DORMAN 674-161 Cast Iron Natural Exhaust Manifold 019495017660 89-91

( Brand: Dorman ), ( Part Type: Exhaust Manifold ), ( Manufacturer Part Number: 674-161 ), ( Product Type: Exhaust ), ( UPC: 019495017660 ), ( California Prop 65 Warning: This Product Can Expose You To Chemicals Including Nickel ), ( Fitment Type: Direct Replacement ), ( Partslink Number: 12551443 ), ( Compatible Make S : Chevrolet, Gmc ), ( Compatible Model S : R2500 Suburban, V2500 Suburban, V20 Suburban, R20 Suburban ), ( Fitnote: Enginevinname ), ( Enginevinname: N ), ( Product Subtype: Exhaust Headers ), ( Material: Cast Iron ), ( Engine Version: 454 Chevy Big Block V8 Gen Iv-vi ), ( Color: Natural ), ( Department: Replacement )

Review DORMAN Chevy 89-91 Cast Iron Natural Exhaust Manifold fits SUBURBAN R2500

The Dorman 674-161 Exhaust Manifold is a high-quality, cast iron replacement part designed specifically for Chevy R2500 Suburbans manufactured between 1989 and 1991. This exhaust manifold is an essential component of your vehicle's exhaust system, responsible for collecting exhaust gases from the engine cylinders and channeling them towards the catalytic converter and muffler.

This Dorman exhaust manifold is a direct fit, ensuring easy installation with no modifications required. It is engineered to meet or exceed OE specifications for durability and performance. The cast iron material provides superior heat resistance and resistance to corrosion compared to alternative materials, making it an excellent choice for long-lasting use.

The Dorman 674-161 Exhaust Manifold features a natural exhaust flow design, which allows exhaust gases to exit the manifold more efficiently. This design improves engine performance by reducing back pressure and improving exhaust scavenging. The smooth, even exhaust flow also helps to reduce noise levels, making for a quieter ride.

The exhaust manifold is designed with a robust gasket surface that ensures a secure seal between the manifold and the engine cylinder head. The gasket surface is also engineered to withstand the extreme temperatures and pressures generated by the engine, ensuring a reliable seal that lasts.

This replacement exhaust manifold comes complete with all necessary hardware for installation, including exhaust studs and nuts. The hardware is made from high-strength materials to ensure a secure and lasting connection between the manifold and the exhaust system components.

Installing this Dorman exhaust manifold is a straightforward process that can be completed in a few hours with common hand tools. The manifold comes with clear, easy-to-follow installation instructions to guide you through the process. If you are not comfortable performing the installation yourself, we recommend having it done by a professional mechanic to ensure proper installation and optimal performance.

In summary, the Dorman 674-161 Exhaust Manifold is a high-quality, cast iron replacement part designed for Chevy R2500 Suburbans manufactured between 1989 and 1991. It is a direct fit, natural exhaust flow design that provides superior heat resistance, resistance to corrosion, and improved engine performance. The manifold comes complete with all necessary hardware for installation and is backed by Dorman's limited lifetime warranty for added peace of mind.

Dorman 674-161 Cast Iron Natural Exhaust Manifold for Chevy R2500 Suburban (1989-1991): A Valuable Upgrade or Just Another Part?

The Dorman 674-161 cast iron natural exhaust manifold is a replacement part designed for the Chevy R2500 Suburban models from 1989 to 1991. This part is essential for maintaining the proper functioning of the exhaust system. In this analysis, we will discuss the potential advantages and disadvantages of purchasing this product.

1. High-Quality Material: The Dorman 674-161 is made from cast iron, a durable material that is resistant to heat and corrosion. It is an excellent choice for those seeking a long-lasting exhaust manifold solution.

2. OEM-like Fit and Function: This part is designed to provide an OEM-like fit and function, ensuring a seamless integration into the existing exhaust system.

3. Improved Performance: By replacing the worn-out or damaged exhaust manifold, you can potentially improve your vehicle's overall performance. A well-functioning exhaust manifold allows for better fuel efficiency and reduced exhaust emissions.

4. Cost-Effective: Compared to other aftermarket or OEM alternatives, the Dorman 674-161 is a more cost-effective option.

1. Requires Professional Installation: Installing the exhaust manifold is a complex process that typically requires professional assistance. This might add extra costs to your overall purchase.

