Product Details
Fitment
FAQ
Shipping & Returns
2001–2005 Lexus IS300 3.0L 2JZ-GE Cold Air Intake Kit
The Flashark cold air intake for the 2001–2005 Lexus IS300 3.0L 2JZ-GE gives the engine a wider, smoother path to the throttle body by replacing the sealed factory airbox and its paper panel filter with a 70 mm mandrel-bent aluminum tube and a high-flow dry cone filter. The result is a sharper throttle pedal from roughly 3,000 RPM, a deeper induction note the stock system was built to mute, and a washable filter you never have to oil. It mounts at the factory bolt locations with hand tools in about 45–90 minutes — no cutting, no drilling — and your original MAF sensor transfers straight into the new tube.
Specifications
| SKU | FLIS25041 |
| Intake tube material | Aluminum |
| Intake tube finish | Matte black powder coat |
| Intake tube diameter | 70 mm (2.76 in) |
| Filter type | Dry — no oil required |
| Filter media | Red cotton-gauze, washable and reusable |
| Filter dimensions | 120 mm top / 155 mm base / 130 mm height, 70 mm inlet |
| Coupler | Straight silicone, 70 mm × 65 mm |
| Breather hoses | Two PCV/vacuum hoses — D13-d7 × 380 mm and D13-d7 × 500 mm |
| Total weight | 3.0 kg (6.6 lb) |
| Estimated install time | 45–90 minutes |
| Tune required | No — the factory ECU adapts to the added airflow |
Key Features
- 70 mm mandrel-bent aluminum intake tube: Single-piece construction with an integrated mounting flange and a heat-resistant matte black powder coat that resists underhood heat soak while keeping airflow smooth from filter to throttle body.
- High-flow dry cone filter: Red cotton-gauze element measuring 120 mm top / 155 mm base / 130 mm height with a 70 mm inlet. Dry media needs no oiling — rinse, dry, and reinstall — and it is washable and reusable for the life of the vehicle.
- Direct-fit silicone coupler: A 70 mm × 65 mm straight coupler bridges the intake tube to the throttle body for a precise, airtight seal, and heat-resistant silicone will not crack or deform at engine-bay temperatures.
- Dual breather hoses: Two PCV/vacuum hoses (D13-d7 × 380 mm and D13-d7 × 500 mm) connect to the factory PCV valve and vacuum ports to keep closed-loop crankcase ventilation intact.
- Complete installation hardware: The kit ships with a filter clamp, two narrow clamps, one mini clamp, an M6 anti-vibration mount with washer and lock nut, two M6 × 8 socket-head cap screws, and a hex key.
- True bolt-on fit: The integrated bracket lines up with the factory bolt holes — no cutting, drilling, or permanent modification — and the stock airbox can be reinstalled at any time.
- 2JZ induction sound: The cone filter and aluminum tubing produce a deep, resonant intake growl under acceleration, most audible above 4,000 RPM where the 2JZ-GE really comes alive.
- Expected output range: Approximately 5–10 hp with a matching torque gain on an otherwise stock 2JZ-GE, plus a sharper throttle tip-in and a stronger mid-range pull. Results vary with the vehicle, its condition, calibration, installation, and supporting hardware.
Who This Kit Is For
Who is this kit for? This Flashark cold air intake replaces the factory airbox and intake tube on the 2001–2005 Lexus IS300 3.0L 2JZ-GE (Base Sedan and Sportcross Wagon). It is for owners who want a sharper throttle pedal, a deeper intake tone under acceleration, and a reusable washable filter on a bolt-on install that takes about 45–90 minutes with hand tools.
✅ For you if…
- You drive a 2001–2005 IS300 3.0L and want a first bolt-on breathing mod.
- You want a stronger pull from roughly 3,000 RPM without an ECU tune.
- You would rather run a washable dry filter than buy disposable paper elements.
- You want the induction sound the stock airbox was designed to mute.
❌ Not for you if…
- You need an OEM-replacement air filter or intake hose.
- You are expecting a guaranteed MPG gain.
- You need a CARB-exempt intake for California or another CARB-adopting state — this kit carries no CARB EO number.
