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This product was last offered at the strikethrough price on
06-14-2026
This product was last offered at the strikethrough price on
06-14-2026
Unlock the full potential of your turbocharged N54 or N55 engine with the Turner Motorsport Stepped Intercooler. Whether you're running higher boost, track days, or just spirited street driving, this direct-fit upgrade is engineered to dramatically reduce intake air temperatures (IATs) and improve charge air flow for consistent, reliable performance.
Cooler air is denser air, and that means more oxygen per cycle for better combustion and more power. The factory intercooler quickly becomes a bottleneck under increased load or in warm conditions. Turner’s stepped intercooler solves that by offering an 80% increase in frontal surface area and cross-sectional flow, helping your BMW stay cooler and pull harder.
Constructed with high-quality cast aluminum end tanks and a bar-and-plate core, this intercooler delivers superior cooling efficiency and reduced pressure drop, even under sustained high-boost operation. The black powder-coated finish offers a clean, stealthy appearance, while the etched Turner logos add just the right touch of motorsport style.
Perfect for:
E82/E88 135i, E9X 335i/335xi, E84 X135i, E89 Z4 35i/35is
Key Features:
Direct-fit upgrade for E chassis N54 & N55 engines
Durable cast aluminum end tanks
High-efficiency bar-and-plate design
80% increase in frontal and cross-sectional area vs. stock
90% increase in charge air volume
Substantially lower IATs for improved power and reliability
Reduced and more consistent pressure drop
Lightweight design (under 20 lbs)
Dimensions: 520mm wide × 210mm tall × 130mm deep
Stealth black finish with Turner-etched logos
If you're looking to push your turbo BMW harder, the Turner Motorsport Stepped Intercooler is the cooling solution that keeps your engine running strong—pull after pull.
This BladeRunner Intercooler represents the next generation of intercoolers. Designed specifically for the 2007-2010 BMW 335i (E9X) L6-3.0L (tt) N54 engines, this BladeRunner intercooler utilizes a 5" bar and plate core design. This design outflows the factory tube and fin core design, while the 3/16" TIG-Welded end tanks offer superior strength and durability. In testing, this intercooler showed gains up to +14 horsepower and +18 lbs. x ft. without any type of tune, and dropped the intake air temperature up to 10 degrees.
End Tanks:
The unique BladeRunner end tanks are constructed out of 3/16" thick aluminum plates and include two 1/8" NPT ports for sensors or water-methanol injection.
5" Bar and Plate Core Design:
The use of the bar and plate core design allows for greater airflow and increased heat dissipation over the much smaller tube and fin design used by the factory.
TIG-Welded:
100% TIG-Welded inside and out by a certified craftsmen for strength and durability. TIG-Welding provides the strongest welds while reducing stress cracks.
Pressure Tested:
The BladeRunner Intercooler is test pressure rated at 200psi.
Perfect Fit:
Utilizes the factory mounting locations for a hassle-free installation. The billet 2 1/2" intercooler inlet utilizes a factory style quick connect to assure compatibility with the factory hot side inlet tube. The supplied cold side tube retains the factory style throttle body quick connect and retains the factory diverter valve connections. This kit will not work with the factory cold side intercooler tubing.
DETAILS:
Fits the following BMWs:
2007-2010 E9X 335i w/ N54
These 5-ply silicone reinforced couplers are capable of withstanding high temperatures and include new hose clamps. Designed for factory intercooler and aFe tubes.
Fits the Following BMWs:
E90 E92 E93 335i N54
Reinforced Silicone:
These couplings feature high temperature 5-Ply reinforced silicone material which meet or exceed SAEJ20 Standard.
Durable Couplings:
Allow for expansion, movement, and extreme vibration between two hard pipes while reducing the possibility of connections coming apart or having your hard pipe or other equipment break.
Note: This coupling kit fits aFe intercooler with tube (46-20152-B) Only.
Fits the following BMWs:
2007-2010 E9X BMW 335i w/ N54
This product was last offered at the strikethrough price on
09-28-2026
This product was last offered at the strikethrough price on
09-28-2026
When modifying the car and increasing boost, installing an upgraded intercooler is essential to keep the engine computer from restraining boost as temperatures climb. The stock air-air intercooler is quickly overcome with heat and can't keep the intake air cool enough. If it's too hot the engine computer will reduce power to safer levels. A Dinan intercooler is much larger than stock, providing more surface area for cooling air to pass through. Even heat soak at low speeds is reduced, making this a worthwhile addition even for stock or mildly tuned engines. The E92/E93 335i Dinan intercooler is 93% larger than stock but is a direct replacement with only minor trimming of plastic undertrays required for installation. The factory charge piping in and out of the intercooler is re-used.
For over 35 years, Dinan has been America's premier tuning company, pioneering advancements in BMW modification while retaining a focus on balanced performance that preserves the original character and driving feel that a BMW offers. When you install a Dinan part on your car, know that it's not only carefully developed and tested, but that Dinan stands behind it with a four year, 50,000-mile warranty. Dinan believes so fully in their “total package” approach that once your car has been fitted with enough of their parts, they celebrate your conversion from stock to Dinan with an exclusive trunk badge, displayed proudly by BMW enthusiasts everywhere. The intercooler is worth 2 points towards your Dinan badge.
This item fits the following BMWs:
2007-2010 E92 BMW 335i 335xi - Coupe
2007-2010 E93 BMW 335i - Convertible
These 5-ply silicone reinforced couplers are capable of withstanding high temperatures and include new hose clamps. Designed for aFe intercooler and aFe tubes.
Fits the Following BMWs:
E90 E92 E93 335i N55
This fully TIG-welded bar & plate design intercooler from aFe is 25% larger than stock, outflowing the factory intercooler and tubes by 21% and substantially lowering intake temperatures. Intercooler and tubes bolt into place with factory-style connections.
Fits the Following BMWs:
E90 E92 E93 335i N55