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 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.

5 star ratingCame here without a clue on what parts I needed let alone how to fix our trailer. We have mobile showers for the homeless and one of our trailers needs new jacks. These guys didn't have the jacks I needed in stock but they walked me through everything I would need plus recommend a place where I could get the jacks. I didn't get the names of the 2 gentlemen who helped me but if you want help from people who know what they're doing and take the time to help you, this is the place to go!

Mel T. Avatar
Mel T.

5 star ratingThis place is a gem a hole in the wall full of anything you need to repair or upgrade any trailer. I came here looking for a matching spare wheel for my utility trailer and they had it in stock.

Arturo J. Avatar
Arturo J.