Caterpillar 3406 C15 Rear Main Crankshaft Seal | 1425868 | FP Diesel

New aftermarket rear main crankshaft seal (part number 1425868) for Caterpillar 3406 family and C-series diesel engines. Manufactured by FP Diesel, this is a one-piece seal with an integrated wear sleeve that seals the rear of the crankshaft. It replaces Caterpillar 142-5868.

Key Features:

• New aftermarket rear main crankshaft seal; Caterpillar reference 1425868
• One-piece seal with integrated wear sleeve
• Fits Caterpillar 3406B/C/E, C15/C16/C18, and 3408/3412 engines
• Supersedes earlier Caterpillar numbers 130-8107, 2W1734, and 4P2734
• Restores a proper rear crankshaft oil seal

Specifications:

• Base part number: 1425868 (FP Diesel FP-1425868)
• Caterpillar reference: 142-5868
• Component type: Rear main crankshaft seal with integrated wear sleeve
• Condition: New — Aftermarket (FP Diesel)
• Engine make: Caterpillar
• Engine models: 3406B, 3406C, 3406E, C15, C16, C18, 3408, 3412
• Supersedes: 130-8107, 2W1734, 4P2734, 3190785

Compatibility / Fitment:

• Fits Caterpillar 3406B, 3406C, 3406E, C15, C16, C18, and 3408/3412 diesel engines
• One-piece seal with an integrated wear sleeve — no separate sleeve required
• Installs to the rear of the crankshaft — a seal/sleeve installer tool is recommended for correct fitment
• Verify by engine serial before ordering
• One per engine

Conclusion:

The FP Diesel 1425868 is a new aftermarket rear main crankshaft seal with integrated wear sleeve for Caterpillar 3406-family and C-series engines, replacing Caterpillar 142-5868 (and superseding 130-8107, 2W1734, and 4P2734). It restores a proper rear crankshaft seal. Verify by engine serial before ordering.