Oceanside Transmission Oceanside Transmission also does vehicle repairs on Automatic Transmissions, Clutches, Transmissions. They are located on 229 S Coast Hwy in Oceanside. They are certified and qualified to AAA. Oceanside Transmission They have a total of 9 reviews, 5 positive reviews and 2 negative reviews. They can be reached by calling (760) 722-7176 They accept Discover, American Express, Master Card, Visa. for payment.