1x O-RING – GGA-2909 Details: O-Ring 0.139 in C/S x 1.609 in ID 3.53 mm C/S x 40.87 mm ID, Viton 75, Series # -223 OE Replacements: GGA-2909, 56AX596, DDEA4720180380, 061-8561, 0618561, 61-8561, 56AX596, A4720180380 Cross References: FREIGHTLINER TRUCK PARTS DDEA4720180380 CATERPILLAR 061-8561 CATERPILLAR 0618561 CATERPILLAR 61-8561 MACK 56AX596 DETROIT DIESEL A4720180380