Injen Cold Air Intake SP1126 – BMW 135i / 335i (N55)

OVERVIEW

The SP series is Injen Technology's flagship line of traditional aluminum intake systems. Injen was the world's first tuned air intake manufacturer and holds four patents covering the intake tuning process. This kit carries several of those patented technologies, including MegaRam (MR) Technology (patents 7,359,795 and 7,669,571) and Air Fusion (patent 7,721,669).

At the center of the system is a 6061-T6 aluminum intake tube that gives air a smooth, uninterrupted path into the N55. A fully functional ram air scoop feeds cool air directly to the filter, and Injen tuned the system to deliver power while holding a safe air/fuel ratio across the power band, so no additional tuning is required.

A fully serviceable SuperNano-Web dry air filter provides increased surface area for greater airflow and strong filtration, and the system produces an aggressive, throaty tone under full throttle. The kit is offered in polished and wrinkle black finishes and is covered by the Injen Technology Limited Lifetime Warranty.

SPECS

• Short ram air intake design
• Dyno-proven gains of up to 15 hp and 18 lb-ft of torque
• Injen patented Air Fusion Technology
• Fully functional ram air scoop directs cool air into the air filter
• 6061-T6 aluminum intake tubing
• Available in polished or wrinkle black finish
• Fully serviceable Injen SuperNano-Web dry air filter
• Replacement air filter part number X-1021-BB
• Optional hydro-shield part number 1037BLK or 1037RED
• Maintains factory air/fuel ratios; no additional tuning required
• Retains the OEM mass air flow sensor
• Smooth intake piping eliminates restrictions and improves airflow
• Aggressive engine tone under full throttle
• Shipping weight 13.0 lb; package 14" W x 9" H x 36" L
• Does not fit vehicles equipped with active steering
• CARB EO # D-476-8, applicable to 2011–2012 model years only
• Made in Pomona, California, USA
• Injen Technology Limited Lifetime Warranty

PARTS INCLUDED

• Two-piece air intake tubes (#1021)
• 3.50" Web Nanofiber dry air filter
• 0.25" ID x 0.625" long aluminum spacer (M-10017)
• 3.00" to 3.25" step hose
• 3.00" straight hose (#3044)
• #048 clamps (#4004)
• Power steering cup with bracket (#20088)
• Front mount air scoop
• M4 button head screws (#6072)
• M6 flange nuts (#6002) — three used on the 135i, two used on the 335i
• M6 x 35mm stainless button head screw
• M6 x 10mm stainless button head screws (#6083)
• Fender washer
• Grommet

TECH RESOURCES

Additional Parts Required

• None. Injen specifies no additional hardware for this part, and no tune is required.
• Installer-supplied: metric socket and wrench set, flat-blade screwdriver, and a torque wrench.
• Optional service items: replacement SuperNano-Web dry filter X-1021-BB, hydro-shield 1037BLK or 1037RED, and an Injen dry filter cleaning kit.

Installation

• Injen SP1126 installation instructions (PDF)

Notes

• The product title lists 2011–2012. Injen's official catalog covers 2011–2013 for this part; the CARB EO applies only to the 2011–2012 model years. Confirm fitment with Speed Logic if your car is a 2013.

PART NUMBER

• SP1126P — Polished
• SP1126WB — Wrinkle Black

VEHICLE APPLICATIONS