Description
Overview:
This Carburettor Insulator is a Genuine Robin/Subaru part for small petrol engines, specified as OEM No. 523-35052-01 and used on engines such as the Robin BE221. Made from a heat-resistant composite, it sits between the intake port and the carburettor to act as a thermal barrier. By limiting heat transfer from the cylinder to the carburettor body, it helps prevent fuel boil-off and vapour lock, supports stable mixture control, and promotes reliable starting and smooth running. It is particularly useful for maintaining older or vintage machines that rely on the BE221 platform, helping preserve original performance and drivability. Designed as a direct replacement part, it supports quick, accurate fitment on compatible Robin/Subaru equipment used across garden and light construction applications.
Key Features:
- Genuine Robin/Subaru component for assured compatibility and quality
- OEM match to 523-35052-01 for correct fit and port alignment
- Heat-insulating composite reduces heat soak into the carburettor
- Helps prevent vapour lock and hot-restart issues
- Supports stable idle, smoother throttle response, and consistent tuning
- Durable, fuel- and solvent-resistant material for long service life
- Accurate moulding with flat sealing faces to aid gasket integrity
- Direct replacement design for straightforward installation with basic tools
- Suitable for maintaining legacy/vintage engines to original specification
- Helps extend carburettor lifespan by reducing thermal stress
Typical Applications:
Used on Robin/Subaru small engines powering garden and light construction equipment. Typical examples include compact generators, water pumps, plate compactors, and handheld tools such as brushcutters and hedge trimmers that use compatible engines. Ideal for routine servicing, carburettor refits, and heat-related fault prevention on older machines where maintaining reliable hot and cold starting is essential.
Also known as:
Carburettor spacer, heat insulator, intake insulator, manifold spacer, carb spacer block, thermal isolator plate, inlet insulator block. These terms refer to the same function: placing a thermal barrier between the engine's intake and the carburettor to reduce heat transfer and protect fuel delivery consistency.
Fits Models:
BE221
Alternate Part Numbers:
RB523 35052 01
Product Specifications
| L&S Part No. | RB523 35052 01 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Robin/Subaru |
| OEM No. | 523-35052-01 |
| Unit of Sale | 1 |
| Machine Type | Engines |
| Fits Brands | Robin |
| Key Features | - Genuine Robin/Subaru part ensures compatibility and quality - OEM No. 523-35052-01 for correct fit and alignment - Heat-resistant composite reduces carburettor heat soak - Prevents vapour lock and hot-restart issues - Direct replacement for easy installation with basic tools |
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