Caterpillar 2394386 Front Idler Group Assembly

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Part Name	Front Idler Group Assembly
Position	Left Hand (LH)
Material	Forged Alloy Steel
Surface Treatment	Induction Hardened
Application System	Undercarriage Track System
Pitch	203.2 mm
Seal Type	Floating Duo-Cone Seal
Net Weight	68 kg
Package Dimensions	75 × 45 × 45 cm

Manufacturer No.

2394386
239-4386
CA2394386

OEM Part No.

2394386
239-4386

Engine Part No.

C7.1
C6.4
C6.6
C6
3066
3054C
C4.2
C4.4

Interchange No.

2487143
248-7143
1156366
2487151

Fitment Vehicles

320D
320D L
320D LN
320D GC
320D FM
320D LRR
320D RR
320D2
320D2 L
320E
320E L
320EL
321D LCR
323D
323D L
323D LN
323D2
323D2 L
323E
323E L
323F
325F
315D L
319D
319D L
319D LN
320F
321D

The Caterpillar 2394386 Front Idler Group is a critical undercarriage component designed to guide the track chain and maintain proper tension on hydraulic excavators. This assembly includes the idler shell, shaft, brackets, and seals, manufactured to OEM specifications for fit and service life.

Constructed from forged alloy steel with induction-hardened running surfaces, the idler resists abrasive wear and impact loading in severe excavation applications. The assembly is configured for Left Hand (LH) installation. It serves as a direct replacement for OEM part numbers 239-4386 and 2394386, and supersedes to updated part number 248-7143.