korea, Southeast Asia
• Middle East & Africa: UAE, Saudi Arabia, South Africa
• South America: Brazil, Argentina, Chile

We offer flexible shipping options (sea, air, express) to meet your delivery timelines and budget. Our experienced export team handles all documentation for smooth customs clearance.

Quality Assurance

We prioritize quality to ensure our parts meet or exceed OEM standards.

• Manufacturing Standards: Our parts are manufactured in ISO-certified facilities with strict quality control processes.
• Testing: A Machinery Test Report is provided to verify performance. We also offer Video Outgoing Inspection to give you visual confirmation of the product before shipment.
• Warranty: We stand behind our products with a 6-month warranty against manufacturing defects.
• After-Sales Support: Our team provides Online Support after the warranty period to assist with any technical questions.

FAQ

Q1: How can I be sure this piston ring set (4976251) will fit my Cummins ISF2.8 engine?

A: This part is specifically designed for the Cummins ISF2.8 engine model. To confirm fitment, please check the part number on your existing piston ring set. It should read “4976251”. If your engine is an ISF2.8 but uses a different ring part number, please contact us with your engine serial number for cross-verification.

Q2: Do I need to replace the piston rings in a specific order or orientation during installation?

A: Yes, correct installation is critical. Piston rings are typically marked with a “TOP” or “UP” indicator. The oil control ring and compression rings must be installed in the correct grooves and with the specified gap orientation (usually staggered around the piston). We recommend consulting your official Cummins service manual for the exact installation procedure and gap specifications for the ISF2.8 engine.

Q3: What other parts should I replace at the same time as the piston rings for a complete ISF2.8 rebuild?

A: For a proper engine overhaul, it is highly recommended to replace the following components simultaneously: cylinder liners (if applicable), main bearings, connecting rod bearings, thrust washers, cylinder head gasket, valve stem seals, and oil seals. Replacing these parts together ensures a balanced rebuild and maximizes the lifespan of your engine. We can supply a full engine rebuild kit for the ISF2.8 upon request.