1S2021 Beaded Gasket for Caterpillar

1S2021 is a beaded gasket for Caterpillar equipment. This is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts).

The part is listed for several Caterpillar machine types, including track-type tractors, off-road dump trucks, wheeled bulldozers, and wheel tractor-scrapers. The compatible applications and model designations are listed below.

Fitment

• Track-type tractor: Caterpillar D9G.
• Off-road dump truck: Caterpillar 769 and 769B.
• Wheeled bulldozer: Caterpillar 824 and 834.
• Wheel tractor-scraper: Caterpillar 641, 641B, 650B, 651, 651B, 657, 657B, 660B, 666, and 666B.

Fitment is specified by machine type and model series. The listed applications cover the Caterpillar models identified for catalog number 1S-2021 in the available product data.

For the wheel tractor-scraper group, the listed models include the 641 series, 651 series, 657 series, and 666 series, together with the specified 650B and 660B models. The suffix letters shown in the model designations are part of the application information and should be matched with the equipment identification.

Cross-reference numbers

• Caterpillar catalog number: 1S-2021.
• Product SKU: 1S2021.

The SKU 1S2021 corresponds to the catalog number format 1S-2021. The hyphenated catalog number is the equipment-part reference provided for the listed Caterpillar applications.

Specifications

The dimensional data supplied for this part is 12.5 cm in length, 0.5 cm in width, and 12.5 cm in depth. The recorded part weight is 0.3 lb. No additional material, thread, mounting-position, or kit-content specifications are provided for catalog number 1S-2021.