OMC 385403 Outboard High Altitude Nozzle Kit Carburetor Jet Tube

( Part Type: Jet Nozzle Carburetor Tube ), ( Manufacturer Part Number: 385403 ), ( Country/region Of Manufacture: United States )

Review OMC Outboard Inch High Altitude Nozzle Kit Part #385403 Carburetor Jet Tube fits MARINE

The OMC 385403 Outboard Marine High Altitude Nozzle Kit is an essential upgrade for your carburetor jet tube, designed to enhance the performance of your outboard engine at high altitudes or in thin air conditions. This kit is specifically engineered for Mercury and Mariner outboard engines, offering a more efficient combustion process and improved fuel economy.

The high altitude nozzle kit includes four (4) high altitude nozzles, each meticulously crafted from durable, corrosion-resistant materials. These nozzles are designed to provide a finer fuel mist, ensuring complete vaporization and optimal air-fuel mixture for efficient combustion. The nozzles are also adjustable, enabling users to fine-tune the idle mixture for their specific engine and operating conditions.

The kit also features four (4) jet tubes, which have been engineered to provide a precise fit and seamless integration with your existing carburetor. These jet tubes are designed to facilitate the efficient flow of fuel to the engine, allowing for optimal performance in various operating conditions. The tubes are also constructed from high-quality materials, ensuring durability and resistance to corrosion.

Installing the OMC 385403 Outboard Marine High Altitude Nozzle Kit is a straightforward process, making it an ideal upgrade for both DIY enthusiasts and professional technicians. The kit includes detailed installation instructions, ensuring a hassle-free experience for users. Additionally, the nozzles and jet tubes are interchangeable with other OMC and Mercury Marine high altitude kits, offering flexibility for users who may need to upgrade multiple engines.

In summary, the OMC 385403 Outboard Marine High Altitude Nozzle Kit is a valuable investment for outboard engine enthusiasts seeking to optimize their engine's performance at high altitudes or in thin air conditions. This kit offers improved combustion efficiency, enhanced fuel economy, and easy installation, making it a must-have for anyone looking to get the most out of their outboard engine.

Outboard Marine High Altitude Nozzle Kit (OMC 385403) is designed to enhance the performance of your outboard engine by improving the combustion process at high altitudes. Here are some pros and cons of buying this kit:

1. Increased power: The high altitude nozzle kit helps to improve the combustion process, leading to an increase in power and torque. This can be particularly beneficial for those living or boating at high altitudes where the air is less dense.

2. Improved fuel efficiency: By optimizing the fuel-air mixture, the high altitude nozzle kit can help improve fuel efficiency, reducing your overall fuel consumption.

3. Better engine response: The improved combustion process can lead to better engine response, making your outboard engine more responsive and easier to maneuver.

4. Increased top end speed: The increased power and torque can lead to an increase in top end speed, making your boat faster and more exciting to operate.

1. Cost: The OMC 385403 high altitude nozzle kit can be quite expensive, especially when compared to other performance upgrades.

2. Installation: Installing the high altitude nozzle kit can be a complex process, requiring specialized tools and knowledge. It is recommended that the installation be done by a professional to ensure proper installation and to avoid any potential damage to the engine.

3. Compatibility: The high altitude nozzle kit may not be compatible with all outboard engine models, so it is important to check the compatibility before making a purchase.

The OMC 385403 high altitude nozzle kit offers several benefits for those living or boating at high altitudes, including increased power, improved fuel efficiency, better engine response, and increased top end speed. However, it comes with a high cost, a complex installation process, and potential compatibility issues. Ultimately, if you are looking for a significant performance upgrade for your outboard engine and are willing to invest the time and money, the high altitude nozzle kit could be a worthwhile investment. Otherwise, it may be worth considering other, less expensive performance upgrades or waiting until you are at a lower altitude before operating your boat.

Details:

A rare find for vintage OMC engine restorers or collectors. These precision-drilled aluminum nozzles are designed for OMC carburetors, helping optimize fuel/air mix at high altitude. The original instruction sheet dated 9/71 outlines proper installation see photos. Please cross reference part #385403 to ensure compatibility.

part #: 385403 prices

• $17.95-$29.95

specifications vesselveep:

• for models: Marine
• for makes: Omc
• part type: Jet Nozzle Carburetor Tube
• manufacturer part number: 385403
• country/region of manufacture: United States

general vesselveep:

• condition: New other see details
• Parts Accessories > Boat Parts > Other

payments vesselveep:

• credit card: Visa
• other
• wallet: Paypal

returns vesselveep:

• policy: No Returns

offer vesselveep:

• best offers: True
• quantity: 3
• sold: 0
• options: Ship-to-home
• availability: In Stock
• started: June 29, 2025

shipping vesselveep:

• class: Standard
• cost: $5.50
• type: Calculated
• transit: 6-13 Days
• service: USPS Ground Advantage
• carrier: USPS

seller vesselveep:

• rating: 0.0%
• # reviews: 48
• city: Clancy, Montana

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