RAM ProMaster Van Conversions

The RAM ProMaster is one of the most popular platforms for van conversions. It's less expensive than a Sprinter, has the widest interior of any Class B van, and its front-wheel-drive layout creates a flat cargo floor that simplifies every part of the build. Whether you're researching costs, comparing kits, or planning a custom conversion, we've put together the resources below.

ProMaster Conversion Guides

Why the ProMaster Works for Van Conversions

Three things set the ProMaster apart from other van platforms:

The flat floor. Front-wheel-drive means no driveshaft tunnel running down the center of the cargo area. The entire floor is flat and low, which means insulation, subfloor, flooring, and furniture all lay flat without custom framing. This simplifies both DIY and professional builds.

The width. At 6.5 feet of interior width, the ProMaster is the widest van in its class. That extra space opens up floor plan options that aren't possible in a Sprinter or Transit. In the 136-inch wheelbase model, many layouts can fit the bed sideways (east-west), freeing up the rest of the van for living space.

The price. On the used market, a comparable ProMaster costs $10,000-$15,000 less than a Sprinter — that savings can go toward the build itself, getting you a better conversion for the same total budget. On a new van, the gap is smaller ($2K-$5K), but still meaningful when you're already spending on the conversion. Read the full platform comparison if you're still deciding which van to buy.

ProMaster Configurations for Conversion

Not every ProMaster works equally well for a camper van. Here's what to look for:

• High Roof: Essential for a livable camper. Standard roof ProMasters don't have standing room. High roof gives you about 6'3" of interior height.
• 159" wheelbase: The longest option and best for full-time builds. More floor space for a bathroom, larger kitchen, or dedicated workspace. About 12.5 feet of cargo length.
• 136" wheelbase: Shorter and easier to drive and park. Works well for weekend and travel builds. About 10 feet of cargo length. The sweet spot for most conversions.
• 2500 vs 3500: The 3500 has a higher payload capacity, which matters when you add hundreds of pounds of build materials, water, and gear. Most full conversions are better on the 3500 chassis.

Our ProMaster Builds

We convert ProMasters regularly at our shop in San Diego. Each build starts with a consultation to figure out your priorities, your travel style, and your budget. We put together a detailed quote broken down by system so you know exactly where every dollar goes.

Want to see what we've built? Check out our past projects or read our ProMaster service page for more about our build process.