Volvo Penta D4-300 Turbocharger 3887963
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Volvo Penta D4-300 Turbocharger 3887963
Part Number: 3887963
Brand: Volvo Penta
Product Type: Turbocharger Assembly (OEM new)
Engine Family: D4-300
Displacement: 3.67L
Engine Output: 221 kW / 300 hp
Turbo Family: BorgWarner K26
BorgWarner References: 53269987105 / 53269707105
System: Inlet and Exhaust / Charge Air
Quantity Required: 1 per engine
Approximate Weight: 9 kg
Remanufactured Alternative: 3801173 (Volvo Penta reman — same diagram position)
What This Part Is
The 3887963 is the exhaust-driven turbocharger assembly for the Volvo Penta D4-300 3.67L marine diesel engine. It is positioned in the engine’s inlet and exhaust system and is directly installed with the exhaust manifold, intake manifold, oil feed and return connections, and associated turbocharger gaskets. This is the new OEM unit. A Volvo Penta remanufactured option is available under 3801173 at the same diagram position.
Do not select this turbocharger by D4 displacement alone. Volvo Penta D4-180, D4-210, D4-225, and D4-260 engines use different turbocharger part numbers. Confirm the exact D4-300 model and serial number before ordering.
Compatible Applications
Confirm engine model, serial number, existing turbocharger part number, and Volvo Penta inlet/exhaust-system diagram before ordering.
- Volvo Penta D4-300A-A
- Volvo Penta D4-300A-C
- Volvo Penta D4-300A-D
- Volvo Penta D4-300A-E
- Volvo Penta D4-300A-F
- Volvo Penta D4-300D-A
- Volvo Penta D4-300D-C
- Volvo Penta D4-300D-D
- Volvo Penta D4-300D-E
- Volvo Penta D4-300D-F
- Volvo Penta D4-300I-A
- Volvo Penta D4-300I-C
- Volvo Penta D4-300I-D
- Volvo Penta D4-300I-E
- Volvo Penta D4-300I-F
- Selected B-series D4-300A, D4-300D, and D4-300I variants (confirm by serial number)
Serial Number Notice
Volvo Penta used different turbocharger assemblies across the D4 engine range. The D4-260 and other D4 output ratings use separate turbocharger numbers. 3887963 is specifically associated with the D4-300 300 hp family. Always verify the existing turbocharger part number and engine serial number before ordering — do not cross-order between D4 output variants.
When to Replace
- Excessive shaft play or bearing noise confirmed by diagnosis
- Compressor or turbine wheel damage (contact, chipping, or erosion)
- Persistent oil leakage through the turbocharger seals
- Loss of boost pressure confirmed by charge-air system diagnosis
- Abnormal turbocharger noise (whining, grinding, or intermittent surge)
- Compressor or turbine housing damage
- Major internal corrosion or shaft seizure
Several engine, fuel, exhaust, and charge-air faults can produce symptoms similar to turbocharger failure. Complete the full system diagnosis before ordering a replacement turbocharger.
Installation Notes
- Before installation, inspect and clean all oil-feed and return connections, oil passages, and related oil lines — a blocked or restricted oil feed is the leading cause of premature turbocharger failure
- Inspect and replace all exhaust mating-surface gaskets at the turbine inlet and outlet
- Check the intake plumbing and charge-air intercooler for contamination from the failed turbo (oil carry-over is common)
- Prime the turbocharger with clean engine oil through the oil feed port before initial startup — follow the Volvo Penta D4 service procedure for turbocharger installation
- Do not run the engine at high load immediately after turbocharger replacement — allow the bearings to seat at idle before load application
- Inspect and replace the air filter if turbocharger failure produced debris ingestion
Related System Components
Volvo Penta D4-300 inlet/exhaust diagrams show the following components installed with or adjacent to 3887963:
- Volvo Penta Turbocharger Plane Gasket 22206133
- Volvo Penta Boost Pressure Sensor 22320906 — D3 D4 D6
- Volvo Penta Exhaust Hose 3584167 — D4 DPH / DPR / DPI
- Gasket 3583336
- Gasket 3582725
- Gasket 947627
- Banjo fitting 858750
- Hollow screw 969299
- Exhaust manifold 3841197
- Intake manifold 3808941
Part Number Cross-Reference
- New OEM: 3887963
- Remanufactured equivalent: 3801173 (Volvo Penta reman — same diagram position)
- Earlier reference numbers: 3835914, 3829638
- BorgWarner (new): 53269987105
- BorgWarner (reman): 53269707105
Technical FAQ
Q: What is the difference between 3887963 and 3801173?
A: 3887963 is the new OEM turbocharger. 3801173 is the Volvo Penta remanufactured equivalent, shown at the same diagram position on D4-300 engines. Both are factory-authorized options — the reman unit is typically more cost-effective for a running engine with low-hour mileage remaining on the drive package.
Q: Will this turbocharger fit a D4-260?
A: No. The D4-260 uses a different turbocharger part number. 3887963 is specifically the D4-300 unit. Ordering by D4 displacement alone will result in the wrong part. Always verify using the exact engine model suffix (300 vs 260) and engine serial number.
Q: What causes D4-300 turbocharger failure?
A: The most common causes are oil starvation (blocked feed line, low oil level, extended oil change intervals), oil contamination, foreign object ingestion through the air intake, and coolant contamination. Identify and correct the root cause before installing a replacement to avoid repeat failure.
Q: Do I need to replace the turbo gaskets when replacing the turbocharger?
A: Yes. All exhaust-side gaskets at the turbine inlet and outlet should be replaced during turbocharger installation. Reusing compressed or heat-cycled gaskets on a high-pressure exhaust connection risks an exhaust leak after reassembly.
Parts Desk Insights
Best use case: Order 3887963 when diagnosis has confirmed turbocharger bearing or wheel failure on a Volvo Penta D4-300 and the engine serial number and model suffix have been verified as D4-300. For budget-sensitive applications with low remaining hours, the Volvo Penta reman unit (3801173) is worth considering as an alternative.
Common issues: The most frequent mistake is ordering by D4 displacement without confirming the output rating — D4-260 and other D4 variants use different turbochargers that are not interchangeable with 3887963. A second common issue is replacing the turbocharger without diagnosing and correcting the root cause of failure: a new turbocharger installed into a system with a blocked oil feed line, contaminated oil, or debris in the intake will fail prematurely for the same reason.
Related Parts
Shipping information
In-stock and OEM parts: ship same or next business day.
Supplier-stock items are usually ready for pickup or shipping within 24 hours of ordering.
Special-order timing may vary.
Returns & warranty
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If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
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