The best driver side exhaust manifold depends on your vehicle’s exact year, make, model, and engine. The Dorman 674-522 is a strong option for buyers who want a kit with gaskets and hardware; the Dorman 674-497 is aimed at select Jeep Wagoneer and Ram 1500 applications and adds design changes intended to address thermal cycling. Other choices focus on specified Chrysler-family, Wrangler JK, or Ford/Lincoln vehicles. Confirm fitment before ordering.
| Product | Best For | Notable Feature |
|---|---|---|
| Dorman 674-522 | Buyers seeking an all-in-one replacement kit | Ductile iron construction and included hardware |
| Dorman 674-922 | Select Chrysler, Dodge, Jeep, and Ram owners | Gaskets and hardware included |
| Dorman 674-497 | Select Jeep Wagoneer and Ram 1500 owners | Thermal-cycling-focused design updates |
| Wrangler JK 3.8L Replacement | 2007–2011 Wrangler JK 3.8L V6 owners | Listed OE reference numbers |
| Dorman 674-695XD | Select Ford and Lincoln owners | Ceramic-coated design |
Dorman 674-522 Exhaust Manifold Kit
Best for: Drivers with a confirmed compatible vehicle who want a replacement manifold plus common installation components in one kit. Dorman says this manifold is reverse engineered from original equipment for direct-fit installation on select models.
The manifold is made from ductile iron, which the product description identifies as an upgrade intended to help prevent future warping and cracking. The kit includes the manifold, manifold gasket, flange gasket, three studs, and three nuts. Those included parts may simplify sourcing compared with buying the manifold alone.
Why it stands out: It combines stated material upgrades with a substantial list of included gaskets and hardware. Limitation: Compatibility is limited to select models, and the listing information provided does not identify every fitment. Check the vehicle application before purchase.
Dorman 674-922 Driver Side Manifold Kit
Best for: Owners of specified Chrysler, Dodge, Jeep, or Ram vehicles looking for a replacement designed to match the original equipment manifold. The product is described as an ideal replacement for vehicles with a warped, cracked, or failed original manifold.
Dorman describes the construction as rugged and intended to resist warping, cracking, and leaking. The kit includes required gaskets and hardware, and its stated purpose is to help restore reliable exhaust flow. Compared with a manifold-only option, the included components may make this a more convenient choice for a repair where the listed kit contents are needed.
Why it stands out: It combines a vehicle-family-specific application with included hardware and gaskets. Limitation: The fitment is not universal; verify the exact vehicle and engine application rather than relying on brand alone.
Dorman 674-497 Improved Design Manifold
Best for: Buyers with a compatible Jeep Wagoneer or Ram 1500 who want a design specifically described as addressing thermal cycling associated with a cylinder deactivation system. This is a targeted option, not a general-purpose manifold.
The product features an integrated upper flange intended to strengthen the manifold sides, a thicker lower flange, and a ceramic coating described as providing uniform heat distribution. Dorman says the part is engineered to help restore leak-free exhaust flow when the original manifold is warped, cracked, or failed.
Why it stands out: The listed structural and coating changes make it the most specifically updated design among these options. Limitation: The description names select Jeep Wagoneer and Ram 1500 vehicles, so confirm the exact application before ordering.
Wrangler JK 3.8L Left Exhaust Manifold
Best for: Owners of a 2007–2011 Jeep Wrangler JK with a 3.8L V6 who need a left-side replacement. The product description specifically lists this vehicle range and engine, making its stated application more focused than the select-model kits.
The listing provides several OE reference numbers: 4666024AB, 4666024AC, 4666024AD, and 101464. It also identifies the part as a replacement for the left exhaust manifold. These references can help buyers compare the listing with vehicle records or the part being replaced.
Why it stands out: Its stated Wrangler JK years and 3.8L V6 application are clear. Limitation: The supplied feature information does not mention included gaskets or hardware, so check the listing contents if those parts are needed.
Dorman 674-695XD Ceramic-Coated Manifold
Best for: Owners of select Ford or Lincoln models considering a ceramic-coated replacement. The coating is described as distributing heat more evenly, reducing hot and cold spots associated with cracks and inconsistent expansion and contraction that can contribute to gasket failures.
Dorman also says the design smooths the interior manifold surface and keeps heat within the manifold to support higher exhaust velocity and optimal operation. These are the manufacturer’s stated design goals; fitment still depends on the exact vehicle application.
Why it stands out: The ceramic coating and heat-management focus distinguish it from the other choices. Limitation: The provided information does not list specific Ford or Lincoln years and engines, so verify the exact fit before purchase.
Buying Guide: How To Choose A Driver Side Exhaust Manifold
How do you confirm the correct fit?
Start with the vehicle’s year, make, model, and engine. Then compare the product’s stated application and any OE reference numbers with your vehicle information or the original part. “Driver side” and “left side” identify the side, but they do not establish fitment by themselves. For products described for select models, confirm the specific application before buying.
Should you choose a kit or a manifold-only replacement?
A kit may be more convenient when it includes gaskets and installation hardware. The Dorman 674-522 and 674-922 descriptions explicitly list kit components. The Wrangler replacement’s supplied features do not specify included gaskets or hardware, so review the product contents if you need those parts. Do not assume every manifold includes installation components.
Do material and coating details matter?
They can help distinguish product designs. The 674-522 lists ductile iron construction, while the 674-497 and 674-695XD descriptions highlight ceramic coating and heat-related design goals. Choose based on the vehicle’s confirmed fit and the features relevant to your repair; product descriptions do not guarantee a particular service life.
When should you compare OE numbers?
Compare OE references when the product listing supplies them or when you can obtain the number from the existing part or vehicle records. The Wrangler JK replacement lists several reference numbers. A matching reference can support a fitment check, but it should not replace confirmation of the exact vehicle configuration.
Frequently Asked Questions
What does driver side mean for an exhaust manifold?
It identifies the manifold on the driver’s side of the vehicle. Product listings may also call this the left-side manifold.
Are these exhaust manifolds universal?
No. The products are described for select applications or specific vehicle configurations. Confirm year, make, model, and engine before ordering.
Does every option include gaskets and hardware?
No. The Dorman 674-522 and 674-922 descriptions list included gaskets and hardware. The supplied information for other products does not establish that those items are included.
Which option is listed for a 2007–2011 Wrangler JK 3.8L V6?
The left exhaust manifold replacement in this selection specifically lists the 2007–2011 Jeep Wrangler JK with a 3.8L V6.
What should I check before installing a replacement?
Confirm the part’s fitment and included components, then follow appropriate vehicle-specific service procedures. The product descriptions do not provide installation instructions.