HomeExhaust > Catalytic ConverterCatco 4973 Catalytic Converter
Part #: 4973

Catco 4973 Catalytic Converter

⚙️ 6 vehicles fit this part
🔍
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$28.23Free Shipping
🚚Free ShippingNo Cost to Continental U.S.
🔄Free Returns*Wrong fit? No cost
🛡️60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
🔥
✅ In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Honda, S2000
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST

Reliable Catalytic Converter for Honda S2000

The Catco 4973 catalytic converter is designed specifically for the Honda S2000, providing a direct-fit solution that meets Federal and EPA standards. Constructed with durable stainless steel and a ceramic substrate, this converter ensures effective emission control and long-lasting performance.

  • Body material: corrosion-resistant stainless steel
  • Federal / EPA direct-fit catalytic converter
  • One O2 sensor port for accurate emissions monitoring
  • Inlet: 2 bolt welded flange; Outlet: 3 bolt welded flange
  • Overall length of 19.5 inches for precise fitment
  • Ceramic substrate for efficient catalytic reaction

Product Details and Specifications

The Catco 4973 catalytic converter is engineered to replace the factory unit on Honda S2000 models, ensuring compliance with emissions regulations. Its stainless steel body resists rust and corrosion, extending the life of the exhaust component. The ceramic substrate inside facilitates the conversion of harmful exhaust gases into less harmful emissions. Featuring a 2 bolt welded flange inlet and a 3 bolt welded flange outlet, this converter installs directly without the need for additional gaskets or hardware. The single O2 sensor port allows for proper sensor placement to maintain engine performance and emissions accuracy.

Common Applications and Problem Resolution

  • Replaces a clogged or damaged catalytic converter on Honda S2000
  • Restores proper exhaust flow and reduces harmful emissions
  • Resolves check engine light issues related to catalytic converter failure
  • Helps pass state emissions inspections
  • Improves overall engine efficiency by maintaining correct exhaust backpressure

Installation Notes and Tips

This Catco catalytic converter is designed as a direct-fit replacement for the Honda S2000, simplifying installation. It does not include inlet or outlet gaskets or hardware, so ensure you have the necessary components for a secure seal. The welded flange design requires proper alignment during installation to avoid exhaust leaks. Professional installation is recommended to ensure compliance with emissions standards and optimal performance.

Quality Assurance and Warranty

Catco catalytic converters are manufactured to meet Federal and EPA regulations, providing reliable emissions control. The stainless steel construction and ceramic substrate are tested for durability and performance. Please refer to Catco's warranty policy for specific coverage details related to the 4973 catalytic converter.

BrandCatco
Part Number4973
Body MaterialStainless steel
Inlet GasketNo
Inlet HardwareNo
Inlet Type A2 bolt welded flange
O2 Sensor Ports1
Outlet GasketNo
Outlet HardwareNo
Outlet Type A3 bolt welded flange
Overall Length (IN)19.5
Substrate MaterialCeramic
TypeFederal / epa direct-fit

This part fits 6 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2005HondaS20002.2LL4N/ADirect Fit; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details.
2004HondaS20002.2LL4N/ADirect Fit; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details.
2003HondaS20002.0LL4N/ADirect Fit; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details.
2002HondaS20002.0LL4N/ADirect Fit; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details.
2001HondaS20002.0LL4N/ADirect Fit; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details.
2000HondaS20002.0LL4N/ADirect Fit; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details.

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.