Volvo Penta Thermostat Housing 21967279
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Volvo Penta 21967279 is an OEM thermostat housing used in the engine coolant circuit. The housing provides the mounting and coolant-routing location for the thermostat assembly, allowing coolant flow to be regulated as the engine reaches operating temperature. Part number 21967279 is also identified within Volvo Group applications as an engine coolant thermostat housing / water outlet.
Key Features
- Genuine Volvo Group OEM thermostat housing
- OEM part number 21967279
- Part of the engine cooling and thermostat circuit
- Provides the housing and coolant passage for the thermostat assembly
- Also associated with Volvo D13 and Mack MP8 engine-family applications
Engine Compatibility
Part 21967279 is confirmed within the broader Volvo Group engine family and is commonly associated with:
- Volvo D13
- Mack MP8
For Volvo Penta applications, exact engine fitment should be confirmed by engine model and serial number before ordering, as cooling-system configurations can vary between marine, industrial and power-generation engine installations.
Serial Number Fitment Notice
Confirm 21967279 against the Volvo Penta engine serial number and cooling-system parts diagram before installation. Volvo Group engine families can share base-engine components while using different cooling-system configurations depending on application.
When This Part Needs Replacement
Replace the thermostat housing if it is cracked, warped, severely corroded, damaged at a hose or sealing connection, or leaking coolant around the thermostat mounting area. Persistent coolant seepage after seal replacement can indicate damage to the housing or sealing surface.
Installation Notes
Inspect the thermostat, seals, hose connections and mating surfaces whenever the housing is removed. Clean all sealing surfaces before assembly, replace deteriorated seals as required, refill with the correct Volvo Penta-approved coolant, and check carefully for leaks after the engine reaches operating temperature.
Alternate/Superseded Part Numbers
- 21967279 – Volvo Group thermostat housing / water outlet
- 21692377 – Related Volvo Group reference sharing the same NSN classification for this water-outlet application
Confirm any substitution against the engine serial number before installation.
Parts Desk Insight
Volvo Group D13-family components can cross between several engine applications, but that does not automatically guarantee Volvo Penta fitment. Matching 21967279 to the engine serial number and thermostat-housing diagram is the safest approach.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 3–4 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
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We stand firmly behind the quality of every product we sell. Your confidence matters to us — 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.
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