Volvo Penta Air Filter Insert 21702999 | OEM D4 D6 D9 D11 Diesel
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Volvo Penta OEM Air Filter Insert — D4 / D6 / D9 / D11 Diesel
Part Number: 21702999 | SKU: 21702999
Brand: Volvo Penta | Official Product Type: Air Filter Insert
System: Engine Intake / Air Filtration
Weight: Approx. 0.54 kg (1.2 lb)
Supersedes: 3842879, 3818541, 3583654
The genuine Volvo Penta OEM air filter insert for D4, D6, D9, and D11 diesel marine engines. This filter protects the engine’s intake system by capturing dust, dirt, and airborne particulates before they reach the combustion chamber — maintaining clean air delivery for proper combustion, fuel efficiency, and long engine life.
Key Features
- Genuine Volvo Penta OEM replacement air filter insert
- Protects the intake system from dust, dirt, and airborne contaminants
- Supports clean combustion and optimal engine performance
- Supersedes earlier part numbers 3842879, 3818541, and 3583654
- D9 and D11 applications may require two filter inserts depending on engine configuration — confirm with your parts diagram
- Direct OEM replacement — no modification required when correctly matched
Compatible Applications
- Volvo Penta D4 diesel marine engine family
- Volvo Penta D6 diesel marine engine family
- Volvo Penta D9 diesel marine engine family (may require 2 inserts)
- Volvo Penta D11 diesel marine engine family (may require 2 inserts)
- Confirm exact fitment using your engine serial number and current installed filter — intake housing configuration varies by engine generation and variant
Superseded Part Numbers
Part 21702999 supersedes the following earlier Volvo Penta part numbers:
- 3842879
- 3818541
- 3583654
If your engine currently uses one of these older part numbers, 21702999 is the current OEM replacement.
Service Interval
Replace the air filter insert at every scheduled engine service interval or when the filter shows signs of restriction, contamination, or damage. Volvo Penta recommends inspection at each annual service — replace more frequently in dusty or high-particulate environments. A restricted air filter reduces engine power, increases fuel consumption, and can cause excessive exhaust smoke.
Installation Notes
- Remove the old filter and inspect the air filter housing for dirt, oil residue, or damage to sealing surfaces
- Install the new insert fully seated in the housing with the correct orientation
- Ensure the intake assembly is fully closed and sealed before running the engine
- Never run the engine with the air filter removed
- On D9 and D11 engines, confirm whether your configuration requires one or two inserts before ordering
Parts Desk Insights
Best Use Case: This is a straightforward annual maintenance item for Volvo Penta D4, D6, D9, and D11 diesel owners. It’s most commonly ordered during scheduled service or when a customer notices reduced power or increased smoke — both common signs of a restricted air filter. The supersession history (three previous part numbers) means some customers may be searching by an older number; all three cross to 21702999.
Common Questions: The most frequent question is whether one or two filters are needed — D4 and D6 engines typically use one insert, while some D9 and D11 configurations use two. Always check the parts diagram for your specific engine serial number to confirm. Customers also ask about aftermarket alternatives — while aftermarket options exist (e.g., REC21702999), the OEM insert ensures the correct fit and filtration rating for the Volvo Penta housing.
Technical FAQ
Q: How do I know if my air filter needs replacing?
A: Common signs include reduced engine power, increased exhaust smoke, higher fuel consumption, or a visibly dirty/collapsed filter element. Annual inspection is recommended regardless of visible condition.
Q: My engine uses part number 3842879 — is 21702999 the correct replacement?
A: Yes — 21702999 is the current Volvo Penta OEM part that supersedes 3842879, 3818541, and 3583654.
Q: Do I need one or two filters for my D9 or D11?
A: It depends on your specific engine configuration. Check the parts diagram for your engine serial number, or contact us with your serial number for confirmation.
Q: Can I clean and reuse the filter insert?
A: Volvo Penta air filter inserts are designed as replaceable elements and are not intended for cleaning and reuse. Replace with a new OEM insert at each service interval.
Related Parts
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:
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