Mercury OEM Carburetor Gasket 835383001 | 8 HP & 9.9 HP 209cc FourStroke Outboard
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Mercury OEM Carburetor Gasket — Part No. 835383001 / 27-835383001
| Part Number | 835383001 / 27-835383001 |
|---|---|
| Brand | Mercury Marine |
| Official Description | Gasket, Carburetor |
| System | Carburetor / Intake Assembly |
| Engine Displacement | 209 cc |
| Quantity Required | 2 per applicable carburetor / intake assembly |
| Sold As | Individually — order 2 per service |
| UPC / GTIN | 745061624344 |
About This Part
The 835383001 / 27-835383001 is a genuine Mercury Marine OEM carburetor gasket for selected small Mercury FourStroke outboards. It seals the carburetor connection in the intake assembly, preventing air and fuel-mixture leaks that can cause lean running, rough idle, or hard starting. On the documented 209 cc intake-manifold assembly, two 835383001 gaskets are required — one on each side of the carburetor insulator. Confirm the quantity in your specific diagram before ordering.
Compatible Applications
Confirm the engine model and serial number before ordering. Documented applications include selected:
- Mercury 8 HP FourStroke — 209 cc (Serial 0P325500 & Up)
- Mercury 9.9 HP FourStroke — 209 cc (Serial 0P325500 & Up)
- Mercury 8 HP FourStroke — 209 cc (Serial 0R042475 & Up)
- Mercury 9.9 HP FourStroke — 209 cc (Serial 0R042475 & Up)
Mercury used multiple carburetor and intake configurations across 8 HP and 9.9 HP four-stroke models — verify against your engine serial number and carburetor/intake-manifold diagram before ordering.
When to Replace
- Any time the carburetor is removed — gaskets should not be reused once compressed
- The intake insulator is being serviced or replaced
- Gasket is torn, crushed, hardened, or fuel-damaged on inspection
- An intake air leak is suspected — symptoms include lean running, rough idle, or erratic RPM
- The carburetor or intake assembly is being rebuilt or cleaned
Installation Notes
- Replace both 835383001 gaskets whenever the carburetor is removed — reusing a compressed gasket risks an unreliable seal
- Clean the carburetor and insulator mating surfaces completely and remove all traces of old gasket material
- Inspect insulator 853526001 for cracking or heat distortion — replace if damaged
- Keep gasket openings aligned with the carburetor bore and intake passages during assembly
- Confirm the number of gaskets shown in your specific parts diagram before reinstalling
- Follow the applicable Mercury service manual for carburetor installation and fastener torque sequence
Related Components
The following parts are used in the same carburetor / intake-manifold assembly on applicable 8 HP and 9.9 HP 209 cc engines:
- 853526001 — carburetor insulator (installs between the two 835383001 gaskets)
- 835385T01 — intake manifold
- 835386001 — air box
- 825057003 — O-ring (same assembly)
Technical FAQ
How many gaskets do I need?
Typically two per assembly on the documented 209 cc configuration — one gasket sits on each side of the carburetor insulator. Check the diagram for your specific engine to confirm the quantity before ordering.
Can I reuse the old gasket?
No. Carburetor gaskets compress during installation and will not reliably reseal after removal. Always install fresh gaskets when the carburetor is reassembled.
What are the symptoms of a leaking carburetor gasket?
A leaking gasket allows unmetered air into the intake, causing the engine to run lean. Typical symptoms include rough or erratic idle, hesitation under load, hard starting, and lean-related performance problems. If the engine runs better at higher RPM than at idle, an intake air leak is worth investigating.
Parts Desk Insights
The most common oversight with this gasket is ordering only one when the assembly takes two. On the standard 209 cc 8 HP and 9.9 HP setup, there is a gasket on each side of the insulator — check the diagram and count the items before you order. We also see customers reusing the old gasket after a carb clean to save a few dollars, then chasing a lean idle that turns out to be the gasket not sealing. It is a low-cost part — replace both while the carburetor is already off the engine.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 1-3 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.