C3926631 Engine Piston Cylinder Combustion Power Piston For DFCV 4BTAA Diesel Engine Power Drive Parts
Product Details
| OEM: | CC3926631 | Vehicle Model: | 4BTAA |
|---|---|---|---|
| Specifications: | H106*h57mm | ||
| Highlight |
Engine Piston for DFCV Truck,C3926631,C3926631 Engine Piston |
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Product Description
C3926631 Piston is a core moving component built for DFCV 4BTAA diesel engine power cylinder. It transfers the thrust generated by fuel combustion to the connecting rod, converting gas expansion force into mechanical power while coordinating with piston rings to maintain cylinder sealing. This aftermarket replacement piston addresses insufficient compression, rough combustion and heavy smoke output caused by piston crown melting, skirt scuffing, ring groove deformation and thermal fatigue damage. Optimized crown profile supports stable fuel atomization and combustion, cutting fuel waste for medium trucks running frequent stop-start regional haulage and variable load delivery tasks.
Product Advantages Fabricated from high-silicon aluminum alloy with special heat treatment, delivering excellent thermal stability and lightweight feature. Reinforced ring grooves resist wear under high cylinder pressure. Precision machined skirt surface forms stable oil film and lowers reciprocating friction. Every piston undergoes weight classification and dimensional tolerance test before delivery, OEM pin bore and outer dimension for matched assembly.
| Item | Parameter |
|---|---|
| Part Number | C3926631 |
| Product Name | Piston |
| Matching Engine | DFCV 4BTAA |
| Material | High Silicon Aluminum Alloy |
| Feature | Power Transmission, High Temperature Tolerance, Anti-Scuffing, Precise Crown Profile |
| MOQ | Negotiable |
| Application | Cylinder Combustion Force Conversion and Reciprocating Power Transfer Assembly |
Applicable Models Fit for DFCV medium-duty trucks equipped with 4BTAA diesel engine, widely used for urban distribution and short-distance intercity cargo transport.




FAQ
Q1: What will happen if the piston crown suffers thermal damage?
A1: Combustion efficiency drops, engine power weakens and abnormal knocking sound appears under heavy loads.
Q2: Should I match new piston rings together with the new piston?
A2: Yes, mismatched old rings cannot fit new grooves perfectly and will trigger gas blow-by easily.
Q3: Why must we check piston clearance before installation?
A3: Improper clearance may lead to piston seizure when the engine reaches normal working temperature.
Product Highlights
C3926631 Piston is a core moving component built for DFCV 4BTAA diesel engine power cylinder. It transfers the thrust generated by fuel combustion to the connecting rod, converting gas expansion force into mechanical power while coordinating with piston rings to maintain cylinder sealing. This ...
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