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If your GMC Yukon is showing reduced performance, louder engine noise, or a check-engine warning, choosing the right exhaust manifold matters. The correct manifold restores exhaust flow, controls noise, and helps maintain engine efficiency and emissions. This guide covers the top shortlisted options for the GMC Yukon and explains the practical reasons each type made the list. We evaluated fitment, thermal resistance, and gasket sealing to surface the best choices for common repair and upgrade needs. Read on to see the picks and the criteria used to evaluate them.
Looking for other parts? See all GMC Yukon parts & accessories.
Top Picks at a Glance
| Best Reviewed A top-rated pick with lots of positive feedback | A-Premium Exhaust Manifold Kit with Gaskets and Hardware |  |
| Most Popular A crowd favorite that many people choose with confidence | PartsFlow Left and Right Exhaust Manifold Pair with Heat Shields |  |
| Best Quality Built to a higher standard if you want something more solid | Dorman 674-470 Driver Side Exhaust Manifold Kit with Gaskets and Hardware |  |
| Best Budget The cheapest option that still gets the job done reliably | PartsFlow Left Exhaust Manifold with Gasket and Hardware for 5.0L/5.7L V8 |  |
| Most Sold A high-volume bestseller chosen again and again | TRQ Exhaust Manifold Pair (Driver & Passenger) — Direct-Fit Replacement |  |
| Best Value for Money The sweet spot between price and what you get | AngyMeck Exhaust Manifold Pair with Gaskets for 1988–1995 GMC Yukon/C1500–C3500 K1500–K3500 |  |
| Best Overall The best all-around choice for most situations | Dorman 674-522 Driver Side Exhaust Manifold Kit (includes gaskets and hardware) |  |
1. A-Premium Exhaust Manifold Kit with Gaskets and Hardware
| Fitment engine | 2.4L L4 (specified models) |
|---|---|
| Includes | Manifold, manifold gasket, flange gasket, 3 bolts, 3 nuts |
| Manufacturer part number | APEMD116 |
| OEM reference numbers | 674-940, 12609823 |
This A-Premium manifold kit is a factory-replacement style exhaust manifold intended to restore proper exhaust routing and quiet a leaking or cracked manifold on compatible 2.4L engines. It ships with the manifold, a manifold gasket, a flange gasket and matching bolts and nuts so you have the basic hardware needed for installation. In use the casting matches reported OEM fit and allows the heat shield to fit without modification, which simplifies installation for a home mechanic or technician. The metal construction is described to resist heat and corrosion and customer feedback shows consistent fit and sealing when replacing a failed original. Limitations to consider are that aftermarket castings sometimes have small surface blemishes from the mold and long-term durability will depend on engine application and driving conditions; some buyers still report concern about cracking on the 2.4L Ecotec family over very high mileage. For someone replacing a noisy or leaking manifold, this kit provides the parts needed to get the job done cleanly and quickly.
Best for: Reliability-focused buyers who prioritize restoring a quiet, correctly sealing exhaust system without unnecessary upgrades and want a straightforward replacement they can fit expediently.
Less Ideal for: Drivers seeking a heavy-duty performance upgrade or a long-lifespan OEM-verified part for severe-duty use should consider higher-end or dealer-sourced options instead.
- Direct-fit replacement designed for the 2.4L application noted, matching OEM mounting points and heatshield fit
- Includes gaskets and necessary bolts and nuts so no separate hardware purchase is required
- Cast metal construction intended to resist heat, warping and corrosion
- Frequently reported correct fit and improved cabin quietness after replacement
- Aftermarket casting can show small dings or blemishes not present on factory castings
- Long-term resistance to cracking on high-mileage 2.4L engines is uncertain compared with original factory parts
Verdict A ready-to-install, reliability-minded replacement manifold kit that restores fit and sealing for the specified 2.4L application but is an aftermarket option with variable long-term durability.
2. PartsFlow Left and Right Exhaust Manifold Pair with Heat Shields
| Material | Cast Iron |
|---|---|
| Placement on Vehicle | Left, Right, Front |
| Replacement OEM Number | 674-156, 674-157, 10045315, 14093658, 14102016 |
These PartsFlow exhaust manifolds replace the left and right cast-iron manifolds and include heat shields for installation on compatible GMC Yukon model years covered by the listing. They are used to route exhaust gases from the cylinder heads into the exhaust system while shielding nearby components from heat. The pair is a full-coverage replacement that lists several OEM part numbers, so it is intended as a direct factory-quality swap where bolt patterns and ports match. Buyers will appreciate that the manifolds come with heat shields and arrive as a matched left/right set, which simplifies a one-time repair and reduces fitment guesswork. Some customers report good fit and solid build, while a few note surface chips, missing hardware, or minor fitment adjustments may be required during installation. Expect to verify flange alignment and be prepared to reuse or source exhaust hardware and gaskets if not included. These are practical replacements for restoring a stock exhaust path without major modification, but they are not a performance upgrade and may need minor tweaking for perfect fit on older or modified vehicles.
