A-Premium Exhaust Manifold Catalytic Converter Kit Direct-Fit Compatible with Lexus IS300 2001-2005 3.0L, GS300 1998-2005 3.0L, SC300 1998-2000 3.0L & Toyota Supra 1998 3.0L, EPA Compliant

Why Replace Your Exhaust Manifold + Catalytic Converter?

Over time, factory catalytic converters and manifolds:

• Get clogged or restricted
• Reduce engine performance
• Trigger check engine lights
• Kill fuel efficiency

This kit fixes all of that by:

• Restoring proper exhaust flow
• Improving engine performance and efficiency
• Helping eliminate emissions issues

Translation: your car runs smoother, cleaner, and stronger.

Vehicle Fitment

Compatible with:

• Lexus IS300 (2001–2005) 3.0L
• Lexus GS300 (1998–2005) 3.0L
• Lexus SC300 (1998–2000) 3.0L
• Toyota Supra (1998) 3.0L

(Built for naturally aspirated 2JZ-GE setups—verify configuration before install.)

[Reference Number]: 16354, 674-642, 674642, 40486, 1714046030, 1714046080

Installation Notes

• Direct bolt-on design
• Professional installation recommended
• New gaskets/hardware recommended for best results

(Pro tip: Replace O2 sensors if they’re old—don’t fix half the problem.)

Why A-Premium?

Because they deliver affordable, OE-style replacement parts that restore performance and reliability—without the dealership markup.

[Specification]: ① E.P.A. Compliant: Yes; ② Vehicle’s Emissions Specifications: Federal Emissions; ③ Restricted States: CA, NY, CO, ME; ④ Body Subject material: Stainless Steel; ⑤ Inlet Type: 4 Bolt Welded Flange; ⑥ Inlet Quantity: 2; ⑦ Outlet Type: 3 Bolt Welded Flange; ⑧ Outlet Quantity: 1; ⑨ Mounting Hardware Included: No

IS300 catalytic converter exhaust manifold 2JZ replacement – Key Features

• Direct-Fit Design
  Bolt-on replacement for factory manifold and catalytic converter.
• Integrated Catalytic Converter
  Combines manifold and cat for simplified installation.
• EPA Compliant
  Meets federal emissions standards (where applicable).
• High-Quality Construction
  Built to handle heat, pressure, and long-term use.
• Improved Exhaust Flow
  Restores performance lost from clogged or failing OEM units.

[E.P.A Compliant]: EPA-compliant catalytic converters can’t be sold or installed in California and Colorado and, under certain circumstances, in Maine and New York. Check your vehicle’s Emission Keep an eye on Information Label and your state’s aftermarket converter regulations to make a choice the right kind catalytic converter.

What It Does Best

• Eliminates restrictions from failing catalytic converters
• Restores engine performance and efficiency
• Helps resolve check engine light issues (related to emissions)
• Improves overall drivability

Performance Expectations (Real Talk)

• Restores lost horsepower—not a “power mod”
• Improves throttle response if your old cat was clogged
• Helps engine run smoother and more efficiently

This is a restoration upgrade, not a performance exhaust.

[Buy with Confidence]: A-Premium offers a one-year unlimited-mileage guarantee on our meticulously crafted Catalytic Converter. We provide all kinds of automotive accessory categories, making sure that you’ll hit the street with peace of mind.

What It Won’t Do

Let’s keep expectations grounded:

• Won’t add big horsepower gains
• Not a performance header or turbo manifold
• Won’t bypass emissions (this is compliant)

This is about getting your car back to where it should be.

Who Is This For?

• IS300 / GS300 / SC300 / Supra owners with failing cats
• Anyone dealing with check engine lights or emissions issues
• Drivers wanting OEM-style replacement without dealership pricing

If your car feels sluggish or throwing codes—this is likely your fix.

The A-Premium Exhaust Manifold Catalytic Converter Kit is the smart solution for restoring your 2JZ-powered vehicle’s performance, efficiency, and emissions compliance.

Fix the restriction. Restore the power. Pass emissions.

And finally—your car runs like it’s supposed to again.