| Oil collector kit / accessories See accessory list. | — | BEKO OWAMAT gravity oil-water separator | $130 by model (OWAMAT 12/14, 15, 16) | |
| UL power cable (iCS series) For iCS models (electronic indicator). | — | QWIK-PURE high-efficiency oil-water separator | $101 | |
| 158 gal pre-separation tank (BEKOSPLIT 12/13/14/14S) Required (except BEKOSPLIT 11, integrated tank). | 2801225 | BEKO BEKOSPLIT emulsion separator | $7,579 | |
| 264 gal pre-separation tank (BEKOSPLIT 12–16) Required depending on flow. | 2801226 | BEKO BEKOSPLIT emulsion separator | $8,602 | |
| Buffer tank 158 / 264 gal (option) Additional buffer capacity. | — | BEKO BEKOSPLIT emulsion separator | $8,620 $8,620 (158 gal) · $9,524 (264 gal) | |
| OEKOSORB replacement cartridge — OWAMAT 12 | 4010711 | OWAMAT 12 | $319 | |
| OEKOSORB replacement cartridge — OWAMAT 15 | 4010713 | OWAMAT 15 | $966 | |
| OEKOSORB replacement cartridge — QWIK-PURE CS 100 | 4010719 | QWIK-PURE CS 100 | $219 | |
| OEKOSORB replacement cartridge — QWIK-PURE CS 200 | 4011999 | QWIK-PURE CS 200 | $362 | |
| OEKOSORB replacement cartridge — QWIK-PURE CS 400 | 4051809 | QWIK-PURE CS 400 | $601 | |
| OEKOSORB replacement cartridge — QWIK-PURE iCS 550 | 4051809 | QWIK-PURE iCS 550 | $601 | |
| OEKOSORB replacement cartridges — QWIK-PURE iCS 1100 (set of 2) | 4051809 | QWIK-PURE iCS 1100 | $1,202 | |
| OEKOSORB replacement cartridges — QWIK-PURE iCS 2200 (set of 4) | 4051809 | QWIK-PURE iCS 2200 | $2,403 | |
| OEKOSORB replacement cartridges — QWIK-PURE iCS 3300 (set of 6) | 4051809 | QWIK-PURE iCS 3300 | $3,603 | |
