Caterpillar® 621E, 621F – Wheel Tractor-Scrapers

Serial number ranges

Tractor S/N: 6AB1-UP,2PD1-UP,4SK1-UP,8PL1-UP
Scraper S/N: 6BB1-UP,2TF1-UP,5JK1-UP,9NL1-UP

Application (Cylinder)	Caterpillar® Part No.	Description	Bore	Rod	Note / Serial No.
Steering	243-0386	Seal Kit	5.000"	2.500"	S/N: 6BB1-1234,2TF1-638
	242-2542	Seal Kit	5.000"	2.500"	S/N: 6BB1-1234,2TF639-UP Use with 7J-5525 Piston
	243-0384	Seal Kit	5.000"	2.500"	S/N: 6BB1-1234 Use with 9T-8563 Piston
	243-0384	Seal Kit	5.000"	2.500"	S/N: 6BB1235-UP,5JK,9NL
Servo	8T-4771	Seal Kit	1.500"	0.750"
Load	242-2539	Seal Kit	5.500"	2.500"	S/N: 6AB1-1165,2PD1-739
	9X-6027	Seal Kit	5.500"	2.500"	S/N: 6AB1166-1578,2PD740-1021,8PL
	242-2539	Seal Kit	5.500"	2.500"	S/N: 6AB1579-UP,2PD1022-UP,4SK
Apron	244-0957	Seal Kit	7.250"	2.750"	S/N: 6BB1-1234,2TF
	244-0954	Seal Kit	7.250"	2.750"	S/N: 6BB1-1234
Apron (cont)	244-0954	Seal Kit	7.250"	2.750"	S/N: 6BB1235-UP,5JK,9NL
Bowl	242-2545	Seal Kit	6.000"	2.500"
Ejector	246-0643	Seal Kit	6.500"	4.000"	S/N: 6BB1-1234,2TF1-699 Use with 3G-1729 Head
	246-0641	Seal Kit	6.500"	4.000"	S/N: 6BB1-1234 Use with 9T-6530 Head
	246-0641	Seal Kit	6.500"	4.000"	S/N: 6BB1235-UP,2TF700-UP,5JK,9NL

For reference only. Send us your machine serial number before ordering and we will confirm the correct kit.

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Caterpillar®, Komatsu®, Volvo®, JCB® and other brand names are registered trademarks of their owners and are used only to indicate compatibility.