Volvo Penta Fuel Pressure Regulator 3858967
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Volvo Penta OEM Fuel Pressure Regulator – Part No. 3858967
Note: Volvo Penta’s parts catalog lists this component as “Governor.” Service references and parts-channel data consistently identify its function as the EFI fuel pressure regulator.
| Part Number | 3858967 |
| Brand | Volvo Penta |
| Volvo Penta Catalog Description | Governor |
| Functional Type | EFI Fuel Pressure Regulator |
| System | EFI Fuel Rail / Injector Assembly |
| Retaining Hardware | Clip 3858968 |
| Related O-Ring Set | 3858981 (regulator / injector O-rings) |
| Service Bulletin | Volvo Penta bulletin P-23-7-3 applies to this regulator |
| Weight | Approx. 0.5 kg |
| Supersedes | No confirmed OEM superseding number — 3858967 is the current active number |
| Replaced By | No documented replacement |
Compatible Applications
Volvo Penta used different EFI fuel-system components across otherwise similar V6 and V8 engine generations. Confirm the complete engine model, suffix, and serial number before ordering.
- Volvo Penta 4.3Gi / 4.3GXi / 4.3OSi
- Volvo Penta 5.0Gi / 5.0GXi / 5.0OSi (including 5.0GXi-F and 5.0GXi-G)
- Volvo Penta 5.7Gi / 5.7GXi / 5.7OSi / 5.7OSXi (including 5.7GXi-EF, 5.7GXiE-J, 5.7OSi-BF, 5.7OSXi-A)
- Volvo Penta V6-200 / V6-225 (selected later configurations)
- Volvo Penta V8-225 / V8-270 / V8-300 / V8-320 / V8-380 (selected applications — verify by serial number)
Symptoms of a Failing Fuel Pressure Regulator
Test fuel rail pressure using the Volvo Penta service procedure before replacing the regulator. Common symptoms of a faulty regulator include:
- Incorrect fuel rail pressure (high or low)
- Hard starting or long crank times
- Rich or lean running conditions
- Engine surging at speed or under load
- Poor idle quality
- Stalling under load
- Fuel-delivery related fault codes
Installation Notes
Fuel pressure must be relieved before opening the fuel rail. Follow appropriate fuel-system safety precautions and inspect for leaks after reassembly.
During replacement, inspect the retaining clip (3858968), fuel rail, regulator sealing surfaces, and O-rings. Replace O-rings if they show any compression, cracking, or swelling.
Service Bulletin P-23-7-3: Volvo Penta bulletin P-23-7-3 specifies that the regulator’s internal screen filter should be removed and replaced with E-clip 21491831 in applicable installations. Review this bulletin when servicing 3858967.
Related Parts
- Volvo Penta Clip 21491831 — service bulletin P-23-7-3 replacement clip
Technical FAQ
Why does Volvo Penta call this a “Governor”?
The Volvo Penta parts catalog uses “Governor” as the listed description for 3858967, but service references, bulletin P-23-7-3, and parts-channel data consistently identify its function as the EFI fuel pressure regulator. Both terms refer to the same part — use 3858967 as the ordering number.
Do I need to replace the O-rings at the same time?
Yes, in most cases. The regulator O-ring set (3858981) seals the regulator to the fuel rail and the injector ports. Replacing the O-rings whenever the fuel rail is opened is standard practice and prevents fuel leaks after reassembly.
What does service bulletin P-23-7-3 involve?
Bulletin P-23-7-3 instructs technicians to remove the regulator’s internal screen filter and install E-clip 21491831 in its place on applicable installations. This update should be completed when the regulator is serviced.
Should I confirm fitment even if my engine displacement matches?
Yes. Volvo Penta used different EFI fuel-system components across V6 and V8 production runs of otherwise similar engines. The full engine model suffix and serial number are the reliable fitment references — displacement alone is not sufficient.
Parts Desk Insights
The “Governor” catalog name causes regular confusion — customers and technicians searching for a fuel pressure regulator won’t recognize it by that name. This part comes up most during EFI drivability complaints: hard starting, surging, and fuel pressure test failures are the most common reasons it’s ordered. Pairing the regulator with the O-ring set (3858981) and the service bulletin E-clip (21491831) on the same order covers a complete regulator service and avoids a return visit for a fuel leak.
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.
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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
Important:
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