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

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

This carburetor base gasket is designed for specific OMC and Volvo Penta sterndrive engines from 1986 to 1993, including the 3.0L (140–181 HP) and 4.3L V6 (262 CID) models equipped with Holley 2-barrel or DeMon carburetors.

It serves as a direct replacement for OMC part number 3853283, Volvo Penta part number 3853283, Sierra part number 18-0899, and GLM part number 30382, ensuring a precise fit and reliable seal between the carburetor and intake manifold.

• Installation Location: Mounts directly between the carburetor and the intake manifold.
• Material Composition: Manufactured from a high-quality composite/paper gasket material.
• Primary Function: Creates an airtight seal to prevent vacuum leaks and ensure proper engine performance.

Part Number Cross-Reference

Use this table to confirm equivalent part numbers across OEM and aftermarket brands.

Compatible Engine Models

Confirm your engine model/year in the table below.

Technical Specifications

Package Contents

• 1 x Carburetor Base Gasket (Replaces OEM P/N 3853283)

Installation Guide

1. Ensure the engine is completely cool and disconnect the battery's negative terminal for safety.
2. Shut off the fuel supply valve. Place a rag under the fuel inlet fitting to catch any spillage.
3. Carefully disconnect the fuel line, throttle linkage, and any choke or vacuum lines attached to the carburetor.
4. Remove the nuts and washers securing the carburetor to the intake manifold studs.
5. Lift the carburetor straight up and off the manifold. Be careful not to spill any remaining fuel.
6. Remove the old base gasket and discard it.
7. Thoroughly clean the mating surfaces of both the intake manifold and the carburetor base. Both surfaces must be free of old gasket material, sealant, and debris.
8. Place the new gasket over the intake manifold studs, ensuring it is correctly aligned.
9. Carefully lower the carburetor back onto the studs and over the new gasket.
10. Reinstall the mounting nuts and tighten them in a crisscross pattern to the manufacturer's specified torque. Do not overtighten.
11. Reconnect all fuel lines, linkages, and vacuum hoses. Open the fuel supply valve.
12. Reconnect the battery, start the engine, and carefully inspect for any fuel or vacuum leaks around the gasket.

Troubleshooting & FAQ

How do I confirm this gasket fits my engine?

Check the "Compatible Engine Models" table to verify your OMC or Volvo Penta model and year (1986–1993) are listed. This gasket is a direct replacement for OEM part number 3853283 and is used on engines with Holley 2-barrel or DeMon carburetors.

What are the signs of a failing carburetor base gasket?

Common symptoms include a rough or unstable idle, a hissing sound from the engine bay (indicating a vacuum leak), stalling, hesitation upon acceleration, and reduced fuel economy. A visual inspection may show cracks or brittleness in the old gasket.

Should I use sealant with this gasket?

No, this gasket is designed to be installed dry. Applying additional sealants can interfere with its ability to create a proper seal. Ensure both mating surfaces are perfectly clean and flat before installation for best results.

OEM vs. Aftermarket?

This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.

How fast do you ship and how much does it cost?

We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.

What is your warranty and return policy?

This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused & in original condition); please see our policy page or reach out for instructions.

Important Notes

• Verify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.
• This product is an aftermarket replacement part and is not an OEM component.
• Professional installation is recommended to ensure safety and optimal performance.

Why Choose JLM MARINE?

• Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
• Fast Global Shipping: Free delivery worldwide in 5–15 days.
• Direct from Manufacturer: Competitive pricing without compromising quality.