| 12.37.402 | Dhr luchthoorn losse voorsteun | separate front support for trumpet DHR 300 | 30000 | STUK |
| 12.37.440 | Dhr luchth. verlring dhr/sonab | DHR / SONABEL reducing ring | 30002 | STUK |
| 12.37.433 | Dhr luchth. snelk.t-stuk 3x8mm | separate 3 x 8 mm T connector | 90006 | STUK |
| 12.37.432 | dhr luchth. snelkopp. 8mmx1/4" | separate 8 mm x 1/4" ET quick coupling | 90005 | STUK |
| 12.37.472 | Dhr 200 los membraan 78x0,2mm | separate DHR 200 membrane, 78 x 0.2 mm | 20052 | STUK |
| 12.37.431 | Dhr 300 los membraan 52x0,15mm | separate membrane DHR 300 series, diameter 52 x 0.15 mm | 30005 | STUK |
| 12.37.471 | Dhr 200 los membraan 78x0,5mm | separate DHR 200 membrane, 78 x 0.5 mm | 20051 | STUK |
| 12.37.375 | Dhr luchthoorn relais 65a 24v | relay, 24V, max 65 amp. for compressor | 90001 | STUK |
| 12.37.380 | Dhr-luchth. luchtvent. 8mm 24v | separate electric air valve + 8 mm quick coupling, 24V | 90004 | STUK |
| 12.37.371 | Dhr-drukknop luchthoorn 1-toon | push button for use with single air horn | 90002 | STUK |