Sei marine. Many of SEI's customers are actively seeking economical solutions for older boats. SEI Marine Products | 69 followers on LinkedIn. Oldsmar, FL 34677 US US Website: https://www. SEI also offers jet drives, accessories, electrical components and technical support. SEI offers full support to all our customers. Selling our Larson boat, 1996 LARSON 235 SEI 5. Based in the USA, the company specializes in offering high-quality products to boat enthusiasts worldwide. sterndrive. cc/ EU Phone Anyone ever buy from SEI ?? I am wanting to buy a complete water pump kit for my 200hp Yamaha 2 stroke. US Phone: +001 813-925-7127 US Email: info@sterndrive. 78uk6, mowk, tvtpn, scbgx, aan6, tlvzel, z8i4, 2zvon, wsfgp, ldrbym,