Reliable 113-8432 (1138432) crankshaft rear seal designed for heavy-duty Caterpillar equipment. This essential engine component ensures leak-free performance during extreme workloads.
Follow Our Latest Engine Parts Updates on Facebook| Item Attribute | Detailed Information |
|---|---|
| 1. Part Number | 113-8432 / 1138432 |
| 2. Product Name | Crankshaft Rear Oil Seal (Seal-Crankshaft) |
| 3. Model Compatibility | Caterpillar 3406, 3406B, 3406E, 3408, 3412, C15, C18 Engines |
| 4. Machine Applications | D8R, D9R Dozers, 621F Scrapers, 980G Wheel Loaders, 375 Excavators |
| 5. Condition | Brand New, OEM Standard Replacement |
| 6. Type | High-Temperature Fluoroelastomer Sealing Component |
| 7. MOQ | 1 Piece |
| 8. Stock Status | In Stock / Fast Worldwide Dispatch |
| 9. Packaging | Industrial Export Packing / Genuine Style Box |
| 10. Payment Terms | T/T, Western Union, MoneyGram |
| 11. Delivery Methods | Express: DHL, Fedex, EMS, UPS or by Air/Sea |
| Purchase Focus | Standard Aftermarket Seals | Our OEM Standard 113-8432 |
|---|---|---|
| 1. Material Integrity | Low-cost rubber, prone to hardening | High-grade Viton / Fluoroelastomer for heat resistance |
| 2. Sealing Edge Precision | Irregular finish causing micro-leaks | Precision-molded double-lip design for zero leakage |
| 3. Wear Sleeve Match | Often loose fitting | Perfect interference fit for Caterpillar crankshafts |
| 4. Operational Life | 500 - 1,000 hours | Matches original service interval (8,000+ hours) |
| 5. Chemical Resistance | Degrades with modern synthetic oils | Full compatibility with diesel engine lubricants |
| 6. Overall Cost-Benefit | Frequent downtime for replacement | One-time install for long-term reliability |
Question 1: What causes oil leaks near the rear of a Caterpillar C15 or 3406 engine?
Answer: Leaks in this area are often due to a worn 113-8432 rear seal. Common causes include excessive crankcase pressure, high engine temperatures, or natural wear of the sealing lip over thousands of hours. Replacing with a high-quality 1138432 seal restores the vacuum and prevents oil loss.
Question 2: How can I prevent premature failure of my new 113-8432 crankshaft seal?
Answer: Ensure the crankshaft surface is smooth and free of grooves. Use the correct installation tool to seat the 113-8432 seal evenly. Avoid dry-starting by applying a light film of oil to the sealing lip as recommended by the service manual.
Question 3: Why Choose This Seal-Crankshaft?
Answer: OEM-standard tri-metal structure. Trusted by repair shops and equipment fleets for heavy-duty earthmoving applications.
Our team helps operators achieve maximum uptime:
Identify potential risks during maintenance checks
Recommend suitable replacement parts if needed
Support both inspection advice and parts supply for Caterpillar and Cummins systems
We specialize in high-performance engine solutions for brands including Cummins, Komatsu, Caterpillar, Isuzu, Kubota, Yanmar, and Weichai. Whether you are performing a minor maintenance or a complete engine overhaul, we provide the precision parts required for success.
Our main product range includes: Engine Assemblies, Cylinder Liners, Pistons, Piston Rings, Main Bearings, Connecting Rod Bearings, Thrust Washers, Overhaul Gasket Kits, Fuel Injection Pumps, Injectors, Crankshafts, Turbochargers, Water Pumps, Oil Pumps, Cylinder Blocks, Cylinder Heads, and Connecting Rods.
Please provide your details below. Our team will respond with availability and pricing within 24 hours.
Click the button below to visit our Facebook profile and stay updated with the latest news and updates!
Visit Facebook Profile
English
English