Volvo Penta D4 D6 Seawater Hose 23367003 | Pump Outlet to Fuel Cooler Inlet

Part Number: 23367003
Supersedes: 21368514, 3888922
Replaced By: No confirmed replacement at time of listing
Brand: Volvo Penta
Official Product Type: Seawater (Raw-Water) Cooling Hose

The Volvo Penta 23367003 is a genuine OEM seawater hose for D4 and D6 diesel engines. It routes raw cooling water from the seawater pump outlet to the fuel cooler inlet, forming a critical link in the raw-water cooling circuit. This hose sits at diagram position 17 in the seawater filter / radiator / seawater pump assembly, alongside the seawater filter, radiator, and pump. It is the current active OEM number, superseding earlier part numbers 21368514 and 3888922.

Compatible Applications

• Volvo Penta D4-180I-F
• Volvo Penta D4-225A-E / D4-225A-F
• Volvo Penta D4-260A-E / D4-260A-F
• Volvo Penta D4-260D-E / D4-260D-F
• Volvo Penta D4-260I-F
• Volvo Penta D4-300A-E / D4-300A-F
• Volvo Penta D4-300D-E / D4-300D-F
• Volvo Penta D4-300I-F
• Volvo Penta D6-280A-E
• Volvo Penta D6-300A-F / D6-300D-F / D6-300I-F
• Volvo Penta D6-310A-E / D6-310D-E
• Volvo Penta D6-330A-E / D6-330A-F / D6-330D-E / D6-330D-F / D6-330I-F
• Volvo Penta D6-370A-E / D6-370A-F / D6-370D-E / D6-370D-F / D6-370I-F
• Volvo Penta D6-400A-E / D6-400A-F
• Volvo Penta D6-435D-E / D6-435D-F / D6-435I-F
• Always verify against your engine serial number and the correct Volvo Penta raw-water cooling diagram before ordering

Serial Number & Fitment Notice

Fitment can vary by engine version, cooling-system layout, and serial-number range. Confirm part number 23367003 against your engine serial number and the applicable raw-water cooling diagram before ordering — particularly on D4 and D6 engines that may have had prior hose, fuel-cooler, or seawater-pump updates.

System & Diagram Position

System: Raw-Water (Seawater) Cooling
Hose Path: Seawater pump outlet → Fuel cooler inlet
Diagram Position: Object 17 (Seawater Filter / Radiator / Seawater Pump assembly)

Engine Family

Volvo Penta D4 and D6 diesel inboard and IPS applications. Confirm applicability to your specific engine serial number via the Volvo Penta raw-water cooling diagram.

When to Replace

• Swelling, soft spots, or cracking anywhere along the hose body
• Abrasion, seepage, or weeping at hose ends or clamp areas
• Clamp-area distortion or hardening from heat exposure
• Age-related stiffening — this section of the raw-water circuit runs between the pump and fuel cooler and is exposed to sustained heat and pressure cycling
• Any time the seawater pump or fuel cooler is being serviced — replacing the hose at the same time is low-cost insurance

Service Interval

Inspect at every raw-water cooling service and at each annual haul-out. Replace immediately if swelling, cracking, or seepage is found. Volvo Penta recommends replacing raw-water hoses proactively as part of a scheduled cooling-system overhaul rather than waiting for visible failure.

Installation Notes

• Confirm diagram position 17 and part number 23367003 against your engine serial number before installation
• Inspect the seawater pump outlet fitting and fuel cooler inlet for corrosion or damage before fitting the new hose
• Replace clamps at the same time — reusing old clamps on a new hose is a common cause of repeat leaks
• Several nearby hoses in the D4/D6 raw-water circuit look similar once removed — confirm the diagram position before ordering to avoid a mis-match

Part Number & Supersession

Current OEM Part Number: 23367003
Supersedes: 21368514 and 3888922 (both earlier Volvo Penta numbers now updated to 23367003)
Replaced By: No confirmed replacement number at time of listing

Dimensions & Weight

Approximate weight: 0.37 kg (0.82 lb). Hose length and diameter match the D4/D6 raw-water cooling schematic specification — confirm fitment via diagram before ordering.

Kit Contents

Single seawater hose (23367003). Clamps and related hardware are separate line items.

Related Parts

• Volvo Penta Seawater Pump – 21419376 — pump this hose connects from
• Volvo Penta Seawater Pump | 24219064 | D6 Series — D6 seawater pump
• Volvo Penta D4 D6 Seawater Hose Kit 22191941 — complete hose kit for D4/D6 raw-water cooling
• Seawater filter: 21368500 (in same assembly group)
• Radiator: 3584243 (in same assembly group)

Parts Desk Insights

Best use case: Seawater pump or fuel cooler service on D4 and D6 engines. This hose is the right one to replace at the same time — it is inexpensive relative to the labour already invested in opening that section of the cooling circuit, and a failed hose here will put raw water directly into the fuel cooler area.

Common customer issue: Several hoses in the D4/D6 raw-water circuit look nearly identical once they are off the engine. Customers occasionally order the wrong one by comparing bends and length by eye. Always cross-reference diagram position 17 and part number 23367003 against your engine serial number — do not substitute by appearance alone.

Technical FAQ

Q: Does 23367003 replace 21368514 and 3888922?
A: Yes. Both 21368514 and 3888922 are earlier Volvo Penta part numbers that have been updated to 23367003. Use 23367003 as the current ordering number.

Q: Will this hose fit both D4 and D6 engines?
A: Cross-reference sources associate it with a wide range of D4 and D6 variants. Always verify against your specific engine serial number and the applicable Volvo Penta raw-water cooling diagram before ordering.

Q: Should I replace the clamps at the same time?
A: Yes. Reusing old clamps on a new hose is one of the most common causes of repeat cooling-water leaks. Replace clamps whenever you replace a hose.