Trim End Cap/Gland With Seals For Mercury/Mariner - Replacement 99638A1, 8M0021648

About This Product

Dealing with a leaking trim unit on your Mercury or Mariner outboard? This replacement end cap/gland is built to solve the problem properly and permanently. We're not cutting corners here - these caps are manufactured from High Grade Aluminum with excellent corrosion resistance, then given a hard anodized finish for added durability and another layer of protection against harsh marine environments. But the real game-changer is the Viton oil seals we use - this is the highest quality material available for this application, far superior to standard seals. Viton handles heat, chemicals, and environmental exposure much better, meaning you won't be doing this repair again anytime soon. These caps fit Generation 1, 2, and 3 three-ram style trim units, replacing OEM part numbers 99638A1, 8M0021648, 878243A1, and 1100-8M0021648. The quality is noticeable right out of the package - the machining is precise, the anodizing is even, and everything fits exactly as it should. When you're rebuilding your trim system, you want to do it once and do it right, and that's exactly what this end cap allows you to accomplish. The combination of premium aluminum construction, hard anodizing, and Viton seals creates a solution that will outlast the original part and handle the demanding conditions of marine use. Installation is straightforward if you're familiar with outboard maintenance, and once it's on, you can trust that your trim system will hold pressure and function reliably. Don't waste time and money on inferior replacements that will fail again - invest in a quality solution that matches or exceeds OEM specifications. Your future self will thank you when you're not redoing the same repair next season. This is one of those cases where spending a little more for quality actually saves you money and frustration in the long run.