Description
Overview:
The 30 mm Core Plug for Yanmar 3TNA72L-UB engine (part number 27243-300000) is a genuine Yanmar component that seals the coolant passages in the engine block. Made from durable metal, it provides a tight, reliable seal to help prevent coolant leaks and protect against overheating. Designed for Yanmar industrial diesel engines, it fits models including 3TNA72L and 3TNA72L-UB commonly used in compact construction and groundcare machinery. With a precise 30 mm diameter (1.18 inches), this plug matches OEM sizing for correct seating and lasting performance. Choose this genuine part when replacing a worn or corroded plug during servicing or rebuilds to maintain cooling system integrity and keep your equipment running efficiently.
Key Features:
- Genuine Yanmar part for assured compatibility and quality
- Exact 30 mm diameter (1.18 inches) for a precise, secure fit
- Durable metal construction for long service life
- Helps prevent coolant leaks to support stable operating temperatures
- Press-fit design for straightforward replacement during maintenance or overhauls
- Engineered to resist corrosion in harsh operating conditions
- Maintains cooling system integrity under vibration and load
- Suitable for Yanmar 3TNA72L series engines in compact machinery
Typical Applications:
Used to reseal the engine block water jacket when replacing a leaking or corroded plug on Yanmar 3TNA72L series engines. Common during engine servicing, rebuilds, or preventative maintenance on compact excavators, loaders, groundcare equipment, and stationary power units to restore cooling system reliability and prevent coolant loss.
Also known as:
Welch plug, frost plug, block plug, coolant gallery plug, cylinder block core plug. These terms describe the same type of press-fit plug used to close casting openings in the engine block's cooling passages.
Fits Models:
3TNA72L
3TNA72L-UB
Alternate Part Numbers:
27243-30000, 27243300000, 2724330000
Product Specifications
| L&S Part No. | 27243 300000 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Yanmar |
| OEM No. | 27243-300000 |
| Unit of Sale | 1 |
| Applications | 3TNA72L, 3TNA72L-UB |
| Machine Type | Engines |
| Fits Brands | Yanmar |
| Fits Models | 3TNA72L |
