Premium 4933120 Engine Piston For Cummins 6d114 6ct Isc Isl Qsl 8.3l 8.9l Diesel Engine Parts

Product Details

Product Overview

This premium engine piston, identified by OEM part numbers 4933120 and 3973265, is a direct replacement component designed for the Cummins 6CT, ISC, ISL, QSC8.3, and QSL9 series diesel engines. Engineered for heavy-duty applications, this piston is a critical component for maintaining compression and ensuring optimal combustion efficiency in your machinery.

Manufactured with a robust steel-top aluminum alloy construction, this piston features a standard bore diameter of 114mm. It is commonly used in a wide range of equipment including heavy-duty trucks, excavators, construction machinery, and industrial generator sets. Whether you are rebuilding an engine for a fleet vehicle or performing a major overhaul on an excavator, this piston provides the reliability and performance required for demanding work environments.

Key Features & Benefits

• Precision Engineering: Manufactured to exact OEM specifications (4933120 / 3973265) for direct fitment and reliable performance in Cummins 6CT, ISC, and ISL series engines.
• Durable Construction: Features a steel-top design bonded to an aluminum alloy skirt, offering superior heat resistance and strength for high-stress, turbocharged diesel applications.
• Standard Size Fitment: This is a standard 114mm bore piston, ideal for standard engine rebuilds without the need for overboring the cylinder block.
• Reduced Downtime: Designed for easy installation and long service life, helping to minimize operational interruptions and maintenance cycles for your heavy equipment.
• Rigorous Quality Control: Each piston undergoes strict factory testing, including video outgoing inspection and machinery test reports, ensuring consistent quality and performance.
• Versatile Application: Suitable for a wide array of heavy-duty machinery, including on-road trucks and off-road construction equipment like excavators and loaders.

Technical Specifications

OEM Cross-Reference

This piston is a direct replacement for the following OEM part numbers. Please verify your engine’s specific requirements before ordering.

• Cummins OEM: 4933120, 3973265

Note: Always cross-reference your old part with the numbers listed above to confirm compatibility.

Compatibility

This 114mm piston is commonly used for the following engine platforms and applications. Fitment is inferred based on OEM specifications.

• Engine Models: Cummins 6CT, ISC, ISL, QSC8.3, QSL9 (8.3L & 8.9L displacements)
• Vehicle & Equipment Applications: Heavy-duty trucks, excavators, construction machinery, and industrial generator sets.

Global Supply & Distribution

We are an experienced exporter of heavy-duty diesel engine parts, serving a global network of B2B clients. Our logistics capabilities ensure fast and reliable delivery to major markets worldwide.

• Major Markets: North America (USA, Canada, Mexico), Europe (Germany, UK, Netherlands), Asia-Pacific (Australia, Singapore, UAE), Middle East (Saudi Arabia, UAE), and Africa.
• Shipping: We offer flexible shipping options including sea freight (FOB/CIF) to major ports like Shanghai, Shenzhen, and Ningbo, as well as express air freight (DHL, FedEx, UPS) for urgent orders.
• Export Compliance: All products are packed and documented in full compliance with international trade regulations, ensuring smooth customs clearance.

Quality Assurance

Quality is our top priority. Each component is manufactured under strict quality control systems to ensure it meets or exceeds OEM standards.

• Testing: Pre-shipment machinery test reports and video outgoing inspection are provided upon request to verify product quality.
• Warranty: This product comes with a standard warranty of 6 months to 1 year against manufacturing defects.
• Standards: Our manufacturing processes adhere to international quality benchmarks for diesel engine components.

FAQ

Q1: How do I confirm that this 4933120 piston fits my engine?
A: First, check the part number on your existing piston. It should match either 4933120 or 3973265. Second, verify that your engine is a Cummins 6CT, ISC, ISL, QSC8.3, or QSL9 model with an 8.3L or 8.9L displacement. Finally, measure your cylinder bore to ensure it is the standard 114mm size and has not been previously overbored.

Q2: Can I use this standard size 114mm piston if my cylinder block has been reconditioned?
A: This piston is designed for a standard 114mm bore. If your cylinder block has been honed or reconditioned, it is critical to measure the bore precisely. If the bore has been enlarged beyond the standard tolerance (e.g., for a 0.50mm or 1.00mm oversize), you will need a corresponding oversize piston. We recommend consulting your engine manual or a professional machinist before installation.

Q3: What is the recommended installation procedure for this piston?
A: Installation should be performed by a qualified diesel mechanic. Key steps include: cleaning the cylinder bore thoroughly, lubricating the piston and rings with clean engine oil, using a proper ring compressor to install the piston into the bore, and torquing the connecting rod bolts to the manufacturer’s specifications. Always replace the piston rings and wrist pin bushings during an overhaul for optimal performance.