1991 GMC G-Series Exhaust Headers & Manifolds
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TRQ®Exhaust ManifoldGMC G-Series 7.4L 1991, Exhaust Manifold by TRQ®. Position: Passenger Side. Made with quality in mind, this high-grade TRQ exhaust manifold fits right away without any trouble. It is built using the latest technology and innovation to...Intended to bring your vehicle back to its original gloryBudget-friendly alternative to the OEM part$93.95$99.95Save $6.00 (6%) - Dorman®Natural Exhaust ManifoldGMC G-Series 1991, Natural Exhaust Manifold by Dorman®. 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...Ideal replacement - this exhaust manifold was precision-engineered and durably manufactured to match the fit and function of the stock manifold on specified vehiclesReliable construction - durable materials resist warping, cracking and leaking for long-lasting performance$80.36 - $160.66
- ATP®Natural Exhaust ManifoldGMC G-Series 1991, Natural Exhaust Manifold by ATP®. Color: Natural. Header Coating: Uncoated. ATP Graywerks Exhaust Manifolds are a high quality OE replacement alternative. Each manifold is developed off of the original parts...Manufactured to OE design ensuring manifold will line up and flow like the original unitHigh grade metallurgy resists fatigue cracking and breakage$94.75 - $185.33
- Davico®Exhaust Manifold with Integrated Catalytic ConverterGMC G-Series 1991, Exhaust Manifold with Integrated Catalytic Converter by Davico®. This product by Davico will be a great solution to replace your failed or damaged catalytic converter. Once your stock cat fails to perform its job,...Helps your vehicle emit harmless gasesDirect OEM replacement$305.32 - $428.95
- SKP®Exhaust ManifoldGMC G-Series 7.4L 1991, Exhaust Manifold by SKP®. Position: Passenger Side. Put your vehicle back to its original condition with this top-notch transfer case component designed to efficiently transmit the engine power to both the front...Designed to send the engine power to both the front and rear axlesDirect-fit replacement for your overworked, out-of-shape transfer case$103.89
- Dorman®Exhaust Manifold Hardware KitGMC G-Series 1991, Exhaust Manifold Hardware Kit by Dorman®. Dorman manifold bolt and spring kits are just what you need to secure the front flange. Dorman offers products like fasteners and solutions to keep your vehicle running its best.Direct replacement for a proper fitBuilt to Last$19.10 - $22.71
- ARP®Header Bolt KitGMC G-Series 1991, Header Bolt Kit by ARP®. ARP manufactures a variety of premium grade bolt and stud kits to facilitate installation of exhaust headers including the popular stainless stud kit with 12-point nuts. The Stainless material...Designed to unlock more performance out of your vehicleDeliver a reasonable balance of strength and durability$21.63 - $119.06
- Stage 8®Steel Nickel plated Header Locking Bolt KitGMC G-Series 5.0L / 5.7L 1991, Steel Nickel plated Header Locking Bolt Kit by Stage 8®. Stage 8 locking fastener solutions are fail-safe when used and installed as directed. They are removable and reusable and can be visually inspected;...Thoughtfully designed for the highest efficiency and safetyWill provide more breakaway torque than any other locking system$68.22 - $124.40
- ACDelco®Genuine GM Parts™ Exhaust Manifold GasketsGMC G-Series 7.4L 1991, Genuine GM Parts™ Exhaust Manifold Gaskets by ACDelco®. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform better than advertised. Perfect for your...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$24.81
- Fel-Pro®Exhaust Manifold Gasket SetGMC G-Series 1991, Exhaust Manifold Gasket Set by Fel-Pro®. If you need durable gaskets to prevent leaks on your vehicle, Fel-Pro is the way to go. Engineered using the latest technologies and global engineering resources, the gaskets...Ensures reliable sealing performanceMade using advanced technologies and molded rubber chemistry$7.65 - $33.89
- BBK®Premium Header Gasket SetGMC G-Series 5.0L / 5.7L for Stock Or CNC Ported Heads 1991, Premium Header Gasket Set by BBK®. These premium steel core graphite gaskets are flexible for a long lasting leak-proof seal even when cylinder head and header flange surfaces...Provides a long lasting, leak-proof sealFlexible graphite will conform to surface irregularities and won't stick to headers or cylinder head$44.99
- Mahle®Exhaust Manifold Gasket SetGMC G-Series 1991, Exhaust Manifold Gasket Set by Mahle®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and...High quality at an affordable priceExpertly made from premium materials$6.85 - $29.82
- Remflex®Exhaust Header GasketsGMC G-Series 1991, Exhaust Header Gaskets by Remflex®. Remflex's unique flexible graphite material has been proven for more than 30 years in industrial applications. Whether you have an old pick-up that needs a manifold gasket or a race...Designed to crush 50%This allows them to fill gaps in the flange surface up to 1/16"$37.35 - $39.43
- Patriot Exhaust®Percy's Seal-4-Good™ Exhaust Header GasketsGMC G-Series 1991, Percy's Seal-4-Good™ Exhaust Header Gaskets by Patriot Exhaust®. This superior Patriot Exhaust product is just for you. Carefully designed for maximum performance, is will more than just meet your needs and...Special "dead soft" aluminum conforms to flange to make an excellent sealSolid metal gasket will not blow out$44.95
- Apex Auto®Exhaust Manifold Gasket SetGMC G-Series 1991, Exhaust Manifold Gasket Set by Apex Auto®. Designed utilizing the latest technology, this product by Apex Auto features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle,...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$5.13 - $13.49
- Patriot Exhaust®Percy's Seal-4-Good™ Aluminum Header Flange GasketsGMC G-Series 1991, Percy's Seal-4-Good™ Aluminum Header Flange Gaskets by Patriot Exhaust®. Hanger made from Steel. Great for bringing back the custom car look some popular in the 50's and 60's.Will cover your exhaust needs and even moreBuilt to last$44.95
- Fel-Pro®Exhaust Manifold Hardware KitGMC G-Series 5.0L / 5.7L 1991, Exhaust Manifold Hardware Kit by Fel-Pro®. Set services one exhaust manifold. If you are looking for quality sealing solutions, Fel-Pro offers you various replacement products from seals and bolts to...Direct OEM replacement for a proper fitEnsures reliable sealing performance$40.38
- Dorman®Metal Exhaust Manifold Studs and Nuts KitGMC G-Series 4.3L / 5.0L / 5.7L 1991, Metal Exhaust Manifold Studs and Nuts Kit by Dorman®. Dorman’s Exhaust Manifold Hardware Kit provides you with the proper studs, bolts, and nuts for replacing your manifold. Save time and energy...Direct replacement for a proper fit every timeDurable steel construction$5.55 - $12.85
- Dorman®Brass Exhaust Manifold NutsBrass Exhaust Manifold Nuts by Dorman®. Dorman's Exhaust Nuts are now available separately for exhaust manifold repairs. These direct replacement nuts are ideal for securing exhaust components and used in conjunction with a mating bolt...Direct replacement for a proper fit every timeHigh-quality materials provides years of trouble-free service$4.76
- Victor Reinz®Exhaust Manifold Gasket SetGMC G-Series 1991, Exhaust Manifold Gasket Set by Victor Reinz®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your...High quality at an affordable priceExpertly made from premium materials$10.31 - $24.97
- Nickson®Exhaust Manifold InsulatorExhaust Manifold Insulator by Nickson®. Nickson was the first to introduce exhaust products to the aftermarket. This represented a substantial upgrade in the quality of products especially since they took both the Ford and GM OE designs...Expertly crafted from premium materialsQuality design and workmanship$6.02
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1991 GMC G-Series Models
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