5240530122 inner valve spring for MTU 4000 catalog references. Confirm spring position and the listed reference X52404100108.
Check 5240530122 availability: Start with 5240530122 and the quantity. Add an engine serial number or a photo of the old Inner Valve Spring if available; we will follow up on any missing details.
5240530122 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.
5240530122 Quotation Scope
- Requested contents
- Inner valve spring; outer spring and retainer separate.
- Evidence to request
- Spring position and applicable dimensions/load specification.
- 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 5240530122 - Inner Valve Spring
Published catalog details are identification references. They do not establish current stock, supplied condition, or confirmed fitment for your engine.
5240530122 is identified as an inner valve spring. Its free length, diameter, and load characteristics are not verified in the published record. Request the applicable spring specification before choosing a substitute.
Technical Notes: Valve train
Valves, guides, seats, springs, and rocker components control gas exchange in the cylinder head. Wear in the valve train shows up as compression loss, rising exhaust temperatures, or changes in valve clearance between service intervals.
When This Type of Part Is Usually Replaced
- valve clearance changes quickly between adjustments
- compression is low on one or more cylinders
- valves or seats show burning, pitting, or recession during head overhaul
Checks Before Ordering
- Valve guides and seats are matched to the valve stem and head; order them per cylinder head
- Replace valve stem seals whenever valves are removed
- Inner and outer valve springs are usually separate part numbers
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.
- Confirm inner versus outer spring, free length, wire diameter, and required load data from the applicable valve-train drawing.
Request a datasheet or measurement check
Engine Catalog References
5240530122 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 5240530122 depends on the full engine serial number and assembly position.
Usually Ordered with Inner Valve Spring
Valve-train parts are serviced together per cylinder head. These MTU 4000 references are commonly checked in the same job; each still needs its own fitment check.
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 |
|---|---|
| X52404100108 | Reference only; direction unconfirmed |
Common Applications
- Cylinder-head overhaul
- Marine engine maintenance
- Power generation service
Information to Send for Quotation
- Exact part number: 5240530122
- Part name or assembly position: Inner Valve Spring
- Engine model / series: MTU 4000
- 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.
5240530122 FAQ
Does 5240530122 include the outer spring?
The listing identifies the inner spring only. Request the outer spring, retainer, and other items by their own references if needed.
Verification Notes
- Catalog references and engine-series listings require confirmation against the full engine serial number before order.
Related MTU Parts
Similar to Inner Valve Spring 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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