aFe Black Filter GUARD Pre-Filter Wrap

Pre-filter protection for the specified air filter

aFe 28-10033 is a black pre-filter wrap that intercepts larger debris before it reaches the main air filter. Match the exact filter and its base, top and height dimensions.

Key Features

• Dry-weave polyester fabric; manufacturer states water and dirt repellency.
• Helps keep larger particles such as bugs and twigs away from the primary air filter.
• Washable with soap and water; inspect according to operating conditions.

Fitment

Use only with the exact filter part numbers, base, top and height dimensions in the manufacturer table below. The listed intake-system numbers are manufacturer associations, not a vehicle-wide application list. Match the actual filter and required wrap quantity; shorthand prefixes do not establish a two-wrap package. The wrap table lists 91120-family base dimensions as 9 x 7.5 inches, while individual pages also show 9 x 7.75. Its 91136-family base/top dimensions are 8.5 x 6.5 and 7 x 5 inches, versus current filter pages showing 8.25 x 6.25 and 7.25 x 5. Its 91146-family height is 7 inches, while individual pages also show 7.5. The 90106 rows print top dimensions of 7.33 x 9 inches. These unresolved dimensions are reproduced as published; verify the actual filter revision and wrap clearance rather than assuming interchangeability.

Heights in this table exclude the filter flange. N/A means the manufacturer table supplies no intake-system part number for that row; it does not establish universal vehicle fitment. Intake numbers shown are manufacturer-listed associations, not a new vehicle application table.

Specifications

What's Included

One pre-filter wrap. The underlying air filter, complete intake, clamps and couplers are not identified in an itemized package list for this wrap. The generic manufacturer fields say Filter Included and Coupler Included, but the detailed description identifies the pre-filter only; those fields do not independently confirm separate supplied components.

About aFe Power

aFe Power develops application-specific intake, filtration, exhaust, cooling, tuning, suspension, drivetrain, and truck-performance components supported by product testing and documented installation requirements.

Related Parts

• Exact manufacturer pre-filter compatibility table
• Shop the complete aFe Power collection

Frequently Asked Questions

Use only with the exact filter part numbers, base, top and height dimensions in the manufacturer table below. The listed intake-system numbers are manufacturer associations, not a vehicle-wide application list. Match the actual filter and required wrap quantity; shorthand prefixes do not establish a two-wrap package. The wrap table lists 91120-family base dimensions as 9 x 7.5 inches, while individual pages also show 9 x 7.75. Its 91136-family base/top dimensions are 8.5 x 6.5 and 7 x 5 inches, versus current filter pages showing 8.25 x 6.25 and 7.25 x 5. Its 91146-family height is 7 inches, while individual pages also show 7.5. The 90106 rows print top dimensions of 7.33 x 9 inches. These unresolved dimensions are reproduced as published; verify the actual filter revision and wrap clearance rather than assuming interchangeability.

No. It is an outer pre-filter for the specified air filter. It does not replace the main filter element or certify the fitment of a complete intake.

Use the exact filter part number, base dimensions, top dimensions and height shown in the table. The manufacturer table excludes flange height; similar-looking filters are not automatically interchangeable.

The detailed listing identifies the pre-filter wrap. A separately supplied main filter, intake assembly, clamp or coupling is not confirmed by an itemized package list.

The manufacturer specifies soap and water for the dry-weave wrap. Clean it as needed, allow it to dry, and service the underlying air filter separately according to its actual media instructions. No filter oil is listed for the wrap.

Inspect the wrap for debris accumulation, damage and secure fit based on dust exposure and operating conditions. It can help extend the main filter cleaning interval, but no guaranteed mileage interval is established.

No waterproof or submersion protection is established by this listing. The manufacturer describes water-repellent fabric, which does not certify the complete intake against water ingestion.

No vehicle-specific power gain or numeric airflow improvement is established for this wrap. Its function is to intercept larger debris while covering the specified primary filter.

Installation Instructions

Confirm aFe 28-10033 and the exact primary filter against the manufacturer table. Fit the wrap over the intended filter without damaging or distorting the filter or its seal. Check that it remains secure and clear of surrounding moving or hot components. No numeric installation torque is provided for this wrap.

Important Disclosures

California Proposition 65 warning: this product can expose you to chemicals known to the State of California to cause cancer and reproductive harm.