Scania DI13 Marine Propulsion Engine Raw Water Pump: Parts, Repair Kits & Replacement
Your Scania DI13 marine propulsion engine isn't producing the normal amount of seawater flow.
Maybe the engine temperature starts climbing when you increase load.
Perhaps you've found seawater leaking around the pump.
Or you've removed the raw-water pump and discovered a damaged impeller, worn seal, bearing problem or shaft wear.
So you search:
“Scania DI13 marine propulsion engine raw water pump.”
But before ordering a replacement, there's something important to know:
Not every Scania DI13 marine engine uses the same seawater pump arrangement.
Scania's DI13 marine parts information identifies several seawater-pump configurations, including different pump positions, capacities and designs.
Depending on the configuration, documented pump references include:
1785018 — Sea water pump, 190 L/min
1856264 — Sea water pump, 190 L/min, class
1785016 — Sea water pump, 280 L/min
1785017 — Sea water pump, 280 L/min, class
Other DI13 arrangements use additional pump references.
So before ordering, identify the complete engine designation, engine serial number and installed pump arrangement.
For additional engine and cooling-system components, visit our Scania D13 & DI13 Marine Engine Spare Parts page.
What Does the Raw Water Pump Do on a Scania DI13?
Scania describes this component as the sea water pump.
Marine engineers may also call it the:
Raw-water pump
Seawater pump
Sea water pump
Its job is to circulate seawater through the engine's external marine cooling circuit.
On applicable DI13 heat-exchanger installations, seawater is drawn into the system and circulated by the seawater pump.
From there, seawater passes through the charge-air cooler and then the heat exchanger, where heat from the engine's internal coolant circuit is transferred to the seawater.
Without sufficient seawater circulation, the engine may not be able to reject enough heat when operating under load.
For other cooling-system and engine components, browse our Scania D13 & DI13 Marine Engine Spare Parts catalogue.
Is the Scania DI13 Raw Water Pump Gear Driven?
On the applicable standard DI13 marine cooling arrangement, yes.
Scania specifies a seawater pump driven directly from the engine timing gear through a gear drive.
This is different from marine engines that use an externally V-belt-driven raw-water pump.
The standard applicable Scania arrangement uses a rubber impeller.
That rubber impeller is particularly important because it depends on seawater for lubrication and cooling.
Can You Run a Scania DI13 Raw Water Pump Dry?
No.
This should be avoided.
Scania warns that the standard rubber-impeller seawater pump can suffer impeller damage if operated dry for too long.
Before starting the engine after cooling-system maintenance, check that:
- Seacock is open
- Sea strainer is correctly assembled
- Seawater intake is clear
- Hoses are connected
- Pump has been correctly installed
- Seawater can reach the pump
Don't deliberately operate the engine without seawater simply to check whether the pump turns.
A dry-running rubber impeller can be damaged very quickly.
Which Raw Water Pump Does the Scania DI13 Use?
This is where identification becomes important.
Scania's DI13 marine parts information lists several seawater-pump arrangements.
High-Backward DI09/DI13M Arrangement
Documented complete pump references include:
| Scania Part NumberDescription | |
| 1785018 | Sea water pump — 190 L/min |
| 1856264 | Sea water pump — 190 L/min, class |
| 1785016 | Sea water pump — 280 L/min |
| 1785017 | Sea water pump — 280 L/min, class |
These belong to applicable high-backward DI09/DI13M seawater-pump arrangements.
This demonstrates why ordering simply by:
“Scania DI13 raw water pump”
may not provide enough information.
You may need to determine whether the installed pump is a 190 L/min or 280 L/min configuration, together with the exact engine and installation arrangement.
Scania DI13 Low-Forward Sea Water Pump
Scania also lists a separate low-forward DI09/DI13M seawater-pump arrangement.
Documented references include:
1923450 — Sea water pump
2037722 — Sea water pump, class
This is a different arrangement from the high-backward pump configuration.
Don't assume 1923450 is interchangeable with 1785018 or 1785016 simply because all of these numbers appear in DI13 marine applications.
The exact installation matters.
Scania DI13 SAE-B Sea Water Pump
Another documented DI09/DI13M configuration is an SAE-B seawater-pump arrangement.
