Description
Product Overview
The Dorman 674-498 right‑side exhaust manifold is engineered specifically for select Jeep Wagoneer and Ram 1500 vehicles. Constructed from high‑strength steel, the manifold arrives ready to paint, allowing seamless integration with factory finishes. Key innovations include an integrated upper flange that reinforces the side walls, a thicker lower flange for added rigidity, and a ceramic coating that ensures uniform heat distribution across the exhaust path. Dimensions measure 19.5 x 8.6 x 5.6 inches and the unit weighs 15.5 pounds, making handling straightforward during installation. The part carries the OEM number 68591572AB, guaranteeing a direct fit where the original component has warped, cracked, or failed.
Usage
This exhaust manifold is ideal for drivers who demand reliable performance from their heavy‑duty trucks and SUVs, especially in demanding conditions such as towing, off‑road adventures, or high‑temperature engine operation. By replacing a compromised OEM manifold, owners can restore proper exhaust flow, reduce back‑pressure, and protect the cylinder deactivation system from thermal cycling damage. Installation is suited for both professional mechanics and experienced DIY enthusiasts. 
Why Choose Us
Dorman brings over a century of automotive expertise to every component, and this manifold is no exception. Backed by a dedicated U.S. product‑expert team, the design incorporates feedback from real‑world service technicians to address common failure points. The ceramic coating not only improves heat dispersion but also resists corrosion, extending the part’s service life. Each unit undergoes rigorous quality testing to meet or exceed OEM specifications, ensuring a leak‑free fit that maintains engine efficiency and emissions compliance.
Key Features
- Integrated upper flange strengthens side walls for added durability
- Thicker lower flange reduces flex and prevents warping under heat
- Ceramic coating provides uniform heat distribution and corrosion resistance
- Paint‑ready finish matches factory aesthetics and simplifies installation
- Direct OEM fit for Jeep Wagoneer and Ram 1500 models, eliminating modification needs
FAQ
Will this manifold fit my specific model year?
Yes, the Dorman 674-498 is designed to fit the specified Jeep Wagoneer and Ram 1500 model years. Verify fit by entering your VIN in the garage tool and checking the Confirmed Fit indicator.
Do I need to modify the exhaust system after installation?
No additional modifications are required. The manifold is engineered to match OEM bolt patterns and clearances, providing a plug‑and‑play replacement.
Is the ceramic coating safe for high‑performance applications?
Absolutely. The ceramic coating is formulated to withstand extreme exhaust temperatures while promoting even heat spread, which supports both daily driving and high‑performance use.
Can I paint the manifold to match my vehicle’s color?
Yes, the manifold arrives paint‑ready. You can apply a high‑temperature automotive paint to achieve a seamless factory look.
What warranty does Dorman offer on this part?
Dorman provides a limited warranty that covers defects in material and workmanship, reflecting confidence in the part’s durability and performance.




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