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Carburetor Repair Kit – Fits Volvo Penta/OMC 4.3L, 5.0L, 5.7L, 7.4L, 8.2L (Replaces 3854105, 987313)

Sale price $79.99 Regular price $127.00
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Carburetor Repair Kit – Fits Volvo Penta/OMC 4.3L, 5.0L, 5.7L, 7.4L, 8.2L (Replaces 3854105, 987313) is backordered and will ship as soon as it is back in stock.


Worry-free returns

You may return most new, unopened items within 7 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.

Delivery and Shipping

Free standard shipping on all orders under 1 KG

If you have any questions, feel free to email us at info@sierramarines.com, and we’ll get back to you within 20–36 hours.

Product Details

This Carburetor Repair Kit is designed for a range of Volvo Penta and OMC gasoline engines from 1993 to 1998, specifically including Volvo Penta 4.3L, 5.0L, 5.7L, 7.4L (Gi, GL, GSi), and 8.2L GSi models, as well as OMC 4.3L V6 through 8.2L V8 engines. It provides the necessary components for servicing Holley 4-barrel carburetors used on these marine engines.

It serves as a direct aftermarket replacement for several OEM and aftermarket part numbers, including Sierra 18-7242, Volvo Penta 3854105, OMC 987313/3854105, and others, ensuring a precise and reliable interchange.

  • Engineered for direct-fit installation.
  • Compatible with specific Holley 4-barrel carburetors.
  • Restores carburetor performance and prevents fuel leaks.

Part Number Matrix

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

Brand Part Number
Sierra 18-7242
GLM 13470
Mallory 9-37627
Holley R-80378A / R-80378-1A
Volvo Penta 3854105
OMC 987313 / 3854105
Mercury/MerCruiser 802519 / 879066

Engine & Model Compatibility

Confirm your engine model/year in the table below.

Fits various Volvo Penta Gi, GL, and GSi models from 1993–1998.

Fits various OMC V6 and V8 models from 1993–1998.

Brand Model Rated HP Stroke Years OEM Part No.
Volvo Penta 4.3L Gi, GL, GSi 164–205 4-Stroke 1993–1998 3854105
Volvo Penta 5.0L GL, GXi 190–220 4-Stroke 1993–1998 3854105
Volvo Penta 5.7L Gi, GXi, GSi 250–280 4-Stroke 1993–1998 3854105
Volvo Penta 7.4L Gi, GL, GSi 300–330 4-Stroke 1993–1998 3854105
Volvo Penta 8.2L GSi 385 4-Stroke 1993–1998 3854105
OMC 4.3L V6 175–190 4-Stroke 1993–1998 987313
OMC 5.0L V8 175–190 4-Stroke 1993–1998 987313
OMC 5.7L V8 250–260 4-Stroke 1993–1998 987313
OMC 7.4L V8 310–330 4-Stroke 1993–1998 987313
OMC 8.2L V8 385 4-Stroke 1993–1998 987313

Technical Specs

Product Type
Carburetor Repair Kit
Installation
Direct replacement
Fuel Type
Gasoline
Dimensions
15.8" L x 4.7" W x 17.7" H
Weight
Approx. 0.58 lbs (0.26 kg)
Warranty
Limited Lifetime (Sierra)
Other Technical Attributes
For Holley 4-barrel carburetors

What’s in the Box

  • Carburetor Gaskets and Components (Replaces 3854105)

Installation Notes

  1. Disconnect the boat's battery and relieve all fuel system pressure.
  2. Carefully detach fuel lines, throttle linkages, and any vacuum hoses connected to the carburetor. Note their positions for reassembly.
  3. Remove the mounting bolts and lift the carburetor off the intake manifold.
  4. Disassemble the carburetor on a clean workbench, organizing parts systematically.
  5. Thoroughly clean all metal components with a quality carburetor cleaner, ensuring all channels and jets are clear.
  6. Replace old gaskets, seals, and other wear items with the new parts from the kit.
  7. Reassemble the carburetor, following the reverse order of disassembly.
  8. Install the rebuilt carburetor back onto the engine, tightening bolts to the manufacturer's torque specifications.
  9. Reconnect all fuel lines, linkages, and hoses securely.
  10. Reconnect the battery, start the engine, and carefully inspect for any fuel leaks.
  11. Adjust the idle speed and air/fuel mixture screws as required for smooth operation.

Troubleshooting & FAQ

How do I know if my carburetor needs a rebuild?

Common signs include rough idling, engine stalling, hesitation upon acceleration, black smoke from the exhaust, reduced fuel economy, or visible fuel leaks from the carburetor body. If you experience these symptoms, a rebuild kit can often resolve them.

Is this kit compatible with all Holley carburetors?

No, this kit is specifically for Holley 4-barrel carburetors that were factory-installed on the listed Volvo Penta and OMC engine models from 1993 to 1998. Always verify your carburetor model and part number before ordering.

Do I need special tools to use this kit?

Basic hand tools like wrenches, screwdrivers, and pliers are required. A carburetor cleaner spray and a clean workspace are also essential. No highly specialized tools are typically needed for a standard rebuild.

What is the difference between an OEM and an aftermarket part?

This listing is an aftermarket replacement (not OEM). It is built to OEM-level specifications with comparable materials. Our parts are manufactured in an ISO 9002 facility and are batch-inspected for quality and consistency.

How fast is shipping and what does it cost?

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

What is the warranty and return policy?

Every part is covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact our support team with your order details. Returns are accepted within our standard window for unused parts in their original condition. Please see our policy page or reach out for instructions.

Safety & Important Info

  • Verify images and specifications against 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.

About Sea Sierra

  • Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
  • Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
  • Manufacturer-Direct Value — Fair pricing without compromising on materials or quality control.

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