Easy
30-60 minutes
This is a Genuine Manufacturer 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.
Insulator Gasket 20A-35902-03
OEM part for: Subaru / Robin
Part Number: 20A-35902-03
$4.99
In Stock
Ships within 1 business day 
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Compatibility
This Insulator Gasket will fit the following 760 machines. Confirm this part works with your model, and view the detailed model diagrams and repair help we have to offer.
Subaru / Robin
Show More Compatible ModelsThis item works with the following types of products:
- Engine Parts
This part replaces obsolete part #: 277-35902-J3, 277-35902-H3
Customer Part Reviews ?
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Coleman generator
Generator would not start. When I began my search I identified the generator with the model number, two carb gaskets came up immediately. I ordered one of each, installed them and it ran great. Took about a week to receive parts in December.
Guest -
December 15, 2022
Verified Purchase
Fast service perfect!
Parts was OEM no issues everything was as described
Guest -
September 6, 2022
Verified Purchase
Great Customer Service
I've not had time to replace the carburetor yet, but the customer service and shipping is awesome. It was well packed, arrived quickly, and was in great shape. I'll definitely use them again!
Guest -
March 11, 2021
Verified Purchase
Not Exact
Gasket was as close to the original as compared to others I purchased.
It took 11 BUSINESS days to arrive. Had I known that I would of looked elsewhere or used one that was close.
Guest -
July 17, 2019
Verified Purchase
eReplacementParts Team
Hi Mark,
Thank you for your review. Please accept our apologies that the part did not arrive when you expected it. Economy shipping is our slowest option and because of the holiday, it was likely delayed in shipping out to you. If there is anything that we can do for you in the future, or if you have any questions or concerns, please do not hesitate to ask.
Old school
It felt like I was back in the catalog ordering days. It took forever to have my items shipped. 10 days or so before shipping... and then the time to ship. Definitely not the experience most customers expect these days. Not thrilled about it.
Nathan -
July 6, 2019
Verified Purchase
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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.
Carb had dried up gasoline in it. Parts needed for overhaul
Mike - February 3, 2021
Tool Type
Engine
Difficulty
Easy
Time
15-30 minutes
Tools Used
Screwdriver, Socket set
Disassemble, soak carb in solvent , reassemble. Start snowthrower cold. Ran good. Return to customer
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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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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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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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Carburator leaking gas between carb and engine.
Alton - May 10, 2018
Tool Type
Engine
Difficulty
Easy
Time
30-60 minutes
Tools Used
Screwdriver, Pliers, Nutdriver
Replaced with new insulator and gasket. Solved the problem. Good fast service. Completely satisfied.
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Our customer service team are at the ready daily to answer your part and product questions. We have a dedicated staff with decades of collective experience in helping customers just like you purchase parts to repair their products.
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.
All our installation videos are created and produced in collaboration with our in-house repair technician, Mark Sodja, who has helped millions of eReplacementParts customers over the last 13 years repair their products. Mark has years of experience in selling and repairing both commercial and residential products with a specialty in gas-powered equipment.
This data is collected from customers who submitted a repair instruction after replacing this exact part. Customers can rate how easy the repair was to complete and how long it took. We aggregate this data to provide a repair rating that allows customers to quickly determine the difficulty and time needed to perform their own repair.