Documented references include:
2094321 — Sea water pump
2127577 — Sea water pump, class
This configuration uses a different arrangement again.
The important sourcing rule remains:
The DI13 engine model alone does not identify the correct seawater pump.
For help identifying engine-specific cooling components, visit our Scania D13 & DI13 Marine Engine Spare Parts page.
Scania DI13 Raw Water Pump Part Numbers
Important documented DI13 marine seawater-pump references include:
| Scania Part NumberDescription / Arrangement | |
| 1785018 | Sea water pump, 190 L/min |
| 1856264 | Sea water pump, 190 L/min, class |
| 1785016 | Sea water pump, 280 L/min |
| 1785017 | Sea water pump, 280 L/min, class |
| 1923450 | Sea water pump, low-forward arrangement |
| 2037722 | Sea water pump, low-forward arrangement, class |
| 2094321 | Sea water pump, SAE-B arrangement |
| 2127577 | Sea water pump, SAE-B arrangement, class |
These numbers should not automatically be treated as interchangeable.
Before ordering, match the pump to the exact DI13 marine-engine installation.
Are Scania DI13 Raw Water Pump Repair Kits Available?
Yes.
Scania parts information lists several repair-kit references for applicable DI13 marine seawater-pump arrangements.
Important references include:
2295719 — Repair kit
2295736 — Repair kit, applicable 190 L/min arrangement
2295735 — Repair kit, applicable 280 L/min arrangement
2295741 — Repair kit
2295743 — Repair kit
2295745 — Repair kit
But there is an important distinction:
A “repair kit” does not necessarily mean a complete pump overhaul kit.
Different repair-kit numbers can cover different groups of components.
Always identify the installed pump before selecting a kit.
What Is Scania 2295719?
2295719 is a documented repair-kit reference for applicable DI13 marine seawater-pump arrangements.
The applicable parts arrangement associates the kit with components including the rubber impeller and sealing components.
This makes it particularly relevant when servicing the impeller side of the pump.
However, verify the exact pump application before ordering.
What Is Scania 2295736?
2295736 is a documented repair-kit reference associated with an applicable:
190 L/min seawater-pump configuration.
If your engine uses a different pump arrangement, don't automatically assume this kit is correct.
What Is Scania 2295735?
2295735 is a documented repair-kit reference associated with an applicable:
280 L/min seawater-pump configuration.
This demonstrates why pump capacity matters.
A repair kit associated with one pump arrangement shouldn't automatically be installed in another.
What Is Scania 2295741?
2295741 is another documented repair-kit reference appearing in an applicable DI13 marine seawater-pump arrangement.
Its exact application should be matched against the installed pump before ordering.
What Is Scania 2295743?
2295743 is another documented seawater-pump repair-kit reference.
The applicable arrangement associates this kit with shaft, bearing and sealing-related components.
This type of repair becomes relevant when the pump problem goes beyond a simple damaged rubber impeller.
What Is Scania 2295745?
2295745 is another repair-kit reference listed in applicable seawater-pump arrangements.
Again, don't assume that every Scania part described as a repair kit contains everything required to rebuild the pump.
Different kits service different areas of the assembly.
What Are the Symptoms of a Failing DI13 Raw Water Pump?
Possible symptoms include:
- Engine temperature increasing under load
- Reduced seawater discharge
- Intermittent seawater flow
- Seawater leakage around the pump
- Damaged rubber impeller
- Pump noise
- Bearing noise
- Shaft movement
- Seal leakage
- Corrosion
- Repeated impeller failure
However, these symptoms don't automatically prove that the pump itself is defective.
The complete seawater circuit should be checked.
Scania DI13 Overheats Under Load
This is a common situation where the raw-water pump becomes a suspect.
The engine may operate normally at idle.
At low load, the temperature remains acceptable.
But once the vessel accelerates and the DI13 begins producing substantial power, the temperature starts increasing.
That can indicate insufficient cooling capacity.
Possible causes include:
- Restricted seawater intake
- Blocked sea strainer
- Damaged impeller
- Worn seawater pump
- Air entering the suction side
- Restricted hose
- Fouled charge-air cooler
- Fouled heat exchanger
- Internal coolant-system problem
Don't replace the raw-water pump before checking the complete cooling circuit.
