Air and Fuel› Air Cleaners, Filters, Intakes and Components

Stillen

STILLEN Dual Ultra Long Tube Air Intake

$633.44

SKU: 402847

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The STILLEN Gen 3 Dual Ultra Long Tube Air Intake is a performance-enhancing intake system designed for the 2009-2013 Infiniti G37 Sedan. It features ultra-long, mandrel-bent, polished aluminum intake tubes to maximize air velocity and airflow to the engine.
Show original supplier description
The STILLEN Gen 3 Dual Ultra Long Tube Air Intake is crafted to maximize performance for the 2009-2013 Infiniti G37 sedan. Constructed with mandrel-bent, polished aluminum tubing, it ensures smooth airflow and enhances engine bay aesthetics. This system is designed to deliver optimal horsepower and torque gains, with reported figures of up to 14 WHP and 6.9 WTQ for the G37 sedan (results may vary). Installation requires a mild enlargement of the core support. The kit is compatible with both RWD and AWD models of the 2009-2013 Infiniti G37 3.7 Liter V6. It is CARB Exempt with Executive Order #D-436-22, ensuring compliance with emissions regulations.
Vehicle Symptoms
  • Loss of throttle response on highway
  • Engine feels sluggish during acceleration
  • Reduced fuel economy noticed over time
  • Hesitation when pressing gas pedal
  • Engine sounds restricted under load
Relevant Conversations
  • G37 intake upgrade for better throttle response
  • Stillen dual intake vs Injen G37 comparison
  • 2009 Infiniti G37 slow acceleration fix
  • G37 cold air intake install difficulty
  • Best intake for G37 sedan horsepower gains
  • G37 AWD intake kit recommendations
  • Stillen 402847 review G37 forum
  • G37 intake install core support modification
  • G37 VQ37VHR intake system upgrade
  • Infiniti G37 intake before and after dyno

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandStillen
Part Number402847
CategoryAir and Fuel
5,000+ Trusted brands
1M+ Enthusiasts
5M+ Parts sold
(760) 282-4645 hello@motormia.co

Buy with Confidence

Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

View Full Return Policy

Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

View Full Shipping Policy