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The aFe 31-10211 replaces the original airbox filter in the specified applications with oil-free synthetic media. The exact current manufacturer identifies X3 E83 2006β2010 and Z4 E85/E86 2006β2008 with the N52 3.0L engine. Exact ECS and Element Wheels engine tables likewise identify N52, while the exact ML Performance North America table retains X3 3.0i 2005β2006. That original early row is preserved as an unresolved engine/year/housing source conflict, not newly certified M54 interchange and not a claim of physical incompatibility. Original later X3 3.0si/xDrive30i and Z4 coupe/roadster individual ranges remain unchanged. An unbounded ECS sDrive30i entry does not establish a new later E89 Z4 application. The current primary overview contains cotton-gauze wording while the manufacturer Pro DRY S media guidance and exact specialist description identify oil-free synthetic filtration; do not apply oil based on the overview phrase. Its published three-layer and 99.2 percent media statements are not independent boxed-revision inspection.
| Detail | Value |
|---|---|
| BMW X3 E83 N52 | Current primary 2006β2010; original 3.0si 2007β2008 and xDrive30i 2009β2010 retained |
| Early X3 3.0i | Original 2005β2006 retailer-positive row retained as engine/housing source conflict; not blanket M54 approval |
| BMW Z4 E85/E86 | Original 2006β2008 Coupe 3.0si / Roadster 3.0i / Roadster 3.0si bounds retained |
| Later Z4 | No E89 or unbounded sDrive30i application newly inferred |
| Media-source qualification | Current three-layer/99.2 percent statement versus overview cotton phrase; oil-free synthetic service remains required |
31-10211: verify the exact engine, original element and housing. Model or trim names alone do not establish all-engine interchangeability.
| Detail | Value |
|---|---|
| Manufacturer Part Number | 31-10211 |
| 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 | The exact current manufacturer publishes 99.2 percent Pro DRY S media efficiency but no numerical airflow-gain or engine-power test for this element. This is a published media rating, not a guaranteed installed-engine result. |
| 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 exact current manufacturer identifies X3 E83 2006β2010 and Z4 E85/E86 2006β2008 with the N52 3.0L engine. Exact ECS and Element Wheels engine tables likewise identify N52, while the exact ML Performance North America table retains X3 3.0i 2005β2006. That original early row is preserved as an unresolved engine/year/housing source conflict, not newly certified M54 interchange and not a claim of physical incompatibility. Original later X3 3.0si/xDrive30i and Z4 coupe/roadster individual ranges remain unchanged. An unbounded ECS sDrive30i entry does not establish a new later E89 Z4 application. The current primary overview contains cotton-gauze wording while the manufacturer Pro DRY S media guidance and exact specialist description identify oil-free synthetic filtration; do not apply oil based on the overview phrase. Its published three-layer and 99.2 percent media statements are not independent boxed-revision inspection.
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?The exact current manufacturer publishes 99.2 percent Pro DRY S media efficiency but no numerical airflow-gain or engine-power test for this element. This is a published media rating, not a guaranteed installed-engine result.
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.
Is the earlier X3 3.0i row fully manufacturer-certified here?No. Exact retailer detail positively retains it, but the current N52 manufacturer heading and the earlier engine/year scope conflict. Verify the original element and housing; shared E83 naming or displacement is not sufficient proof.
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.
31-10211: verify the original filter interface before operation.
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