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Infiniti Replacement Exhaust Manifolds


Excellent capability and high performance are dependent on top-notch parts and accessories. When you selected your Infiniti, you invested in a vehicle with great performance and notable style; you want to protect your decision by using only the most top-notch parts and accessories. The sleek appearance and reliable performance of the Infiniti make every trip more enjoyable. An Infiniti Exhaust Manifold gathers gases from the motor and expels them through the exhaust pipe. Carefully tuned Infiniti Exhaust Manifolds increase a vehicle's engine power by decreasing back pressure and boosting volumetric efficiency. High-end headers make use of primary tubes tuned by length and are tuned to the engine's resonant frequency to improve exhaust velocity, boosting engine muscle. If you treasure your vehicle, make sure to insist on high performance grade parts to maintain it. Trust our live automotive technology professionals to assist you when you make a purchase of quality aftermarket replacement automotive parts so you receive exactly what you ordered each and every time you shop at our web store. When you need the very best deals on great auto parts at outstanding prices, point your browser at www.partsgeek.com.


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Showing 1 to 10 of 43 Products
Review Fitment Notes to Ensure Proper Fit

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(Read reviews)
Our List Price: $415.33
(2) In Stock
Product SKU: INF4525P
Product Note: Exhaust Manifold with Integrated Catalytic Converter -- Exhaust Manifold With Bank #2 Converter; E.P.A COMPLIANT
Position of Product: Right
Inventory: In Stock
Condition: New

Shipping Options:
Ground

5 Year / 50,000 Mile DEC Limited Warranty

{We currently do not ship this catalytic converter to California or New York}
Additional Fitment Information: Catalog: B
Vehicle Engine
2011 (11) Infiniti QX56 5.6L V8 


Click to Enlarge
(1 Reviews)
5 Stars
Dorman 674-844
Exhaust Manifold with Integrated Catalytic Converter
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Loading Reviews...
Our List Price: $434.95
with FREE Shipping
(10) In Stock
Product SKU: 674-844
Product Note: Exhaust Manifold with Integrated Catalytic Converter
Position of Product: Left
Inventory: In Stock
Condition: New

Shipping Options:
Free Ground Shipping

Lifetime Dorman Limited Warranty

{We currently do not ship this catalytic converter to California or New York}
Additional Fitment Information: Catalog: B
Vehicle Engine
2005 (05) Infiniti QX56 5.6L V8 


Click to Enlarge
(Read reviews)
Our List Price: $466.33
(7) In Stock
Product SKU: INF4526D
Product Note: Exhaust Manifold with Integrated Catalytic Converter -- Exhaust Manifold With Bank #1 Converter; E.P.A COMPLIANT
Position of Product: Left
Inventory: In Stock
Condition: New

Shipping Options:
Ground

5 Year / 50,000 Mile DEC Limited Warranty

{We currently do not ship this catalytic converter to California or New York}
Additional Fitment Information: Catalog: B
Vehicle Engine
2003 (03) Infiniti Q45 4.5L V8 


Click to Enlarge
(Read reviews)
Our List Price: $415.33
(2) In Stock
Product SKU: INF4525D
Product Note: Exhaust Manifold with Integrated Catalytic Converter -- Exhaust Manifold With Bank #1 Converter; E.P.A COMPLIANT
Position of Product: Left
Inventory: In Stock
Condition: New

Shipping Options:
Ground

5 Year / 50,000 Mile DEC Limited Warranty

{We currently do not ship this catalytic converter to California or New York}
Additional Fitment Information: Catalog: B
Vehicle Engine
2011 (11) Infiniti QX56 5.6L V8 


Click to Enlarge
(Read reviews)
Our List Price: $458.33
(5) In Stock
Product SKU: INF4523P
Product Note: Exhaust Manifold with Integrated Catalytic Converter -- Exhaust Manifold With Bank #2 Converter; E.P.A COMPLIANT
Position of Product: Right
Inventory: In Stock
Condition: New

Shipping Options:
Ground

5 Year / 50,000 Mile DEC Limited Warranty

{We currently do not ship this catalytic converter to California or New York}
Additional Fitment Information: Catalog: B
Vehicle Engine
2008 (08) Infiniti M45 4.5L V8 


