The Roadmaster Tow Defender 4750 is a roll-up mesh shield that helps protect a vehicle during flat towing. Its original parts breakdown identifies the support tubes, gas struts, collar brackets, safety pins and shoulder-bolt adapters. The shield assembly is distinct from the tow bar that carries it.
Original Roadmaster numbered parts and installation drawings
Locate the manufacturer reference on the drawing, then use the numbered table below to identify its original service part. Open the source PDF to enlarge smaller components.
4750 mesh shield numbered parts drawing
Open 4750 mesh shield numbered parts drawing (manufacturer PDF)
Updated 4750 installation and hardware reference
Open updated 4750 installation and hardware reference (manufacturer PDF)
Original manufacturer parts by callout
These references identify parts of the illustrated assembly. A blank product column means there is no confirmed matching standalone replacement listing on NewRVParts.
| Callout | Roadmaster no. | Component | Product |
|---|---|---|---|
| 1 | 501301-00 | Driver-side support tube | |
| 2 | 501301-10 | Passenger-side support tube | |
| 3 | A-002641 | Female support tube | |
| 4 | B-001574A | Shoulder-bolt mounting adapter | |
| 4a | 4750-02 | Optional extended shoulder-bolt adapter | |
| 5 | B-001174 | Adjustment collar | |
| 6 | C-001708 | Collar bracket | |
| 7 | C-001709 | Male support tube | |
| 8 | 200375-00 | Polymer support-tube bushings | |
| 9 | 350309-80 | Half-inch flat washer in earlier hardware list | |
| 10 | 356997-00 | Safety pin | |
| 11 | 350254-40 | Three-eighths-inch jam nut | |
| 12 | 200024-00 | Ball joint | |
| 13 | 200142-00 | Plastic tube plug | |
| 14 | 350272-00 | Three-eighths-inch locknut | |
| 15 | 200699-00 | Spring button | |
| 16A | 200023-50 | Gas strut, 20.5-inch overall length | |
| 16B | 200023-60 | Gas strut, 21-inch overall length | |
| 17 | 350253-01 | Five-sixteenths-inch locknut | |
| 18 | 350055-00 | Three-eighths-inch by one-inch bolt | |
| 19 | 350094-50 | Half-inch shoulder bolt | |
| 20 | 350259-00 | Half-inch nylon locknut | |
| 21 | 350308-00 | Half-inch flat washer | |
| 22 | 350099-00 | Half-inch by 2.5-inch bolt | |
| 23 | 350101-00 | Half-inch by 3-inch bolt | |
| 24 | 350103-00 | Half-inch by 3.5-inch bolt | |
| Not shown | 4750-10 | Replacement mesh fabric | |
| Not shown | 4700-2 | Earlier kit reference for replacement Velcro straps |
Matching NewRVParts product photographs
Compare complete equipment with the separately sold pins, brackets and mounting hardware. Check the manufacturer model and included components before ordering.
Choose the correct model and attachment
The 4750 is designed for supported motorhome-mounted Roadmaster direct-connect arrangements and compatible Blue Ox or Demco systems. For Roadmaster crossbar-style baseplates, Roadmaster specifies the 4700 model instead. Match the tow bar, baseplate and hardware before ordering a mesh shield. The 910021-00 crossbar shown below is not a 4750 accessory or substitute for the correct shield.