Cummins Engine Piston for NTA855 Engine (Part Numbers: 135980, 200400, 3017348)
Product Overview
This is a high-quality replacement piston specifically designed for the robust Cummins NTA855 series engines. Identified by part numbers 135980, 200400, and 3017348, this piston is manufactured to meet or exceed original equipment specifications, ensuring reliable performance and long service life for your heavy-duty equipment.

Product Specifications
Part Numbers: 135980, 200400, 3017348
Engine Compatibility: Cummins NTA855 Series
Product Type: Engine Piston
Material: High-strength Aluminum Alloy or Steel (depending on specific part number variant and application)
Treatment: Skirt coatings or other surface treatments for reduced friction and wear (may vary by part number)
Included Components: Piston only (piston rings, pin, and retainers typically sold separately)
Quality: Manufactured to OEM standards for fit, form, and function
Key Advantages & Selling Points
Precision Engineering: Manufactured with strict tolerances for optimal combustion efficiency and reduced blow-by.
Durability: Constructed from premium materials designed to withstand the extreme temperatures and pressures within a heavy-duty engine.
Reliability: A direct replacement guaranteeing compatibility and restoring engine performance to its original specifications.
Cost-Effective: Offers a high-quality alternative to OEM parts without compromising performance or longevity.
Applicable Equipment
This piston is designed for use in equipment powered by the widely used Cummins NTA855 series engine. This includes a broad range of heavy-duty machinery across various industries.
Application Scenarios & Case Analysis
The Cummins NTA855 engine is a legendary power unit known for its reliability and performance in demanding applications. Equipment utilizing the NTA855 includes:
Construction Equipment: Bulldozers, excavators, wheel loaders, motor graders (e.g., Caterpillar, Komatsu, etc., when repowered or originally fitted with NTA855 variants).
Mining Machinery: Haul trucks, large drills, shovels.
Power Generation: Industrial generator sets.
Industrial Applications: Pumps, compressors, and other heavy industrial machinery.
Marine Propulsion: Various marine vessels.
Case Example: A large construction company operating a fleet of older bulldozers equipped with Cummins NTA855 engines experienced reduced power and increased oil consumption. Diagnosis revealed worn pistons and rings. By using these replacement pistons (135980/200400/3017348), the company was able to perform in-frame overhauls, restoring engine performance, improving fuel efficiency, and extending the operational life of their valuable assets at a significant cost saving compared to engine replacement.
Related & Similar Products
In addition to the pistons, related components often needed for an engine overhaul or repair include:
Piston Rings: Essential for sealing the combustion chamber and controlling oil. Applicable to NTA855 engines.
Piston Pins (Wrist Pins): Connect the piston to the connecting rod. Applicable to NTA855 engines.
Connecting Rods: Transmit the force from the piston to the crankshaft. Applicable to NTA855 engines.
Cylinder Liners/Sleeves: Form the cylinder wall. Applicable to NTA855 engines.
Gasket Sets: Include all necessary gaskets and seals for engine assembly. Applicable to NTA855 engines.
Engine Bearings: Main and connecting rod bearings. Applicable to NTA855 engines.
Fuel Injectors: For fuel delivery. Applicable to NTA855 engines.
Turbochargers: Often found on NTA855 models for increased power. Applicable to NTA855 engines.
These components are also available for the Cummins NTA855 and other Cummins engine series like the KTA19, KTA38, M11, QSM11, etc., used in similar heavy-duty equipment.
Common Installation Issues & Solutions
Installing engine pistons requires precision and care. Here are some common issues and their solutions:
Issue: Incorrect Piston Orientation. Pistons often have specific orientations (e.g., marked with 'FRONT' or an arrow) that must align with the engine front.
Solution: Always refer to the engine service manual for correct piston orientation before installation. Mismatched orientation can lead to severe engine damage.
Issue: Damaging Piston Rings During Installation. Forcing the piston into the cylinder bore without properly compressing the rings can break them.
Solution: Use a proper piston ring compressor tool. Ensure the cylinder bore is clean and lightly oiled. Insert the piston smoothly.
Issue: Improper Cleaning of Cylinder Bore. Any debris, ridge, or unevenness in the cylinder bore can damage the new piston and rings.
Solution: Thoroughly clean and inspect cylinder bores. Remove any ridge at the top of the bore before installing new pistons. Honing the cylinders might be necessary if wear is significant.
Issue: Incorrect Piston-to-Cylinder Wall Clearance. Too little clearance can cause seizing; too much can cause blow-by and noise.
Solution: Measure piston diameter and cylinder bore diameter accurately using appropriate tools (micrometer, bore gauge). Ensure measurements are within the specifications provided in the service manual.
Issue: Forcing the Piston Pin or Retainers. Damaging the piston or connecting rod small end during pin installation.
Solution: Ensure the piston pin bore and connecting rod small end bush are clean and aligned. Use appropriate tools and follow the service manual for pin and retainer installation (snap rings or press-fit).
Always consult the official Cummins NTA855 service manual for detailed procedures, specifications, and torque values before attempting piston installation.