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Your 2001-2005 Lexus IS300's 2JZ-GE engine deserves better than the factory airbox. This Flashark Cold Air Intake Kit replaces the restrictive stock setup with a single Φ70mm aluminum intake pipe and a high-flow red cone filter — giving your IS300 sharper throttle response, smoother power delivery across the rev range, and that aggressive induction tone the stock system completely kills.
Built specifically for the Base Sedan and Sportcross Wagon with the 3.0L DOHC inline-6, this kit bolts to factory mounting points using the integrated bracket. No drilling, no cutting, no fabrication. About 60 minutes with basic hand tools.
Specifications
| Spec | Detail |
|---|---|
| Air Filter Type | Dry (no oil required) |
| Material | Aluminum piping |
| Pipe Finish | Powder-coated matte black |
| Intake Pipe Diameter | Φ70mm |
| Weight | 3.0 kg |
| Estimated Install Time | 60 minutes |
Key Features
Φ70mm Aluminum Intake Pipe — single-piece mandrel-bent aluminum pipe in matte black powder coat with integrated flange and bracket; routes cooler, denser air directly to the throttle body
High-Flow Red Cone Air Filter — 120mm top / 155mm base / 130mm height, Φ70mm inlet, red dry cotton gauze (no oil required); washable and reusable for the life of your car
Straight Silicone Coupler — Φ70×65mm coupler for exact fitment at the throttle body connection; heat-resistant and airtight
Dual Breather Hoses — D13-d7×380mm and D13-d7×500mm breather tubes connect to factory PCV and vacuum lines; no check engine light
Complete Hardware Kit — 1× filter clamp, 2× narrow band clamps, 1× mini clamp, 1× M6 anti-vibration mount with washer and lock nut, 2× M6×8 socket head cap screws, 1× hex key included
Direct Bolt-On Fit — integrated mounting bracket bolts directly to factory holes; about 60 minutes with basic hand tools
Features:
- Air intake kits can help your engine to draw more cold air resulting in better throttle response and higher explosive horsepower outputIntake pipe made by lightweight aluminum
- Allow maximum airflow through the stock manifold system and Intense deep sporty Sound
- Improve throttle response throughout low and mid RPMFilter is upgraded to high high-quality washable and reusable cone air filter
- This air intake kit will increase 7-10% of Horsepower and 6-8% of Torque
- Easy to install and easy to fit with simple tools
- No additional parts will be needed for installation after you purchase this kit
- All mount accessories are included, the same as the picture shown
FAQ
Q: Will this fit my 2003 Lexus IS300 Sportcross?
A: Yes — this is a direct bolt-on for all 2001-2005 IS300 Base Sedan and Sportcross Wagon with the 3.0L DOHC engine.
Q: Does it fit the IS300 with manual transmission?
A: The manual transmission IS300 has a slightly different bracket layout. Some users report it fits with minor bracket modification, but it is designed for the automatic transmission Base models.
Q: How much horsepower will I gain?
A: Expect 5-10 wheel horsepower on a stock 2JZ-GE. The biggest difference is throttle response and smoother power delivery across the mid-range.
Q: Do I need a tune after installing?
A: No tune required. The factory ECU adapts automatically to the increased airflow.
Q: Will it throw a check engine light?
A: Not if installed correctly. Make sure both breather hoses connect to your PCV and vacuum lines and all clamps are tight.
Q: Is the filter dry or oiled?
A: Dry filter — no oil required. Tap out debris, wash with filter cleaner, rinse, dry, reinstall.