Click to Enlarge
(Read reviews)
Our List Price: $458.33
(6) In Stock
Product SKU: INF4523D
Product Note: Exhaust Manifold with Integrated Catalytic Converter -- Exhaust Manifold With Bank #1 Converter; E.P.A COMPLIANT
Position of Product: Left
Inventory: In Stock
Condition: New

Shipping Options:
Ground

5 Year / 50,000 Mile DEC Limited Warranty

{We currently do not ship this catalytic converter to California or New York}
Additional Fitment Information: Catalog: B
Vehicle Engine
2003 (03) Infiniti FX45 4.5L V8 


Click to Enlarge
(Read reviews)
Our List Price: $415.33
(2) In Stock
Product SKU: INF4525P
Product Note: Exhaust Manifold with Integrated Catalytic Converter -- Exhaust Manifold With Bank #2 Converter; E.P.A COMPLIANT
Position of Product: Right
Inventory: In Stock
Condition: New

Shipping Options:
Ground

5 Year / 50,000 Mile DEC Limited Warranty

{We currently do not ship this catalytic converter to California or New York}
Additional Fitment Information: Catalog: B
Vehicle Engine
2012 (12) Infiniti QX56 5.6L V8 


Click to Enlarge
(1 Reviews)
5 Stars
Dorman 674-844
Exhaust Manifold with Integrated Catalytic Converter
Close
Loading Reviews...
Our List Price: $434.95
with FREE Shipping
(10) In Stock
Product SKU: 674-844
Product Note: Exhaust Manifold with Integrated Catalytic Converter
Position of Product: Left
Inventory: In Stock
Condition: New

Shipping Options:
Free Ground Shipping

Lifetime Dorman Limited Warranty

{We currently do not ship this catalytic converter to California or New York}
Additional Fitment Information: Catalog: B
Vehicle Engine
2004 (04) Infiniti QX56 5.6L V8 


Click to Enlarge
(1 Reviews)
5 Stars
Dorman 674-843
Exhaust Manifold with Integrated Catalytic Converter
Close
Loading Reviews...
Our List Price: $434.95
with FREE Shipping
(8) In Stock
Product SKU: 674-843
Product Note: Exhaust Manifold with Integrated Catalytic Converter
Position of Product: Right
Inventory: In Stock
Condition: New

Shipping Options:
Free Ground Shipping

Lifetime Dorman Limited Warranty

{We currently do not ship this catalytic converter to California or New York}
Additional Fitment Information: Catalog: B
Vehicle Engine
2005 (05) Infiniti QX56 5.6L V8 


Click to Enlarge
(1 Reviews)
5 Stars
Dorman 674-843
Exhaust Manifold with Integrated Catalytic Converter
Close
Loading Reviews...
Our List Price: $434.95
with FREE Shipping
(8) In Stock
Product SKU: 674-843
Product Note: Exhaust Manifold with Integrated Catalytic Converter
Position of Product: Right
Inventory: In Stock
Condition: New

Shipping Options:
Free Ground Shipping

Lifetime Dorman Limited Warranty

{We currently do not ship this catalytic converter to California or New York}
Additional Fitment Information: Catalog: B
Vehicle Engine
2006 (06) Infiniti QX56 5.6L V8 


Click to Enlarge
(1 Reviews)
5 Stars
Dorman 674-844
Exhaust Manifold with Integrated Catalytic Converter
Close
Loading Reviews...
Our List Price: $434.95
with FREE Shipping
(10) In Stock
Product SKU: 674-844
Product Note: Exhaust Manifold with Integrated Catalytic Converter
Position of Product: Left
Inventory: In Stock
Condition: New

Shipping Options:
Free Ground Shipping

Lifetime Dorman Limited Warranty

{We currently do not ship this catalytic converter to California or New York}
Additional Fitment Information: Catalog: B
Vehicle Engine
2007 (07) Infiniti QX56 5.6L V8 


