Dorman 673-309 left exhaust manifold catalytic converter for the 2012-2015 Toyota Tacoma V6 4.0L combines the exhaust manifold and catalytic converter in one piece. It is also called a Dorman exhaust manifold with integrated catalytic converter, and it carries exhaust from the engine through the catalyst.
- One-piece stainless steel body made within strict tolerances
- Ceramic substrate inside the converter
- CARB certified under Executive Order D-798-14, and New York certified
- 10 mm sensor port for a pre-converter oxygen sensor
- Kit with gaskets and downpipe hardware included
- Part of the Dorman OE Solutions line
Quick facts
- Part: Dorman 673-309 exhaust manifold catalytic converter
- Also called: exhaust manifold with integrated catalytic converter
- Fits: 2012-2015 Toyota Tacoma V6 4.0L
- Position: Left
- Material: Stainless steel
- Condition: New
A ticking exhaust leak, a rattle from inside the converter or a catalyst-efficiency code can mean the exhaust manifold catalytic converter is worn or damaged. Before you replace it, rule out a leaking gasket or a failing oxygen sensor, since a fault in either can also set off a catalyst code.
Fits
This is a direct-fit replacement for the 2012-2015 Toyota Tacoma V6 4.0L, made for the left side. The 2012-2015 Toyota Tacoma V6 4.0L takes one on the left side, and the right side is ordered separately.
Specifications
Fit and size
- Position: Left
- Quantity per vehicle: 1
- Overall length: 28 in
- Inlet inside diameter: 2.15 in
- Outlet inside diameter: 1.75 in
- Outlet outside diameter: 2.25 in
- Converter body: 4 in long, 4 in wide, 4 in high
- Sensor port size: 10 mm
- Inlet: 3 flanged inlets, 9 mounting holes
- Outlet: 1 flanged outlet, 3 mounting holes
Build and materials
- Type: One-piece
- Material: Stainless steel
- Substrate: Ceramic
- Finish: Uncoated
- Tube wall thickness: 0.125 in
- Oxygen sensor location: Pre-converter
- CARB Executive Order number: D-798-14
- Condition: New
- Country of origin: United States
In the box
One exhaust manifold catalytic converter, an inlet gasket, an outlet gasket and an EGR gasket, plus four studs, four nuts, one bolt and one washer. Inlet mounting hardware, clamps and hangers are not included, so plan on new fasteners for the inlet side, since the old ones may not be reusable.
Interchange: 171500P230
Frequently Asked Questions
Is Dorman 673-309 the left or right exhaust manifold catalytic converter for the 2012-2015 Toyota Tacoma V6 4.0L?
Dorman 673-309 is the left-side unit and fits the 2012-2015 Toyota Tacoma V6 4.0L. The right side is ordered separately.
Does this exhaust manifold catalytic converter come with gaskets and studs?
Yes. This exhaust manifold catalytic converter comes with inlet, outlet and EGR gaskets, four studs, four nuts, one bolt and one washer. Clamps, hangers and inlet mounting hardware are not included.
Is the Dorman 673-309 exhaust manifold catalytic converter CARB compliant?
Yes. Dorman 673-309 is CARB certified under Executive Order D-798-14 and is also New York certified, when used on an approved application.
What are the inlet and outlet diameters of this exhaust manifold catalytic converter?
The inlet inside diameter is 2.15 in and the outlet inside diameter is 1.75 in. The outlet outside diameter is 2.25 in, and overall length is 28 in.
How can I check a left exhaust manifold catalytic converter for leaks or a rattle?
With the engine off and cool, look for cracks or soot at the flanges and gaskets, and note any rattle from the converter while driving. A shop can test catalyst efficiency.
