Engine Front Oil Seal Service Kit 3804899 For 4BT 4BT3.9 4BT39 Engine

Keywords: 3804899 front oil seal kit, 4BT crankshaft front seal, 4BT3.9 crankshaft oil seal service kit, diesel engine front crank seal, excavator engine sealing repair kit, aftermarket crankshaft sealing spare parts

🔹Product Overview

Front Oil Seal Service Kit Part No.3804899 is complete crankshaft front sealing repair kit, compatible with 4BT, 4BT3.9, 4BT39 diesel engines widely fitted on excavators, heavy‑duty trucks and industrial machinery. It installs at front end of crankshaft, sealing crankshaft housing to prevent engine oil leaking out from front timing gear cover, meanwhile blocking dust, mud and water from entering internal engine components. This service kit resolves common failures including crankshaft front oil seepage, oil leakage, timing chamber contamination caused by seal lip wear, rubber aging and spring fatigue under long‑term high‑speed rotating and high‑temperature working conditions. Manufactured strictly according to OEM dimensional standard for engine maintenance and overhaul repair.

🔹Detailed Specifications

🔹Key Features & Advantages

• Exact OEM inner diameter, outer diameter and thickness, perfect matching for 4BT series crankshaft and timing cover installation position.
• Premium composite sealing material, excellent heat‑resistance, oil‑resistance and lip wear‑resistant performance.
• Stable sealing performance under high‑speed crankshaft rotation, resist aging and hardening in high‑temperature engine compartment environment.
• Effectively fix crankshaft front oil leakage fault, protect timing gear components from dust and muddy water erosion.
• Every kit passes dimension and appearance inspection before factory delivery.
• Critical sealing repair kit for front crankshaft service and full engine overhaul project.

🔹Application Scope ‑

Fit Equipment: Excavators, heavy‑duty trucks and industrial machinery equipped with 4BT,4BT3.9,4BT39 diesel engine ‑ Widely used for machinery repair workshops, vehicle fleet maintenance and engine overhaul projects.

🔹Our Company Advantage

We are professional supplier of full‑range construction machinery spare parts, supplying hydraulic parts, engine parts, electrical parts, seal kits and complete overhaul kits. ‑ Large ready stock for various machinery spare parts ‑ Factory‑direct wholesale competitive price ‑ Mixed‑order & one‑stop spare‑parts procurement supported ‑ Professional part‑number matching technical support service

🔹Packaging & Shipping ‑

Independent plastic dust‑proof packaging, avoid scratch and extrusion deformation in transit ‑ Export‑grade outer carton for safe sea and land transportation ‑ Multiple shipping options: sea freight, air freight, international express for small trial orders ‑ Export documents such as Commercial Invoice, Packing List can be provided.

🔹Contact Us

If you need more excavator spare parts or other construction machinery replacement components, please send your parts list to us. We will offer our best quotation for you quickly.