Description
Overview:
This Gasket Insulator is a genuine Robin/Subaru part for EX35 and EX40 petrol engines. It is a precision-cut sealing gasket made from fuel- and heat-resistant composite material, designed to sit between the intake insulator and its mating surfaces. Its job is to provide an airtight seal, preventing air leaks that can cause poor starting, rough idling, or loss of power. Built to OEM specification (OEM No. 20B-35901-H3), it ensures the correct thickness and hole alignment for reliable assembly and consistent torque. Suitable for construction and garden machinery powered by EX-series engines, it offers dependable performance for tradespeople, hire fleets, and DIY users carrying out routine servicing or repairs. As a Genuine Part, it supports long service life and stable operation under vibration and temperature changes.
Key Features:
- Genuine Robin/Subaru part for assured fit and compatibility (OEM No. 20B-35901-H3)
- Fuel- and heat-resistant composite material maintains a reliable, airtight seal
- Helps prevent vacuum and intake leaks, aiding easy starting and smooth idle
- Correct dimensions and port alignment for EX35 and EX40 engines
- Supports consistent engine tuning and performance under load and vibration
- Reduces risk of lean running and associated engine wear
- Simple to fit during carburettor or intake service with standard hand tools
- Ideal preventive replacement when refitting the insulator or carburettor
- Durable construction resists compression set and gasket creep over time
- Suitable for frequent-use machinery in tough site or garden conditions
Typical Applications:
Used on equipment powered by Robin/Subaru EX35 and EX40 engines, such as plate compactors, generators, water pumps, pressure washers, tillers, and other site and garden machines. Commonly fitted during carburettor, intake, or insulator maintenance to restore sealing integrity and improve running quality.
Also known as:
Carburettor insulator gasket, inlet manifold gasket, spacer gasket, intake insulator plate gasket, carb gasket, manifold-to-head intake gasket, intake sealing gasket.
Fits Models:
EX35, EX40
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