Your Trusted Auto Body Shop in Signal Hill, CA

3J's Auto Body has been serving Signal Hill, Long Beach, and the greater LA area for over 20 years. As an I-CAR Gold Class certified collision repair shop and an authorized Rhino Linings installer, we handle everything from minor dents and full paint jobs to spray-in bedliners and complete truck accessory builds — all under one roof at 1855 E 29th St, Signal Hill, CA 90755.

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  If you're searching for a spray-in bedliner near you, 3J's is Signal Hill's only certified Rhino Linings dealer. Our spray-on bedliners bond permanently to your truck bed, outlasting drop-in liners with a lifetime warranty backed by Rhino Linings. We offer same-day installs on most trucks and serve customers from Long Beach, Torrance, Lakewood, Compton, Carson, Downey, and across the LA basin.

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  Beyond Rhino Liner, we're a full-service truck accessories shop carrying top brands like BAKFlip, TruXedo, AMP Research, Husky Liners, Morimoto, and BackRack. Whether you need a tonneau cover installed, power running boards, LED lighting, floor liners, or a headache rack — our team handles the install so everything fits and functions the way it should. We also offer curated truck accessory bundles that combine your most-wanted upgrades at a package price. Stop in for a free quote or call us at 562-424-6744. Serving Signal Hill, Long Beach, Torrance, Lakewood, Carson, and the entire LA area.