Description
World American WA13241 is a Bendix LP-2-style low air pressure indicator switch that closes when system pressure drops to 66 PSI, illuminating the dash warning lamp on Class 8 air-brake-equipped trucks. This 12/24V DC, two-terminal, 1/8″ NPT switch is a direct aftermarket replacement for Bendix 13241/13241A and 280743 series, and is used by Mack, Volvo, Paccar, WABCO, and Tramec Sloan as their factory low-pressure indicator.
Specifications
| Manufacturer | World American |
|---|---|
| Part Number | WA13241 |
| Part Type | Low Air Pressure Indicator Switch (LP-2 style) |
| Cut-Out Pressure | 66 PSI |
| Voltage | 12V or 24V DC |
| Terminal Quantity | 2 (single pole) |
| Thread Size | 1/8 in NPT |
| State at 0 PSI | Normally closed |
Cross References
This switch replaces or is equivalent to the following part numbers:
- Bendix: 13241, 13241A, 280743, 280743N, 280743X, BE13241, BE13241A
- Mack: 745-280743, 5396-13241A
- WABCO: 8940416062, 8940416092
- Volvo: BW280743, 340993, 85102153
- Paccar: K30148
- NAPA: MBIBE13241
- Tramec Sloan: 401239
Applications
This low air pressure switch is used on FMVSS 121 air-brake systems found in:
- Freightliner Cascadia, Columbia, Century, M2, FLD (1990s-present)
- Volvo VNL, VNM, VHD, VAH (1990s-present)
- Mack CH, CHU, CL, CXU, Granite, Pinnacle, MRU (1990s-present)
- Kenworth T660, T680, T800, W900 (1990s-present)
- Peterbilt 379, 386, 387, 389, 567, 579 (1990s-present)
- International ProStar, LoneStar, 9200, 9400 (1990s-present)
Verify thread size and voltage on your existing switch before ordering to confirm fitment.









