4420302240 Main Bearing. Listed in MTU 183 catalog references; confirm installation and current availability before ordering.
Check 4420302240 availability: Start with 4420302240 and the quantity. Add an engine serial number or a photo of the old Main Bearing if available; we will follow up on any missing details.
4420302240 Specification
About 4420302240 - Main Bearing
Published catalog details are identification references. They do not establish current stock, supplied condition, or confirmed fitment for your engine.
4420302240 is a main bearing catalogued for MTU 183 engines. The catalog unit weight is 0.370 kg, which we use to estimate freight before quoting.
Technical Notes: Bearings
Main and connecting-rod bearings support the crankshaft and run on a thin oil film. MTU bearings are supplied in size grades to suit original and reground crankshafts, so the size marked on the old shells or on the crankshaft record has to be known before ordering.
When This Type of Part Is Usually Replaced
- the engine reaches its major-overhaul interval
- oil analysis or filter inspection shows bearing material
- oil pressure loss or knocking points to bearing wear
Checks Before Ordering
- Confirm the size grade (for example size 0 or an undersize) from the old shells or crankshaft measurements
- Replace bearings as complete sets per crankshaft journal type
- Thrust bearings and washers should be checked together with the main bearings
Engine Catalog References
4420302240 is listed for 8 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 |
|---|---|---|---|---|
| 8V 183 TE52 | 8 | V | marine | build 2 |
| 8V 183 AA51 | 8 | V | marine | build 1 |
| 6R 183 TD13H | 6 | In-line | — | build 3 |
| 12V 183 TE93 | 12 | V | marine | build 3 |
| 12V 183 TE52 | 12 | V | marine | build 2 |
| 12V 183 TD13 | 12 | V | — | build 3 |
| 12V 183 TB32 | 12 | V | generator sets | build 2 |
| 12V 183 TA12 | 12 | V | — | build 2 |
How Each Model Code Reads
- 8V 183 TE52: 8 cylinders in V arrangement, Series 183, turbocharged, charge-air code TE, application group 5 (marine), build 2
- 8V 183 AA51: 8 cylinders in V arrangement, Series 183, charging and cooling code AA, application group 5 (marine), build 1
- 6R 183 TD13H: 6 cylinders in line, Series 183, turbocharged, charge-air code TD, application group 1, build 3, rating variant H
- 12V 183 TE93: 12 cylinders in V arrangement, Series 183, turbocharged, charge-air code TE, application group 9 (marine), build 3
- 12V 183 TE52: 12 cylinders in V arrangement, Series 183, turbocharged, charge-air code TE, application group 5 (marine), build 2
- 12V 183 TD13: 12 cylinders in V arrangement, Series 183, turbocharged, charge-air code TD, application group 1, build 3
- 12V 183 TB32: 12 cylinders in V arrangement, Series 183, turbocharged, charge-air code TB, application group 3 (generator sets), build 2
- 12V 183 TA12: 12 cylinders in V arrangement, Series 183, turbocharged, charge-air code TA, application group 1, build 2
Full parts list for this model family: MTU 183 AA51 to TE93 Parts List
Engine-series references do not confirm every installation. Final fitment of 4420302240 depends on the full engine serial number and assembly position.
Common Replacement Scenarios
This part is commonly replaced when:
- bearing clearance, surface scoring, or abnormal crankshaft/camshaft wear is found during overhaul
- standard or size-grade selection must be confirmed before shipment
- buyers need matched bearing references for the same overhaul kit
Cross-Reference and Superseded Part Numbers
Catalog history distinguishes earlier and later numbers where documented. Reference-only entries do not establish replacement direction or interchangeability. Confirm the offered number against the engine serial number and installation.
| Part number | Catalog relationship |
|---|---|
| 4420330802 | Reference only; direction unconfirmed |
| 4420331502 | Reference only; direction unconfirmed |
| 4420330101 | Reference only; direction unconfirmed |
| 4030331401 | Reference only; direction unconfirmed |
| 4420300140 | Reference only; direction unconfirmed |
Common Applications
- Engine overhaul
- Crankshaft service
- Marine and industrial engines
Information to Send for Quotation
- Exact part number: 4420302240
- Part name or assembly position: Main Bearing
- Engine model / series: MTU 183
- 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 4420302240, 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.
4420302240 FAQ
Does 4420302240 fit MTU 183?
4420302240 Main Bearing is checked against MTU 183. Final fitment depends on the engine serial number, rating, and installation position.
What information is needed to quote 4420302240?
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 4420302240?
4420302240 may relate to 4420330802, 4420331502, 4420330101, 4030331401, 4420300140. Final replacement status is checked against the engine serial number before quote.
When is 4420302240 usually replaced?
bearing clearance, surface scoring, or abnormal crankshaft/camshaft wear is found during overhaul; standard or size-grade selection must be confirmed before shipment; buyers need matched bearing references for the same overhaul kit.
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 Main Bearing by engine series or category.
Other Service Parts in This Engine Series
Related MTU 183 service categories. Each item requires its own fitment check.