Volvo Penta TMD122 TAMD122 Coolant Pump Gasket 862596
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Part Details
- Part Number: 862596
- Brand: Volvo Penta
- Official Product Type: Coolant Circulation Pump Gasket
- Supersedes: No confirmed superseding number on record
- Replaced By: 862596 is the current active part number
- Related Historical Reference: 866396 — appears alongside 862596 in Volvo Penta parts documentation
- Engine Family: Volvo Penta TMD122 and TAMD122 marine diesel
- System: Engine cooling — seals the coolant circulation pump connection to prevent coolant leakage and maintain cooling-system integrity
- Quantity Required: 1 per assembly
- Kit Contents: One gasket, supplied individually
Compatible Applications
Fitment is engine-model and serial-number specific. Confirm 862596 against the Volvo Penta circulation pump and drive assembly diagram for the exact engine. Cooling-system gaskets can look similar while differing in port arrangement, bolt-hole position, and mating-surface profile — match by part number and diagram, not appearance alone.
- TMD122A
- TAMD122A
- TAMD122P
Serial Number Fitment Notice
Confirm the complete Volvo Penta engine model and serial number before ordering. Do not broaden fitment beyond the verified TMD122A, TAMD122A, and TAMD122P applications without confirming against the applicable Volvo Penta parts diagram for the specific engine.
Alternate & Cross-Reference Part Numbers
- 862596 — current Volvo Penta OEM number
- 866396 — related earlier / reference number shown in Volvo Penta parts documentation
When This Part Needs Replacement
- Circulation pump or adjoining housing is removed for any reason
- Coolant seepage visible around the pump or flange joint
- Original gasket is torn, compressed, or deteriorated
- Corrosion visible around the sealing surface
- Evidence of previous leakage or improper sealant use at the joint
- Cooling system overhaul or pump replacement
Reusing a compressed cooling-system gasket is a reliable cause of repeat leakage after reassembly. Replace whenever the pump or housing is disturbed.
Service Interval
No fixed replacement interval — replace on condition or whenever the circulation pump or adjoining housing is removed. Inspect during any cooling system service that exposes the pump assembly.
Installation Notes
Drain the applicable section of the cooling system before removing the pump or housing. Thoroughly clean both mating surfaces and remove all old gasket material without damaging the sealing faces. Inspect the circulation pump, flange, fasteners, coolant passages, and nearby seals while the assembly is apart.
Install the gasket in the correct orientation. Use sealant only if specified by the applicable Volvo Penta service procedure for this location — many cooling gaskets install dry. Tighten fasteners evenly to the service-manual torque specification. Refill the cooling system, bleed air as required, and inspect carefully for leakage after the engine reaches operating temperature.
Related Parts
- 866396 — Related Volvo Penta gasket reference
- TMD122 Coolant Circulation Pump
- TMD122 Cooling System Components
- TAMD122 Heat Exchanger
- TMD122 Thermostat
Parts Desk Insight
A cooling-system gasket is one of the least expensive parts in a pump service, but skipping the replacement is one of the most reliable ways to create a repeat leak. Once the pump or housing is off, the old gasket should come out — compression set and surface damage from the previous installation mean it won’t seal reliably a second time. While access is available, it’s worth checking the pump shaft for play, inspecting the housing mating face for corrosion or pitting, and replacing any O-rings in the same assembly. The TMD122 and TAMD122 cooling systems have limited access points, so doing the full inspection during a pump-off service avoids having to come back in for something that was visible and skipped.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 1-3 business days.
Special-order items: timeline confirmed after order.
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
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.
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