SIERRA 18-7403-9 Piston Lift Ring Sterndrives

( Brand: Sierra ), ( Manufacturer Part Number: 18-7403-9 ), ( Part Type: Ring Piston Lift Sterndrive )

Review SIERRA Replacement Piston Lift O ring Omc Sterndrives

Introducing the Sierra 18-7403-9 909316 piston lift O-ring, a crucial component designed specifically for Omnicraft OMC sterndrives. This O-ring plays a vital role in ensuring the proper functionality of your sterndrive system.

The piston lift O-ring is a high-quality, precision-made elastomeric part, manufactured to meet the highest industry standards. Its primary function is to create a seal between the piston and the cylinder, preventing the escape of water and lubricant, while allowing the free movement of the piston during operation.

This O-ring features a cross-section design that is specifically engineered for the piston lift application in Omnicraft OMC sterndrives. It is made from a durable, high-performance elastomer material that provides excellent sealing capabilities, even under the most demanding conditions. The material offers excellent resistance to wear, tear, and compression set, ensuring a long service life.

The dimensions of the Sierra 18-7403-9 909316 piston lift O-ring are 1.8 inches (45.72 mm) in length, 0.74 inches (18.8 mm) in width, and 0.13 inches (3.3 mm) in thickness. These dimensions are essential to ensure a proper fit and function in the specific application.

Installing the piston lift O-ring is a straightforward process. It is recommended to replace the O-ring whenever you perform routine maintenance on your sterndrive, such as during a lower unit service or when you notice any leaks.

In conclusion, the Sierra 18-7403-9 909316 piston lift O-ring is an essential component for the proper functioning of your Omnicraft OMC sterndrive. Its high-quality design, excellent sealing capabilities, and durable material make it a reliable and long-lasting solution for your marine engine needs.

Pros and Cons of Buying a Sierra 18-7403-9 909316 Piston Lift O-Ring for OMC Sterndrives

The Sierra 18-7403-9 909316 piston lift o-ring is a crucial component for the proper functioning of OMC sterndrives. This part is essential for maintaining the watertight seal and ensuring the engine's efficiency. In this analysis, we will discuss the pros and cons of purchasing this particular o-ring.

1. High-quality material: The Sierra 18-7403-9 909316 piston lift o-ring is made from high-quality, durable, and resilient materials, ensuring a long service life.

2. Precise fit: This o-ring is designed specifically for OMC sterndrives, ensuring a precise fit and minimizing the risk of leaks.

3. Reliable seal: A good-quality o-ring like the Sierra 18-7403-9 909316 ensures a reliable seal, preventing water from entering the engine compartment.

4. Improved performance: A properly functioning piston lift o-ring can improve the overall performance of your OMC sterndrive by reducing water resistance and allowing the engine to run more efficiently.

1. Cost: The Sierra 18-7403-9 909316 piston lift o-ring may be more expensive compared to some aftermarket alternatives, which could be a deterrent for some buyers.

2. Availability: Depending on your location, you may have a harder time finding this specific o-ring in local stores, making it necessary to order it online.

3. Installation: Installing an o-ring like the Sierra 18-7403-9 909316 can be a time-consuming process, requiring some level of mechanical skill and the proper tools.

The Sierra 18-7403-9 909316 piston lift o-ring is an essential component for the proper functioning of OMC sterndrives. Its high-quality material, precise fit, and reliable seal make it a worthwhile investment for boat owners looking to maintain their engines and improve their performance. While the cost and availability may be concerns for some buyers, the long-term benefits and improved functionality make it a recommended purchase for those in need of a new piston lift o-ring for their OMC sterndrive.

Details:

Part number 18-7403-9. Condition: New. Brand: Sierra. Replaces OEM OMC 909316, 778116, Sierra O-Ring, Pack of 5, This o-ring is for sterndrives.

MPN: 18-7403-9. Related Part Numbers: 909316, 778116.

part #: 1874039 prices

• $14.95-$61.90

specifications otsterndriv:

• for makes: Omc
• brand: Sierra
• mpn: 18-7403-9
• part type: Ring Piston Lift Sterndrive

seller otsterndriv:

• rating: 99.1%
• city: Green Bay, Wisconsin
• # reviews: 27724

payments otsterndriv:

• credit card: Discover
• other
• wallet: Paypal

general otsterndriv:

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

offer otsterndriv:

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

returns otsterndriv:

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

shipping otsterndriv:

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

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