The aFe 31-10173 replaces the original airbox filter in the specified applications with oil-free synthetic media. The current manufacturer identifies Nissan350Z2007–2009 3.5L,370Z2009–2018 3.7L and InfinitiQX502014–2017 3.7L. This listing supplies ONE element; the manufacturer explicitly warns that some applications require quantity two. Exact per-part retailer detail names two filters for EX37/G25/G35/G37/Q40/Q60/QX50/350Z/370Z and limits the350Z application to production after November2006. Confirm both original housings before ordering; one item is not a complete two-filter service set. Existing EX35 and other Infiniti individual year ranges, later370Z2019–2020 and Nismo gaps remain bounded retailer-qualified scopes rather than new manufacturer all-engine approval. The current three-layer synthetic specification takes priority over retailer cotton, universal-fit or older two-layer descriptions. Missing named-trim rows seen in indexed retailer tables remain a separate detailed fitment follow-up; no broader model or year extension is inferred.
| Detail | Value |
|---|---|
| Current manufacturer family | 350Z2007–2009 3.5L;370Z2009–2018/QX502014–2017 3.7L; exact original housing required |
| Quantity | Sold individually; some applications require two filters. Confirm the vehicle requirement and order quantity separately |
| 350Z production qualifier | Exact retailer specifies manufactured after November2006; not blanket earlier VQ35 approval |
| Original wider rows | EX35/EX37/G25/G35/G37/Q40/Q60 and later370Z scopes retain original years and engine/housing qualifications |
| Media | Three oil-free synthetic layers per current exact manufacturer |
31-10173: verify the exact engine, original element and housing. Model or trim names alone do not establish all-engine interchangeability.
| Detail | Value |
|---|---|
| Manufacturer Part Number | 31-10173 |
| Media | Pro DRY S; oil-free synthetic media |
| Configuration | One OE-replacement air-filter element; original housing retained |
| Pleat description | Rounded open pleats; no verified numeric pleat depth on the exact current primary |
| Frame / seal | Polyurethane perimeter frame; progressive bump seal |
| Service | Washable oil-free synthetic media. Use the specified aFe POWER CLEANER, rinse appropriately and dry fully; do not apply air-filter oil. The current exact manufacturer specifies three layers of oil-free synthetic media. |
| Flow statement | No exact numerical airflow, horsepower or filtration-efficiency result is published on the current manufacturer page. A complete two-filter installation is not supplied as one item, and no performance gain is guaranteed. |
| Emissions | Exact manufacturer page states this filter does not require a CARB EO number; other modifications are not certified by that statement |
aFe Power develops application-specific intake, filtration, exhaust, cooling, tuning, suspension, drivetrain, and truck-performance components supported by product testing and documented installation requirements.
One Pro DRY S OE-replacement air-filter element for the verified housing and engine application described here; this is not a complete intake system.
Which application should I verify?The current manufacturer identifies Nissan350Z2007–2009 3.5L,370Z2009–2018 3.7L and InfinitiQX502014–2017 3.7L. This listing supplies ONE element; the manufacturer explicitly warns that some applications require quantity two. Exact per-part retailer detail names two filters for EX37/G25/G35/G37/Q40/Q60/QX50/350Z/370Z and limits the350Z application to production after November2006. Confirm both original housings before ordering; one item is not a complete two-filter service set. Existing EX35 and other Infiniti individual year ranges, later370Z2019–2020 and Nismo gaps remain bounded retailer-qualified scopes rather than new manufacturer all-engine approval. The current three-layer synthetic specification takes priority over retailer cotton, universal-fit or older two-layer descriptions. Missing named-trim rows seen in indexed retailer tables remain a separate detailed fitment follow-up; no broader model or year extension is inferred.
Is the Pro DRY S media oiled?Washable oil-free synthetic media. Use the specified aFe POWER CLEANER, rinse appropriately and dry fully; do not apply air-filter oil. The current exact manufacturer specifies three layers of oil-free synthetic media.
Does the flow percentage guarantee more engine power?No exact numerical airflow, horsepower or filtration-efficiency result is published on the current manufacturer page. A complete two-filter installation is not supplied as one item, and no performance gain is guaranteed.
How does this filter seal?Its progressive bump seal and full polyurethane perimeter frame conform to the original housing. The manufacturer says separate filter gaskets or sealants are not required; the existing housing must still close and secure correctly.
Are a hose coupler and cleaning kit supplied?The exact listing identifies an OE-replacement filter. A generic Coupler Included field does not establish a separate hose package; no airbox, tube, sensor, cleaner or oil bottle is documented as supplied.
Does one purchase service both airboxes?No. This item is sold individually. The current manufacturer warns that some applications need two; exact retailer detail identifies the relevant dual-filter Nissan/Infiniti engines. Verify the original system and order quantity before service.
When should I clean it?Inspect according to actual dust exposure and restriction. Washable oil-free synthetic media. Use the specified aFe POWER CLEANER, rinse appropriately and dry fully; do not apply air-filter oil. The current exact manufacturer specifies three layers of oil-free synthetic media. Use low-pressure rinse from the clean side toward the dirty side, let the element dry naturally before reinstalling. Do not use heat, compressed air or any filter oil. Do not treat an older general-care mileage example as a guaranteed interval for every vehicle or environment.
No vehicle-specific installation PDF or numeric airbox torque is linked on this exact manufacturer page. Follow the original housing service procedure and the correct oil-free Pro DRY S maintenance directions. Read the manufacturer media maintenance guidance.
31-10173: verify the original filter interface before operation.
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