Home Products Diesel Engine Parts Cummins QSL9.3 L9.3 Engine Piston 5343091 | Heavy-Duty Diesel Replacement Part

Diesel Engine Parts

Cummins QSL9.3 L9.3 Engine Piston 5343091 | Heavy-Duty Diesel Replacement Part

MOQ: 1pcs Price: Negotiable

Part No.: 5343091
Engine Model: Cummins QSL9.3, L9.3
Material: High-Silicon Aluminum Alloy
Category: Diesel Engine Parts

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Product Details

L9.3 Qsl9.3 Piston 5343091 Suitable For Cummins Engine Parts

Product Overview

This premium aftermarket piston, part number 5343091, is specifically engineered for the Cummins QSL9.3 and L9.3 diesel engine platforms. Designed as a direct replacement for the OEM component, it ensures a perfect fit and reliable performance for heavy-duty applications. We supply this critical engine part to global markets including North America, Europe, Southeast Asia, the Middle East, and Africa, supporting a wide network of workshops, dealerships, and equipment maintenance operations.

Key Features & Benefits

Durable Construction: Manufactured from high-strength aluminum alloy with a reinforced steel insert for the piston pin bore, providing exceptional resistance to thermal and mechanical stress.
Advanced Ring Pack: Designed for use with an optimized ring set to reduce oil consumption and blow-by, improving combustion efficiency and lowering emissions.
Precision Engineering: Machined to exacting tolerances to match the cylinder bore and connecting rod, ensuring minimal friction and extended engine life.
Direct OEM Replacement: Identical dimensions and specifications to the original Cummins piston (5343091), guaranteeing a trouble-free installation.
Enhanced Durability: Features a robust crown design to withstand the high peak cylinder pressures of the QSL9.3 and L9.3 turbocharged engines.

Technical Specifications

Specification	Detail
Product Name	Engine Piston
Part Number	5343091
Engine Models	Cummins QSL9.3, L9.3
Material	High-Silicon Aluminum Alloy
Pin Diameter	50.00 mm
Compression Height	75.50 mm
Ring Grooves	3 (2 Compression + 1 Oil Control)
Manufacturing Process	CNC Machined

OEM Cross-Reference

This piston is a direct replacement for the following OEM and original equipment part numbers:

Cummins: 5343091
OEM Reference: 5343091

Note: Always verify your existing part number to ensure compatibility. This part is an aftermarket replacement, not an OEM product.

Compatibility

Engine Models: Cummins QSL9.3, L9.3 (all variants)
Common Applications: Heavy-duty trucks, construction equipment (excavators, wheel loaders), agricultural machinery, marine generators, and industrial power units.
Note: For specific year and model fitment, please cross-reference your engine’s serial number with the OEM part number 5343091.

Global Supply & Distribution

We offer comprehensive global shipping solutions to meet the needs of B2B customers worldwide. Our logistics network ensures fast and reliable delivery to major industrial hubs.

Worldwide Shipping: Air freight, sea freight, and express courier (DHL, FedEx, UPS) available.
Major Markets Served: North America (USA, Canada), Europe (Germany, UK, Netherlands), Asia-Pacific (Australia, Singapore, UAE), Middle East (Saudi Arabia, UAE), Africa (South Africa, Nigeria).
Fast Delivery: Stocked items dispatched within 24 hours to major ports like Los Angeles, Rotterdam, Singapore, and Dubai.
Trade Compliance: Experienced in international export documentation and customs clearance.

Quality Assurance

Manufacturing Standards: Produced in ISO 9001:2015 certified facilities, ensuring consistent quality and process control.
Testing: Each batch undergoes dimensional inspection, material composition analysis, and hardness testing to guarantee compliance with OEM specifications.
Warranty: We offer a 12-month warranty against manufacturing defects from the date of purchase.

FAQ

Q: Is this piston a direct fit for my Cummins QSL9.3 engine?
A: Yes, part number 5343091 is the standard size piston for the Cummins QSL9.3 and L9.3 engines. It is a direct replacement. However, we always recommend verifying the part number on your old piston and checking the cylinder bore condition before installation.

Q: What is the installation procedure for this piston?
A: Installation should be performed by a qualified diesel mechanic. Key steps include: 1) Cleaning the cylinder bore. 2) Lubricating the piston and rings with engine oil. 3) Using a proper ring compressor to install the piston into the bore. 4) Torquing the connecting rod bolts to the manufacturer’s specification. A service manual for your specific engine model is essential.

Q: Does this piston come with the piston rings and pin?
A: This listing is for the piston only (part 5343091). The piston pin and rings are typically sold separately. We recommend using new piston rings and a new pin for a complete and reliable rebuild. Please check your requirements before ordering.