Name: Dorman® 674-446 - Cast Iron Natural Exhaust Manifold
Brand: Dorman
SKU: mpn2072530484
Price: 110.58 USD
Availability: InStock
Rating: 4.8 (8 reviews)

Vehicle Fitment

Make	Model	Year
Chevy	W-Series	1996-2003
GMC	W-Series	1996-2003
Isuzu	N-Series	1996-2003
Workhorse	P-Series	2000-2004
	P30	2000-2005
	P32	2001-2002

Product Details

Cast Iron Natural Exhaust Manifold (674-446) by Dorman®. Position: Passenger Side. Color: Natural. Header Coating: Uncoated. This exhaust manifold was precision-engineered and durably manufactured to match the fit and function of the original manifold on specified vehicles. It includes all necessary gaskets and downpipe hardware for a complete repair.

Specifications

Header Material: Cast Iron

Finish: Natural

Position: Passenger Side

Heat Shield Included: No

Installation Hardware Included: Yes

Package Quantity: 1

Manifold Bolt Hole Quantity: 6

Gasket or Seal Included: Yes

Flange Bolt Hole Quantity: 0

Flange Stud Hole Quantity: 3

Item Grade: Regular

Inlet Port Shape: Square

Includes

Exhaust Manifold
1 Manifold Gasket
3 Studs
3 Nuts

Features

Ideal replacement - this exhaust manifold was precision-engineered and durably manufactured to match the fit and function of the stock manifold on specified vehicles
Reliable construction - durable materials resist warping, cracking and leaking for long-lasting performance
Complete repair - includes all necessary gaskets and downpipe hardware
Trustworthy design - built by industry leader in aftermarket manifolds
This part conforms to product standards

A rigorous quality inspection has been undertaken to ensure that this part conforms to product standards. More like a complete kit than a single part, many of the Exhaust Manifolds include gaskets and hardware for a complete installation.

When you want to get OEM quality without the high dealer price, Dorman is the right choice for you. Today you can fix your vehicle properly and have money left in your pocket with a Dorman product. It will look, function, and fit just like the part from the dealer, so your vehicle will operate as it should or even better. The Dorman product is designed using state-of-the-art technologies to exactly replicate the OEM unit, then it is manufactured with modern tooling so that the end product looks and fits exactly as designed. The unit is made to the same dimensions as the OEM part with the same gauge material. Dorman is confident in the quality of their products, which is why the company covers them with a limited lifetime warranty against any defects in materials and workmanship. Easily restore the appearance and function of your vehicle with Dorman products.

Dorman® - Exhaust Manifold Guide Dorman® - Catalog Dorman® - Information Dorman Authorized Dealer Product lines FAQ Warranty

Dorman Products® is well-known as a leader in providing quality auto parts to the aftermarket. They have earned their reputation for excellence from over three decades of experience in providing automotive replacement parts, fasteners and service line products primarily for the automotive aftermarket. Their prestigious position stems from a unique combination of application expertise, innovative product design, and breadth of product offerings, many of which are not conveniently or economically available elsewhere.

Brand:

Dorman

Part Number:

674-446

UPC:

019495036302

Alternate MPN:

674446

OE Numbers:

12554981, 8-12554-981-0, 8-93802-337-0, 93802337

Warranty

Dorman Products warrants that the product is free from defects in material and workmanship under normal use and service for the period stated below:

Hybrid battery – fleet: 12 months from the date of purchase
Hybrid battery – non-fleet: 36 months from the date of purchase
Manifold Converters: 60 months or 50,000 miles from the date of purchase
Heavy Duty DPF / DOC: 24 months from the date of purchase
Light Duty DPF / DOC: 24 months or 36,000 miles from the date of purchase
Heavy Duty EGR Coolers: 36 months from the date of purchase
Light Duty EGR Coolers: Limited Lifetime
All other products: Limited Lifetime

Dorman will replace any of its products that in Dorman's reasonable determination does not comply with the foregoing warranty. This warranty becomes null and void if the damage is caused by: misuse, abuse or accident; the attachment of any unauthorized accessory; alteration to the product; improper installation; exposure to harsh weather and/or chemicals; or lack of proper maintenance. This warranty also becomes null and void if the product is opened or any sticker is tampered with, broken, or missing, or if the damage is caused by any other condition that is beyond the control of Dorman Products.

