Volvo Penta Injection Pump 863798 - Special Order
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The Volvo Penta Injection Pump 863798 is an OEM diesel fuel injection pump assembly for the Volvo Penta TMD122A fuel system. This is the auxiliary injection pump version with RQV governor, used where Volvo Penta parts diagrams specifically call for part 863798.
Key Features
- Genuine Volvo Penta injection pump reference
- Part number: 863798
- Product type: diesel fuel injection pump assembly
- Application shown for TMD122A
- Description reference: Injection Pump | Aux
- Governor type: RQV governor
- Diagram group: TMD122A fuel system / injection pump
- High-value, calibration-sensitive diesel fuel-system component
Engine Compatibility
Commonly associated with the Volvo Penta TMD122A engine fuel-system diagram. This pump should be matched by exact engine serial number and pump tag before ordering.
Serial Number Fitment Notice
Confirm fitment by engine model, serial number, Volvo Penta parts diagram, and existing pump tag. Injection pumps can vary by governor type, calibration, production range, and auxiliary/standard fuel-system arrangement.
When This Part Needs Replacement
Replace or service the injection pump if the engine is hard to start, smokes excessively, lacks power, surges, runs unevenly, leaks fuel, has poor throttle response, or fails fuel-system diagnostic testing.
Installation Notes
Installation should be handled by a qualified diesel technician. Confirm pump timing, keep the fuel system clean, replace required seals and gaskets, prime and bleed the system, and check carefully for leaks after installation.
Alternate/Superseded Part Numbers
Related references include:
- 863798
- 866205 ā related auxiliary injection pump reference in same diagram group
- 3826532 ā related injection pump reference in same diagram group
Parts Desk Insight
The useful match points for this pump are TMD122A, auxiliary injection pump, and RQV governor. Because it sits in a diagram with multiple pump references, the existing pump tag and engine serial number are the final checks before ordering.
ā ļø Special Order: This product is not currently in stock but may be available from the Manufacturer. Special Orders may take up to 2 weeks to arrive. Call the parts desk before ordering if you need a closer estimate on delivery time.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 3ā4 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us ā and we back it with a straightforward 30-Day Satisfaction Guarantee.
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
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity ā and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.