Description
Overview:
This piston with pin and circlips is a non-genuine replacement for Yanmar 3TNV70 and 3TNV70-STB diesel engines commonly found in TB016 excavators. The piston is typically made from a durable aluminium alloy to manage heat and reduce weight, while the gudgeon (wrist) pin and circlips are steel for strength and secure retention. Together, these components transfer combustion force to the connecting rod and help maintain correct compression for reliable starting and steady power. Supplied as a matched assembly for straightforward fitting, it is suitable for routine overhauls or repairs where the original piston has worn, scored, or suffered damage. Built for dependable service, it helps restore smooth engine operation in compact plant and similar equipment using the 3TNV70 family.
Key Features:
- Non-genuine aftermarket replacement designed to fit Yanmar 3TNV70 and 3TNV70-STB engines
- Supplied with steel gudgeon pin and circlips for a complete piston assembly
- Aluminium alloy piston for good heat dissipation and strength-to-weight balance
- Engineered for correct fit and function to support compression and power output
- Helps reduce blow-by and oil consumption when installed with serviceable rings and bores
- Smooth skirt and crown surfaces to aid bedding-in and consistent performance
- Direct-fit design to minimise downtime during workshop or on-site repairs
- Suitable for preventative maintenance or full engine overhauls on compact machinery
- Cost-effective alternative to OEM, while maintaining reliable day-to-day operation
- Compatible with equipment using the Yanmar 3TNV70 engine family, including TB016 excavators
Typical Applications:
Used during engine rebuilds and top-end repairs on machinery powered by Yanmar 3TNV70-series engines. Ideal when addressing low compression, piston scoring, smoke, or oil consumption. Commonly fitted to TB016 excavators and other compact plant where restoring reliable performance and service life is required.
Also known as:
Piston kit for Yanmar 3TNV70, piston assembly with wrist pin, gudgeon pin and clips, TB016 engine piston, replacement piston for 3TNV70-series engines, diesel piston set for compact excavators.
Fits Models:
3TNV70, 3TNV70-STB
Product Specifications
| L&S Part No. | 320 380 |
|---|---|
| Unit of Sale | 1 |
| Machine Type | Excavators |
| Fits Brands | Yanmar |
| Key Features | - Fits Yanmar 3TNV70 and 3TNV70-STB engines - Includes steel gudgeon pin and circlips - Aluminium alloy piston for heat management - Supports compression and power output - Direct-fit design for easy installation |
| Fits Models | 3TNV70-STB |
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