| Year | Make | Model | Trim | Body Style | Engine |
|---|---|---|---|---|---|
| 2001 | Lexus | IS300 | Base | Sedan 4-Door | 3.0L L6 DOHC |
| 2001 | Lexus | IS300 | Base | Sportcross Wagon | 3.0L L6 DOHC |
| 2002 | Lexus | IS300 | Base | Sedan 4-Door | 3.0L L6 DOHC |
| 2002 | Lexus | IS300 | Base | Sportcross Wagon | 3.0L L6 DOHC |
| 2003 | Lexus | IS300 | Base | Sedan 4-Door | 3.0L L6 DOHC |
| 2003 | Lexus | IS300 | Base | Sportcross Wagon | 3.0L L6 DOHC |
| 2004 | Lexus | IS300 | Base | Sedan 4-Door | 3.0L L6 DOHC |
| 2004 | Lexus | IS300 | Base | Sportcross Wagon | 3.0L L6 DOHC |
| 2005 | Lexus | IS300 | Base | Sedan 4-Door | 3.0L L6 DOHC |
| 2005 | Lexus | IS300 | Base | Sportcross Wagon | 3.0L L6 DOHC |
⚠️ Important: Fits all 2001-2005 Lexus IS300 with the 3.0L DOHC inline-6 (2JZ-GE) engine in Base Sedan and Sportcross Wagon configurations. Does NOT fit IS300 with manual transmission without modification.
2001-2005 Lexus IS300 3.0L 2JZ-GE Cold Air Intake Kit FAQ
Q1: Will this cold air intake fit my 2001-2005 Lexus IS300?
A1: Yes. This cold air intake kit is designed specifically for 2001–2005 Lexus IS300 equipped with the 3.0L inline-6 2JZ-GE engine. It is a direct bolt-on replacement for the factory airbox and intake tube.
Q2: Does this intake fit all IS300 models?
A2: It fits all Lexus IS300 models from 2001 to 2005 as long as they retain the original naturally aspirated 2JZ-GE engine. Engine-swapped or turbocharged builds may require a different intake setup.
Q3: What engine does this IS300 cold air intake support?
A3: This kit is designed for the Toyota/Lexus 2JZ-GE 3.0L inline-6 engine used in the IS300 platform. It is not compatible with the 2JZ-GTE turbo engine.
Q4: How much horsepower does a cold air intake add to an IS300?
A4: Typical gains on a naturally aspirated 2JZ-GE range from 5–15 horsepower depending on supporting modifications such as exhaust, headers, and ECU tuning. The most noticeable improvement is throttle response and induction sound.
Q5: Do I need a tune after installing this intake?
A5: A tune is not required for a basic bolt-on installation on a stock IS300. However, tuning is recommended if combined with other performance modifications like exhaust systems, headers, or throttle body upgrades.
Q6: Will this intake trigger a check engine light (CEL)?
A6: A properly installed intake should not cause a CEL. Issues typically come from loose clamps, vacuum leaks, or incorrect MAF sensor installation rather than the intake itself.
Q7: Is this better than the stock IS300 airbox?
A7: The factory airbox is designed for quiet operation and heat control. This cold air intake improves airflow efficiency and produces a more aggressive engine sound while reducing intake restriction.
Q8: Will this intake improve acceleration and throttle response?
A8: Yes. By reducing intake restriction, the engine can breathe more efficiently, which improves throttle response and mid-range acceleration feel.
Q9: Does this intake improve fuel economy (MPG)?
A9: Fuel economy improvements are not guaranteed. While smoother airflow can improve efficiency in some driving conditions, real-world MPG depends heavily on driving style and vehicle condition.
Q10: Will this intake make my IS300 louder?
A10: Yes. The cone filter and aluminum intake piping increase induction sound, making the 2JZ-GE engine sound more aggressive during acceleration and higher RPM.
Q11: Is installation difficult for beginners?
A11: Installation is considered moderate and can typically be completed in 45–90 minutes using basic hand tools. It involves removing the factory airbox and replacing it with the intake kit.
Q12: Can this intake cause heat soak?
A12: Some heat soak may occur in traffic or hot conditions because cone filters are more exposed than the factory sealed airbox. At speed, airflow helps reduce this effect.
Q13: Is this cold air intake safe for daily driving?
A13: Yes. When properly installed, this intake is safe for daily use. However, avoid deep water exposure since cone filter systems sit lower and are more exposed than stock airboxes.
Q14: Will the MAF sensor work with this intake?
A14: Yes. The factory MAF sensor must be transferred correctly during installation. Improper placement or air leaks around the sensor can cause rough idle or fuel trim issues.
Q15: Is a cold air intake worth it for a Lexus IS300?
A15: For most IS300 owners, it is a popular first modification because it improves intake sound, throttle response, and overall driving feel at a relatively low cost, even if horsepower gains are modest.
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