Volvo Penta Coolant Pump 21931911
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Volvo Penta 21931911 is a genuine OEM engine coolant pump used in the closed-loop cooling system on applicable Volvo Penta diesel engines. The pump circulates coolant through the engine and cooling circuit to help maintain proper operating temperature. Volvo Penta 21931911 has been superseded by 23033741, which is the current replacement coolant pump.
Key Features
- Genuine Volvo Penta OEM coolant pump
- Original part number 21931911
- Current replacement part number 23033741
- Used as the primary coolant circulation pump
- Confirmed in the D8A1-A MP cooling-system assembly
- Works with the factory coolant-pump housing, pulley, gasket, O-rings and hose connections
Engine Compatibility
Confirmed catalog application includes:
- Volvo Penta D8A1-A MP
The D8A1-A MP cooling-system breakdown lists 21931911 and replacement 23033741 in the same coolant-pump position, along with remanufactured pump references 3801728 and 3801749.
Serial Number Fitment Notice
Confirm 21931911 / 23033741 against the engine serial number before ordering. Volvo Penta cooling-system components and pump revisions can vary by production range and engine configuration, so serial-number verification remains the safest way to confirm exact fitment.
When This Part Needs Replacement
Replace the coolant pump if there is confirmed coolant leakage, bearing or shaft play, abnormal pump noise, physical damage, or inadequate coolant circulation. Persistent overheating should be diagnosed carefully because thermostats, coolant restrictions, belt-drive problems, or other cooling-system components can produce similar symptoms.
Installation Notes
The applicable cooling-system assembly shows the pump working with:
- 21680904 – Pulley
- 22329334 / 23002903 – Coolant pump housing
- 979099 – Gasket
- 1676622 – Quick coupling
- 981250 – Hose nipple
- 22909943 – O-ring
- 990821 – O-ring
Inspect the pulley, housing, seals and adjoining coolant connections while the pump is accessible. Clean all mating surfaces, follow the applicable Volvo Penta tightening specifications, refill with the correct coolant, and verify leak-free operation after installation.
Alternate/Superseded Part Numbers
- 21931911 – Original Volvo Penta coolant pump
- 23033741 – Current Volvo Penta replacement / superseding coolant pump
- 3801728 – Remanufactured coolant-pump reference in the same application
- 3801749 – Remanufactured coolant-pump reference in the same application
Parts Desk Insight
The key update on this pump is the supersession: 21931911 now crosses to 23033741. When replacing it, inspect the pump housing, pulley and seals at the same time so worn surrounding components do not create another cooling-system repair shortly afterward.
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
Returns & Satisfaction Guarantee
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.
We are serious about product integrity — 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.