Dodge RM400 Parts & Accessories

Find Dodge RM400 parts for brake maintenance and suspension support at Black Ops Auto Works. Compare DFC wheel cylinders and brake drums for the installed brake package, plus Hellwig helper springs for the exact chassis application.

Brake Components and Helper-Spring Choices

Choose wheel cylinders by complete RM400 coverage, bore, connections and required side or axle position. Match a replacement drum to the brake package and measured dimensions, then review the other service pieces needed. Hellwig lists 9510 for specified 1973–1974 RM400 applications and requires a separate matching installation kit.

Choose Your Part

• Choose the specific hydraulic or drum repair needed.
• Identify chassis year, installed brakes and required side or axle.
• Confirm exact coverage and supplied quantity.

Frequently Asked Questions

How do I choose brake wheel cylinders for my Dodge RM400?

Require explicit RM400 application and the correct installed cylinder dimensions.

Are the two cylinder references interchangeable?

Do not assume so. Match the stated position, connections and complete brake application.

Will a Dodge W300 brake drum fit my RM400?

Some exact drums have shared vehicle coverage. Check complete RM400 application for the manufacturer part number, installed brake package and measured drum dimensions.

Does the helper-spring listing establish RM400 suspension fitment?

Hellwig lists part 9510 for specified 1973–1974 RM400 applications. Confirm the chassis and spring arrangement and select the required matching installation kit.

Can you help review an RM400 brake part?

Send chassis identification, brake position and existing component details or the proposed part number through our contact page.

Related Collections

Explore DFC brake components, or ask our team about the exact RM400 application.