3054883 Valve Seat for Caterpillar Equipment

3054883 is an exhaust valve seat, also identified by the formatted number 305-4883, used in the cylinder head valve assembly of Caterpillar excavators. This is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts).

The valve seat provides the contact surface against which the exhaust valve closes during engine operation. The part is listed for the Caterpillar excavator models and model series shown below.

Fitment

• Caterpillar 311D LRR excavator
• Caterpillar 312D excavator
• Caterpillar 312D L excavator
• Caterpillar 313D excavator
• Caterpillar 314D CR excavator
• Caterpillar 314D LCR excavator
• Caterpillar 315D L excavator
• Caterpillar 319D L excavator
• Caterpillar 319D LN excavator
• Caterpillar 320D FM excavator
• Caterpillar 320D GC excavator
• Caterpillar 320D L excavator
• Caterpillar 320D LN excavator
• Caterpillar 320D RR excavator
• Caterpillar 321D LCR excavator
• Caterpillar 323D excavator
• Caterpillar 323D LN excavator
• Caterpillar 323D SA excavator

Compatibility is specified for the listed Caterpillar D-series excavator configurations. The model suffix should be checked against the identification plate and the engine or cylinder-head application before installation, because the same base model designation may be available in several configurations.

Cross-reference numbers

• 305-4883
• 3054883

3054883 and 305-4883 are two written formats for the same part number. The number without the hyphen is used as the product SKU, while the hyphenated format is the commonly referenced Caterpillar equipment part number.

Specifications

The supplied dimensional data is recorded as length, width, and depth. The part is classified as a valve insert and is intended for the exhaust-valve position indicated by the EX designation in the source part description. Installation requires correct seating in the cylinder head and verification of the applicable engine configuration.