Undercar Parts & Systems

Transmission Cooler Lines

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When automatic transmission oil cooler lines fail, the only fix is a quality replacement. Dorman produces a full line of direct-replacement transmission lines for most vehicles on the road today. Our trans lines match the factory fit for a dependable installation and are made from tough, durable materials to deliver reliable performance for years, backed up by a limited lifetime warranty.

Active Suspension

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More vehicles than ever are equipped with suspension systems that improve ride, handling, load capacity, and aerodynamics for fuel efficiency. When system components fail, it means a costly visit to the repair shop. Only Dorman offers the affordable aftermarket undercar parts and latest technology your customers want, and the coverage you need.

Flexible Fuel Lines

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Replacing a corroded fuel line is often a frustrating job. Original equipment fuel lines are often difficult to re-route under the vehicle. And while braided steel fuel lines are available in pieces or in bulk, they still require significant work to get them ready for installation.

These Dorman OE FIX lines are flexible stainless steel, cut to the full length of the original on specific vehicles, with connectors for the easiest possible installation. By enabling a faster installation that’s more reliable, they are better in every way than traditional solutions.

Fuel Tanks

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Fuel tanks should last for decades, so it's important to source the right parts and replace worn accessories for a complete and comprehensive repair. That's exactly what you get with Dorman. We build highly durable, failure-resistant steel tanks, as well as all the components you need—from sending units to lock rings, filler necks, and more. Rest assured that every undercarriage car part is not only the result of rigorous Dorman engineering but comes complete with our limited lifetime warranty.

Heater Hoses

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Heater hose assemblies are exposed to harsh conditions, often causing inferior plastic materials to become brittle and crack. Especially in more complex, multipiece assemblies, you need more durable replacements to ensure a reliable repair. That's where Dorman expertise makes all the difference.

Fluid Reservoirs

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Need an exact-fit replacement fluid reservoir with reliable quality, and all the components required for installation?

Dorman has hundreds of different coolant, windshield washer fluid, and power steering fluid reservoirs for hundreds of millions of vehicles in operation, each of which is rigorously tested. Many designs also include value-adds like caps, level sensors, pumps and hoses, and even upgraded features to help reduce failure points seen in original equipment.