In all cases, Dorman shall not be responsible for any type of incidental, consequential, or special damages. All other warranties, including the implied warranties of fitness for a particular purpose and the implied warranty of merchantability, are excluded.

By accepting this product, you hereby waive and release any claim now or hereafter existing against Dorman Products, its employees, officers, directors, agents and customers, on account of any and all claims, demands, suits, causes of action and all legal proceedings, whether civil or criminal, damages, losses, liabilities, (including, but not limited to, strict liability in tort), obligations, penalties, judgments or fines and other sanctions.

Federal and/or state laws may provide you with other warranties for this product. Some states do not allow the exclusion or limitation of incidental or consequential damages.

Reviews

(8)

Only authorized customers can leave a review on our website. We would love to know what you like or dislike about the product. Share your opinion on product quality, appearance, installation, and other characteristics.

Dorman® 674-446 - Cast Iron Natural Exhaust Manifold

1-8 of 8 Reviews

Sort by

3 of 5

Fits but....

Dorman® 674-895 - Cast Iron Natural Exhaust Manifold

Fit good. Flashing in all ports and the turbo side port was very bad and just crumbled apart. Would have easily broke off and went through the turbo. Had to file and chisel a lot. Ports on block side of manifold were a lot small the the OEM manifold. No gasket for turbo and the studs to short for turbo mount. I had to use the old ones. It did fit and I was able to make it. I would not recommend based on the issues I had. Better studs, better quality control and make the ports the same as OEM and this would be a awesome OEM replacement.

Posted by Jared (Boise, ID) / March 16, 20192008 Dodge Ram

5 of 5

Best Part for the Price!!!

Dorman® - Cast Iron Natural Exhaust Manifold

Looked all around and no one had it for this price. Perfect fit and came with all the gaskets needed to install it! Will buy from TRUCKiD again!!

Posted by James (Ramona, CA) / November 02, 20182010 Chevy HHR

5 of 5

Exhaust Manifold

Dorman® 674-417 - Cast Iron Natural Exhaust Manifold

The exhaust manifold was a perfect match for my truck.

Posted by Antonios (Hicksville, NY) / February 07, 20182005 Dodge Dakota

5 of 5

Exhaust Manifold for ‘05 Dakota

Dorman® 674-416 - Cast Iron Natural Exhaust Manifold

The exhaust manifolds fit perfectly in my Dakota.

Posted by Antonios (Hicksville, NY) / February 07, 20182005 Dodge Dakota

5 of 5

Quality Replacement Part

Dorman® 674-906 - Cast Iron Natural Exhaust Manifold

Product is a good direct fit manifold.

Posted by Gary (East Durham, NY) / October 29, 20172005 Dodge Ram

5 of 5

For Repairing Tricking Sound Manifold

Dorman® 674-961 - Cast Iron Natural Exhaust Manifold

Fit perfect for 3007 Ford Explorer 4.6 lifter.

Posted by Noel (Hammond, IN) / September 21, 20172007 Ford Sport Trac

5 of 5

Driver Side Manifold

Dorman® 674-587 - Cast Iron Natural Exhaust Manifold

The manifold looks awesome without any defects. Wasn't the easiest of installs but once it was in everything bolted right up just like it should. Looks great and quieted the engine right down. Increased horsepower as well. I would definitely recommend this to anyone.

Posted by Nicolas J (Bengor, ME) / August 20, 20172004 Ford F-150

5 of 5

Exahaust Manifolds

Dorman® 674-598 - Cast Iron Natural Exhaust Manifold

After all a good product, came in way faster than I thought, the stock ones were cracked in every corner, but they fit exactly like the stock ones.

Posted by Erick (Little Rock, AR) / July 08, 20172001 Nissan Frontier

Questions and Answers

(0)

If you have any questions about this product, please don't hesitate to ask us. We will be happy to help you!