Carburetor Base Gasket – Fits OMC/Volvo Penta 3.0L, 4.3L (Replaces 3853283)

$13.99

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Carburetor Base Gasket – Fits OMC/Volvo Penta 3.0L, 4.3L (Replaces 3853283) is backordered and will ship as soon as it is back in stock.

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Product Details

This high-quality Carburetor Base Gasket creates a crucial seal between the carburetor and intake manifold on OMC and Volvo Penta 3.0L (140 HP) and 4.3L V6 engines manufactured between 1986–1993. It is engineered to prevent vacuum leaks and ensure proper fuel/air mixture for reliable engine performance.

It serves as a direct cross-reference for OEM part numbers OMC 3853283 and Volvo Penta 3853283, and aftermarket equivalents including Sierra 18-0899 and GLM 30382.

Installs directly between the carburetor base and the engine's intake manifold.
Constructed from durable composite/paper gasket material to withstand engine heat and fuel exposure.
Primarily specified for use with Holley 2-barrel marine carburetors on listed engine models.

Part Number Matrix

Use this matrix to confirm equivalent references across OEM and aftermarket brands.

Brand	Part Number
OMC	3853283
Volvo Penta	3853283
Sierra	18-0899
GLM	30382

Engine & Model Compatibility

Confirm your engine model and year in the table below to ensure accurate fitment.

For OMC Engines: This gasket is primarily for 3.0L and 4.3L models from 1986–1993 using Holley or DeMon carburetors as specified.

For Volvo Penta Engines: Fits various 3.0L and 4.3L models from the same era, typically equipped with Holley or DeMon 2-barrel carburetors. Verify your specific model against the chart.

Brand	Model	Rated HP	Stroke	Years	OEM Part No.	Notes
OMC	3.0GL, 3.0GS	140	4-Stroke	1986–1993	3853283	With Holley 2 barrel carburetors
OMC	4.3GL-P, 4.3GL-J, 4.3GL-JF	175	4-Stroke	1986–1993	3853283	With DeMon carburetors
Volvo Penta	3.0GL, 3.0GS	140	4-Stroke	1986–1993	3853283	Various models with Holley 2 barrel carbs
Volvo Penta	4.3GL, 4.3GS	175–205	4-Stroke	1986–1993	3853283	Various models with DeMon carburetors

Technical Specs

Product Type: Carburetor Base Gasket
Installation: Mounts between carburetor and intake manifold
Fuel Type: Gasoline
Connection: Mounting gasket (non-fluid connection)
Housing Material: Composite/Paper
Housing Color: Tan/Brown
Fitting Type: Flat Gasket
Other Technical Attributes: Used with Holley 2-barrel marine carburetors

What’s in the Box

1 x Carburetor Base Gasket (3853283)

Installation Notes

Ensure the engine is cool. Disconnect the negative battery terminal for safety.
Relieve any pressure in the fuel system according to your service manual's procedure.
Remove the flame arrestor/air cleaner assembly from the top of the carburetor.
Carefully disconnect fuel lines, choke linkages, and throttle cables. Label them to simplify reconnection.
Unscrew the mounting bolts holding the carburetor to the intake manifold.
Lift the carburetor off and away. Remove and discard the old base gasket.
Thoroughly clean both the bottom mounting surface of the carburetor and the top surface of the intake manifold. Ensure they are free of old gasket material, grease, and debris.
Position the new gasket onto the intake manifold, aligning it with the mounting studs.
Carefully place the carburetor back onto the new gasket.
Tighten the mounting bolts in a crisscross pattern to the torque specified in your service manual. Do not overtighten.
Reconnect all fuel lines, linkages, and cables. Reinstall the flame arrestor.
Reconnect the battery. Prime the fuel system and check carefully for any fuel or vacuum leaks before starting the engine.

Troubleshooting & FAQ

How do I know if my carburetor base gasket is failing?

Common signs of a failed base gasket include a noticeable vacuum leak, which can cause a rough, unstable, or high idle. You might also hear a hissing or whistling sound from the engine bay, experience stalling, or notice hesitation during acceleration. A visual inspection may show the old gasket is cracked, brittle, or compressed.

Is any sealant required when installing this gasket?

Generally, this type of composite gasket is designed to be installed dry. Applying sealants can sometimes cause the gasket to swell, split, or slide out of position during installation, leading to leaks. Always follow the specific instructions in your engine's official service manual.

The fitment chart lists Holley and DeMon carburetors. Will this gasket fit both?

This gasket is specified as a direct replacement for applications using Holley 2-barrel carburetors. While some DeMon carburetors may share the same mounting pattern, it is critical to compare the new gasket against your old part to confirm a perfect match, as intake manifolds and carburetor bases can vary.

What are the risks of using a worn-out or incorrect gasket?

A faulty or incorrect gasket can lead to significant engine problems. A vacuum leak will disrupt the air-fuel ratio, causing poor performance and potential damage. A fuel leak at the carburetor base creates a serious fire hazard. Always confirm part compatibility before installation.

OEM vs. Aftermarket?

This listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.

Shipping speed & cost

We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.

Warranty & returns

Covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused & in original condition). See our policy page or reach out for instructions.

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Safety & Important Info

Verify images/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.
This is an aftermarket replacement, not an OEM component.
Professional installation is recommended for safety and performance.

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