Description
Overview:
This Cylinder Head is a genuine Robin/Subaru replacement part for the EX21 petrol engine. Cast from heat-dissipating aluminium alloy and precision machined, it forms the upper part of the combustion chamber, supports the inlet and exhaust valves, and provides the sealing surface for the head gasket and spark plug. Built to handle sustained heat and pressure cycles, it helps restore compression, smooth running, and fuel efficiency on EX21-powered equipment used in construction and garden settings. Supplied as an OEM component for assured fit and function, it is suitable for routine overhaul or repair when the original head is cracked, warped, or excessively worn. Genuine Part, OEM No. RB278 13001 01.
Key Features:
- Genuine Robin/Subaru part for the EX21 engine (OEM RB278 13001 01)
- Aluminium alloy casting for strength with efficient heat dissipation
- Precision machined valve and gasket surfaces to help maintain compression
- Designed to withstand high temperatures, pressure, and vibration
- Direct-fit replacement to simplify installation and reduce downtime
- Restores engine performance, emissions stability, and reliability
- Compatible with standard EX21 valve gear, spark plug, and gasket set
- Corrosion-resistant finish suitable for outdoor and site use
- Supports correct oil and coolant-free combustion chamber sealing (air-cooled engine)
- Manufactured to original tolerances for long service life
Typical Applications:
Used on Robin/Subaru EX21 engines fitted to equipment such as generators, water pumps, pressure washers, plate compactors, cement mixers, chippers/shredders, lawn and turf machines, and light construction tools. Suitable for repairs after overheating, head damage, valve seat wear, or loss of compression.
Also known as:
EX21 head assembly, EX21 cylinder head casting, Robin Subaru head, engine top end (EX21), valve housing/head for EX21, Subaru-Robin 211 cc cylinder head.
Fits Models:
EX21
Product Specifications
| L&S Part No. | RB278 13001 01 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Robin/Subaru |
| OEM No. | 278 13001 01 |
| Unit of Sale | 1 |
| Machine Type | Engines |
| Fits Brands | Robin |
| Key Features | - Genuine Robin/Subaru part for EX21 engine (OEM RB278 13001 01) - Aluminium alloy casting for strength and heat dissipation - Precision machined surfaces maintain compression - Direct-fit replacement simplifies installation - Compatible with standard EX21 valve gear and gasket set |
| Fits Models | EX21 |
Reviews
Ask a Question
Compatibility
Customers also bought
-
![]()
Key Steel (Imperial) Length: 12" Assorted Pack of 20£83.17 £69.31 -
![]()
Flat Bar, Sizes: 20 x 3-6mm - Assorted Pack of 10£83.68 £69.73
Related Products
-
![]()
Key Steel (Imperial) Length: 12" Assorted Pack of 20£83.17 £69.31 -
![]()
Flat Bar, Sizes: 20 x 3-6mm - Assorted Pack of 10£83.68 £69.73
