Rear Crankshaft Oil Seal 3926126 For 4B3.9 6B5.9 6C8.3 ISB6.7 ISC ISL QSB4.5 QSB5.9 QSB6.7 QSC8.3 Engine

Keywords: 3926126 rear crankshaft oil seal, 4B3.9 crankshaft rear seal, ISB6.7 rear main oil seal, diesel engine rear crank seal, excavator engine sealing spare parts, aftermarket crankshaft rear sealing gasket

🔹Product Overview

Rear Crankshaft Oil Seal Part No.3926126 is heavy‑duty rear main shaft sealing component, compatible with 4B3.9, 6B5.9, 6C8.3, ISB6.7, ISC, ISL, QSB4.5, QSB5.9, QSB6.7, QSC8.3 series diesel engines for excavators, heavy‑duty trucks and industrial machinery. It is mounted at the rear end of crankshaft between crankshaft and flywheel housing, preventing engine oil leaking out from flywheel side, and stopping dust, muddy water and impurities entering engine crankcase. This replacement seal solves common troubles including rear crankshaft oil seepage, serious oil leakage, flywheel housing oil contamination caused by sealing lip abrasion, rubber aging and spring fatigue under long‑time high‑temperature and high‑speed working condition. Produced strictly following OEM dimension standard for engine repair and overhaul service.

🔹Detailed Specifications

🔹Key Features & Advantages

• Exact OEM inner diameter, outer diameter and thickness size, perfectly match crankshaft and flywheel housing installation position.
• High‑performance composite sealing material, outstanding heat‑resistance, oil‑resistance and lip wear‑resistant property.
• Maintain stable sealing effect under continuous high‑speed crankshaft rotation, resist rubber aging and hardening in high‑temperature engine environment.
• Effectively resolve rear crankshaft oil leakage fault, protect flywheel and clutch assembly from oil pollution damage.
• Every oil seal passes dimension and appearance inspection before factory delivery.
• Essential sealing spare part for rear crankshaft repair and full engine overhaul project.

🔹Application Scope ‑

Fit Equipment: Excavators, heavy‑duty trucks and industrial machinery equipped with 4B3.9,6B5.9,6C8.3,ISB6.7,ISC,ISL,QSB4.5,QSB5.9,QSB6.7,QSC8.3 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.