Reliable engine operation starts with precision internal components. If you are searching for 384-3888 or 3843888, you have found the professional source for industrial-grade engine bearings. This specific big-end bearing is engineered for high-pressure environments in CAT and Perkins-based power systems, ensuring your equipment stays in the field and out of the repair shop.
| Model NO. | Caterpillar C4.4, C6.6, C7.1, Perkins 1104, 1106 Series |
| Product Name | Connecting Rod Bearing / Big End Bearing |
| Part Number | 384-3888 (Alternate: 3843888) |
| Type | Diesel Engine Internal Components |
| Condition | Brand New, OEM Standard Replacement |
| MOQ | 1 Piece |
| Payment Terms | T/T, Western Union, MoneyGram |
| Delivery Methods | Express (DHL, Fedex, EMS, UPS), Air Freight, Sea Freight |
| Stock Status | In Stock / Fast Dispatch Globally |
| Application | Engine Rebuild, Overhaul, Routine Maintenance |
Selecting the right bearing is the difference between a successful overhaul and a catastrophic engine failure. Here is how our solution compares to standard aftermarket options:
| Core Procurement Points | Our OEM-Standard Replacement | Low-Quality Alternatives |
|---|---|---|
| Material Composition | Tri-metal high-strength alloy for extreme loads | Single-layer soft metals prone to heat fatigue |
| Precision Fit | Exact 384-3888 tolerance matching for CAT C4.4/C6.6 | Loose tolerances causing oil pressure drops |
| Durability | Tested for 10,000+ operating hours | Frequent early wear and crankshaft damage |
| Heat Resistance | Advanced thermal coating for heavy-duty cooling | Rapid degradation under peak engine temperatures |
| Anti-Friction Surface | Micro-finished surface reduces startup wear | Rough finish causing metal-to-metal contact |
| Supply Reliability | Ready to ship from stock with factory warranty | Long lead times and zero technical support |
Not sure how this issue affects your equipment? Our team helps operators:
Identify potential risks during maintenance cycles
Recommend suitable replacement parts if needed
Support both inspection advice and parts supply for C6.6 engines
If you notice copper flakes in your oil filter or hear a rhythmic knocking sound from the engine block, your 384-3888 bearings likely need immediate replacement to save the crankshaft.
Click below to get a fast quote or speak with an engine specialist via WhatsApp or Facebook.
WhatsApp: +86 135 3237 9052 Email: [email protected] Visit Our FacebookAnswer: This is often caused by excessive clearance in the connecting rod bearings. When the 384-3888 bearing wears down, oil escapes too easily from the sides, dropping system pressure. We recommend a full bearing inspection during your next service.
Answer: Yes. The 384-3888 is a cross-compatible part used in many Tier 3 and Stage IIIA engines manufactured by both brands. Always verify the serial number before installation.
Answer: Our 384-3888 features an OEM-standard tri-metal structure designed to handle the high torque of modern diesel engines. It is trusted by repair shops and equipment fleets for its longevity and perfect fitment.
We are a premier global supplier of heavy-duty engine solutions, specializing in Cummins, Komatsu, Caterpillar, Isuzu, Kubota, Yanmar, and Weichai diesel engines. Our core inventory includes complete engine assemblies and high-precision components such as cylinder liners, pistons, piston rings, crankshaft 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.
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