124 589 00 91 00 Test cap - WS20.00-P-0018B

FG 20/Set B 

MODEL 107, 123, 124, 126, 129, 140, 170, 201, 202, 210, 211, 215, 216, 219, 220, 221, 230, 240, 461, 463, 901, 902, 903, 904 with bayonet lock on the expansion tank 

MODEL XD1, XD2, XD3, XD4, XD5, XD6, XD7, YD1, YD2, YD3, YD4, YD5, YD6, YD7, WD1, WD2, WD3, WD6, WD7 with bayonet lock on the expansion tank 

MODEL 220 with ENGINE 648.960 with bayonet lock on the expansion tank 

MODEL 221 with bayonet lock on the expansion tank 

MODEL 668, 670 with ENGINE 900.9 with bayonet lock on the expansion tank 

Use: 

57 mm tester cap (System Renk) for coolant expansion tank in combination with test equipment 124 589 24 21 00 and filling device.

Fig 1: Identifying Test Cap (124 589 00 91 00)

Courtesy of MERCEDES-BENZ USA