Description
Overview:
The Cam Shaft for Robin/Subaru EX21 is a genuine replacement part that restores correct valve timing and dependable running in EX21 petrol engines used on construction and garden machinery. Manufactured from durable metal for long service life, it features an integral timing gear to synchronise the crankshaft and valves, helping the engine start reliably and run smoothly under load. This part is designed specifically for the Robin/Subaru EX21 platform for precise fit and performance. It is a direct replacement for OEM No. 277-31601-01 and suits routine maintenance or a full engine rebuild. Suitable for tradespeople, DIY users, and fleet maintenance, it helps keep equipment such as plate compactors, generators, water pumps, and concrete mixers operating efficiently with minimal downtime.
Key Features:
- Genuine Robin/Subaru part for assured compatibility and quality
- Direct replacement for OEM No. 277-31601-01
- Designed for the EX21 engine for correct fit and timing accuracy
- Robust metal construction for wear resistance and long life
- Integral timing gear for precise valve actuation
- Helps maintain smooth idling, reliable starting, and consistent power
- Supports efficient combustion and stable engine performance
- Suitable for professional and DIY engine servicing
- Straightforward installation when following the EX21 service manual
- Ideal for restoring performance where the original cam gear or lobes are worn
Typical Applications:
Used in EX21-powered equipment found on site and in the garden, including plate compactors, generators, water pumps, pressure washers, tillers, chippers, and mixers. Fits machines that specify a Robin/Subaru EX21 engine and require an OEM camshaft replacement to reinstate dependable running and correct valve timing.
Also known as:
Camshaft, camshaft gear, cam gear, timing cam, valve timing gear, EX21 cam, engine timing gear. These terms may be used in service manuals and parts lists to describe the same component that controls valve opening and closing in the EX21 engine.
Fits Models:
EX21
Alternate Part Numbers:
RB277-31601-01, RB2773160101, 277-31601-01, 277 31601 01, 2773160101
Product Specifications
| L&S Part No. | RB277 31601 01 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Robin/Subaru |
| Unit of Sale | 1 |
| Machine Type | Engines |
| Fits Brands | Robin |
| Key Features | - Genuine Robin/Subaru part ensures compatibility with EX21 engines - Direct replacement for OEM No. 277-31601-01 - Integral timing gear synchronises crankshaft and valves - Durable metal construction for long service life - Suitable for EX21-powered construction and garden machinery |
| Fits Models | EX21 |



