Volvo Penta Neutralizing Agent 21687793
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Volvo Penta 21687793 is a genuine OEM neutralizing agent / Neutra-Salt concentrate used for flushing selected Volvo Penta marine cooling systems. Volvo Penta's official parts shop identifies part 21687793 as Neutra-Salt Concentrate, and current dealer listings consistently describe it as a genuine Volvo Penta neutralizing agent for marine use.
This product is intended for saltwater-cooled engine applications equipped with an engine-driven raw-water or sea-water pump. Current parts listings describe it as a simple way to help flush the engine and cooling system, remove salt deposits, and leave a corrosion-inhibiting protective film on internal metal surfaces.
Key Features
- Genuine Volvo Penta OEM maintenance product
- Part number: 21687793
- Official Volvo Penta product name: Neutra-Salt Concentrate
- Helps remove salt deposits from raw-water cooled systems
- Helps reduce internal corrosion by leaving a protective inhibitor on metal surfaces
- Common retail packaging references show it as approximately 0.95 L / 1 quart concentrate
Engine Compatibility
Volvo Penta 21687793 is not a model-specific hard part in the same way as a gasket or relay. Current product references position it as a maintenance chemical for Volvo Penta marine engines and drives that use an engine-driven raw-water / sea-water pump, including systems where the Neutra-Salt flushing setup is used on inboards and sterndrives. Application should be confirmed against the engine's cooling-system setup before ordering.
Serial Number Fitment Notice
Please confirm suitability by engine or drive serial number and by the cooling-system configuration before ordering. Volvo Penta's official parts guidance directs owners and technicians to identify the exact engine, shield, or drive when selecting the correct parts and maintenance items.
When This Part Needs Replacement
Replace or replenish this neutralizing agent when:
- the flushing bottle or supply is empty or low
- regular salt-removal maintenance is due
- the boat operates in salt, brackish, or high-mineral water
- you are servicing a Volvo Penta flushing system and need fresh concentrate for continued corrosion protection
Installation Notes
- Verify the engine uses the correct raw-water / sea-water pump flushing arrangement before purchase.
- Use the product as part of the Volvo Penta flushing process for applicable systems.
- Keep the concentrate sealed and clean between uses.
- Follow Volvo Penta service guidance for the specific engine and flushing setup.
Alternate/Superseded Part Numbers
Current reviewed sources consistently identify this product as 21687793. The sources reviewed did not establish a confirmed superseded Volvo Penta part number for this item.
Parts Desk Insight
For boats that stay in salt water or run often in brackish conditions, products like Neutra-Salt can be a smart preventative-maintenance item rather than a repair item. Salt buildup and internal corrosion usually develop gradually, so regular flushing tends to be far cheaper than waiting until cooling-system components begin to suffer from scaling or corrosion-related failures. This is especially relevant on engines using raw-water cooling paths.
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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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