- You regularly ford deep water.
Building out the rest of the car? Pair this intake with the Lexus IS300 cat-back exhaust so the 2JZ-GE breathes on both sides.
Check Before Ordering
- Vehicle fitment: Exact fit for the 2001–2005 Lexus IS300 3.0L 2JZ-GE in Base Sedan and Sportcross Wagon body styles — see the Fitment table above. Automatic-transmission cars are a direct fit. On manual (W55) cars the mounting points near the intake bracket differ slightly: some owners install it with a minor bracket adjustment, others use a small custom spacer, and you should plan an extra 10–15 minutes. If your year, model, or engine is not in the table, message us before ordering.
- What it replaces: This kit takes the place of the factory airbox assembly and the intake tube feeding it. Everything downstream — throttle body, intake manifold, and engine internals — stays stock.
- Filter and maintenance: Ships with a dry red cotton-gauze cone filter that needs no oil. To clean it, tap off loose debris, rinse, air dry completely, and reinstall.
- Sensors: The intake tube has a factory-spec MAF mounting flange, so you reuse your original MAF sensor — no spacer or adapter is required. Transfer it from the stock airbox lid with the O-ring seal intact.
- Legality: This kit carries no CARB Executive Order (EO) number. It is not legal for sale or use in California (and other CARB-adopting states). Check your state's emissions rules before ordering.
- Install and water: Bolt-on with basic hand tools in about 45–90 minutes — no cutting and no drilling. Avoid deep water crossings; water ingestion can cause hydrolock and severe engine damage.
What's in the Box
Everything needed for the install ships in one box — the parts below are the complete kit contents.
- ✅ Intake pipe (Ø70 mm, with integrated bracket and dual breather nozzles) × 1
- ✅ Red cone air filter (Ø70 mm inlet) × 1
- ✅ Air filter clamp × 1
- ✅ Narrow band clamps × 2
- ✅ Mini clamp × 1
- ✅ Straight silicone coupler (Ø70 × 65 mm) × 1
- ✅ PCV breather hose (D13-d7 × 380 mm) × 1
- ✅ Breather/vacuum hose (D13-d7 × 500 mm) × 1
- ✅ M6 anti-vibration mount with washer and lock nut × 1
- ✅ Socket head cap screws M6 × 8 × 2
- ✅ Hex key × 1
Shipping & Returns
Free U.S. Shipping: Orders are typically processed within 1–2 business days and delivered within 7–9 business days. Additional charges may apply to remote areas.
30-Day Returns: Unopened and unused items in their original packaging may be returned within 30 days of receipt. Return shipping is covered for verified quality issues.
Worry-Free Delivery: Optional protection against eligible loss, theft, delay, or transit damage is available at checkout.
| Years | Make | Model | Engine |
|---|---|---|---|
| 2001–2005 | Lexus | IS300 Base Sedan | 3.0L L6 DOHC (2JZ-GE) |
| 2001–2005 | Lexus | IS300 Sportcross Wagon | 3.0L L6 DOHC (2JZ-GE) |
2001–2005 Lexus IS300 3.0L 2JZ-GE Cold Air Intake FAQs
Q1: Will this fit my 2003 Lexus IS300 Sportcross?
A1: Yes. Every 2001–2005 IS300 with the 3.0L DOHC 2JZ-GE is a direct bolt-on fit, and the Sportcross wagon's engine bay layout matches the sedan for intake routing.
Q2: Does this fit manual transmission IS300s?
A2: The kit is designed around the automatic-transmission bracket layout. On manual (W55) cars the mounting points near the intake bracket sit slightly differently — some owners install it with a minor bracket adjustment, others add a small custom spacer, and you should plan on an extra 10–15 minutes.
Q3: How much horsepower will this add?
A3: On an otherwise stock 2JZ-GE, expect approximately 5–10 hp along with a similar torque gain. The change you feel most is a sharper throttle tip-in and a stronger mid-range pull between 3,000 and 5,500 RPM. Results vary with the vehicle, its condition, calibration, installation, and supporting hardware, and gains grow with a free-flowing exhaust.
