X52421300004 Alternator. Listed in MTU 4000 catalog references; confirm installation and current availability before ordering.
Check X52421300004 availability: Start with X52421300004 and the quantity. Add an engine serial number or a photo of the old Alternator if available; we will follow up on any missing details.
X52421300004 Specification
About X52421300004 - Alternator
Published catalog details are identification references. They do not establish current stock, supplied condition, or confirmed fitment for your engine.
X52421300004 is an alternator catalogued for MTU 4000 engines. Catalog history lists EX52421300029 as its later number; we check whether the later part can be fitted alone or needs related parts changed with it. The catalog unit weight is 15.650 kg, which we use to estimate freight before quoting.
Technical Notes: Starting and charging
Starters, alternators, and charging generators are installation-specific electrical assemblies. Units that look alike can differ in system voltage, rotation direction, mounting flange, pinion or pulley arrangement, terminal position, output rating, and environmental protection. A visually similar unit should never be treated as interchangeable on appearance alone.
When This Type of Part Is Usually Replaced
- the unit fails bench testing, or produces an abnormal noise or smell under load
- charging output is low or unstable at rated engine speed
- the starter drags, clicks, or engages intermittently
Checks Before Ordering
- Send the complete unit label and the engine model and serial number
- Confirm voltage, rotation, mounting flange, pinion or pulley arrangement, and terminal layout
- Photograph the connector and pulley end when the label is worn or missing
Engine Catalog References
X52421300004 is listed for 12 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 4000 R43 | 8 | V | rail | subgroup 4, build 3 |
| 8V 4000 R43L | 8 | V | rail | subgroup 4, build 3 |
| 12V 4000 R43 | 12 | V | rail | subgroup 4, build 3 |
| 12V 4000 R43L | 12 | V | rail | subgroup 4, build 3 |
| 16V 4000 R43R | 16 | V | rail | subgroup 4, build 3 |
| 16V 4000 R43 | 16 | V | rail | subgroup 4, build 3 |
| 16V 4000 R43L | 16 | V | rail | subgroup 4, build 3 |
| 20V 4000 R43 | 20 | V | rail | subgroup 4, build 3 |
| 20V 4000 R43L | 20 | V | rail | subgroup 4, build 3 |
| 20V 4000 R63R | 20 | V | rail | subgroup 6, build 3 |
| 20V 4000 R63 | 20 | V | rail | subgroup 6, build 3 |
| 20V 4000 R63L | 20 | V | rail | subgroup 6, build 3 |
How Each Model Code Reads
- 8V 4000 R43: 8 cylinders in V arrangement, Series 4000, rail application (R), subgroup 4, build generation 3
- 8V 4000 R43L: 8 cylinders in V arrangement, Series 4000, rail application (R), subgroup 4, build generation 3, increased rating (L)
- 12V 4000 R43: 12 cylinders in V arrangement, Series 4000, rail application (R), subgroup 4, build generation 3
- 12V 4000 R43L: 12 cylinders in V arrangement, Series 4000, rail application (R), subgroup 4, build generation 3, increased rating (L)
- 16V 4000 R43R: 16 cylinders in V arrangement, Series 4000, rail application (R), subgroup 4, build generation 3, rating variant R
- 16V 4000 R43: 16 cylinders in V arrangement, Series 4000, rail application (R), subgroup 4, build generation 3
- 16V 4000 R43L: 16 cylinders in V arrangement, Series 4000, rail application (R), subgroup 4, build generation 3, increased rating (L)
- 20V 4000 R43: 20 cylinders in V arrangement, Series 4000, rail application (R), subgroup 4, build generation 3
- 20V 4000 R43L: 20 cylinders in V arrangement, Series 4000, rail application (R), subgroup 4, build generation 3, increased rating (L)
- 20V 4000 R63R: 20 cylinders in V arrangement, Series 4000, rail application (R), subgroup 6, build generation 3, rating variant R
- 20V 4000 R63: 20 cylinders in V arrangement, Series 4000, rail application (R), subgroup 6, build generation 3
- 20V 4000 R63L: 20 cylinders in V arrangement, Series 4000, rail application (R), subgroup 6, build generation 3, increased rating (L)
Full parts list for this model family: MTU 4000 R43 to R63R Parts List
Engine-series references do not confirm every installation. Final fitment of X52421300004 depends on the full engine serial number and assembly position.
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 |
|---|---|
| EX52421300029 | Listed later number |
| E0001500250 | Reference only; direction unconfirmed |
| 0001500250 | Reference only; direction unconfirmed |
| E0001501150 | Reference only; direction unconfirmed |
| 0001501150 | Reference only; direction unconfirmed |
| EX52421300004 | Reference only; direction unconfirmed |
| X52421300029 | Reference only; direction unconfirmed |
| X52421300029/Q01 | Reference only; direction unconfirmed |
Common Applications
- Marine service
- Industrial maintenance
- Power generation
- Rail traction
Information to Send for Quotation
- Part number: X52421300004
- Engine model, rating, and serial number
- Nameplate photo and old part photo when available
- Quantity, destination country, and required delivery date
The quotation confirms the offered part number, supply condition, price, lead time, and shipping options.
X52421300004 FAQ
What replaces X52421300004?
Catalog history lists EX52421300029 as the later number. We check whether EX52421300029 can be fitted on its own or needs related parts changed, and quote X52421300004 where it is still available and preferred.
Verification Notes
- For X52421300004, confirm engine model, serial number, required quantity, and destination before ordering.
- If X52421300004 markings or replacement status are unclear, send old-part photos or nameplate details.
Related MTU Parts
Similar to Alternator by engine series or category.
Other Service Parts in This Engine Series
Related MTU 4000 service categories. Each item requires its own fitment check.
Browse More MTU Parts
All MTU part numbers / MTU spare parts / MTU 4000 Series Overhaul Parts Guide / Check this part