Easy
30-60 minutes
This is an authentic OEM sourced replacement part used on a variety of Subaru/Robin engines. This part provides an air tight seal between a carburetor and an insulator. This part is made out of composite material and it is sold individually.
You would need a wrench to complete a repair.
Gasket2(insulator) 20A-35903-03
OEM part for: Subaru / Robin
Part Number: 20A-35903-03
$4.99
In Stock
Ships within 1 business day 
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Product Description ?
- Classification: Part
- Weight: 0.01 lbs.
- Shipping: Ships Worldwide
Frequently Purchased Together ?
Compatibility
This Gasket2(insulator) will fit the following 762 machines. Confirm this part works with your model, and view the detailed model diagrams and repair help we have to offer.
Displaying 20 of 762 matching models.
Subaru / Robin
Show More Compatible Models762 total model matches. Try the above search to narrow your results.
This is the official OEM part for the following brands:
- Subaru / Robin
This item works with the following types of products:
- Engine
This part replaces obsolete part #: 277-35903-J3
Questions & Answers ?
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Customer Repair Instructions ?
All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part.
The carburetor had the wrong gaskets on it causing it to suck air and lose power at full throttle
Nicholas - October 30, 2020
Tool Type
Engine
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Socket set, Gasket scraper
Removed the 2 nuts and one bolt using a 10mm socket from the air cleaner, slide the housing off
2.remove carburetor
3. Remove insulator
4. Peal off and use gasket scraper to clean up any old gasket material stuck to engine; insulator; carburetor; and air cleaner housing
5.install insulator gasket, insulator, carburetor gasket, carburetor, air cleaner gasket, and air cleaner housing; put the 2 nuts and 1 bolt to secure everything back down properly
2.remove carburetor
3. Remove insulator
4. Peal off and use gasket scraper to clean up any old gasket material stuck to engine; insulator; carburetor; and air cleaner housing
5.install insulator gasket, insulator, carburetor gasket, carburetor, air cleaner gasket, and air cleaner housing; put the 2 nuts and 1 bolt to secure everything back down properly
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Gas was leaking out of my Robin carburetor on my Subaru engine on my Rigid Pressure Washer.
Norman - July 31, 2020
Tool Type
Engine
Difficulty
Medium
Time
30-60 minutes
Tools Used
Screwdriver, Pliers, Socket set, Wrench Set, Nutdriver
1. Drained the fuel tank
2. Removed air cleaner assembly
3. Removed carburetor assembly and fuel line
4. Replaced muffler and associated parts
5. Replaced gaskets and o-rings in carburetor and started reassembly
2. Removed air cleaner assembly
3. Removed carburetor assembly and fuel line
4. Replaced muffler and associated parts
5. Replaced gaskets and o-rings in carburetor and started reassembly
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Bad carburetor
Vince - July 9, 2020
Tool Type
Engine
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Pliers, Socket set, Wrench Set
Replaced the mounting gaskets, carburetor, filter and cover for filter.
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Would not run!
Richard - June 3, 2020
Tool Type
Engine
Difficulty
Easy
Time
30-60 minutes
Tools Used
Screwdriver, Socket set, Wrench Set
Pulled carburetor off. Soaked in carburetor cleaner overnight. Pulled all jets out and cleaned them. Oxygen and Acetylene Tip Cleaning tool used to make sure all jets were clean. Replaced the needle valve. Installed new gaskets. Runs!
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Carb bowl leaking fuel
William - April 24, 2020
Tool Type
Engine
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Screwdriver, Socket set
Removed carb bowl
Installed new gasket
Reinstalled bowl
Installed new gasket
Reinstalled bowl
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Carburator
Kregg - July 26, 2019
Tool Type
Engine
Difficulty
Easy
Time
15-30 minutes
Tools Used
Pliers, Wrench Set
Put new carb on and started right up easy job
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Carburator needed cleaning and also new gaskets
Peter - April 16, 2019
Tool Type
Engine
Difficulty
Medium
Time
30-60 minutes
Tools Used
Screwdriver, Pliers, Wrench Set, Nutdriver
Followed instructions on YouTube video.
The parts which I ordered were real OEM parts which ensured a correct fit e.g. for the gaskets.
I once did order a new carburator (Chinese knock-off) from the Big River "A" online but the gaskets did not fit. Had to send it back.
But using OEM parts on the original carburator was the better choice.
The parts which I ordered were real OEM parts which ensured a correct fit e.g. for the gaskets.
I once did order a new carburator (Chinese knock-off) from the Big River "A" online but the gaskets did not fit. Had to send it back.
But using OEM parts on the original carburator was the better choice.
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lpressure washer rope broke
Robert - March 9, 2019
Tool Type
Engine
Difficulty
Medium
Time
30-60 minutes
Tools Used
Socket set, Wrench Set
Exactly how you stated here before it cliked and disapered
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Surging engine speeds & no power
David - September 1, 2018
Tool Type
Engine
Difficulty
Medium
Time
30-60 minutes
Tools Used
Screwdriver, Wrench Set, Needle nose pliers
Removed carburetor air filter & mounting assembly
Removed carburetor from engine
Disassembled carburetor- removed old bowl gasket, needle valve, removed & soaked two air jets in carb cleaner and carefully dipped carburetor into carb cleaning solution (making sure NOT to dip plastic carburetor parts into the cleaning solution)
Reassembled carburetor with new parts & cleaned air jets
Remounted carburetor to engine
Remounted air cleaner mounting
Installed new element & old cover
Removed carburetor from engine
Disassembled carburetor- removed old bowl gasket, needle valve, removed & soaked two air jets in carb cleaner and carefully dipped carburetor into carb cleaning solution (making sure NOT to dip plastic carburetor parts into the cleaning solution)
Reassembled carburetor with new parts & cleaned air jets
Remounted carburetor to engine
Remounted air cleaner mounting
Installed new element & old cover
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Old gas in carb and tank
Lawrence - August 19, 2018
Tool Type
Engine
Difficulty
Medium
Time
1-2 hours
Tools Used
Screwdriver, Pliers, Socket set, Wrench Set, Nutdriver, Adjustable Wrench
1. Removed carburetor
2. Disassembled carburetor and cleaned parts
3. Replaced gaskets and reattached carburetor
4. Cleaned gas tank after draining old gas out
5. Added new gas and it started right up
6. Ran engine with gas shut off till it stopped
2. Disassembled carburetor and cleaned parts
3. Replaced gaskets and reattached carburetor
4. Cleaned gas tank after draining old gas out
5. Added new gas and it started right up
6. Ran engine with gas shut off till it stopped
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All our part reviews are solicited directly from other customers who have purchased this exact part. While we moderate these reviews for profanity, offensive language or personally identifiable information, these reviews are posted exactly as submitted and no alterations are made by our team.
All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part. While we moderate these reviews for profanity, offensive language or personally identifiable information, these reviews are posted exactly as submitted and no alterations are made by our team.
Based on data from past customer purchasing behaviors, these parts are most commonly purchased together along with the part you are viewing. These parts may be necessary or helpful to replace to complete your current repair.
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