aFe Momentum Stage 2 Dry S Intake 51-82202 – BMW M235i / 335i / 435i (N55)

OVERVIEW

The aFe Power Momentum Stage 2 Si sealed intake system replaces the factory airbox on N55-powered BMW models. On aFe's dyno it produced up to 11 horsepower and 15 lbs. x ft. of torque, and it outflows the factory intake by 37%.

The filter is housed in a one-piece, patent-pending black roto-molded housing that keeps warm engine air out. A clear sight window molded into the housing lets you inspect the filter without taking anything apart, and horizontal louvers feed extra cold air to the element. A patent-pending filter-to-housing interface simplifies installation while allowing the largest practical filter size.

A C.A.D. designed intake tube was engineered to release the available horsepower while fitting the engine bay precisely. The kit arrives complete with all necessary hardware.

SPECS

• +11 HP and +15 lbs. x ft. torque maximum gains
• Outflows the factory intake by 37%
• 7-1/2" tall conical Pro DRY S air filter
• Three progressive layers of synthetic filter media; oil-free, cleans with soap and water
• One-piece sealed roto-molded housing in black with built-in clear sight window
• Horizontal louvers in the housing increase cold airflow to the filter
• Patent-pending filter-to-housing interface maximizes filter size
• C.A.D. designed intake tube
• All necessary hardware included

PARTS INCLUDED

• Pro DRY S air filter (21-91063)
• Intake tube (05-82202B1)
• Housing (05-82202B2)
• Screw, M4 (03-50221) x2
• Clamp, #096 (03-50003)
• Grommet (03-50033)
• Cap, 1/2" (03-50103)
• Vacuum line fitting (05-01246)
• Torx bit (03-50066)

TECH RESOURCES

Additional Parts Required

• None. aFe Power specifies no additional hardware for this part.
• Service item, not required: replacement Pro DRY S air filter 21-91063.
• Pro DRY S media is cleaned with soap and water — no filter oil is needed.

Installation

• aFe Power 51-82202 installation instructions (PDF)

PART NUMBER

• 51-82202 — Momentum Stage 2 Si intake with Pro DRY S oil-free filter
• Pro 5R oiled-filter version: 54-82202 — aFe Momentum Pro 5R Oil Stage 2 Si Intake 54-82202

VEHICLE APPLICATIONS