Airaid 520-538 PowerAid Throttle Body Spacer 2004-2014 Nissan Titan/Armada 5.6L

Vehicle Fitment

• 2004-2014 Nissan Titan (All Trims, V8-5.6L, 2WD/4WD)
• 2004 Nissan Pathfinder Armada (Base, V8-5.6L, 4WD) - legacy first-year sub-model
• 2005-2014 Nissan Armada (LE, SE, V8-5.6L, 2WD/4WD)
• 2004-2010 Infiniti QX56 (Base, V8-5.6L, 4WD)

Fitment Notes

• Fits V8-5.6L engine only across all compatible platforms.
• The 2004 Nissan Pathfinder Armada is the legacy first-year model sold under the Pathfinder name before Armada became its own standalone nameplate in 2005 - both are supported.
• CARB EO number D-609-10 - not legal for sale or use in California on most pollution-controlled vehicles. Some specific models and years may be CA legal; verify in the Airaid application listings for your specific vehicle.
• Installs between the throttle body and intake manifold - no drilling or cutting required.

Features

• Patented Helix Bore design spins the incoming air charge as it passes through the spacer, increasing air velocity and improving air/fuel mixture atomization in the combustion chamber.
• Increases off-idle torque from approximately 800 RPM up to 3,000 RPM for stronger low-end and mid-range power delivery.
• Precision CNC-machined from aircraft-grade 6061-T6 billet aluminum for long-term durability and reliable airflow control.
• Sharpens throttle response for a more immediate and energetic feel from initial pedal input.
• True bolt-on upgrade - installs in under an hour with common hand tools, no cutting or modifications required.

Specifications

• Part Number: 520-538
• Product Line: AIRAID PowerAid
• Design: Patented Helix Bore
• Material: 6061-T6 billet aluminum
• Finish: Black anodized
• Thickness: 1 in. (25 mm)
• Spacer Type: 4-Barrel Open
• Position: Between throttle body and intake manifold
• CARB EO Number: D-609-10 (verify CA legality per vehicle)
• Weight: 0.7 lb (0.3 kg)
• Warranty: 12 months / 24,000 miles
• Installation Time: Under 1 hour

Included Components

• 1x Airaid PowerAid Throttle Body Spacer (520-538)
• 1x Precision-cut gasket set
• 1x Hardware and mounting kit
• 1x Application-specific brackets

Product Description

The Airaid 520-538 PowerAid Throttle Body Spacer is a bolt-on torque and throttle response upgrade for the 2004-2014 Nissan Titan, 2004-2014 Nissan Armada (including the 2004 Pathfinder Armada), and 2004-2010 Infiniti QX56, all equipped with the V8-5.6L engine. Precision-machined from 6061-T6 billet aluminum, it installs between the throttle body and intake manifold where Airaid's patented Helix Bore imparts a spinning rotation to the incoming air charge - boosting velocity and improving atomization of the air/fuel mixture before combustion.

The result is a noticeable increase in off-idle and mid-range torque from 800 to 3,000 RPM, with sharper throttle response across daily driving, towing, and highway use. Installation is a straightforward bolt-on process completed in under an hour with common hand tools - no cutting, drilling, or engine modifications required. All necessary gaskets, hardware, and brackets are included. Note that California emissions legality varies by specific year and model - verify via Airaid's application listings before purchasing.