Product Details

113-8432 Rear Crankshaft Seal for Caterpillar 3406 3412 C15 Engines Replacement Supplier

Industrial Grade Sealing Solutions for Heavy-Duty Machine Maintenance

Reliable engine performance starts with precision sealing. If you are searching for the 113-8432 (also listed as 1138432) crankshaft seal, you have found the right source. This specific rear seal is critical for preventing oil leaks in high-torque environments, commonly used in legendary heavy-duty engines like the Caterpillar 3406, 3408, 3412, and C15 series.

As a professional engine parts provider, we focus on delivering OEM Standard Replacement parts that meet or exceed the original specifications. Whether you are performing a routine Engine Overhaul or a complete rebuild, our 113-8432 seal ensures a perfect fit and long-term durability.

Technical Specification & Product Details

Model NO.	Caterpillar 3406, 3406B, 3406C, 3406E, 3408, 3412, C15, C18
Product Name	Crankshaft Seal - Rear
Part Number	113-8432 / 1138432
Type	Oil Seal / Mechanical Seal
Condition	Brand New, OEM Standard Replacement
MOQ	1 Piece
Stock Status	In Stock / Fast Dispatch
Application	Engine rebuild, overhaul, maintenance for Construction & Marine
Payment Terms	T/T, Western Union, MoneyGram
Delivery Methods	Express: DHL Fedex EMS UPS or by Air/ Sea

6 Core Procurement Advantages - Why Choose Our 113-8432?

Feature	Our Replacement Standard	Common Market Parts
Material Composition	High-grade Viton/PTFE for heat resistance	Basic rubber (prone to hardening)
Sealing Precision	Strict OEM clearance tolerance	Inconsistent sizing causing leaks
Installation Fit	Direct drop-in replacement	Requires modification or forcing
Durability	Tested for 5,000+ hours of operation	Unknown lifespan
Wear Sleeve	Includes integral wear sleeve for protection	Often missing or sold separately
Quality Control	100% factory inspection before packing	Batch sampling only

Not sure how this issue affects your equipment?

Our technical team helps operators and fleet managers solve maintenance challenges effectively:

Identify potential risks during engine maintenance to prevent downtime.
Recommend suitable replacement parts if original components show excessive wear.
Support both inspection advice and professional parts supply for international shipping.

Do not wait for a minor leak to turn into a major engine failure. Send Your Part Number to get a quote today.

Direct Contact for Immediate Quotes

Contact via WhatsApp: +8613532379052 Email Us: [email protected]
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Frequently Asked Questions & Troubleshooting

1. Why is oil leaking from the rear of my CAT 3406 engine?

Oil leakage in the rear housing usually indicates a failed 113-8432 crankshaft seal. This is often caused by high crankcase pressure, excessive engine vibration, or simple wear over thousands of operating hours. Replacing it with an OEM-standard seal is the only permanent fix.

2. Can I use the 113-8432 seal on a CAT C15 engine?

Yes, the 113-8432 part number is cross-compatible with the C15 and C18 series engines. It is designed to handle the thermal expansion and high-speed rotation typical of these heavy-duty power plants.

3. Why Choose This Crankshaft Seal?

Our 113-8432 features an OEM-standard tri-metal structure and high-performance polymer sealing lips. It is trusted by repair shops and equipment fleets globally for its ability to maintain a tight seal under extreme pressure.

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About Our Engine Parts Supply: We specialize in providing high-quality engine components for leading brands including Cummins, Komatsu, Caterpillar, Isuzu, Kubota, Yanmar, and Weichai. Our extensive inventory covers everything from full Engine Assemblies to precision Spare Parts. Key products in our catalog include: Cylinder Liners, Pistons, Piston Rings, Main Bearings, Con-rod Bearings, Thrust Washers, Overhaul Gasket Kits, Diesel Injection Pumps, Fuel Injectors, Crankshafts, Turbochargers, Water Pumps, Oil Pumps, Cylinder Blocks, Cylinder Heads, and Connecting Rods.

Search Term Reference: Caterpillar engine rebuild kits, Komatsu excavator engine parts, Cummins diesel generator repair, Isuzu marine engine gasket sets, Kubota tractor engine overhaul, Yanmar industrial engine seals, Weichai heavy truck engine components, C15 engine oil seal replacement, 3406B engine parts supplier, high-pressure fuel injectors, aftermarket turbochargers for construction, genuine quality cylinder heads, engine water pump wholesale, heavy duty piston ring sets, diesel engine crankshaft grinding, industrial engine gasket manufacturers, construction machinery engine maintenance, radiator cooling systems, engine oil pump efficiency, long-block engine assembly.

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