BMW N54 Single Turbo Kit ACF EFR 8374 Twin Scroll Bottom Mount 335i Complete

For sale is a complete ACF Custom Twin-Scroll BorgWarner EFR 8374 bottom-mount single turbo kit for the BMW N54 platform. This is one of the most proven, highest-performing bottom-mount setups available for the N54. This exact kit made 750whp on full E85 (Map 5) with proper fueling and tuning. Capable of 700–850whp depending on supporting mods, boost level, and fuel quality. ⸻ ✔️ WHAT’S INCLUDED • ACF twin-scroll bottom-mount manifold • BorgWarner EFR 8374 turbocharger (ideal for fast spool + high top-end) • External wastegate setup • All AN oil lines & coolant lines • 4-Port MAC solenoid (for precise boost control) • V-band connections • All hardware & fittings included This is a full kit — everything you need to bolt onto your N54. ⸻ ✔️ PERFORMANCE • Made ~750whp on my 335i with full E85 • Capable of 35+ psi with proper supporting mods • Spools fast thanks to twin-scroll design • Pulls hard all the way to redline • Perfect for high horsepower street or drag setups ⸻ ✔️ FITMENT Fits all N54-powered BMWs: • 2007–2010 BMW 335i / 335xi • 2008–2010 BMW 135i • 2008–2010 BMW 535i • Any N54 swapped chassis Will work with manual or automatic transmissions. ⸻ ✔️ CONDITION Used but in excellent working order. Removed from a running 2007 335i. No cracks, no issues, no damaged threads. ⸻ ✔️ WHY THIS KIT IS SPECIAL Unlike top-mount or cheap generic kits, this ACF bottom-mount setup features: • OEM-like fitment • Fast spool from twin-scroll architecture • High efficiency from the EFR 8374 • Clean engine bay look • Strong, proven reliability at 700+ whp This is the gold standard for N54 single turbo setups. ⸻ ✔️ PRICE $3,800 This kit is hard to find and sells fast — priced to move. ⸻ Shipping Willing to ship in the U.S. Package will be boxed securely with padding. ⸻ Buy with confidence This is a complete, tested, high-power turbo kit ready to bolt on and go. Serious buyers only — message with questions.

• Brand: Garrett
• Type: Turbo Kit
• Manufacturer Warranty: 1 Year
• Color: Silver
• Features: Individual
• Item Length: 10 cm
• Universal Fitment: No
• Item Width: 10 cm
• Country of Origin: United States
• Performance Part: Yes