Click to zoom in
SKU: 304-146-101
Weapon R Secret Weapon Intake System for 1997-2001 Infiniti Q45 4.1L
The Weapon R Secret Weapon Intake System is engineered to deliver more air to your engine than any standard intake option. This system stands out by using patented dual-velocity airflow technology, pulling in three times the air volume of typical setups for noticeable gains in horsepower, torque, and throttle response. Dyno tests from Tuner Performance Reports Magazine confirm it beats both cold air and short ram intakes in real-world acceleration and power delivery, making it the clear pick for Q45 owners seeking reliable performance gains without complexity.
Precise Vehicle Fitment
This intake bolts on directly to:
- 1997-2001 Infiniti Q45 Base (4.1L V8 - VH41DE engine)
- 1997-2001 Infiniti Q45 T (4.1L V8 - VH41DE engine)
- 2000 Infiniti Q45 Anniversary Edition (4.1L V8 - VH41DE engine)
Installation takes under an hour with basic tools no cutting, drilling, or modifications required. It's a direct replacement for the factory airbox, ensuring a seamless fit on all trim levels.
Complete Kit Contents
Every purchase of the Weapon R 304-146-101 includes:
- Mandrel-Bent Intake Tube: Precision-crafted from 6061-T6 aluminum for strength and lightweight design, polished to a mirror finish for corrosion resistance and style under the hood.
- SW1 High-Flow Air Filter: 1-inch thick, open-pore polyurethane foam element with an integrated tuned velocity stack to cut turbulence and boost air speed. Fully reusable clean and reinstall in minutes with mild soap and water.
- Silicone Couplers and Stainless Steel Clamps: Heat-resistant connections for secure, vibration-proof mounting.
- All Mounting Hardware: Bolts, brackets, and adapters for plug-and-play setup.
This full bolt-on kit replaces the restrictive OEM intake, unlocking your Q45's potential while maintaining emissions compliance where applicable.
Proven Performance Advantages
Backed by U.S. Patent #7,263,961 B2, the Secret Weapon design applies the Coanda effect and Bernoulli's principle to split airflow into high- and low-speed streams. This feeds denser, cooler air to your 4.1L V8, resulting in:
- Up to 10-15 horsepower and 12-18 lb-ft of torque increases (based on independent dyno results for similar applications).
- Smoother power band across the RPM range for quicker acceleration from a stop.
- Deeper engine growl on hard pulls, enhancing the driving experience.
Drivers report crisper response and better fuel efficiency on highway cruises, setting this intake apart from basic filters or generic tubes that fall short on flow.
Durability and Backing
Built to last with a limited 1-million-mile warranty, this system uses premium materials tested for extreme conditions. The aluminum tube resists heat soak, while the foam filter traps dirt without choking airflow far beyond paper elements that clog quickly.
Air Intake Systems
Air intake systems for Hellcat, Trackhawk, TRX, HEMI, and import performance platforms are stocked at Black Ops Auto Works. Shop cold air intakes, short ram intakes, air boxes, intake elbows, mass air flow sensors, scoops, snorkels, and silicone couplers for street cars, trucks, Jeeps, and supercharged Mopar builds. Every intake system is filterable by vehicle platform, engine, and intake style so the correct part ships the first time. Black Ops Auto Works carries 4,427 air intake SKUs across cold air intakes, short ram intakes, and supporting components. What This Category Covers An air intake system pulls outside air into the engine and filters it before combustion. Upgrading the factory intake with a cold air intake, short ram intake, or carbon fiber system can improve airflow, throttle response, induction sound, and horsepower potential on compatible applications. Cold Air Intakes vs Short Ram Intakes Cold air intakes route the filter away from engine bay heat for cooler, de...
View Air Intake Systems Products
Cold Air Intakes
Shop cold air intakes, short ram intakes, closed-airbox intake systems, replacement air filters, intake tubes, and MAF housings from K&N, AEM, aFe Power, Airaid, S&B Filters, Injen, Roush, Volant, Corsa, Mishimoto, HPS Performance, Cobb Tuning, JLT, Vararam, Steeda, and other performance intake brands. Find full open-element cold air intakes, sealed-airbox systems, dry and oiled air filters, replacement drop-in filter panels, MAF sensor housings, and complete intake tube kits. Cold air intakes for domestic muscle, sport-compact tuners, diesel trucks, off-road 4x4, Euro performance, and modern sport SUVs Mustang, Camaro, Challenger, Charger, F-150, Silverado, Ram, Tundra, Tacoma, 4Runner, Wrangler, Bronco, Cummins, Duramax, Power Stroke, WRX/STi, Civic Type R, GR86, Supra, GR Corolla, BMW M2/M3/M4, Golf R, and hundreds of additional platforms. Filter by vehicle, intake style (open element, closed airbox, short ram, tube kit), filter media (oiled cotton, dry synthetic), tun...
View Cold Air Intakes Products
Weapon R
Shop Weapon-R performance intakes and import accessories at Black Ops Auto Works. Find Secret Weapon and Dragon intake systems, cold air intakes, short ram intakes, air filters, ram air kits, engine dampers, coolant tanks, catch cans, shift adapters, gauge accessories, and intake hardware for Honda, Acura, Toyota, Nissan, Mazda, Subaru, Mitsubishi, Volkswagen, Infiniti, Lexus, Ford, and other import platforms. Weapon-R Secret Weapon Intakes Secret Weapon intake systems are designed for selected import, sport compact, truck, and SUV applications. Confirm engine size, sensor arrangement, filter location, tube routing, emissions equipment, and available clearance before ordering. Weapon-R Dragon Intakes Dragon intake systems provide vehicle-specific intake routing and performance styling for selected Toyota, Honda, Nissan, Mazda, Subaru, Volkswagen, Lexus, and other applications. Product finish, filter placement, and tube design vary by vehicle. Cold Air and Short Ram Intakes Weapon-R ...
View Weapon R Products