5840371625 Piston Crown. Listed in MTU 956, MTU 1163 catalog references; confirm installation and current availability before ordering.
Check 5840371625 availability: Start with 5840371625 and the quantity. Add an engine serial number or a photo of the old Piston Crown if available; we will follow up on any missing details.
5840371625 Specification
About 5840371625 - Piston Crown
Published catalog details are identification references. They do not establish current stock, supplied condition, or confirmed fitment for your engine.
5840371625 is a piston crown catalogued for MTU 956 and MTU 1163 engines. The catalog unit weight is 7.620 kg, which we use to estimate freight before quoting.
Technical Notes: Pistons and liners
Pistons, rings, and wet cylinder liners form the combustion chamber and carry the highest thermal loads in the engine. They are usually replaced during a major overhaul, and liner protrusion and size grades have to be checked so the cylinder head seals correctly.
When This Type of Part Is Usually Replaced
- oil consumption or blow-by rises beyond the expected level
- borescope inspection shows liner scoring, bore polishing, or ring damage
- liner cavitation is found on the coolant side
Checks Before Ordering
- Order liners with their sealing rings, and pistons with complete ring sets
- Size grades and weight classes must be matched within one engine
- Measurements from the inspection record decide which grade to order
Engine Catalog References
5840371625 is listed for 10 engine models in the catalog references. The specification table decodes each model code from the fitment list; it does not confirm every installation.
| Model | Cylinders | Arrangement | Application | Group / build |
|---|---|---|---|---|
| 16V 1163 TB73L | 16 | V | marine | build 3 |
| 20V 1163 TB73 | 20 | V | marine | build 3 |
| 20V 1163 TB73L | 20 | V | marine | build 3 |
| 12V 1163 TB93 | 12 | V | marine | build 3 |
| 16V 1163 TB93 | 16 | V | marine | build 3 |
| 20V 1163 TB93 | 20 | V | marine | build 3 |
| 16V 1163 TB76 | 16 | V | marine | build 6 |
| 16V 1163 TB76L | 16 | V | marine | build 6 |
| 16V 1163 TB82 | 16 | V | — | build 2 |
| 20V 1163 TB82 | 20 | V | — | build 2 |
How Each Model Code Reads
- 16V 1163 TB73L: 16 cylinders in V arrangement, Series 1163, turbocharged, charge-air code TB, application group 7 (marine), build 3, increased rating (L)
- 20V 1163 TB73: 20 cylinders in V arrangement, Series 1163, turbocharged, charge-air code TB, application group 7 (marine), build 3
- 20V 1163 TB73L: 20 cylinders in V arrangement, Series 1163, turbocharged, charge-air code TB, application group 7 (marine), build 3, increased rating (L)
- 12V 1163 TB93: 12 cylinders in V arrangement, Series 1163, turbocharged, charge-air code TB, application group 9 (marine), build 3
- 16V 1163 TB93: 16 cylinders in V arrangement, Series 1163, turbocharged, charge-air code TB, application group 9 (marine), build 3
- 20V 1163 TB93: 20 cylinders in V arrangement, Series 1163, turbocharged, charge-air code TB, application group 9 (marine), build 3
- 16V 1163 TB76: 16 cylinders in V arrangement, Series 1163, turbocharged, charge-air code TB, application group 7 (marine), build 6
- 16V 1163 TB76L: 16 cylinders in V arrangement, Series 1163, turbocharged, charge-air code TB, application group 7 (marine), build 6, increased rating (L)
- 16V 1163 TB82: 16 cylinders in V arrangement, Series 1163, turbocharged, charge-air code TB, application group 8, build 2
- 20V 1163 TB82: 20 cylinders in V arrangement, Series 1163, turbocharged, charge-air code TB, application group 8, build 2
Full parts list for this model family: MTU 1163 TB73 to TB93 Parts List
Engine-series references do not confirm every installation. Final fitment of 5840371625 depends on the full engine serial number and assembly position.
Common Replacement Scenarios
This part is commonly replaced when:
- compression loss, liner scoring, high blow-by, or oil consumption is reported
- size grade and matched cylinder components must be confirmed for the overhaul scope
- a major overhaul list needs piston, ring, liner, and bearing references checked together
Usually Ordered with Piston Crown
Pistons are fitted with new ring sets and checked against the liner and piston pin. These MTU 956, MTU 1163 references are commonly checked in the same job; each still needs its own fitment check.
Cross-Reference and Superseded Part Numbers
5840371625 has no public alternative number listed in our current data. We still check old-part photos, engine serial number, and catalog position for supersession before quotation.
Common Applications
- Major overhaul
- In-frame rebuild
- Marine engine service
- Industrial engine repair
Information to Send for Quotation
- Exact part number: 5840371625
- Part name or assembly position: Piston Crown
- Engine model / series: MTU 956, MTU 1163
- Engine serial number from nameplate
- Old-part photo showing number, connector, port, or size marking
- Required quantity and whether partial shipment is acceptable
- Destination country, delivery deadline, and preferred shipping method
The quotation confirms the offered part number, supply condition, price, lead time, and shipping options.
Ordering Notes
For 5840371625, send the engine model, serial number, quantity, old-part photo, and destination country. We will confirm whether the item is OEM, OEM-alternative, reman, or superseded before quotation.
5840371625 FAQ
Does 5840371625 fit MTU 956, MTU 1163?
5840371625 Piston Crown is checked against MTU 956, MTU 1163. Final fitment depends on the engine serial number, rating, and installation position.
What information is needed to quote 5840371625?
Send the part number, engine model, engine serial number, old-part photo, quantity, destination country, and required delivery date. This lets us confirm stock route, packing, and shipping options.
Can you check alternatives or superseded numbers for 5840371625?
5840371625 is checked for supersession before quote. If there is a newer or reman route, we confirm it with the engine serial number and old-part photo.
When is 5840371625 usually replaced?
compression loss, liner scoring, high blow-by, or oil consumption is reported; size grade and matched cylinder components must be confirmed for the overhaul scope; a major overhaul list needs piston, ring, liner, and bearing references checked together.
Verification Notes
- Confirm engine model, serial number, required quantity, and destination before ordering.
- Send old part photos or nameplate details when markings or replacement status are unclear.
- Priority item: part number, supersession, and export packing details are checked before quote.
Related MTU Parts
Similar to Piston Crown by engine series or category.
Other Service Parts in This Engine Series
Related MTU 956, MTU 1163 service categories. Each item requires its own fitment check.