The Best Trailer Supply Shop in Southern California

Why Is Modern Trailer Supply Is The Best?

With more than 74 years of serving Southern California, we are one of the only companies that have over 7,000 parts in stock!.

If you are looking for trailer supplies, boat supplies or recreational vehicle supplies, Modern Trailer Supply is the place for you! We've been family owned since 1947 and have both vintage and modern parts in stock. In addition we strive to price match to any other local trailer companies. So come on town and visit Modern Trailer Supply! Our staff is always friendly, knowledgeable and helpful!

For over 74 years, Modern Trailer Supply has been family owned and operated.

We are locally centered in El Monte California and have a wide variety of products from lights, electrical equipment and accessories.

Why people choose us?

  • Knowledgable Experts
  • Huge Selection of Parts
  • Low Prices

Modern Trailer Supply - 11035 Garvey Ave El Monte, CA 91733


5 star ratingThe guy that runs this place is awesome! Very knowledgeable and thoroughly explains everything. Seems like a very intelligent guy! He really really knows his trailer stuff, and has helped me ID the parts i need on several occasions. Well stocked shop and very reasonable prices, always has the stuff I need when I need it, meaning right away on a moments notice! He even went out of his way and waited for me after closing time on one occasion to allow me to pick up stuff I needed. I'm your customer for life!

Peter P. Avatar
Peter P.

This place has practically everything you need for your trailers.

Brian Garcia Avatar
Brian Garcia

5 star ratingI called here looking for something extremely difficult to find, as a last resort, electrical wiring service in anticipation of purchasing a camper trailer, which they don't do. But Timothy was so helpful, he answered a bunch of other questions and helped problem solve and give me direction on things I was unaware of and not expecting. There are a lot LOT lot of things I can come back for- and due to his awesome attitude of helpfulness, I hope to do that! Thanks Timothy!

Wishiwasatiki T. Avatar
Wishiwasatiki T.