fits make: Omc.

( Part Type: Seal Crankshaft ), ( Manufacturer Part Number: 309733 )
The OMC 309733 crankshaft seal is a crucial component in marine engines, specifically those manufactured by Outboard Marine Corporation. This seal is designed to prevent the ingress of water and other contaminants into the engine's crankcase, ensuring optimal engine performance and longevity.
The OMC 309733 crankshaft seal is a double-lip, compression-type seal made of high-quality materials. The outer lip is made of a flexible, reinforced rubber material that provides a tight seal against the crankshaft housing, while the inner lip is made of a more rigid material that seals against the crankshaft itself. This design ensures a leak-free seal, even under the extreme pressures and temperatures generated by marine engines.
The seal features a grooved design on its circumference, which allows for easy installation and removal. The grooves also help to distribute the pressure evenly across the seal, reducing the risk of damage or wear. The seal is also designed to be self-aligning, allowing for easy installation in engines with misaligned crankshafts.
The OMC 309733 crankshaft seal is specifically designed for use in OMC engines with a crankshaft diameter of 1.6 inches (40.64mm) and a crankshaft length of 3.5 inches (88.9mm). The seal measures 2.125 inches (53.98mm) in length and 0.375 inches (9.52mm) in width.
The OMC 309733 crankshaft seal is an essential replacement part for marine engines that have seen extensive use or have suffered damage to their existing seals. By preventing the intrusion of water and contaminants, this seal helps to maintain the engine's compression and reduce the risk of costly repairs or engine damage.
In summary, the OMC 309733 crankshaft seal is a high-quality, essential replacement part for marine engines. Its double-lip, compression design provides a tight, leak-free seal against water and contaminants, while its grooved design and self-aligning feature make installation easy and straightforward. With its precise dimensions and high-quality materials, this seal is a valuable investment for any marine engine owner looking to maintain optimal engine performance and longevity.
The OMC 309733 crankshaft seal is a crucial component for outboard marine engines. It prevents oil leaks and ensures the engine's proper functioning. While purchasing this part, it's essential to consider both its advantages and disadvantages.
Pros:1. Leak Prevention: The primary function of a crankshaft seal is to prevent oil leaks. By installing a new OMC 309733 crankshaft seal, you can guarantee that your outboard engine will no longer leak oil, which can save you from costly repairs and maintenance.
2. Enhanced Performance: A faulty crankshaft seal can negatively impact your engine's performance. By replacing it with a new seal, you can restore optimal engine performance and efficiency.
3. Extended Engine Life: A new crankshaft seal can help extend the life of your outboard engine by preventing oil leaks, which can lead to more significant issues if left unchecked.
4. Cost-Effective: While the upfront cost of purchasing an OMC 309733 crankshaft seal may seem high, it is often more cost-effective than dealing with the consequences of a leaking engine, such as damage to the engine or the need for more extensive repairs.
Cons:1. Upfront Cost: The price of an OMC 309733 crankshaft seal can be a significant investment, especially for boat owners on a tight budget.
2. Installation Complexity: Installing a crankshaft seal can be a complex process that requires specialized tools and knowledge. It may be best to have a professional mechanic perform the installation to ensure it is done correctly.
3. Potential for Future Leaks: Although a new crankshaft seal should prevent leaks, there is always a chance that it may not last as long as expected or that it could fail prematurely, leading to the need for future replacements.
Conclusion:The OMC 309733 crankshaft seal is an essential component for maintaining the proper functioning of your outboard marine engine. While its upfront cost and installation complexity are disadvantages, the benefits of leak prevention, enhanced performance, and extended engine life make it a worthwhile investment. If you are experiencing oil leaks or notice a decrease in engine performance, consider purchasing and installing a new OMC 309733 crankshaft seal to keep your engine running smoothly.
Recommendation:If you own an outboard marine engine and are experiencing oil leaks or notice a decrease in engine performance, it is recommended that you consider purchasing and installing a new OMC 309733 crankshaft seal. While the upfront cost and installation complexity may be disadvantages, the benefits of leak prevention, enhanced performance, and extended engine life make it a worthwhile investment. If you are not confident in your ability to install the seal yourself, consider hiring a professional mechanic to ensure it is done correctly.
This is a new old stock OMC Crankshaft Seal OEM Part # 309733.