Brand-new high-flow reproduction 2-1/2" inlet catalytic converter for 1986-1987 Buick Grand National and Turbo Regal replaces GM# 25103338.
This performance catalytic converter is made in USA exclusively for Highway Stars and is not available anywhere else.
Using the newest technology available, we were able to produce a high-flow, performance catalytic converter that is about five pounds lighter than a GM factory original unit.
It is an exact fit replacement for a GM factory original unit, and hooks up just like the original/discontinued GM cat #25103338.
With our high-flow cat, there's no need to drive around in a stink-bomb anymore.
Best of all, what you see is exactly what you get.
The catalytic converter you receive:
- This Highway Stars product is an exact fit replacement part for stock systems
- It is NOT a universal aftermarket like what is found at other sites
- Highway Stars product will NOT DIFFER (even slightly) from our picture, so customers can be CONFIDENT WHEN PURCHASING FROM HIGHWAY STARS.
- Like a factory original unit, Highway Stars Cat does NOT have an air tube
Comes with a complete hardware kit (pictured) for stock inlet and outlet connections.\
The catalytic converter is approved in 49 US states. This catalytic converter is not "CARB" approved. (California Air Resources Board)
Another Highway Stars exclusive "keep-em-original" restoration part!