8970715611 Rear Crankshaft Oil Seal For Engines With 4JB1 And 4JJ1 Engines
The 8970715611 rear crankshaft oil seal is a key sealing component specifically designed for the Isuzu 4JB1 diesel engine. Installed at the rear end of the engine crankshaft, it seals the gap between the crankshaft and flywheel housing, preventing oil leakage. This oil seal maintains stable sealing performance under continuous engine operation, high temperature, and high-speed rotation conditions, effectively protecting the engine lubrication system and flywheel area. It is widely used in overhauls, maintenance, and oil leak repairs of the 4JB1 engine.
Designed for rear crankshaft sealing: Specifically designed for the rear crankshaft position of the 4JB1 engine, with structural dimensions matching original factory installation requirements.
| Part Number |
8970715611 |
| Type |
Rear Crankshaft Oil Seal |
| Mounting Location |
Rear Crankshaft / Flywheel Side |
| Applicable Engine |
Isuzu 4JB1 |
| Function |
Prevents oil leakage from the rear crankshaft |
| Material |
Oil-resistant rubber |
Application Scenarios
Isuzu 4JB1 diesel engine overhaul;
Repair of oil leaks at the rear crankshaft;
Preventative replacement when replacing the clutch or flywheel;
Engine maintenance in construction machinery, light trucks, and industrial power equipment.






Frequently Asked Questions
Q1: What is your main products?
A1: We are specialized in the excavator engine spare parts, for example Main cylinder block, cylinder head, crankshaft, Engine assembly, piston, cylinder liner, piston ring, camshaft, connecting rod, oil pump, water pump, valve series products, movement, etc. almost all parts of the entire engine.
Q2: Do you test all products before shipping?
A2: Yes, we conduct 100% testing before shipping.
Q3: Which engine models is this Rear Crankshaft Oil Seal compatible with?
A3: This product is designed for specific diesel engine models. If you can provide the engine model or original part number, we can confirm compatibility before shipping to avoid incompatibility issues.
Q4: Can you provide cross-reference information for OEM part numbers?
A4: Yes, we support original part interchange. Please provide the original part number, and we will verify the replacement part accordingly.
Q5: What should I do if there is a problem with the product?
A5: Our products undergo professional testing and are of very stable quality. If you do find any problems, please contact us. We have a professional after-sales team to help you solve the problem.
Why Choose Us?
• Over 20 years of experience specializing in construction machinery, engines, and parts – with stable experience supplying mainstream brands and models.
• Extensive experience in model matching enables us to provide customers with accurate parts selection, reducing procurement risks.
• A long-term, stable, and reliable supply system ensures reliable product sourcing and meets continuous procurement needs.
• For product information or quotations, our professional team will provide you with detailed answers immediately upon receiving your request.