Description
Overview:
The Exhaust Valve for Robin/Subaru EX series engines is a heat‐resistant steel valve that controls the release of burnt gases from the combustion chamber. It helps protect the engine from backpressure, supports stable idle, and maintains power output and fuel efficiency. Built with a precision‐machined stem and head for reliable seating, it is a direct replacement for OEM reference 20B-33501-H3. This part is suitable for popular small petrol engines used across construction and landscaping equipment, including the Subaru EX35 and EX40. A worn or leaking exhaust valve can cause hard starting, misfires, loss of compression, and overheating; fitting a new valve restores correct gas flow and engine health during a top‐end service or rebuild.
Key Features:
- Heat‐resistant alloy steel construction for durability under high temperature and load
- Precision‐ground stem and head for consistent sealing and compression retention
- OEM‐matched geometry for correct fit and valve timing in EX series cylinder heads
- Direct replacement for OEM reference 20B-33501-H3 for straightforward identification
- Compatible with standard guides, springs, retainers, and collets used on these engines
- Helps restore starting performance, power delivery, and exhaust emissions
- Suitable for preventative maintenance and top‐end rebuilds to minimise downtime
- Smooth surface finish reduces guide wear and promotes stable lubrication
- Designed for reliability in demanding site and rental fleet conditions
- Supports long service intervals when used with correct valve lash and maintenance
Typical Applications:
Commonly used in small engine equipment such as generators, water pumps, plate compactors, rammers, pressure washers, and light construction machinery powered by Robin/Subaru EX35 and EX40 engines. Ideal for workshop repairs, field servicing, and scheduled overhauls where restoring exhaust flow and compression is required.
Also known as:
Engine exhaust valve, outlet valve, exhaust poppet valve, Subaru EX exhaust valve, Robin EX series exhaust valve, cylinder head exhaust valve.
Fits Models:
EE400DSM500, EX35, EX350D00030, EX350D20162, EX350D20171, EX350D20190, EX350D20210, EX350DS0030, EX350DS2042, EX350DS2050, EX350DS2080, EX40, EX400D00000, EX400D00010, EX400D00020, EX400D00030, EX400D00040, EX400D00041, EX400D00070, EX400D00080, EX400D20172, EX400D20181, EX400D20200, EX400D40010, EX400D50000, EX400D50010, EX400D50030, EX400D50040, EX400D50050, EX400D50100, EX400D52010, EX400D52050, EX400D52080, EX400D52130, EX400DE5010, EX400DE5011, EX400DS0030, EX400DS2062, EX400DS2090, EX400DS2110, EX400DS2130, EX400DS5010, EX400DS5030, EX400DS5040, EX400DS5050, EX400DS5210, EX400DS5220, EX400DS5230, EX400DS5240, EX400DS5250, EX400DS5280, EX400DS5322, EX400DS7020, EX400SE5010, EX400SE5011, EX400SE5020, EX400SE5030, EX400SE5041, EX400SE5220, EX400SE5221, EX400SE5250, PKX401T0360, RGH75053500, RGR75023020, RLE65053000, RLE65053010, RLE75053000, RLE75053500, RLE75053501, RLE75053510, RLE75053511
Alternate Part Numbers:
20B-33501-H3, 20B33501H3
Product Specifications
| L&S Part No. | RB20B 33501 H3 |
|---|---|
| Manufacturer | Robin/Subaru |
| OEM No. | 20B-33501-H3 |
| Unit of Sale | 1 |
| Applications | EE400DSM500, EX35, EX350D00030, EX350D20162, EX350D20171, EX350D20190, EX350D20210, EX350DS0030, EX350DS2042, EX350DS2050, EX350DS2080, EX40, EX400D00000, EX400D00010, EX400D00020, EX400D00030, EX400D00040, EX400D00041, EX400D00070, EX400D00080, EX400D20172, EX400D20181, EX400D20200, EX400D40010, EX400D50000, EX400D50010, EX400D50030, EX400D50040, EX400D50050, EX400D50100, EX400D52010, EX400D52050, EX400D52080, EX400D52130, EX400DE5010, EX400DE5011, EX400DS0030, EX400DS2062, EX400DS2090, EX400DS2110, EX400DS2130, EX400DS5010, EX400DS5030, EX400DS5040, EX400DS5050, EX400DS5210, EX400DS5220, EX400DS5230, EX400DS5240, EX400DS5250, EX400DS5280, EX400DS5322, EX400DS7020, EX400SE5010, EX400SE5011, EX400SE5020, EX400SE5030, EX400SE5041, EX400SE5220, EX400SE5221, EX400SE5250, PKX401T0360, RGH75053500, RGR75023020, RLE65053000, RLE65053010, RLE75053000, RLE75053500, RLE75053501, RLE75053510, RLE75053511 |
| Machine Type | Engines |
| Fits Brands | Robin |
| Fits Models | EX35 | EX40 |
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