Description
Overview:
The Exhaust Valve for JAP 444H & 444H-2 Industrial Engines is a genuine JAP replacement part (OEM 29087) designed to control the outflow of exhaust gases and maintain a reliable seal at the valve seat. Made from durable, heat‐resistant steel suitable for sustained high temperatures and pressure cycles, it helps preserve compression, power output, and fuel efficiency. This poppet‐style valve features a robust head and stem for dependable operation in demanding industrial duty. Purpose-built for JAP 444H and 444H-2 engines used in construction and plant machinery, it restores correct breathing and timing during routine maintenance or a top-end rebuild. A direct-fit component, it is engineered to work with original valve train parts where they remain within serviceable limits. Genuine JAP Part.
Key Features:
- Genuine JAP OEM part (29087) for assured fit and compatibility
- Heat-resistant steel construction for long service life under high exhaust temperatures
- Accurate sealing at the seat supports stable running and good compression
- Made to OEM tolerances for consistent performance and reliability
- Direct-fit design helps simplify replacement and reduce downtime
- Suitable for routine servicing and full overhauls of the cylinder head
- Works with standard JAP valve guides, seats, and springs when within spec
- Built for industrial duty cycles typical of construction and plant equipment
Typical Applications:
Used in JAP 444H and 444H-2 engines powering small plant and industrial equipment, including site pumps, generators, compressors, cement mixers, and other construction or agricultural machinery. Ideal when refurbishing cylinder heads, correcting poor sealing, or restoring performance after wear or heat damage.
Also known as:
Engine exhaust valve, JAP exhaust poppet valve, outlet valve, JAP 29087 valve, exhaust head valve for JAP industrial engines.
Fits Models:
444H
444H-2
Alternate Part Numbers:
29087
Product Specifications
| L&S Part No. | 29087 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | JAP |
| OEM No. | 29087 |
| Unit of Sale | 1 |
| Machine Type | Engines |
| Fits Brands | Engines |
| Key Features | - Genuine JAP OEM part for JAP 444H & 444H-2 engines - Heat-resistant steel for high-temperature durability - Direct-fit design simplifies replacement - Accurate sealing supports stable running and compression - Compatible with standard JAP valve train components |
| Fits Models | 444H |