Low Seawater Flow From the Exhaust
If the vessel uses a wet-exhaust arrangement and the normal seawater discharge suddenly decreases, investigate immediately.
Start with:
Seacock
Make sure it's fully open.
Sea Strainer
Check for:
- Weed
- Plastic
- Shell fragments
- Sand
- Marine growth
- Other debris
Seawater Intake
Check for external blockage.
Suction Hose
Look for:
- Collapse
- Kinks
- Cracks
- Loose clamps
- Air leaks
Raw-Water Pump
Inspect the pump and rubber impeller.
Charge-Air Cooler and Heat Exchanger
Check for restrictions further downstream.
Why Does the DI13 Rubber Impeller Fail?
A rubber seawater-pump impeller can be damaged by:
- Running dry
- Restricted seawater supply
- Age
- Heat
- Debris
- Incorrect installation
- Long storage periods
- Housing damage
- Excessive wear
Dry running is particularly dangerous because seawater normally helps lubricate and cool the rubber impeller.
What Happens if the Impeller Breaks Apart?
Don't simply install another impeller and close the pump.
Find the missing pieces.
Broken rubber fragments can travel downstream through the seawater circuit.
Depending on the installation, fragments may become trapped in:
- Hoses
- Connections
- Charge-air cooler
- Heat exchanger
That can create a restriction and cause overheating even after a new impeller has been installed.
If the old impeller is missing blades or large sections, inspect the downstream cooling circuit.
Should I Carry a Spare DI13 Raw Water Pump Impeller?
For a commercial propulsion engine, carrying appropriate seawater-pump service components onboard can be sensible.
Useful spares may include:
- Correct impeller
- Applicable impeller repair kit
- Gaskets
- O-rings
- Applicable seals
- Other pump service components
But the important word is:
Correct.
Don't simply order a generic “Scania DI13 impeller.”
Identify the installed pump arrangement first.
My Scania DI13 Raw Water Pump Is Leaking
First identify exactly where the leak originates.
Possible locations include:
- Pump cover
- Gasket
- O-ring
- Shaft area
- Internal seal
- Pump housing
- Hose connection
- Mounting area
If leakage comes from the cover, a gasket or O-ring may be involved.
If seawater is appearing around the shaft, the pump may require deeper repair.
Don't repeatedly replace a cover gasket if the actual problem is shaft, bearing or internal seal wear.
What if the DI13 Pump Shaft Has Play?
Abnormal shaft movement deserves investigation.
Possible causes include:
- Bearing wear
- Shaft wear
- Internal pump damage
- Retaining-component wear
Applicable DI13 seawater-pump arrangements have repair kits covering shaft, bearing and sealing-related components.
Whether rebuilding makes economic sense depends on the condition of the complete pump.
Rebuild or Replace the DI13 Raw Water Pump?
That depends on what you find.
Rebuild May Make Sense When:
- Pump housing remains serviceable
- Shaft can be repaired using the correct components
- Bearings are replaceable
- Impeller needs replacement
- Internal seals can be renewed
- Corrosion isn't severe
Complete Replacement May Make More Sense When:
- Housing is badly damaged
- Severe corrosion is present
- Pump has multiple internal failures
- Mounting surfaces are damaged
- Repair cost approaches replacement cost
- Vessel downtime makes rebuilding impractical
A repair kit is useful only when the main pump assembly is still worth repairing.
Standard Rubber-Impeller Pump vs Self-Priming Pump
Scania marine cooling documentation identifies another important distinction.
The standard applicable marine arrangement uses a rubber-impeller seawater pump.
Other installations can use different seawater-pump arrangements depending on engine specification and operating requirements.
This is another reason two DI13 engines can have different pump configurations.
Always identify the installed component rather than ordering from the engine family alone.
Raw Water Pump vs Coolant Pump on the Scania DI13
Don't confuse them.
The DI13 marine engine has different pumps serving different cooling functions.
Raw-Water / Sea Water Pump
Circulates seawater through the external cooling circuit.
