8490740063 Flange. Listed in MTU 956, MTU 1163 catalog references; confirm installation and current availability before ordering.
Check 8490740063 availability: Start with 8490740063 and the quantity. Add an engine serial number or a photo of the old Flange if available; we will follow up on any missing details.
8490740063 Specification
About 8490740063 - Flange
Published catalog details are identification references. They do not establish current stock, supplied condition, or confirmed fitment for your engine.
8490740063 is a flange catalogued for MTU 956 and MTU 1163 engines. It is the later number for 3413373635, so lists quoting that number are normally supplied as 8490740063. The catalog unit weight is 3.086 kg, which we use to estimate freight before quoting.
Technical Notes: Cooling system
The cooling system removes heat from the cylinder liners, cylinder heads, lube oil, and charge air. Marine MTU engines usually combine an engine coolant circuit with a seawater circuit through heat exchangers, while generator engines often use radiators. Coolant quality has a direct effect on liner cavitation and pump seal life.
When This Type of Part Is Usually Replaced
- coolant leaks from the pump weep hole indicate seal wear
- engine temperature rises under load or fluctuates, pointing to thermostats or flow problems
- seawater pump impellers show cracked or missing vanes at inspection
Checks Before Ordering
- Replace thermostats and their seals together, and check the opening temperature on the replacement
- Seawater pump impellers should be kept as onboard spares for marine engines
- Flush and refill with an approved coolant after replacing pumps or heat-exchanger parts
Engine Catalog References
8490740063 is listed for 10 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 |
|---|---|---|---|---|
| 16V 1163 TB73L | 16 | V | marine | build 3 |
| 20V 1163 TB73 | 20 | V | marine | build 3 |
| 20V 1163 TB73L | 20 | V | marine | build 3 |
| 12V 1163 TB93 | 12 | V | marine | build 3 |
| 16V 1163 TB93 | 16 | V | marine | build 3 |
| 20V 1163 TB93 | 20 | V | marine | build 3 |
| 16V 1163 TB76 | 16 | V | marine | build 6 |
| 16V 1163 TB76L | 16 | V | marine | build 6 |
| 16V 1163 TB82 | 16 | V | — | build 2 |
| 20V 1163 TB82 | 20 | V | — | build 2 |
How Each Model Code Reads
- 16V 1163 TB73L: 16 cylinders in V arrangement, Series 1163, turbocharged, charge-air code TB, application group 7 (marine), build 3, increased rating (L)
- 20V 1163 TB73: 20 cylinders in V arrangement, Series 1163, turbocharged, charge-air code TB, application group 7 (marine), build 3
- 20V 1163 TB73L: 20 cylinders in V arrangement, Series 1163, turbocharged, charge-air code TB, application group 7 (marine), build 3, increased rating (L)
- 12V 1163 TB93: 12 cylinders in V arrangement, Series 1163, turbocharged, charge-air code TB, application group 9 (marine), build 3
- 16V 1163 TB93: 16 cylinders in V arrangement, Series 1163, turbocharged, charge-air code TB, application group 9 (marine), build 3
- 20V 1163 TB93: 20 cylinders in V arrangement, Series 1163, turbocharged, charge-air code TB, application group 9 (marine), build 3
- 16V 1163 TB76: 16 cylinders in V arrangement, Series 1163, turbocharged, charge-air code TB, application group 7 (marine), build 6
- 16V 1163 TB76L: 16 cylinders in V arrangement, Series 1163, turbocharged, charge-air code TB, application group 7 (marine), build 6, increased rating (L)
- 16V 1163 TB82: 16 cylinders in V arrangement, Series 1163, turbocharged, charge-air code TB, application group 8, build 2
- 20V 1163 TB82: 20 cylinders in V arrangement, Series 1163, turbocharged, charge-air code TB, application group 8, build 2
Full parts list for this model family: MTU 1163 TB73 to TB93 Parts List
Engine-series references do not confirm every installation. Final fitment of 8490740063 depends on the full engine serial number and assembly position.
Common Replacement Scenarios
This part is commonly replaced when:
- coolant temperature is high, seawater flow is weak, or pump wear is visible
- pump, impeller, flange, or cooler parts are needed for scheduled maintenance
- marine and generator installations require the correct cooling-system variant
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 |
|---|---|
| 3413373635 | Listed earlier number |
Common Applications
- Marine cooling systems
- Industrial radiator systems
- Generator cooling
Information to Send for Quotation
- Exact part number: 8490740063
- Part name or assembly position: Flange
- Engine model / series: MTU 956, MTU 1163
- 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 8490740063, 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.
8490740063 FAQ
Does 8490740063 fit MTU 956, MTU 1163?
8490740063 Flange is checked against MTU 956, MTU 1163. Final fitment depends on the engine serial number, rating, and installation position.
What information is needed to quote 8490740063?
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 8490740063?
8490740063 may relate to 3413373635. Final replacement status is checked against the engine serial number before quote.
When is 8490740063 usually replaced?
coolant temperature is high, seawater flow is weak, or pump wear is visible; pump, impeller, flange, or cooler parts are needed for scheduled maintenance; marine and generator installations require the correct cooling-system variant.
Is 3413373635 replaced by 8490740063?
Catalog history lists 8490740063 as the later number for 3413373635. Orders quoting that number are normally supplied as 8490740063; we confirm the change against the engine serial number, because a later number can come with related changes to mating parts.
Verification Notes
- For 8490740063, confirm engine model, serial number, required quantity, and destination before ordering.
- If 8490740063 markings or replacement status are unclear, send old-part photos or nameplate details.
- Priority item: part number, supersession, and export packing details are checked before quote.
Related MTU Parts
Similar to Flange by engine series or category.
Other Service Parts in This Engine Series
Related MTU 956, MTU 1163 service categories. Each item requires its own fitment check.