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Maximum Airflow, Minimum Restriction for the 2003-2009 Toyota 4Runner
The aFe Magnum FORCE cold air intake system 59-81162 is engineered to replace the restrictive factory airbox with a free-flowing high-density polymer intake tube and oversized Pro DRY S filter, delivering measurably improved throttle response and horsepower gains across the RPM range. The 59-81162 draws cooler, denser air from outside the engine bay to maximize combustion efficiency, supported by a heat-shielded housing that keeps intake temperatures down even in stop-and-go conditions. CARB EO compliant. This is a direct bolt-on intake requiring no cutting or modification, making it one of the highest-return modifications available for any build.
Key Features
- Replaces restrictive OEM airbox for measurable hp and torque gains
- Oversized Pro DRY S filter with dry flow media for maximum airflow
- Housing: high-density polymer construction for lightweight rigidity
- Designed to minimize heat soak and maintain cool intake charge temperatures
- Direct bolt-on installation using factory mounting points, no cutting required
- Reusable and washable filter for long service life
- CARB Executive Order compliant for use in California
- Compatible with factory MAF sensor and all OEM electronic connections
Fitment
| Year Range | Make | Model | Trim |
|---|---|---|---|
| 2003-2009 | Toyota | 4Runner | Limited |
| 2003-2009 | Toyota | 4Runner | SR5 |
| 2003-2009 | Toyota | 4Runner | Sport |
| 2005-2009 | Toyota | Tacoma | |
| 2005-2009 | Toyota | Tacoma | Pre Runner |
| 2005-2009 | Toyota | Tacoma | X-Runner |
| 2007 | Toyota | FJ Cruiser | TRD Special Edition |
| 2007-2009 | Toyota | FJ Cruiser | |
| 2008 | Toyota | FJ Cruiser | Trail Teams Special Edition |
| 2011 | Toyota | Tacoma | Pre Runner |
| 2011 | Toyota | Tacoma | X-Runner |
Specifications
| Detail | Value |
|---|---|
| Part Number | 59-81162 |
| Brand | aFe Power |
| Product Line | aFe Magnum FORCE |
| Filter Media | Pro DRY S |
| Housing Material | High-Density Polymer |
| CARB Compliance | Yes |
| UPC | 802959593387 |
What's Included
- aFe Magnum FORCE cold air intake system (59-81162)
- Pro DRY S air filter
- Intake tube and all required hardware
- Heat shield (if applicable)
- Installation instructions
Frequently Asked Questions
Will this intake trip the check engine light?The aFe Magnum FORCE is designed to work with the factory MAF sensor and ECU. On properly installed systems, check engine lights are rare. If an issue arises, it is typically resolved by checking all connections and confirming the MAF sensor is properly seated.
Can I use this intake for daily driving and track use?Yes. The 59-81162 is a street/track intake suitable for daily driver use and spirited driving alike. The Pro DRY S filter handles a wide range of operating conditions without compromising filtration efficiency.
How often does the filter need to be cleaned?Under normal conditions, the Pro DRY S filter can go 30,000 to 50,000 miles between cleanings. In dusty or off-road environments, inspect it more frequently. aFe Power sells dedicated filter cleaning kits for the correct maintenance procedure.
Will this intake void my factory powertrain warranty?Under the Magnuson-Moss Warranty Act, a dealer cannot void your warranty simply because you installed an aftermarket intake. They would need to prove the intake directly caused any specific issue. As always, confirm with your dealership for details on your specific coverage.
Is this intake compatible with a forced induction setup?The 59-81162 is designed for naturally aspirated or OEM-forced induction applications. If running an aftermarket supercharger or turbo kit, verify intake sizing and placement with your tuner before ordering.
Does this intake require a tune?In most applications, the aFe Magnum FORCE is a plug-and-play bolt-on that does not require a tune. Performance gains from a tune paired with this intake will be greater, but tuning is not required for safe operation in stock-configuration vehicles.
Does this work with an intake pre-filter?Yes. aFe Power offers Magnum SHIELD pre-filter sleeves that slip over the main filter to extend service intervals in dusty conditions. The pre-filter is especially useful for off-road and agricultural environments.
What is the return and warranty policy on this intake?aFe Power backs their intakes with a limited manufacturer warranty covering defects in materials and workmanship. Contact us or aFe Power directly for full warranty terms. Products must be in new, uninstalled condition for returns.
Installation Overview
- Disconnect the negative battery terminal and allow the engine to cool completely
- Remove the factory airbox cover, air filter, and intake tube assembly
- Disconnect the MAF sensor connector and any crankcase ventilation hoses
- Remove factory airbox mounting hardware and set aside
- Install the aFe intake tube using the supplied clamps and brackets
- Reconnect the MAF sensor and all crankcase vent hoses to the new tube
- Seat the new Pro DRY S filter onto the intake tube and secure with the clamp
- Install the heat shield if included, routing away from hot engine components
- Reconnect the battery and start the engine to confirm normal operation
- Clear any stored codes if present, then test drive to verify performance
WARNING: This product can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and reproductive harm. For more information go to www.P65Warnings.ca.gov.
aFe
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