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aFe MagnumFORCE Stage-2 Si PRO DRY S Intake System; Incl. Air Filter/Sealed Molded Housing w/Cover/CAD Designed Roto-Molded Intake Tube; +21 HP/+55 Lbs. x Ft. Torque; FORD F-250 SUPER DUTY


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Part #: 51-81872
Notes: MagnumFORCE Stage-2 Si PRO DRY S Intake System
Incl. Air Filter/Sealed Molded Housing w/Cover/CAD Designed Roto-Molded Intake Tube
+21 HP/+55 Lbs. x Ft. Torque
MSRP: $510.00
Your Price: $425.00
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This Item Also Available In

Part Number Price Notes & Specs
75-81872-0 $437.00 Notes MagnumFORCE Stage-2 Si Pro-GUARD 7 Intake System
Incl. Air Filter/Sealed Roto-Molded Housing/CAD Designed Roto-Molded Intake Tube
+21 HP/+55 Lbs. x Ft. Torque
54-81872 $425.00 Notes MagnumFORCE Stage-2 Si PRO 5R Intake System
Incl. Air Filter/Roto-Molded Sealed Intake Housing/CAD Designed Roto-Molded Intake Tube
+21 HP/+55 Lbs. x Ft. Torque
54-81872-1 $425.00 Notes MagnumFORCE Stage-2 Si PRO 5R Intake System
Incl. Air Filter/Roto-Molded Sealed Intake Housing w/Cover/CAD Designed Roto-Molded Intake Tube
+21 HP/+55 Lbs. x Ft. Torque
75-81872-1 $437.00 Notes MagnumFORCE Stage-2 Si Pro-GUARD 7 Intake System
Incl. Air Filter/Sealed Roto-Molded Housing w/Cover/CAD Designed Roto-Molded Intake Tube
+21 HP/+55 Lbs. x Ft. Torque

All Fitments

FORD
Year Model SubModel Cylinders Liter Aspiration Eng Desg. Fuel Notes
2011 - 2015 F-250 SUPER DUTY ALL V8 6.7 ALL ALL ALL
2011 - 2015 F-350 SUPER DUTY ALL V8 6.7 ALL ALL ALL

Product Description

If you want to maintain a factory appearance the aFe Stage 2 Si Sealed Air Box provides quiet performance and industry-leading power gains.

Features

  • Ram Air Scoop – Built-in ram scoop forces cold air to filter for greater efficiency and performance gains.
  • Clamp Stops – Raised stops on aFe tubes provide a more secure seal and eliminate slippage versus flat, straight tubes.
  • 3-Angle Adapter – Specially developed velocity stack with 3 different angles dramatically increase airflow from the filter to the intake tube.
  • Quality Hardware – aFe uses only top-quality hardware like stainless steel button head bolts and brass inserts.
  • MAF Sensor Pad – Precision tuned MAF Sensor Pad will not affect vehicle performance or produce check engine light warnings.
  • 3 Filter Media Choices – Choose from the Pro 5R, Pro Dry S or Pro-GUARD 7 Filter.

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