Product Details

Piston Kit for Yanmar Engine 3TNV76 3TNB78 Replacement

Premium Engine Overhaul Solutions | Part Numbers 119717-22080 & 119818-22080 | Global Logistics

Reliable Piston Supply for Yanmar TNV and TNB Series

Maintaining high compression and combustion efficiency in your Yanmar 3TNV76 and 3TNB78 engines requires precision-engineered internal components. Our specialized inventory focuses on 119717-22080 and 119818-22080 pistons, designed to meet or exceed original equipment manufacturer standards. Whether you are performing a routine maintenance check or a complete engine rebuild, these parts ensure the longevity of your machinery.

Technical Specifications and Model Compatibility

No.	Engine Model	Part Number	Alternative Code	Product Details
1	Yanmar 3TNV76	119717-22080	11971722080	Piston with Pin and Clips
2	Yanmar 3TNB78 / 3TNV78	119818-22080	11981822080	Heavy Duty Compression Piston
3	Yanmar 3TNV76 Series	119811-22080	11981122080	Standard Size Replacement
4	Yanmar 4TNV94 / 4TNV98	129403-22010	12940322010	Precision Combustion Type
5	Yanmar 4TNE94 / 4TNE98	129100-22080	12910022080	Industrial Grade Finish

Model NO.	3TNV76, 3TNB78, 3TNV78, 4TNV94, 4TNE94
Product Name	Engine Piston / Overhaul Kit
Part Number	119717-22080, 119818-22080, 119811-22080, 129403-22010, 129100-22080
Condition	Brand New, OEM Standard Replacement
Payment Terms	T/T, Western Union, MoneyGram
Delivery Methods	Express: DHL Fedex EMS UPS or by Air / Sea
MOQ	1 Piece
Packaging	Industrial Export Packing
Stock Status	In Stock / Fast Dispatch
Application	Engine rebuild, overhaul, maintenance

Comparison: Why Professionals Choose Our Pistons

Selecting the right components for a 3TNV76 rebuild is critical for performance. Below is a comparison of our supply versus standard aftermarket options.

Core Sourcing Point	Our OEM Standard Replacement	Common Market Aftermarket
Material Composition	High-silicon aluminum alloy for thermal stability	Lower grade recycled aluminum
Dimensional Accuracy	Micron-level tolerance (matches 119717-22080 specs)	Higher tolerance variances
Ring Groove Treatment	Anodized or reinforced top ring grooves	Untreated surface
Engine Life Span	Extended service life (10,000+ hours)	Uncertain, prone to premature wear
Heat Resistance	Designed for high-load industrial cycles	Risk of expansion and seizing
Certification	Tested for 3TNV76 and 3TNB78 dynamics	Generic fitment

Direct Sourcing & Quote Request

Get immediate pricing and availability for 119818-22080 and other Yanmar engine parts.

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Expert Inspection and Support Board

Not sure how this issue affects your equipment?

Our team helps operators navigate complex maintenance challenges:

✔ Identify potential risks during maintenance like cylinder scoring.
✔ Recommend suitable replacement parts if needed for 3TNB78 models.
✔ Support both inspection advice and comprehensive parts supply.

Whether you are dealing with blue smoke, low compression, or engine knocking, our technical support ensures you get the right engine rebuild parts without guesswork.

Frequently Asked Questions (FAQ)

Why does my Yanmar 3TNV76 engine have excessive blow-by?

Excessive blow-by is often caused by worn piston rings or a damaged 119717-22080 piston crown. Replacing the piston assembly restores the seal within the cylinder, reducing crankcase pressure and oil consumption.

Can I use 119818-22080 in a 3TNV78 engine?

Yes, the 119818-22080 is a common part number for the 78mm bore series, including 3TNV78 and 3TNB78. Always verify the serial number to ensure correct ring groove configuration.

What are the signs that I need a 129403-22010 piston replacement?

Common signs include loss of power, hard starting when cold, and visible scuffing on the piston skirts during a bore inspection. Using an OEM standard replacement prevents further damage to the cylinder liner.

Why Choose This Piston?

Our pistons feature an OEM-standard tri-metal structure and are trusted by repair shops and equipment fleets globally for their durability in harsh environments.

Global Engine Parts Specialist: We provide a comprehensive range of components for brands like Cummins, Komatsu, Caterpillar, Isuzu, Kubota, Yanmar, and Weichai. Our core expertise includes full engine assemblies and critical spares.

Our Product Scope Includes: Cylinder Liners, Engine Pistons, Piston Rings, Main Bearings, Connecting Rod Bearings, Thrust Washers, Full Overhaul Gasket Kits, Diesel Fuel Injection Pumps, Fuel Injectors, Forged Crankshafts, Turbochargers, Water Pumps, Oil Pumps, Cylinder Blocks, Cylinder Heads, and Connecting Rods.

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