aFe Momentum GT Pro 5R Cold Air Intake – BMW 135i / 335i (E8x / E9x, N55)

OVERVIEW

Want more power out of your N55? The aFe Power Momentum GT Pro 5R cold air intake replaces the factory airbox on the BMW 135i, 335i and X1 35ix with a fully sealed system built for airflow. It flows 400 CFM at 7" H₂O, a 26% increase over stock, for gains of up to +12 horsepower and +14 lbs. x ft. of torque.

A one-piece roto-molded housing in heat-soak-resistant black cross-linked polyethylene eliminates the multi-piece factory box and keeps the intake charge cool, and a built-in sight window lets you check the filter without pulling anything apart. An auxiliary air inlet feeds additional cool air, with a urethane plug supplied if you would rather seal the box completely.

The system is built around the largest filter the space allows: a 9" tall inverted-top Pro 5R element on a 6-3/4" x 4-3/4" oval flange, with five layers of progressively finer mesh oiled cotton gauze on a 100% polyurethane frame. aFe rates the Pro 5R media at 98.6% filtration efficiency, so it keeps flowing well even as it loads up.

SPECS

• Measured airflow: 400 CFM @ 7" H₂O
• Dyno-tested gains: +12 HP and +14 lbs. x ft. of torque (peak)
• Outflows the factory intake by 26%
• Filter media: aFe Pro 5R oiled, 5-layer progressively finer mesh cotton gauze (aFe P/N 24-90089)
• Filtration efficiency: 98.6% (aFe rating for Pro 5R media)
• Filter size: 9" tall inverted-top element with a 6-3/4" x 4-3/4" oval flange
• Filter frame: 100% polyurethane for long life and multiple cleaning cycles
• Housing: one-piece CAD-designed roto-molded black cross-linked polyethylene, heat-soak resistant, with auxiliary air inlet and built-in filter sight window (aFe P/N 05-76313B2)
• Intake tube: CAD-designed, dyno-tuned roto-molded plastic (aFe P/N 05-76313B1)
• Urethane plug included to completely seal the airbox if desired
• Installation: direct bolt-on with aFe’s patent-pending filter-to-housing interface — no cutting or drilling of factory parts
• Emissions status: not CARB exempt at this time — not legal for sale in California or for use on any vehicle registered with the California Department of Motor Vehicles.

PARTS INCLUDED

• Pro 5R air filter (24-90089) — 1
• Housing (05-76313B2) — 1
• Intake tube (05-76313B1) — 1
• Urethane plug (05-01225) — 1
• M4 Torx screw (03-50490) — 2

TECH RESOURCES

Additional Parts Required

• None. aFe Power specifies no additional hardware, tune or fluids for this intake — it is a direct bolt-on kit that requires no cutting or drilling of factory parts.
• Installer-supplied: basic hand tools, including a T-handle or driver for M4 Torx screws and a nut driver for the hose clamps.
• Optional service item: the Pro 5R filter is a washable, re-usable oiled cotton-gauze element and must be re-oiled with aFe filter oil after each cleaning.

Installation

• aFe Power 51-76313 / 54-76313 installation instructions (PDF)

Notes

• Year ranges above follow aFe Power’s current installation instructions. Confirm fitment with Speed Logic before ordering.

PART NUMBER

• 54-76313

VEHICLE APPLICATIONS