Eastern Convertors 50566 Catalytic Converter - Rear
OE Quality 60-Day Returns
Eastern Convertors
 DIRECT FIT

Eastern Convertors 50566 Catalytic Converter - Rear

Brand Eastern Convertors 50566
Position Rear
Catalyst Type Standard
Clamp Qty 1
Inlet Type A 2 bolt welded flange
Outlet Type A 2 bolt welded flange
Overall Length (IN) 57
Type Federal / epa direct-fit undercar
Product line DIRECT FIT
Fits Buick and Cadillac · 13 vehicles

Direct-fit design. Built to match OE dimensions for straightforward exhaust replacement.

Federal / EPA direct-fit. Undercar configuration for regulated emissions service.

NANO substrate chemistry. Engineered for efficient loading and converter performance.

$460.93Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
Free return shipping if it doesn't fit when you check fitment here first.

Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
Step 2 — Quantity
Order total $460.93
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.
Not what you need? See all Catalytic Converter options

Direct-Fit Catalytic Converter

Eastern Convertors 50566 is a direct-fit catalytic converter built for specific rear exhaust applications. It is engineered to match OE dimensions and fitment, with a Federal / EPA direct-fit undercar design for straightforward replacement on supported vehicles.

  • Direct-fit design for OE-style exhaust replacement
  • Standard catalyst type for regulated emissions service
  • 2-bolt welded flange inlet and outlet for secure exhaust connection
  • 57-inch overall length for application-specific fitment
  • Federal / EPA direct-fit undercar configuration

Fitment and Application

Fits 2017-2019 Cadillac XTS, rear. Fits 2013-2016 Cadillac XTS, rear. Fits 2011-2016 Buick LaCrosse, rear. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Use Eastern Convertors 50566 when replacing a rear catalytic converter on a Cadillac XTS or Buick LaCrosse with the listed direct-fit configuration. The part number 50566 is associated with OE-dimension construction and a substrate formulation intended to support efficient exhaust treatment within the specified application range.

What It Helps Resolve

  • Failed catalytic converter efficiency codes
  • Restricted exhaust flow from a worn converter
  • Emissions test failures on supported applications
  • Exhaust leaks at flange-connected converter joints

Installation Notes and Tips

Verify the vehicle’s emissions configuration and state restrictions before ordering. Confirm flange style, undercar layout, and rear position match the existing exhaust system. Because this is a direct-fit converter, installation is intended to follow the original exhaust routing on the listed applications.

Quality Assurance

Eastern Convertors uses automated workstations, spinner welding equipment, and high-speed production lines to build converters to exact OE dimensions. The proprietary NANO substrate chemistry is used to improve loading efficiency and converter performance. Part number 50566 is produced to support consistent fitment and emissions service on the listed applications.

Related reading

This part fits 13 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelDrive TypeLitersCylindersPositionNotes
2019CadillacXTSAWD3.6LV6RearNot for sale or use on vehicles licensed in the states of CA, CO, ME, and NY. Restrictions may apply in other states. Check with your state authority for details.
2018CadillacXTSAWD3.6LV6RearNot for sale or use on vehicles licensed in the states of CA, CO, ME, and NY. Restrictions may apply in other states. Check with your state authority for details.
2017CadillacXTSAWD3.6LV6RearNot for sale or use on vehicles licensed in the states of CA, CO, ME, and NY. Restrictions may apply in other states. Check with your state authority for details.
2016BuickLaCrosseAWD3.6LV6RearUndercar; Legal Note: Not For Sale or Use in the State of CA, CO, ME & NY (vehicles with CA Emissions); DIRECT FIT
2016CadillacXTSAWD3.6LV6RearLegal Note: Not For Sale or Use in the State of CA, CO, ME & NY (vehicles with CA Emissions); DIRECT FIT
2015BuickLaCrosseAWD3.6LV6RearUndercar; Legal Note: Not For Sale or Use in the State of CA, CO, ME & NY (vehicles with CA Emissions); DIRECT FIT
2015CadillacXTSAWD3.6LV6RearLegal Note: Not For Sale or Use in the State of CA, CO, ME & NY (vehicles with CA Emissions); DIRECT FIT
2014BuickLaCrosseAWD3.6LV6RearUndercar; Legal Note: Not For Sale or Use in the State of CA, CO, ME & NY (vehicles with CA Emissions); DIRECT FIT
2014CadillacXTSAWD3.6LV6RearLegal Note: Not For Sale or Use in the State of CA, CO, ME & NY (vehicles with CA Emissions); DIRECT FIT
2013BuickLaCrosseAWD3.6LV6RearUndercar; Legal Note: Not For Sale or Use in the State of CA, CO, ME & NY (vehicles with CA Emissions); DIRECT FIT
2013CadillacXTSAWD3.6LV6RearLegal Note: Not For Sale or Use in the State of CA, CO, ME & NY (vehicles with CA Emissions); DIRECT FIT
2012BuickLaCrosseAWD3.6LV6RearUndercar; Legal Note: Not For Sale or Use in the State of CA, CO, ME & NY (vehicles with CA Emissions); DIRECT FIT
2011BuickLaCrosseAWD3.6LV6RearUndercar; Legal Note: Not For Sale or Use in the State of CA, CO, ME & NY (vehicles with CA Emissions); DIRECT FIT