Dorman 674-484 rear exhaust manifold catalytic converter for the 2012-2016 Buick LaCrosse V6 3.6L and other vehicles collects exhaust from the cylinders and passes it through a converter built into the same piece. It is a pre-converter that is not CARB compliant.
- One-piece stainless steel body with the catalytic converter built into the manifold
- Ceramic substrate in the converter section
- Flanged inlet and flanged outlet connections
- Kit with inlet and outlet gaskets and downpipe hardware
- Built within strict tolerances for reliable longevity
Quick facts
- Part: Dorman 674-484 exhaust manifold catalytic converter
- Also called: exhaust manifold with integrated catalytic converter
- Fits: 2012-2016 Buick LaCrosse V6 3.6L and other vehicles
- Position: Rear
- Material: Stainless steel
- Condition: New
A cracked manifold or a worn converter can show up as exhaust noise from the engine bay, a check engine light or a drop in performance. Oxygen sensors, a leaking gasket or the downpipe can be behind those signs too, so find the cause before buying. This listing is one piece, and each engine takes one in the rear position.
Fits
It is a direct replacement for the 2012-2016 Buick LaCrosse V6 3.6L, the 2010 Buick LaCrosse V6 3.0L and the 2010 Buick Allure V6 3.0L.
Specifications
Fit and size
- Position: Rear
- Quantity per vehicle: 1
- Overall length: 14.5 in
- Converter body length: 4 in
- Tube wall thickness: 0.15 in
- Inlet: flanged, round port, 4 mounting holes
- Outlet: flanged, oval port, 2 mounting holes
Build and materials
- Type: One-piece
- Material: Stainless steel
- Substrate: Ceramic
- Grade: Standard replacement
- CARB certified: No
- New York certified: No
- Condition: New
- Country of origin: United States
In the box
One exhaust manifold catalytic converter, one inlet gasket, one outlet gasket, two studs and two bolts. Inlet mounting hardware, clamps and hangers are not included, so plan on new fasteners for the inlet side.
Interchange: 106205609846107575 · 641445 · 19510 · 50496 · 20805599 · 20907414 · 20965398 · 22737797 · 23275381 · 23275383 · 52902 · 536008
This part cross-references / interchanges with the following part numbers:
106205609846107575, 641445, 19510, 50496, 20805599, 20907414, 20965398, 22737797, 23275381, 23275383, 52902, 536008
Frequently Asked Questions
Does Dorman 674-484 fit the 2010 Buick Allure V6 3.0L?
Yes. Dorman 674-484 is listed for the 2010 Buick Allure V6 3.0L, and that engine takes one rear exhaust manifold catalytic converter.
Is this Dorman exhaust manifold with integrated catalytic converter CARB compliant?
No. It is a pre-converter that is not CARB compliant, and it is not New York certified.
Does Dorman 674-484 come with gaskets and bolts?
Yes. It includes an inlet gasket, an outlet gasket, two studs and two bolts. Inlet mounting hardware, clamps and hangers are not included.
What is the substrate in this rear exhaust manifold catalytic converter?
The substrate is ceramic, and the one-piece body is stainless steel. The inlet and outlet are both flanged.
How can I tell if this rear exhaust manifold catalytic converter is cracked?
With the engine off and cool, look for cracks, rust-through or soot streaks at the flanges. A ticking exhaust noise or a check engine light can also point to a problem, and a shop can test the converter itself.