Coolant Pump
Circulates engine coolant through the internal closed cooling circuit.
These are separate components.
So if your inquiry simply says:
“Need Scania DI13 water pump.”
we'll need more information.
Specify:
Scania DI13 raw-water / seawater pump
when requesting the component discussed in this article.
You can browse additional cooling components on our Scania D13 & DI13 Marine Engine Spare Parts page.
Can a Bad DI13 Raw Water Pump Damage the Engine?
Potentially, yes.
If seawater circulation becomes insufficient, cooling performance can deteriorate.
Continued operation while the engine is overheating can contribute to serious problems.
Depending on severity, excessive engine temperature can affect:
- Cylinder heads
- Head gaskets
- Pistons
- Cylinder liners
- Lubricating oil
- Turbocharger
- Exhaust components
- Other temperature-sensitive components
If the engine temperature rises unexpectedly, don't continue operating at high load simply because the engine still runs.
Find the cooling problem.
Should I Check the Heat Exchanger?
Yes.
On applicable DI13 heat-exchanger installations, the seawater circuit passes through the engine's marine cooling components after leaving the pump.
If the heat exchanger becomes restricted, cooling performance can suffer.
A healthy raw-water pump can't overcome every downstream restriction.
This becomes particularly important after an impeller failure.
Missing rubber pieces may become trapped downstream.
Should I Check the Charge-Air Cooler?
Yes.
On applicable DI13 marine cooling arrangements, seawater passes through the charge-air cooler as part of the cooling circuit.
Restricted seawater flow can therefore affect cooling performance.
Inspect the cooler if you've experienced:
- Repeated overheating
- Previous impeller failure
- Marine growth
- Heavy contamination
- Poor seawater circulation
Why Is the Existing Pump Number Important?
Marine propulsion engines can remain in service for many years.
During that time, a seawater pump may have been:
- Replaced
- Rebuilt
- Updated
- Superseded
- Changed during a previous repair
That's why the basic engine designation isn't always enough.
Before removing the pump, photograph:
Engine data plate
Existing pump
Pump identification
Mounting arrangement
Hose connections
Drive arrangement
This information can make correct identification considerably easier.
What Information Do I Need Before Ordering a DI13 Raw Water Pump?
Send us:
Manufacturer: Scania
Engine: DI13 marine
Complete engine designation:
Engine serial number:
Propulsion or auxiliary application:
Existing seawater-pump number:
Pump arrangement, if known:
Pump capacity: 190 L/min / 280 L/min / unknown
Existing repair-kit number:
Required quantity:
Clear photographs:
Delivery country or port:
Important documented pump references include:
1785018
1856264
1785016
1785017
1923450
2037722
2094321
2127577
But don't select one simply because it appears in this article.
For additional engine-specific components, visit our Scania D13 & DI13 Marine Engine Spare Parts page.
Scania DI13 Raw Water Pump Inspection Checklist
Before replacing or rebuilding the pump:
1. Confirm the Engine
Record the complete DI13 marine-engine designation.
2. Record the Engine Serial Number
This helps identify the correct configuration.
3. Identify the Existing Pump
Look for a readable pump or Scania part number.
4. Photograph the Installation
Take clear photographs before removal.
5. Check the Seawater Intake
Make sure the pump is actually receiving water.
6. Check the Sea Strainer
Remove contamination or debris.
7. Inspect the Suction Hose
Look for restriction, collapse or air leakage.
8. Remove the Pump Correctly
Follow the applicable service procedure.
9. Inspect the Impeller
Look for worn, damaged or missing blades.
10. Find Missing Impeller Pieces
Check downstream cooling components if the impeller has broken apart.
11. Inspect the Pump Housing
Look for corrosion and wear.
12. Check the Shaft
Look for abnormal movement.
13. Inspect Bearings and Seals
Determine whether rebuilding is practical.
14. Identify the Correct Repair Kit
Don't assume all DI13 pump kits are interchangeable.
15. Inspect the Charge-Air Cooler
Especially after an impeller failure.
16. Inspect the Heat Exchanger
Check for restriction or fouling.
17. Reassemble Correctly
Use the correct seals, gaskets and service components.
