Carburetor Kit with Float – Fits Johnson/Evinrude 120-300 HP

$24.99 $39.00

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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.).

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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 Kit with Float is designed for a wide range of Johnson/Evinrude V4 and V6 2-stroke outboard engines from 120 HP to 300 HP, manufactured between 1985 and 2001. It provides all the necessary components to rebuild your carburetor and restore engine performance.

It serves as a direct interchange for numerous OMC part numbers, including 435752, 439078, 439079, 434647, 435676, 435677, 396676, 435678, 398174, 398557, 398558, 434399, and 434439.

Engineered for direct-fit installation in compatible carburetor assemblies.
Includes modern, ethanol-resistant Viton gaskets for improved durability and fuel compatibility.
Restores fuel delivery and engine efficiency for gasoline-powered outboards.

Part Number Matrix

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

Brand	Part Number
OMC	435752
OMC	439078
OMC	439079
OMC	434647
OMC	435676
OMC	435677
OMC	396676
OMC	435678
OMC	398174
OMC	398557
OMC	398558
OMC	434399
OMC	434439

Engine & Model Compatibility

Confirm your engine model/year in the table below.

For Johnson/Evinrude outboards:

Brand	Model	Rated HP	Stroke	Years	OEM Part No.
Johnson/Evinrude	V4, V6	120	2-Stroke	1985–1994	435752, 439078
Johnson/Evinrude	V4, V6	125	2-Stroke	1989–1998	435752, 439078
Johnson/Evinrude	V4, V6	130	2-Stroke	1995–2000	435752, 439078
Johnson/Evinrude	V4, V6	135	2-Stroke	2001	435752, 439078
Johnson/Evinrude	V4, V6	140	2-Stroke	1985–1994	435752, 439078
Johnson/Evinrude	V4, V6	185	2-Stroke	1989–1994	435752, 439078
Johnson/Evinrude	V4, V6	200	2-Stroke	1986–2001	435752, 439078
Johnson/Evinrude	V4, V6	225	2-Stroke	1986–2001	435752, 439078
Johnson/Evinrude	V4, V6	250	2-Stroke	1991–2001	435752, 439078
Johnson/Evinrude	V4, V6	275	2-Stroke	1985–1988	435752, 439078
Johnson/Evinrude	V4, V6	300	2-Stroke	1985–1995	435752, 439078

Technical Specs

Product Type: Carburetor Repair Kit with Float
Installation: Direct fit
Fuel Type: Gasoline
Dimensions: 7.0" H x 6.38" W x 1.63" L
Special Feature: Contains Viton gaskets for improved durability

What’s in the Box

1 x Float
Viton Gaskets
Kit includes components equivalent to OE part numbers: 391508, 326830, 338813, 327223, 332253, 396522, 603145, 336842, 305739

Installation Notes

Disconnect the battery and safely detach the fuel lines, preventing any fuel spillage.
Carefully remove the carburetor assembly from the engine manifold.
Disassemble the carburetor on a clean workbench, taking photos or notes to track the placement of each component.
Thoroughly clean all metal parts with a quality carburetor cleaner spray, removing all gum, varnish, and deposits.
Inspect all components for wear or damage and replace the old gaskets, seals, and float with the new parts from this kit.
Reassemble the carburetor, ensuring all parts are correctly seated and all screws are tightened to the proper torque.
Reinstall the carburetor onto the engine, making sure the mounting gasket creates a perfect seal.
Reconnect the fuel lines and battery terminals.
Start the engine and perform necessary idle speed and mixture adjustments according to your engine's service manual.

Troubleshooting & FAQ

How do I know if this carburetor kit fits my engine?

First, check the compatibility table on this page, which lists applicable Johnson/Evinrude models, horsepower ratings, and year ranges. Second, cross-reference your existing OEM part number with the numbers listed in our Part Number Matrix to ensure an exact match.

What are common carburetor problems that this kit can solve?

This kit is designed to fix issues related to old or degraded seals, such as fuel leaks, poor idling, engine stalling, hesitation on acceleration, and hard starts. Replacing worn components can restore proper fuel and air mixture.

What is the advantage of using Viton gaskets?

Viton gaskets offer superior resistance to modern ethanol-blended fuels compared to traditional nitrile rubber. This prevents them from swelling, cracking, or degrading over time, ensuring a reliable, long-lasting seal and preventing fuel leaks.

How often should a carburetor be rebuilt?

For marine engines, it's good practice to inspect carburetor components annually. A full rebuild is recommended every 3-5 years, or sooner if you frequently use ethanol-blended fuels or notice performance degradation.

Is this an OEM part?

This listing is for a high-quality aftermarket replacement part, not an OEM component. It has been engineered to meet or exceed OEM specifications using comparable materials and is manufactured in an ISO 9002 certified facility with rigorous batch-inspections for quality assurance.

What are the shipping options and costs?

We ship worldwide quickly, with a typical transit time of 5–15 days for most regions. Standard shipping is free. If available for your location, expedited shipping options and their costs will be presented at checkout.

What is the warranty and return policy?

This product is covered by a 1-year warranty against manufacturing defects under normal marine use. If you encounter any issues, please contact our support team with your order details. Returns are accepted within our standard window for unused items in their original packaging. See our full policy page or contact us for instructions.

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.

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 QC.

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