4L7890 Beaded Gasket for Caterpillar Equipment

The 4L7890 is a flat beaded gasket used in Caterpillar equipment, including engine, generator, industrial engine, and ship equipment applications. It is a new aftermarket gasket manufactured by CTP (Costex Tractor Parts).

The part is identified by the SKU 4L7890 and is also written with the hyphenated part-number format 4L-7890. The available application data covers several Caterpillar D-series and G-series engine models. The gasket is listed for use in equipment assemblies identified as engine and generator kits, ship equipment, and industrial engines.

Fitment

• Engine and generator kit: Caterpillar D379B, D398B, D399
• Ship equipment: Caterpillar D379A, D379B, D398A, D398B, D399
• Industrial engine: Caterpillar D379, D379B, D398, D398B, D399, G398, G399

The model designations above are grouped according to the equipment application information available for part number 4L-7890. The D379, D398, D399, G398, and G399 designations refer to the listed Caterpillar engine models and series. Model-specific installation location is not specified in the available data.

Cross-reference numbers

• 4L7890
• 4L-7890

These two formats identify the same gasket part number: 4L7890 without a hyphen and 4L-7890 with a hyphen. No additional supplier or equipment-manufacturer cross-reference numbers are provided in the available product data.

Specifications

The dimensional data describes the supplied gasket as 18.5 cm long and 16.5 cm wide, with a listed depth of 0.08 cm. The separate thickness specification is 0.03 in. Hole dimensions are provided as 0.41 in for six holes and 5.42 in for one hole.

Before installation, the part number, engine model, equipment application, hole arrangement, and gasket dimensions should be compared with the removed component and the service-parts documentation for the specific Caterpillar machine or engine.