Dorman 674-068 Catalytic Converter with Integrated Exhaust Manifold - Rear

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Dorman 674-068 Catalytic Converter with Integrated Exhaust Manifold - Rear

Brand	Dorman 674-068
Position	Rear
Color	Natural
Grade Type	Regular
Converter Body Length	4
Outlet Type	Flanged
Inlet Quantity	1
Outlet Quantity	1
California Air Resources Board (CARB) Certified	No
Inlet Mounting Hole Quantity	4
Inlet Gasket Included	Yes
Inlet Mounting Hardware Included	No
Outlet Mounting Hole Quantity	2
Outlet Mounting Hardware Included	Yes
Overall Length	14
Air Tube Count	0
Sensor Port Count	1
Converter Body Material	Stainless steel
CARB Executive Order Number	Not carb compliant
Inlet Port Shape	Oval
Package Contents	1 exhaust manifold; 1 outlet gasket; 2 studs; 2 nuts
Fits	Buick, Cadillac, Chevrolet, and GMC · 21 vehicles

OE-style replacement. Precision-engineered to match original equipment for a reliable fit.

Stainless steel body. Helps resist corrosion in demanding exhaust conditions.

Integrated manifold design. Combines the converter and manifold into one assembly.

Cross-references 23386841 for the same application. See all 1.

$515.38Free shipping

In stock · usually ships same day before 1pm CST

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Not what you need? See all Catalytic Converter with Integrated Exhaust Manifold options

Dorman 674-068 Catalytic Converter Manifold

Dorman 674-068 is a catalytic converter with integrated exhaust manifold for rear-position applications on select Buick, Chevrolet, Cadillac, and GMC vehicles. It is built to match original equipment dimensions and mounting points for a direct replacement on the listed applications.

Integrated exhaust manifold and catalytic converter design
Stainless steel converter body for exhaust durability
Natural finish
Flanged outlet design
1 inlet, 1 outlet, and 1 sensor port
Inlet gasket included; outlet mounting hardware included
Not CARB compliant

Vehicle Fitment

Fits 2018-2024 Buick Enclave, rear. See TSB PIP5681C prior to purchase.
Fits 2024 Chevrolet Traverse Limited, rear. See TSB PIP5681C prior to purchase.
Fits 2018-2023 Chevrolet Traverse, rear. See TSB PIP5681C prior to purchase.
Fits 2017-2019 Cadillac XT5, rear.
Fits 2019 Chevrolet Blazer, rear.
Fits 2017-2019 GMC Acadia, rear.

Detailed Description

This manifold converter is engineered as an OE-style replacement for rear exhaust service on the Buick Enclave, Chevrolet Traverse, Chevrolet Traverse Limited, Cadillac XT5, Chevrolet Blazer, and GMC Acadia applications listed above. The stainless steel converter body, oval inlet port shape, and flanged outlet help support proper fitment, while the integrated manifold layout simplifies replacement of the exhaust manifold and catalytic converter assembly in one service operation. Part number 674-068 is also referenced by interchange number 23386841.

Common Repair Applications

Exhaust leaks at the manifold converter assembly
Cracked or corroded exhaust manifold housing
Restricted catalytic converter flow
Failed sensor-port-equipped exhaust assembly
Check engine light concerns tied to exhaust efficiency or sealing issues

Installation Notes and Tips

Verify rear-position fitment and review TSB PIP5681C before purchase for the listed Buick Enclave and Chevrolet Traverse applications. Confirm the inlet port shape, mounting hole count, and sensor port count against the original assembly before installation. Use the included inlet gasket and outlet mounting hardware as specified by the vehicle service procedure. Part number 674-068 should be matched to the exact year, make, model, and rear position shown in the fitment list.

Quality Assurance

Dorman manufactures this catalytic converter with integrated exhaust manifold as a regular-grade replacement part built to match original equipment specifications for the listed vehicles. Part number 674-068 is not CARB certified and is not CARB compliant.

This part fits 21 vehicles

Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

Year	Make	Model	Liters	Cylinders	Position	Notes
2024	Buick	Enclave	3.6L	V6	Rear	See TSB PIP5681C Prior to Purchase
2024	Chevrolet	Traverse Limited	3.6L	V6	Rear	See TSB PIP5681C Prior to Purchase
2023	Buick	Enclave	3.6L	V6	Rear	See TSB PIP5681C Prior to Purchase
2023	Chevrolet	Traverse	3.6L	V6	Rear	See TSB PIP5681C Prior to Purchase
2022	Buick	Enclave	3.6L	V6	Rear	See TSB PIP5681C Prior to Purchase
2022	Chevrolet	Traverse	3.6L	V6	Rear	See TSB PIP5681C Prior to Purchase
2021	Buick	Enclave	3.6L	V6	Rear	See TSB PIP5681C Prior to Purchase
2021	Chevrolet	Traverse	3.6L	V6	Rear	See TSB PIP5681C Prior to Purchase
2020	Buick	Enclave	3.6L	V6	Rear	See TSB PIP5681C Prior to Purchase
2020	Chevrolet	Traverse	3.6L	V6	Rear	See TSB PIP5681C Prior to Purchase
2019	Buick	Enclave	3.6L	V6	Rear	See TSB PIP5681C Prior to Purchase
2019	Cadillac	XT5	3.6L	V6	Rear	CARB Compliant: No; CARB Compliant: No
2019	Chevrolet	Blazer	3.6L	V6	Rear	CARB Compliant: No; CARB Compliant: No
2019	Chevrolet	Traverse	3.6L	V6	Rear	See TSB PIP5681C Prior to Purchase
2019	GMC	Acadia	3.6L	V6	Rear	CARB Compliant: No; CARB Compliant: No
2018	Buick	Enclave	3.6L	V6	Rear	See TSB PIP5681C Prior to Purchase
2018	Cadillac	XT5	3.6L	V6	Rear	CARB Compliant: No; CARB Compliant: No
2018	Chevrolet	Traverse	3.6L	V6	Rear	See TSB PIP5681C Prior to Purchase
2018	GMC	Acadia	3.6L	V6	Rear	CARB Compliant: No; CARB Compliant: No
2017	Cadillac	XT5	3.6L	V6	Rear	CARB Compliant: No; CARB Compliant: No
2017	GMC	Acadia	3.6L	V6	Rear	CARB Compliant: No; CARB Compliant: No
No rows match your filter.

Directly replaces or cross-references 1 part number

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.

23386841