High-grade aluminum alloy Piston Assembly with Alfin construction and 108mm bore diameter for Mitsubishi 4D33
| Compression Height: | 62.20 Mm | Material: | High-grade Aluminum Alloy |
| Cylinder Diameter: | Ø108.00 Mm | Overall Height: | 112.20 Mm |
| Piston Pin Length: | 84.00 Mm | Combustion Chamber Depth: | 54.5 Mm |
| Piston Pin Diameter: | 34.00 Mm | Weight: | Approx. 1.5 Kg |
| High Light: | Mitsubishi 4D33 piston assembly,aluminum alloy piston with Alfin,108mm bore diameter piston |
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The Piston Assembly with OEM reference number ME016895 is a verified direct-fit replacement for the Mitsubishi 4D33 3.9L diesel engine, widely used in Mitsubishi Fuso Canter trucks and various commercial vehicles. This piston is a critical component of the engine's combustion system, responsible for transferring the force of expanding combustion gases to the connecting rod and crankshaft.
The 4D33 engine is a 3.9L four-cylinder diesel engine renowned for its durability and reliability in light- and medium-duty commercial applications. This OE-spec replacement piston features Alfin construction with a tinned steel insert at the ring groove area for superior wear resistance and extended service life.
A worn or damaged piston can lead to loss of compression, excessive oil consumption, blow-by, knocking noises, and reduced engine performance. This OEM-grade replacement piston restores factory compression and combustion efficiency, ensuring reliable engine operation.
| Part Number: | ME016895 | Product Name: | Piston |
| Car Model: | Mitsubishi | Engine Model: | Mitsubishi 4D33 |
| Condition: | 100% Brand New | Size: | Standard |
| Weight: | Standard | Origin: | China Mainland |
| Main Market: | Middle East, Asia, Africa, South America, North America & Europe | ||
| Package: | Neutral Packing Or Make It As Requested | ||
| Material: | High-strength aluminum alloy & precision bearings | ||
| Cooling Type: | Engine coolant circulation | ||
| Installation: | Direct OEM replacement | ||
| Quality Standard: | OEM equivalent / ISO quality control | ||
| Brand | Model | Engine | Notes |
|---|---|---|---|
| Mitsubishi Fuso | Canter | 4D33 3.9L | Light/medium-duty trucks |
| Mitsubishi Fuso | Canter | 4D33T | Turbo variant |
| Mitsubishi | Various Commercial Vehicles | 4D33 | Buses, trucks, construction machinery |
- 4D33 -- 3.9L, 4-cylinder, diesel engine
- 4D33T -- Turbocharged variant
- Production period: Commonly found in 1990s - 2000s Mitsubishi Fuso Canter models
| Feature | Benefit |
|---|---|
| Alfin construction with tinned steel insert | Superior ring groove wear resistance -- extends piston service life under high-temperature, high-load diesel engine operation |
| Precision-engineered 108mm bore diameter | Matches factory specifications for Mitsubishi 4D33 engine -- restores proper compression and combustion efficiency |
| High-grade aluminum alloy construction | Excellent strength, heat resistance, and wear resistance -- withstands extreme engine temperatures and pressures |
| Optimized combustion chamber design (54.5mm depth) | Ensures proper fuel atomization and combustion efficiency -- maximizes power output and fuel economy |
| Precision-machined ring grooves | 3.00mm / 2.00mm / 4.00mm ring groove configuration -- ensures proper ring seating and sealing |
| 34mm piston pin with 84mm length | Factory-correct pin specification -- ensures proper connecting rod fitment |
| Direct OE replacement | No modifications required -- matches factory specifications precisely |
| 100% quality inspected | Reliable out of the box -- each unit verified for dimensional accuracy and material integrity |
| QC Item | Verification Method |
|---|---|
| Dimensional accuracy | Precision measurement against OE blueprint -- critical dimensions: 108mm bore, 112.2mm height, 62.2mm compression height |
| Material composition | High-grade aluminum alloy verification -- ensures proper heat and wear resistance |
| Ring groove precision | 3.00 / 2.00 / 4.00 mm groove verification -- ensures proper ring seating |
| Pin bore accuracy | 34.00mm diameter verification -- ensures proper pin fitment |
| Surface treatment | Tinned Alfin steel verification -- ensures ring groove durability |
| Hardness testing | Comprehensive material integrity testing -- documented in test report |
| Batch traceability | Each production batch documented with quality certificates |
- Loss of compression or reduced engine power
- Excessive oil consumption or blue smoke from exhaust
- Blow-by (excessive crankcase pressure)
- Knocking or unusual engine noises
- During complete engine overhaul or rebuild
- Visible piston damage (scoring, cracks, or ring groove wear)
- Safety first -- allow engine to cool completely before starting work
- Drain engine oil and coolant
- Remove the cylinder head and oil pan
- Remove the connecting rod caps and push pistons out from the top
- Inspect the cylinder bores for wear, scoring, or damage
- Measure the cylinder bore to verify proper piston-to-bore clearance
- Compare the new piston with the old unit -- verify part number (ME016895) and dimensions (108mm bore, 112.2mm height) match
- Install new piston rings (sold separately) -- ensure proper ring gap and orientation
- Lubricate the piston and cylinder bore with clean engine oil
- Install the piston with a ring compressor -- ensure correct orientation (notch or arrow toward front of engine)
- Connect the connecting rod to the crankshaft and torque bolts to manufacturer specification
- Reassemble all components, refill with fresh oil and coolant
- Start engine and perform break-in procedure
- Always replace piston rings when replacing pistons (ME996378 or equivalent)
- Have the cylinder bores measured and honed if necessary
- Use only high-quality engine oil and filters to protect new pistons
- Follow the manufacturer's break-in procedure for new pistons and rings
- This piston is also available as part of a complete liner kit including pistons, piston rings, and cylinder liners
- Individually sealed in protective packaging
- Available as single piston or as a complete set of 4
- Packed in neutral packaging or carton
- Single unit weight: Approx. 1.5 kg
- Set weight (4 pieces): Approx. 7.2 kg
- Bulk wholesale available in master cartons
- Suitable for: Mitsubishi specialist repair shops, commercial vehicle maintenance depots, engine rebuilders, auto parts distributors
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