HomeExhaust > Catalytic ConverterAP Exhaust 645436 Catalytic Converter - Left
Part #: 645436

AP Exhaust 645436 Catalytic Converter - Left

Left
⚙️ 8 vehicles fit this part
🔍
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$233.57Free 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: Dodge, Ram 1500
🔄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 Dodge Ram 1500

The AP Exhaust 645436 catalytic converter is designed specifically for Dodge Ram 1500 models, providing a direct-fit solution that meets Federal and EPA standards. Constructed with durable stainless steel and a ceramic substrate, this converter ensures efficient emission control and long-lasting performance.

  • Body material: corrosion-resistant stainless steel
  • Federal / EPA direct-fit catalytic converter
  • Two O2 sensor ports for accurate emissions monitoring
  • Inlet type: 2 bolt loose flange with flare
  • Outlet type: 2.25 inch outside diameter pipe with hardware included
  • Overall length: 45.75 inches
  • Ceramic substrate for effective catalytic reaction
  • No inlet or outlet gaskets required

Durable Construction and Precise Fitment

This AP Exhaust catalytic converter (part number 645436) is engineered to replace the factory unit on Dodge Ram 1500 trucks, ensuring a seamless installation without the need for additional gaskets at the inlet or outlet. The stainless steel body resists rust and corrosion, while the ceramic substrate provides reliable catalytic conversion to reduce harmful emissions. The converter features two O2 sensor ports, allowing for proper sensor placement and accurate engine management system readings.

Compatible Applications and Emission Compliance

Compatible with Dodge Ram 1500 models, this catalytic converter meets Federal and EPA regulations, making it suitable for vehicles requiring direct-fit replacements that comply with emission standards. The 2 bolt loose flange inlet and 2.25 inch outlet pipe design ensure compatibility with the existing exhaust system components.

  • Replaces faulty or clogged catalytic converters
  • Resolves emission test failures
  • Improves exhaust flow and engine performance
  • Reduces harmful exhaust emissions
  • Eliminates exhaust leaks caused by damaged converters

Installation Notes and Tips

Installation of the AP Exhaust 645436 catalytic converter requires no inlet gaskets and includes outlet hardware for secure attachment. The 2 bolt loose flange inlet with flare simplifies alignment during installation. It is recommended to inspect O2 sensors and wiring during replacement to ensure proper function. Professional installation is advised to maintain emission compliance and system integrity.

Quality Assurance and Warranty

AP Exhaust catalytic converters are manufactured to meet Federal and EPA standards for emission control. The stainless steel construction and ceramic substrate are designed for durability and consistent performance. Please refer to AP Exhaust documentation for specific warranty details related to part number 645436.

BrandAP Exhaust
Part Number645436
Body MaterialStainless steel
Inlet GasketNot required
Inlet HardwareNone
Inlet Type A2 bolt loose flange w/ flare
O2 Sensor Ports2
Outlet GasketNot required
Outlet HardwareYes
Outlet Type A2.25" od pipe
Overall Length (IN)45.75
Substrate MaterialCeramic
TypeFederal / epa direct-fit

This part fits 8 vehicles. Search below:

YearMakeModelLitersCylindersWheel BasePositionNotes
2005DodgeRam 15005.7LV8140.5"LeftDirect 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.
2005DodgeRam 15005.7LV8120.5"LeftDirect 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.
2005DodgeRam 15005.7LV8160.5"LeftDirect 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.
2005DodgeRam 15005.7LV8LeftDirect 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.
2004DodgeRam 15005.7LV8140.5"LeftDirect 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.
2004DodgeRam 15005.7LV8160.5"LeftDirect 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.
2004DodgeRam 15005.7LV8120.5"LeftDirect 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.
2004DodgeRam 15005.7LV8LeftDirect 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.