When rebuilding a heavy-duty engine, the precision of axial clearance is non-negotiable. The AP4346B (also searched as AP-4346B) thrust plate is a critical component for maintaining the crankshaft's position in high-load environments. As a professional engine parts supplier, we provide OEM-standard replacements that ensure your equipment stays in peak condition without the premium price tag of a branded box.
This specific part is engineered for the legendary Caterpillar 3400 series, including the 3406B, 3408, and 3412 models commonly found in industrial generators, marine vessels, and heavy mining machinery. Whether you are performing a routine overhaul or a complete engine rebuild, our AP4346B components offer the durability required for long-stroke, high-torque applications.
| Attribute | Details |
|---|---|
| Model NO. | AP4346B / AP-4346B |
| Product Name | Engine Thrust Plate / Thrust Washer |
| Compatible Brand | Caterpillar (CAT) |
| Compatible Engine Models | 3406, 3406B, 3406C, 3408, 3408B, 3412, 3412C |
| Payment Terms | T/T, Western Union, MoneyGram |
| Delivery Methods | Express (DHL, Fedex, EMS, UPS), Air, or Sea Freight |
| Condition | Brand New, OEM Standard Replacement |
| MOQ | 1 Piece |
| Stock Status | In Stock / Fast Global Dispatch |
| Application | Engine rebuild, major overhaul, crankshaft maintenance |
Repair shops and fleet managers worldwide trust our engine parts for their rigorous testing and material integrity. Here is a comparison of why our supply stands out in the procurement market.
| Core Purchasing Factors | Standard Aftermarket Parts | Our OEM-Standard AP4346B |
|---|---|---|
| 1. Material Composition | Basic steel alloys | OEM-standard tri-metal structure for superior heat resistance |
| 2. Precision Fit | Approximate sizing | Exact tolerance matching for CAT 3406/3408/3412 cranks |
| 3. Surface Treatment | Rough finish | Micro-polished surface to reduce friction and wear |
| 4. Availability | Often backordered | In stock for immediate air express dispatch |
| 5. Service Life | Unpredictable | Designed for full-cycle engine service intervals |
| 6. Procurement Cost | Low but risky | Competitive wholesale pricing with verified reliability |
Common signs include excessive crankshaft end play, unusual knocking sounds from the lower block, and metallic debris in the oil filter. If left unaddressed, it can lead to catastrophic block or crankshaft damage.
Yes, the AP4346B is designed to fit the 3400 series family. It is a vital part of a marine engine overhaul kit, ensuring the crankshaft remains stable under heavy propulsion loads.
Our parts feature an OEM-standard tri-metal structure. We are trusted by repair shops and equipment fleets globally for providing parts that match the original performance specifications.
Not sure how this issue affects your equipment? Our team helps operators:
Identify potential risks during maintenance
Recommend suitable replacement parts if needed
Support both inspection advice and parts supply
Get a professional quote today for your engine overhaul needs.
About Our Engine Solutions: We specialize in high-performance engine assemblies and spare parts for industry leaders including Cummins, Komatsu, Caterpillar, Isuzu, Kubota, Yanmar, and Weichai. Our inventory covers a comprehensive range of engine components: Cylinder Liners, Pistons, Piston Rings, Crankshaft Main Bearings, Connecting Rod Bearings, Thrust Washers, Full Overhaul Gasket Kits, Fuel Injection Pumps, Injectors, Crankshafts, Turbochargers, Water Pumps, Oil Pumps, Cylinder Blocks, Cylinder Heads, and Connecting Rods.
Search Tags: Caterpillar 3406B overhaul kit, CAT 3408 rebuild parts, 3412 marine engine maintenance, Komatsu excavator engine components, Cummins diesel engine spare parts, Isuzu industrial engine liners, Kubota tractor engine pistons, Yanmar marine diesel gaskets, Weichai truck engine turbochargers, Heavy-duty crankshaft bearings, Diesel fuel system repair, Engine oil pump replacement, Cylinder head assembly for CAT, Connecting rod wholesale, Aftermarket engine parts supplier, OEM standard thrust plates, High-torque engine rebuild, Industrial generator engine repair, Mining equipment engine service, Global shipping engine parts.
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