SIERRA 18-7409-9 Ring Sterndrives

( Brand: Sierra ), ( Manufacturer Part Number: 18-7409-9 ), ( Part Type: Ring Sterndrive )

Review SIERRA Replacement O ring Omc Sterndrives fits COBRA

Introducing the Sierra 18-7409-9 911871 O-ring, a crucial component designed specifically for Omnicraft OMC Cobra Sterndrives. This O-ring, manufactured by Sierra, is an essential part of the sealing system that ensures a watertight connection between various components of your sterndrive.

The Sierra 18-7409-9 911871 O-ring is made from a high-performance, rubber material that offers excellent resistance to wear and tear, as well as to the harsh marine environment. Its cross-section shape is specifically engineered to provide an optimal seal, enhancing the overall efficiency and reliability of your sterndrive.

Measuring approximately 1.18 inches (300mm) in length and 0.12 inches (3mm) in width, this O-ring is precisely designed to fit in the specified application on your Omnicraft OMC Cobra Sterndrive. Its versatility and compatibility make it an ideal replacement option for worn-out or damaged O-rings.

Installing the Sierra 18-7409-9 911871 O-ring is a straightforward process. Simply remove the old O-ring, clean the surface, and then compress the new O-ring into place. Proper installation ensures a perfect seal and optimal performance of your sterndrive.

In conclusion, the Sierra 18-7409-9 911871 O-ring is an essential upgrade for your Omnicraft OMC Cobra Sterndrive. Its high-quality construction, precise dimensions, and excellent sealing properties make it an indispensable component for maintaining the efficiency and reliability of your marine engine.

Pros and Cons of Buying Sierra 18-7409-9 911871 O-Ring for OMC Cobra Sterndrives

The Sierra 18-7409-9 911871 o-ring is a critical component for the proper functioning of OMC Cobra sterndrives. This o-ring ensures the watertight seal between the drive and the boat, preventing water intrusion and maintaining the efficiency of the sterndrive. In this article, we will discuss the pros and cons of buying this specific o-ring for your OMC Cobra sterndrive.

1. Excellent Sealing Performance: The Sierra 18-7409-9 911871 o-ring is designed to provide an exceptional seal, preventing water from entering the sterndrive and the boat's interior.

2. Durability: These o-rings are made of high-quality materials that can withstand the harsh marine environment, ensuring long-lasting performance.

3. Availability: Sierra Marine is a well-known and reputable manufacturer, and their products are widely available. This means that you can easily purchase replacement o-rings when needed.

1. Cost: Compared to some aftermarket alternatives, the Sierra o-rings can be more expensive. However, their superior quality and durability may justify the additional cost.

2. Size and Fit: It is essential to ensure that you order the correct size and fit of the o-ring for your specific OMC Cobra sterndrive model. Incorrectly sized o-rings may not function properly or could even damage the drive.

In conclusion, the Sierra 18-7409-9 911871 o-ring is a valuable investment for maintaining the proper functioning and longevity of your OMC Cobra sterndrive. While it may cost more than some alternatives, its exceptional sealing performance, durability, and availability make it a worthwhile choice for boat owners.

When purchasing an o-ring for your OMC Cobra sterndrive, it is essential to ensure that you order the correct size and fit. We recommend checking the manufacturer's specifications or contacting the OMC or Sierra Marine customer support for assistance in selecting the appropriate o-ring for your specific application. Additionally, consider the long-term benefits of investing in a high-quality o-ring like the Sierra 18-7409-9 911871 to ensure optimal performance and minimal downtime for your boat.

Details:

Condition: New. Related Part Numbers: 911871. Brand: Sierra. Part number 18-7409-9.

MPN: 18-7409-9. Replaces OEM OMC 911871, Sierra O-Ring, Pack of 5, This o-ring is for some Sterndrives.

part #: 1874099 prices

• $13.95-$107.91

specifications otsterndriv:

• for models: Cobra
• for makes: Omc
• brand: Sierra
• mpn: 18-7409-9
• part type: Ring Sterndrive

returns otsterndriv:

• time: 30 Days
• policy: Returns Accepted
• paid by: Seller

shipping otsterndriv:

• type: Fixed
• class: Standard, Expedited
• carrier: USPS
• transit: 3-7 Days
• cost: $0.00
• service: Standard, USPS Priority Mail

payments otsterndriv:

• credit card: Mastercard
• other
• wallet: Google-pay

seller otsterndriv:

• rating: 99.1%
• city: Green Bay, Wisconsin
• # reviews: 27723

offer otsterndriv:

• options: Ship-to-home
• quantity: 1
• availability: In Stock
• best offers: True
• started: August 4, 2025
• sold: 0

general otsterndriv:

• Boat Parts > Sterndrive Motors Components > Other
• condition: New

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