Owners of the Infiniti G37 seek improved throttle response, deeper engine tone, and a measurable gain in horsepower and torque. The following select cold air intakes are designed to maximize airflow to the 3.7L V6, while maintaining fitment with the G37 and related models. This guide highlights performance-oriented kits, with a focus on materials, airflow efficiency, and ease of installation. Each option features alloy or aluminum construction, designed to reduce intake restriction and amplify the engine’s “cold air” advantage during acceleration and mid-range driving.
Summary of selected products:
| Product | Brand | Key Benefit |
|---|---|---|
| KAX 2.75″ Cold Air Intake Kit System (Red) | KAX | 8-10% horsepower and 6-8% torque increase; deep sporty sound |
| K&N Cold Air Intake System | K&N | Guaranteed horsepower and torque, dyno-tested, enhanced engine growl |
| KAX 2.75 inch Cold Air Intake System Kit (Black) | KAX | 8-10% horsepower and 6-8% torque; durable T-304 aluminum construction |
| aFe Power Takeda TA-3016P | aFe Power | Up to 19 hp and 12 lb-ft torque; dry filter for easy maintenance |
| PHILTOP 2.75″ Cold Air Intake Kit (Red) | PHILTOP | Estimated up to 14 hp and 13 lb-ft torque; guaranteed horsepower and torque |
KAX 2.75″ Red Cold Air Intake Kit
The KAX system is designed to fit Infiniti G37 (2008-2013) and Nissan 370Z (2009-2020) V6 3.7L platforms, with a red anodized finish that signals a performance-oriented package. The lightweight T-304 aluminum intake pipe is polished for durability and corrosion resistance, while maximizing airflow through the stock manifold. Installers should expect improved throttle response, a sportier engine tone, and a measurable horsepower gain of about 8-10% along with 6-8% more torque. The kit includes multiple components to ensure compatibility and a snug fit, along with a deeper, more aggressive exhaust note during acceleration.
Key points: high-flow air path, resilient materials, and a focus on street-driven performance. The red color also helps distinguish the kit in a crowded engine bay, making it an appealing choice for enthusiasts seeking a balance of function and visual appeal.
K&N Cold Air Intake System
K&N’s cold air intake system is built for a broad Infiniti/Nissan V6 3.7L fleet, including the G37 and 370Z. The system emphasizes a less restrictive air path to deliver more cool, oxygen-rich air into the engine, which in turn supports stronger acceleration and power delivery. K&N provides wheel-based dynamometer results and dyno-tested performance data with each kit, delivering documented horsepower and torque gains. In addition to power, the intake’s design aims to enhance engine sound—allowing a noticeable growl during aggressive acceleration while maintaining a quieter cadence at cruising speeds. This makes it a versatile option for daily driving and spirited sessions alike.
Highlights include a proven performance track record, easy-to-follow installation, and a balance of power with audible feedback that enthusiasts often seek when upgrading induction systems.
KAX 2.75 Inch Black Cold Air Intake Kit
The Black variant of the KAX 2.75-inch kit provides the same performance goals as its red sibling but with a stealthy aesthetic. The system is compatible with Infiniti G37 models from 2008-2013 and Nissan 370Z from 2009-2020. It includes 2 air filters, 2 intake tubes, and silicone connectors to ensure a tight seal and maximum airflow. Expect a rise in horsepower around 8-10% and torque gains near 6-8%, along with a robust, sporty sound commensurate with an enhanced intake system. The kit’s polished T-304 aluminum pipe adds durability and a quality feel, making it a compelling option for those who value both function and appearance.
Consider this option if you want a similarly configured kit as the red version but prefer a darker, understated look under the hood without sacrificing performance.
aFe Takeda Cold Air Intake System
The aFe Power Takeda TA-3016P is positioned as a high-performance option for the Infiniti G37 Coupe with the 3.7L V6. It delivers notable gains up to 19 horsepower and 12 lb-ft of torque at the wheels, according to manufacturer estimates. The system features a Takeda Pro DRY S dry filter, which avoids oiling and is easy to clean with soap and water, simplifying maintenance. Manufactured and assembled in the USA, this intake emphasizes performance-driven design and durable construction, aiming to provide an extended power band and a more aggressive intake resonance under acceleration.
Engineers and enthusiasts may appreciate the combination of high power potential, reduced maintenance hurdles, and domestic manufacturing support that comes with this kit.
PHILTOP 2.75″ Red Cold Air Intake Kit
PHILTOP’s 2.75″ kit is designed for the Infiniti G37 (2008-2013) and Nissan 370Z (2009-2020) 3.7L V6 engines. The kit includes two air filters, two intake tubes, and silicone connectors, ensuring a complete upgrade path for improved airflow. It advertises a substantial increase in acceleration and towing power by delivering a less restrictive air path, increasing the amount of cold air entering the engine by up to an estimated 14 horsepower and 13 lb-ft of torque. The kit’s performance claim is reinforced by wheel-dyno testing and certification of horsepower and torque improvements, making it a solid choice for drivers seeking a robust, value-focused upgrade.
In addition to performance, PHILTOP emphasizes compatibility and kit completeness, which can reduce installation time and ensure reliable operation over time.
PHILTOP Aluminum Polished Black Cold Air Intake
This PHILTOP entry emphasizes a robust cold air pathway with an aluminum-polished finish. The kit is intended for 2009-2019 Nissan 350Z 3.7L V6 and 2008-2013 Infiniti G37 3.7L, making it a versatile upgrade for a broader set of V6 Infiniti/Nissan models. The core promise remains an increase in engine output by increasing airflow to the engine, improving throttle response and delivering a stronger acceleration feel. The polished black aesthetic adds a premium look under the hood, while the technical claims focus on sustained performance and long-term durability.
When choosing, consider fitment precision and the balance between cosmetic appeal and measured power gains, as documented by the manufacturer’s testing data.
Buying Guide
- Fitment and compatibility: Confirm the kit is specifically designed for Infiniti G37 (2008-2013) and related 3.7L V6 platforms, with correct year ranges for your vehicle. Some kits mention Nissan 370Z compatibility as well—verify your exact VIN before purchase.
- Materials and build quality: Look for aluminum or polished aluminum tubing (T-304 is common) for durability and reduced heat soak. Cheaper units may use lower-grade materials that wear faster or develop leaks.
- Filtration and maintenance: Dry filters (like Takeda) offer easy maintenance, while oiled filters may require periodic cleaning with oil. Assess your maintenance preferences and driving conditions.
- Power expectations: Real-world gains vary; most reputable kits advertise horsepower and torque improvements in the 6-20% range, with higher figures often tied to specific dyno conditions. Compare manufacturers’ tested numbers and ensure they align with your goals.
- Sound and drive feel: Many kits emphasize a deeper, sportier intake tone. Consider whether you want a more audible growl or a subtle improvement for daily driving.
- Ease of installation: Some kits come with comprehensive hardware and step-by-step instructions, while others may require additional parts or professional installation. Review included components to avoid surprises.
- Warranty and support: Check for manufacturer warranties and customer support quality, as this reflects confidence in the product and post-purchase assistance.
- Aesthetics: Aesthetic considerations, such as red or black finishes and visible tubing, can affect under-hood appearance. Choose a look that matches your preferences.
- Overall value: Weigh the price against performance gains, maintenance needs, and compatibility. A kit with solid dyno-backed gains, durable materials, and complete hardware is typically a better long-term value.