6J8391 Spring (Inner) for Caterpillar Recoil System

6J8391 is an inner recoil spring used in Caterpillar engines and motor graders. It is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts).

The part is identified by the Caterpillar equipment part number 6J8391 and is used in applications associated with Caterpillar engine models and Caterpillar motor grader models listed below. The designation “Inner” identifies the spring position within the recoil spring assembly.

Fitment

• Equipment manufacturer: Caterpillar
• Equipment type: Engine
• Equipment type: Motor grader
• Engine model: Caterpillar 3304
• Engine model: Caterpillar 3306
• Engine model: Caterpillar 3406
• Engine model: Caterpillar 3406B
• Engine model: Caterpillar 3406C
• Motor grader model: Caterpillar 120G
• Motor grader model: Caterpillar 12G
• Motor grader model: Caterpillar 130G
• Motor grader model: Caterpillar 140G
• Motor grader model: Caterpillar 14G

Cross-reference numbers

The following number designations identify the same part in the supplied equipment and parts catalog data:

• 6J8391
• 6J-8391

6J8391 is the equipment manufacturer part number supplied for this application. The hyphenated form 6J-8391 is a catalog formatting variant of the same number.

Specifications