MAN Piston 51025006116
Exploded view. Numbers match the components list below.
- Manufacturer
- MAN
- Also written as
- 51.02500-6116, 51.02500.6116
- Description
- Stationary engine piston 128.00 mm
- Engine model
- MAN D2842 LE6.., MAN D2842 LE620and 3 more
- Weight
- 3.67 kg
- Country of origin
- Germany
- Condition
- New
About this part
Genuine MAN piston for the D2842, the 21.9-litre V12. Piston-to-bore clearance is what separates a quiet engine from a knocking one. As the skirt wears, the piston is free to rock slightly at the top and bottom of each stroke, and the resulting contact with the bore is the metallic knock known as piston slap — loudest when the engine is cold, fading as components expand to working temperature, which is the clue that distinguishes it from a bearing knock. The measurement that confirms it is taken with the piston out, comparing skirt diameter against the bore at right angles to the pin. Judge it on figures; the noise it makes will mislead. Cold-start knock that persists once the engine is warm is a different fault and worth pursuing separately.
Supplied new, in the manufacturer’s packaging, with our warranty of up to 24 months.
Engines this part fits
Components of this assembly
| Pos. | Part number | Name | Qty |
|---|---|---|---|
| 1 | 51025006116 | stationary engine piston 128,00 MM normal | 12 |
| 1 | 51025006184 | stationary engine piston assembly undersize 0,20 mm 128,00 MM | 12 |
| 1 | 51025006185 | stationary engine piston assembly undersize 0,40 mm 128,00 MM | 12 |
| 2 | 51025030752 | keystone ring | 12 |
| 2 | 51025030811 | keystone ring | 12 |
| 3 | 51025030784 | taper face compression ring | 12 |
| 4 | 51025030806 | bevelled oil scraper ring | 12 |
| 5 | 51025020107 | piston pin | 12 |
| 6 | 51908100035 | snap ring 50,5X2-FST | 24 |
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Where available, we quote OEM-supplier or aftermarket alternatives separately, with price, lead time and warranty shown before you order.
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