Click to Enlarge
(1 Reviews)
5 Stars
Dorman 674-844
Exhaust Manifold with Integrated Catalytic Converter
Close
Loading Reviews...
Our List Price: $434.95
with FREE Shipping
(10) In Stock
Product SKU: 674-844
Product Note: Exhaust Manifold with Integrated Catalytic Converter
Position of Product: Left
Inventory: In Stock
Condition: New

Shipping Options:
Free Ground Shipping

Lifetime Dorman Limited Warranty

{We currently do not ship this catalytic converter to California or New York}
Additional Fitment Information: Catalog: B
Vehicle Engine
2006 (06) Infiniti QX56 5.6L V8 


Click to Enlarge
(Read reviews)
Our List Price: $466.33
(7) In Stock
Product SKU: INF4526D
Product Note: Exhaust Manifold with Integrated Catalytic Converter -- Exhaust Manifold With Bank #1 Converter; E.P.A COMPLIANT
Position of Product: Left
Inventory: In Stock
Condition: New

Shipping Options:
Ground

5 Year / 50,000 Mile DEC Limited Warranty

{We currently do not ship this catalytic converter to California or New York}
Additional Fitment Information: Catalog: B
Vehicle Engine
2003 (03) Infiniti M45 4.5L V8 


Click to Enlarge
(Read reviews)
Our List Price: $466.33
(7) In Stock
Product SKU: INF4526D
Product Note: Exhaust Manifold with Integrated Catalytic Converter -- Exhaust Manifold With Bank #1 Converter; E.P.A COMPLIANT
Position of Product: Left
Inventory: In Stock
Condition: New

Shipping Options:
Ground

5 Year / 50,000 Mile DEC Limited Warranty

{We currently do not ship this catalytic converter to California or New York}
Additional Fitment Information: Catalog: B
Vehicle Engine
2006 (06) Infiniti Q45 4.5L V8 


Click to Enlarge
(Read reviews)
Our List Price: $458.33
(5) In Stock
Product SKU: INF4523P
Product Note: Exhaust Manifold with Integrated Catalytic Converter -- Exhaust Manifold With Bank #2 Converter; E.P.A COMPLIANT
Position of Product: Right
Inventory: In Stock
Condition: New

Shipping Options:
Ground

5 Year / 50,000 Mile DEC Limited Warranty

{We currently do not ship this catalytic converter to California or New York}
Additional Fitment Information: Catalog: B
Vehicle Engine
2006 (06) Infiniti M45 4.5L V8 


Click to Enlarge
(Read reviews)
Product List Price:
$234.90
Our List Price: $63.95
with FREE Shipping
(2) In Stock
Product SKU: W0133-1611423
Product Note: Production: -12/1999
Detailed Note: Includes Gaskets
Position of Product: Left
Inventory: In Stock
Condition: New

Shipping Options:
Free Ground Shipping
Additional Fitment Information: Catalog: A
Vehicle Production Range
2000 (00) Infiniti QX4 To:12-00-99 


Click to Enlarge
(Read reviews)
Our List Price: $427.98
(1) In Stock
Product SKU: 16479
Product Note: EPA Ultra Manifold Converter -- Fits Fed. & Calif. Emissions Models.; Not legal for sale in the state of California. Not legal for use on California emission vehicles in New York. Legal for use on Federal/EPA emission vehicles in New York.; Additional Parts Needed: 31576
Position of Product: Right
Inventory: In Stock
Condition: New

Shipping Options:
Ground

5 Year / 50,000 Mile Walker Limited Warranty

{We currently do not ship this catalytic converter to California or New York}
Additional Fitment Information: Catalog: H
Vehicle Engine
2010 (10) Infiniti QX56 5.6L V8 


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Some of our Customer Reviews
Somewhat Satisfied
Reviewer: Teo Chavdarov

Great product!!!

I'll order from them. When you find a company that does what it says, it's foolish not to use them.

1998 Infiniti Q45 Exhaust Manifold

Very Satisfied
Reviewer: Excellent Product

Replaced both manifolds with no issues on fitment. Excellent parts.

2007 Infiniti QX56 Exhaust Manifold with Integrated Catalytic Converter


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