Q4: Do I need a tune after installing this intake?
A4: No. The factory ECU's MAF-based fuel trim adapts to the added airflow within its correction range, so a tune is not required for safe operation. If you have also changed the exhaust, a tune can extract more. For the full picture, see our guide: do you need a tune for a cold air intake.
Q5: Will this trigger a check engine light?
A5: It is designed not to. The kit reuses the factory MAF sensor in its original location and bore, and the two included breather hoses keep closed-loop crankcase ventilation intact. Codes usually come from an intake leak or a poorly seated sensor, so recheck the coupler and breather connections after install. If you do end up with a rough idle, our troubleshooting walkthrough covers the usual causes: rough idle after a cold air intake install.
Q6: Is the filter dry or oiled?
A6: Dry — no oil required, ever. The red cotton-gauze media filters without oil saturation, so there is no risk of filter oil contaminating the MAF sensor. To clean it: tap off loose debris, wash with filter cleaner, rinse thoroughly, air dry completely, and reinstall.
Q7: Is this intake better than the stock airbox?
A7: For airflow, yes. The stock IS300 airbox routes intake air through multiple resonator chambers and a paper panel filter, all tuned for quiet rather than for flow. This kit removes those restrictions and replaces them with a 70 mm aluminum tube and a high-flow cone filter. The trade-off is a bit more intake noise at part throttle, which most IS300 owners treat as part of the appeal.
Q8: Will this improve throttle response?
A8: Yes — it is the single most noticeable change. With the restriction gone, the engine reaches its target air mass faster when you open the throttle, so tip-in feels quicker and there is less lag between pedal input and acceleration, especially between 3,000 and 5,500 RPM.
Q9: Will I get better fuel economy?
A9: Not guaranteed. Lower pumping losses can help efficiency in steady-state cruising, but the sharper response and extra induction sound tend to encourage harder driving, which offsets the gain. Real-world MPG change is typically negligible.
Q10: Will the intake make the car louder?
A10: Yes — and that is the point. The cone filter and aluminum tube produce a deep, resonant intake growl under acceleration, most noticeable above 4,000 RPM. At idle and light cruise it is barely audible.
Q11: How hard is the install for a beginner?
A11: Moderate. Basic hand tools and about 45–90 minutes are enough: remove the factory airbox and resonator assembly, transfer the MAF sensor to the new intake tube, mount the bracket at the factory bolt location, connect the silicone coupler to the throttle body, attach both breather hoses, clamp the filter, and recheck every connection. No fabrication is required.
Q12: Will heat soak be an issue?
A12: In stop-and-go traffic or high ambient temperatures a cone filter will draw warmer underhood air than the sealed factory airbox — that is true of any exposed-element intake. Once you are moving, airflow through the engine bay brings intake temperatures back down quickly, and the matte black powder-coated aluminum tube resists heat soak better than a polished tube.
Q13: Can I use my factory MAF sensor with this intake?
A13: Yes. The intake tube has a factory-spec MAF mounting flange. Transfer the sensor from the stock airbox lid, keep the O-ring seal intact, and tighten the mounting screws evenly. A poorly seated sensor or an air leak around the flange will cause idle issues or fuel trim faults, so take your time on this step.
Q14: Is a cold air intake worth it for the Lexus IS300?
A14: For most IS300 owners, yes — it is one of the most popular first modifications for good reason. It is inexpensive, reversible, and installable in an afternoon, and it sharpens throttle response, adds induction sound, and sets up further breathing mods such as exhaust and headers. The 2JZ-GE responds well to intake upgrades without touching the engine internals.
Q15: What is the return and warranty policy?
A15: Unopened and unused kits in their original packaging may be returned under our standard return policy — see the Shipping & Returns section above for the current window. If your kit arrives damaged or defective, contact service@flasharkracing.com and we will arrange a replacement or refund.
Fast Shipping Policy
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Easy Return Policy
Every order comes with a 30-day free return, provided the item is brand new, uninstalled, and in its original packaging. We cover return shipping for quality issues. Refunds are processed within 3-5 business days. Click for Return Policy
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