5500531231 Inlet Valve Seat Insert. Listed in MTU 396 catalog references; confirm installation and current availability before ordering.
Check 5500531231 availability: Start with 5500531231 and the quantity. Add an engine serial number or a photo of the old Inlet Valve Seat Insert if available; we will follow up on any missing details.
5500531231 Specification
About 5500531231 - Inlet Valve Seat Insert
Published catalog details are identification references. They do not establish current stock, supplied condition, or confirmed fitment for your engine.
5500531231 is an inlet valve seat insert catalogued for MTU 396 engines. The catalog unit weight is 0.073 kg, which we use to estimate freight before quoting.
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
Engine Catalog References
5500531231 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 |
|---|---|---|---|---|
| 12V 396 TC54 | 12 | V | marine | build 4 |
| 12V 396 TC64 | 12 | V | marine | build 4 |
| 12V 396 TE64 | 12 | V | marine | build 4 |
| 12V 396 TE74 | 12 | V | marine | build 4 |
| 12V 396 TE74L | 12 | V | marine | build 4 |
| 12V 396 TE84 | 12 | V | — | build 4 |
| 12V 396 TE94 | 12 | V | marine | build 4 |
| 12V 396 TB94 | 12 | V | marine | build 4 |
How Each Model Code Reads
- 12V 396 TC54: 12 cylinders in V arrangement, Series 396, turbocharged, charge-air code TC, application group 5 (marine), build 4
- 12V 396 TC64: 12 cylinders in V arrangement, Series 396, turbocharged, charge-air code TC, application group 6 (marine), build 4
- 12V 396 TE64: 12 cylinders in V arrangement, Series 396, turbocharged, charge-air code TE, application group 6 (marine), build 4
- 12V 396 TE74: 12 cylinders in V arrangement, Series 396, turbocharged, charge-air code TE, application group 7 (marine), build 4
- 12V 396 TE74L: 12 cylinders in V arrangement, Series 396, turbocharged, charge-air code TE, application group 7 (marine), build 4, increased rating (L)
- 12V 396 TE84: 12 cylinders in V arrangement, Series 396, turbocharged, charge-air code TE, application group 8, build 4
- 12V 396 TE94: 12 cylinders in V arrangement, Series 396, turbocharged, charge-air code TE, application group 9 (marine), build 4
- 12V 396 TB94: 12 cylinders in V arrangement, Series 396, turbocharged, charge-air code TB, application group 9 (marine), build 4
Full parts list for this model family: MTU 12V 396 TB94 to TE94 Parts List
Engine-series references do not confirm every installation. Final fitment of 5500531231 depends on the full engine serial number and assembly position.
Usually Ordered with Inlet Valve Seat Insert
Valve work usually includes guides, seats, stem seals, and springs. These MTU 396 references are commonly checked in the same job; each still needs its own fitment check.
- 0000530126 Valve Collet
- 0000530361 Valve Stem Seal
- 0000533635 Valve Rotator
- 5500530020 Outer Valve Spring
- 5500530232 Exhaust Valve Seat Insert
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 |
|---|---|
| 5370530131 | Reference only; direction unconfirmed |
| 5500530131 | Reference only; direction unconfirmed |
| 5500530531 | Reference only; direction unconfirmed |
| 5500531831 | Reference only; direction unconfirmed |
Common Applications
- Cylinder-head overhaul
- Marine engine maintenance
- Power generation service
Information to Send for Quotation
- Part number: 5500531231
- 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.
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.
Related MTU Parts
Similar to Inlet Valve Seat Insert by engine series or category.
Other Service Parts in This Engine Series
Related MTU 396 service categories. Each item requires its own fitment check.