Roadmaster Tow Bar Adapters: 030, 031, 031-5, 032 & 039-2

A flat-towing adapter joins a motorhome's tow bar to the mounting brackets on the towed vehicle. Although the ends can look similar, Roadmaster 030, 031, 031-5, 032 and 039-2 do different jobs. Start by identifying the tow bar brand and model, followed by the baseplate style on the vehicle. If the Roadmaster tow bar is an older Sterling or BlackHawk, its serial number also matters.

Which Roadmaster adapter fits your setup?

Roadmaster 031 or 031-5: check the tow bar serial number

Both kits change the ends of compatible Roadmaster tow bars so they can connect to Blue Ox baseplates, but the correct adapter is determined by the tow bar's design and production version.

• 031: Listed for Falcon 2, Falcon All Terrain, BlackHawk and BlackHawk 2 All Terrain with serial numbers up to 16,500, plus Sterling with serial numbers up to 14,500.
• 031-5: Listed for Nighthawk and Falcon 3HD, BlackHawk 2 All Terrain with serial numbers above 16,500, and Sterling with serial numbers above 14,500. It includes the collars for the newer connection design.

If the tow bar's identification label is missing or unreadable, identify the exact arm and end assembly through Roadmaster rather than assuming 031 and 031-5 are interchangeable. See the manufacturer's 031 adapter details and 031-5 adapter details.

Direct-Connect versus crossbar-style adapters

030: Changes compatible Blue Ox motorhome-mounted tow bar ends to connect with a Roadmaster baseplate. On a Roadmaster crossbar-style system, the appropriate quick-disconnect crossbar must be present. Roadmaster excludes Blue Ox tow bars that fold and store on the towed car.

032: Provides an adapter bar for compatible Blue Ox, Demco and Curt tow bars on a Roadmaster crossbar-style baseplate. Its quick-disconnect arrangement allows removal and is compatible with the Roadmaster Guardian rock shield. It does not attach to Roadmaster Direct-Connect baseplates.

039-2: A pair of removable adapter arms for Roadmaster Direct-Connect baseplates used with compatible Blue Ox, Demco and Curt tow bars. The arms lock into the baseplate with a quarter-turn; they are not for crossbar-style baseplates or single-lug connections.

Compare adapter photographs and shop by part number

030 — Roadmaster Direct-Connect or crossbar-style

Blue Ox tow bar ends are replaced; not for car-stored tow bars.

View Roadmaster 030

031 — Blue Ox baseplate

Earlier Sterling / BlackHawk All-Terrain variants; check serial number.

View Roadmaster 031

031-5 — Blue Ox baseplate

Nighthawk, Falcon 3HD and later applicable Sterling / BlackHawk.

View Roadmaster 031-5

032 — Roadmaster crossbar-style only

Quick-disconnect adapter bar; supports Guardian rock shield.

View Roadmaster 032

039-2 — Roadmaster Direct-Connect only

Pair of removable arms; not for single-lug connections.

View Roadmaster 039-2

Off-road bumper D-ring connections are different

If the tow bar is connecting directly to reinforced D-ring shackle tabs on an aftermarket bumper, use a bumper adapter rather than one of the baseplate adapter bars above. Roadmaster 035 is for compatible ¾-inch-thick shackle tabs. Roadmaster also offers a distinct 035-1 for 1-inch-thick tabs. Match the tab thickness, hole diameter and tow bar before buying. The bumper manufacturer must explicitly approve the bumper for flat towing; a recovery shackle alone does not establish towing suitability. See Roadmaster's bumper adapter selection information.

Final checks before connecting

1. Read the part number on the tow bar and identify whether it mounts/stores on the motorhome or on the towed vehicle.
2. Identify the actual Roadmaster baseplate style, or confirm that the vehicle instead carries a Blue Ox baseplate or approved bumper mount.
3. For the 031 family, check the Sterling or BlackHawk serial number and the type of tow bar end.
4. Follow the manufacturer's instructions for the correct pin, shoulder bolt, washers, clips and tow bar attachment. Recheck engagement and the safety cable connections before driving.

An adapter is not a universal towing-compatibility approval. Confirm that the vehicle can be flat towed, that the baseplate and tow bar are approved together and that the complete system's weight ratings are sufficient for the towed vehicle.