18. Restore Seawater Supply
Never intentionally start a rubber-impeller pump dry.
19. Start and Inspect
Check seawater flow and leakage.
20. Test Under Load
Monitor engine temperature and seawater circulation during normal propulsion load.
Scania DI13 Raw Water Pump FAQs
What is the Scania DI13 raw water pump part number?
There isn't one universal DI13 raw-water-pump number.
Documented DI13 marine seawater-pump references include:
1785018
1856264
1785016
1785017
1923450
2037722
2094321
2127577
The correct pump depends on the exact engine and cooling-system configuration.
What is Scania 1785018?
1785018 is a documented 190 L/min seawater-pump reference for an applicable DI09/DI13M marine arrangement.
What is Scania 1785016?
1785016 is a documented 280 L/min seawater-pump reference for an applicable DI09/DI13M marine arrangement.
What is Scania 1923450?
1923450 is a documented seawater-pump reference associated with an applicable low-forward DI09/DI13M arrangement.
What is Scania 2094321?
2094321 is a documented seawater-pump reference associated with an applicable SAE-B DI09/DI13M arrangement.
Is there a Scania DI13 raw water pump repair kit?
Yes.
Documented repair-kit references include:
2295719
2295735
2295736
2295741
2295743
2295745
The correct kit depends on the installed pump and the components requiring repair.
What is Scania 2295719?
2295719 is a documented repair-kit reference for applicable Scania marine seawater-pump arrangements.
Verify the installed pump before ordering.
Can I run a DI13 rubber-impeller pump without seawater?
No.
Running a rubber-impeller seawater pump dry can quickly damage the impeller.
Always restore the seawater supply before starting the engine.
Is the Scania DI13 raw water pump belt driven?
On the applicable standard Scania DI13 marine arrangement discussed here, the seawater pump is gear driven, not externally V-belt driven.
Always confirm the exact engine configuration.
Does seawater pass through the DI13 charge-air cooler?
On applicable heat-exchanger marine cooling arrangements, yes.
The seawater circuit includes the charge-air cooler and heat exchanger.
Can a damaged raw water pump cause DI13 overheating?
Yes.
Insufficient seawater flow can reduce cooling capacity.
However, also check the seawater intake, strainer, hoses, charge-air cooler and heat exchanger before concluding that the pump itself has failed.
Should I replace the complete pump when the impeller fails?
Not necessarily.
If the housing, shaft, bearings and other pump components remain serviceable, the correct repair components may be sufficient.
Complete replacement becomes more appropriate when the pump has significant corrosion, mechanical wear or housing damage.
Where can I find other Scania DI13 engine parts?
Visit our Scania D13 & DI13 Marine Engine Spare Parts page for cooling-system, fuel-system, overhaul and other DI13 engine components.
Related Scania Marine Engine Parts
For additional Scania DI13 propulsion-engine components, visit our Scania D13 & DI13 Marine Engine Spare Parts page.
You can also browse our Scania Marine Engine Spare Parts & Overhaul Kits page for other Scania marine-engine families.
For the complete Scania engine catalogue, visit Scania Marine Engines.
For general engine and vessel components, browse our Marine Spare Parts catalogue.
Need Scania DI13 Raw Water Pump Parts?
Looking for a Scania DI13 marine propulsion engine raw-water pump, seawater pump, impeller, repair kit, shaft, seal or related cooling-system component?
Send us:
Complete Scania DI13 engine designation
Engine serial number
Existing pump part number
Pump capacity, if known
Existing repair-kit number
Required quantity
Clear photographs
Delivery country or port
Important documented DI13 seawater-pump references include:
1785018 — 190 L/min
1856264 — 190 L/min, class
1785016 — 280 L/min
1785017 — 280 L/min, class
1923450 — Low-forward arrangement
2037722 — Low-forward arrangement, class
2094321 — SAE-B arrangement
2127577 — SAE-B arrangement, class
Documented repair-kit references include:
2295719
2295735
2295736
2295741
2295743
2295745
Always verify the installed pump and complete engine configuration before ordering.
Browse Scania D13 & DI13 Marine Engine Spare Parts
Browse Scania Marine Engine Spare Parts & Overhaul Kits