The Cowl Support Bracket Plug from Buckshot Racing #77 is a vital component in the cowling assembly of Mercury Racing outboard engines, ensuring the stability of lightweight race cowls in high-performance marine racing.
 
Originally supplied by Mercury as part numbers 22-821881 (Mercury Racing), 22821881 (Mercury Marine), and 821881 (Quicksilver) in Stainless Steel. these interchangeable plugs are no longer available from Mercury, with the last known MSRP price was $53.74.
 
Buckshot Racing #77 has developed a precision-engineered replacement, fully compatible with these legacy part numbers and designed for Mercury Racing engines, including the S3000, Formula One motor, SST120, SST140, and adapted Pro Max models used in US Formula One and F1 H2O racing circuits.
 
This Mercury Racing cowl plug replacement ensures continued performance for outboard engine cowl support in competitive environments.
 
Crafted from 6061 billet aluminum, the Buckshot Racing #77 cowl support bracket plug is precision CNC machined to meet exact tolerances, guaranteeing a secure fit in the engine block of Mercury Racing outboards.
 
This specialized and unique 1/2 NPT Pipe Plug features a 5/16-inch threaded hole, approximately 1 inch deep, which accepts a bolt to anchor the cowl support bracket, a critical function for maintaining the structural integrity of lightweight race cowls.
 
Additionally, the plug seals a water passage at the top of the engine block, preventing water ingress that could cause corrosion or impair performance in harsh marine conditions.
 
Anodized in black, blue, or red finishes, the 22-821881-compatible plug offers enhanced corrosion resistance and durability, making it ideal for S3000 replacement parts and Formula One racing components.
 
The 6061 billet aluminum construction ensures the Buckshot Racing #77 plug, interchangeable with Mercury Marine 22821881, is lightweight yet robust, aligning with the performance demands of high-speed racing where weight optimization is crucial.
 
Designed to match the functionality of the original Quicksilver 821881 and Mercury Racing 22-821881 plugs, the #77 plug integrates seamlessly with cowl support brackets on S3000, SST120, SST140, and adapted Pro Max engines, supporting the rigorous requirements of US Formula One and F1 H2O racing circuits.
 
Installation of the Buckshot Racing #77 plug involves inserting it into the engine block’s water passage to create a watertight seal, then threading a 5/16-inch bolt into the plug to secure the cowl support bracket. This setup prevents cowl misalignment and mitigates vibration-induced wear, preserving the performance of lightweight race cowls found in Mercury Racing engines.
 
Regular inspection is recommended to ensure the seal and thread integrity of this Mercury Racing cowl plug, given the intense vibrations and environmental stresses of racing. The precision machining of the #77 plug facilitates straightforward installation, making it a reliable solution for high-performance outboard engine parts.
 
By combining high-quality materials, precision manufacturing, and full interchangeability with legacy Mercury part numbers, this replacement plug ensures the reliability and performance of lightweight race cowls in competitive marine applications.
 
This plug is a robust solution for maintaining the legacy of Mercury Racing’s high-performance outboard engines, supporting Carb 245HP, 260 ROS, 300 Drag, S3000, SST120, SST140, and Pro Max engines in Formula One racing components.
 
For technical support contact Mike Hill at mike@buckshotracing77.com or call +1-714-697-1716