X52420300037 MTU 4000 thermal actuator. Catalog earlier references include 0662030073, 0052031575, and 0052035175.
Check X52420300037 availability: Start with X52420300037 and the quantity. Add an engine serial number or a photo of the old Thermal Actuator if available; we will follow up on any missing details.
X52420300037 Specification
Supply & Availability
- Stock
- Availability confirmed after inquiry
- Lead time
- Stock or sourcing route confirmed after inquiry
Availability is confirmed for each quotation and may change before order release.
X52420300037 Quotation Scope
- Requested contents
- Thermal actuator only; housing and mating seals separate.
- Evidence to request
- Position 200, housing interface and meaning of catalog operating marking.
- Supplier confirmation
- Current stock, exact supplied condition and unit-specific documents are not confirmed by this catalog record. Request them with the quotation.
- Quote acceptance
- Offered number, quantity, included items, condition, price, lead time and delivery terms must be agreed before order release.
About X52420300037 - Thermal Actuator
Published catalog details are identification references. They do not establish current stock, supplied condition, or confirmed fitment for your engine.
The catalog marking for X52420300037 includes 38 degrees and an FKM reference. This is not enough to establish a complete operating curve or installation geometry. Match the old actuator, its housing position, and the engine serial number before replacement.
Technical Notes: Sensors and electrical
Pressure, temperature, speed, and level sensors feed the engine governor and safety system. A faulty sensor can trigger alarms, power reduction, or a shutdown even when the engine itself is healthy, which is why sensors are among the most frequently ordered emergency parts.
Series 4000 engines rely on an electronic engine governor, so sensor faults are logged and can lead to power reduction. Fault codes help narrow down which sensor to order.
When This Type of Part Is Usually Replaced
- a sensor reading is implausible compared with a test gauge or neighbouring engines
- an alarm or shutdown is logged but the measured value is normal
- connector damage, corrosion, or broken wiring is found at the sensor
Checks Before Ordering
- Thread type, connector style, and measuring range must match; similar-looking sensors are often not interchangeable
- Newer replacement numbers may require a different connector or cable, which should be confirmed before ordering
- Check the wiring and connector before replacing the sensor itself
Technical Data Status
Published catalog details help identify this part, but they are not a controlled drawing for the item offered. Measurements that are not shown here still need confirmation before substitution or order.
- Catalog marking: 38 degrees / 2.363 FKM MTL5076. Confirm the meaning, travel, housing interface, and operating specification with the offered unit.
Request a datasheet or measurement check
Engine Catalog References
X52420300037 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 X52420300037 depends on the full engine serial number and assembly position.
Usually Ordered with Thermal Actuator
Thermostat elements are replaced with their housing seals. These MTU 4000 references are commonly checked in the same job; each still needs its own fitment check.
- 0000160119 Sealing Ring
- 0299976748 O-Ring
- 23540304/A1 Gasket Kit
- 5240111380 Gasket
- X52404200037 Gasket for Cylinder Head
- X52405500190 Profile Gasket for Cylinder
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 |
|---|---|
| 0662030073 | Listed earlier number |
| 0052031575 | Listed earlier number |
| 0052035175 | Listed earlier number |
Parts in the Same Catalog Drawing
MTU 4000 thermostat-housing reference. Drawing positions are identification references, not a confirmed kit or a list of items included with this part. Check the engine serial number and drawing revision before ordering.
| Position | Part number | Description |
|---|---|---|
| 250 | 05132155 | Sealing Ring |
| 550 | 700429072000 | O-Ring |
| 1350 | 5272030080 | Gasket |
| 1550 | 700429070000 | O-Ring |
All assembly group on this page are collected in the assembly & BOM reference index.
Common Applications
- Engine monitoring systems
- Control panels
- Retrofit and upgrade projects
Information to Send for Quotation
- Part number: X52420300037
- 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.
X52420300037 FAQ
Is X52420300037 a complete thermostat assembly?
The listing describes a thermal actuator. Housing, seals, and other thermostat components need their own identification and quotation.
Is 0662030073 replaced by X52420300037?
Catalog history lists X52420300037 as the later number for 0662030073, 0052031575, 0052035175. Orders quoting those numbers are normally supplied as X52420300037; we confirm the change against the engine serial number, because a later number can come with related changes to mating parts.
Verification Notes
- Catalog references and engine-series listings require confirmation against the full engine serial number before order.
Related MTU Parts
Similar to Thermal Actuator by engine series or category.
Other Service Parts in This Engine Series
Related MTU 4000 service categories. Each item requires its own fitment check.
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