2. Potential for Backorders or Delays: Dorman parts, like the 674-161, are popular among vehicle enthusiasts and repair shops. Occasional backorders or shipping delays may occur, causing potential inconvenience.

3. Availability of Other Alternatives: There are various aftermarket and OEM exhaust manifolds available for the Chevy R2500 Suburban. Carefully consider the benefits and pricing of each alternative before making a decision.

The Dorman 674-161 cast iron natural exhaust manifold for the Chevy R2500 Suburban (1989-1991) is a valuable upgrade for those seeking a long-lasting, cost-effective solution to replace their worn-out exhaust manifold. While professional installation is required, the potential performance improvements, OEM-like fit, and durability make this part a worthwhile investment. Ultimately, it is essential to compare the Dorman 674-161 with other alternatives and consider your personal preferences and budget before making a final decision.

If you are in need of a replacement exhaust manifold for your Chevy R2500 Suburban (1989-1991) and are looking for a cost-effective, long-lasting solution, the Dorman 674-161 is an excellent choice. However, be sure to factor in the cost of professional installation and consider alternative options before making your purchase. Always consult with a trusted mechanic or exhaust system specialist to ensure the best outcome for your vehicle.

part # 674161 prices

• $114.99-$170.22

specifications maniheader:

• for models: R2500, Suburban
• for makes: Chevy
• brand: Dorman
• part type: Exhaust Manifold
• manufacturer part number: 674-161
• product type: Exhaust
• upc: 019495017660
• california prop 65 warning: This Product Can Expose You To Chemicals Including Nickel
• fitment type: Direct Replacement
• partslink number: 12551443
• compatible make s : Chevrolet, Gmc
• compatible model s : R2500 Suburban, V2500 Suburban, V20 Suburban, R20 Suburban
• fitnote: Enginevinname
• enginevinname: N
• product subtype: Exhaust Headers
• material: Cast Iron
• engine version: 454 Chevy Big Block V8 Gen Iv-vi
• color: Natural
• department: Replacement

general maniheader:

• Car Truck Parts Accessories > Exhaust Emission Systems > Manifolds Headers
• condition: New

offer maniheader:

• quantity: 5
• sold: 0
• options: Ship-to-home
• started: July 20, 2025
• availability: In Stock

payments maniheader:

• credit card: Diners-club
• wallet: Paypal
• other

seller maniheader:

• # reviews: 125977
• rating: 97.3%

shipping maniheader:

• class: Standard
• type: Fixed
• service: FedEx Ground or FedEx Home Delivery
• carrier: FedEx
• transit: 3-6 Days
• cost: $0.00

returns maniheader:

• policy: Returns Accepted
• time: 30 Days
• paid by: Seller

Dorman 674-161 Is Similar To:

• Dorman 674-746 Exhaust Manifold (52.3% similar) $99.00–$179.95. (September 19th, 2024)
• Dorman 53030932 99-04 Jeep Grand Cherokee Exhaust Manifolds Oem Mopar Left And Right Pair (37.9% similar) $44.99–$230.44. (October 15th, 2024)
• Dorman 674-782 Passenger Side Exhaust Manifold For Select Ford Models (45.6% similar) $458.07–$517.60. (November 21st, 2024)
• Dorman - Oe Solutions 674-128-ad Catalytic Converter With Integrated Exhaust Manifold For 2011-2012 Kia Optima Hy (39.4% similar) $797.98–$1128.04. (December 1st, 2024)
• Dorman 674-379 Exhaust Manifold (52.3% similar) $110.52–$111.95. (December 10th, 2024)
• Dorman 674-115 Exhaust Manifolds Driver Left Side For F150 Truck Hand F-150 (40% similar) $75.00–$94.85. (December 17th, 2024)
• Dorman - Oe Solutions 674-300 Exhaust Manifold With Integrated Catalytic Converter (37% similar) $578.72–$725.27. (December 18th, 2024)
• Dorman - Oe Solutions 674-196 For Jeep Grand Cherokee Comanche Wrangler Exhaust Manifold Tcp (52.3% similar) $255.79–$288.99. (December 20th, 2024)
• Dorman - Champ 674-165 Exhaust Manifolds (51.7% similar) $95.67–$163.80. (December 21st, 2024)
• Dorman 673-831 Manifold Converter Carb Compliant (32.8% similar) $175.00–$459.00. (December 25th, 2024)
• Dorman 673-930 Manifold Converter Carb Compliant (31.3% similar) $644.18–$1229.91. (December 25th, 2024)