Best for: A convenience-driven buyer who wants a straightforward, matched replacement to restore a factory-style exhaust system quickly and avoid sourcing individual components.
Less Ideal for: Not a good choice for owners seeking performance gains, custom headers, or a polished cosmetic upgrade, nor for projects where all-new exhaust hardware and modifications are planned.
- Sold as a matched left and right pair to simplify a full manifold replacement
- Includes heat shields to protect surrounding components from exhaust heat
- Cast iron construction matches factory-style durability for long-term use
- Lists multiple OEM part numbers to help confirm compatibility with factory systems
- May arrive with surface chips or cosmetic imperfections on some units
- Some buyers reported missing installation hardware requiring separate purchase
- Not intended to increase performance or improve flow compared with factory manifolds
Verdict A practical matched left/right factory-style replacement with heat shields that gets a Yukon back to stock operation, but expect possible minor fitment or hardware follow-up.
3. Dorman 674-470 Driver Side Exhaust Manifold Kit with Gaskets and Hardware
| Automotive Fit Type | Vehicle Specific Fit |
|---|---|
| Manufacturer | Dorman Products |
| OEM Part Number | 12557359 |
| Manufacturer Part Number | 674-470 |
This Dorman driver-side exhaust manifold is a direct replacement designed to match factory fit and function and arrives with all gaskets and downpipe hardware needed for a single-order repair. It is typically used to replace a cracked, warped, or leaking manifold on compatible GMC Yukon engines where the factory manifold has failed. The manifold is manufactured to resist common failure modes such as warping and cracking, and Dorman states the part is reverse-engineered from factory designs to simplify installation. Including the necessary hardware saves trips to parts stores and reduces installation time. Practical benefits include a simpler repair process and a solution that aims to meet emissions requirements in states that require compliant parts. Limitations are that fitment must be confirmed for your specific Yukon year and engine combination, and this is an aftermarket replacement so there may be subtle differences from factory parts in appearance and finish that do not affect function.
Best for: Performance-oriented GMC Yukon owners who prioritize restoring exhaust flow and reliability quickly while keeping installation time and parts sourcing to a minimum.
Less Ideal for: Buyers seeking an exact factory-produced part for cosmetic matching or those who prefer dealer-sourced components for warranty continuity should consider alternative options.
- Complete kit includes gaskets and downpipe hardware for a one-stop repair
- Engineered to match factory fit and function for straightforward installation
- Durable construction intended to resist warping and cracking
- Designed to meet emissions requirements in jurisdictions that require compliant parts
- Compatibility varies by model year and engine so you must verify fit for your Yukon
- Aftermarket finish and appearance may differ from factory manifolds
Verdict A ready-to-install aftermarket replacement that streamlines a GMC Yukon exhaust manifold repair with included gaskets and hardware, provided you confirm year and engine fitment.
4. PartsFlow Left Exhaust Manifold with Gasket and Hardware for 5.0L/5.7L V8
| Placement on Vehicle | Left, Front |
|---|---|
| Material | Cast Iron |
| Engine Fitment | 5.0L and 5.7L V8 GAS OHV |
| Package Includes | Manifold, manifold gasket, flange gasket, studs, nuts, springs, washers |
This PartsFlow left exhaust manifold is a direct-replacement cast-iron unit sold with gaskets and mounting hardware to restore the exhaust flow on 5.0L and 5.7L V8 engines used in GMC Yukon and similar Chevrolet/GMC trucks from 1988–1995. It arrives as a kit that includes the manifold, manifold and flange gaskets, studs, nuts, springs, and washers so you can swap it in without hunting down extra parts. Cast-iron construction is durable and resists warping compared with thin stamped alternatives, and the included hardware simplifies installation for a DIY mechanic or a small shop. Expect a factory-style fit and sealing when the manifold is matched to the specified engines, though installation on older vehicles may still require cleaning or minor fitting of mating surfaces. This is a basic replacement designed for reliability and cost savings rather than performance gains, so buyers looking to upgrade flow or reduce weight should consider aftermarket performance headers instead.
Best for: Budget-conscious owners focused on restoring factory reliability and getting their GMC Yukon back on the road without sourcing extra parts or paying for labor-intensive upgrades.
Less Ideal for: Drivers seeking increased exhaust flow, reduced weight, or a performance-oriented upgrade should look at aftermarket headers or tuned systems instead.
- Complete kit includes manifold, gaskets and mounting hardware for one-stop installation
- Cast-iron construction provides durability and resistance to heat-related distortion
- Direct-replacement fitment for specified 5.0L/5.7L V8 GMC/Chevrolet applications reduces modification time
- Includes heat shield and port-matched flange to simplify sealing and alignment
- Designed as a budget factory-style replacement so it does not improve flow or reduce weight compared with performance headers
- Fitment limited to older 1988–1995 engine and chassis configurations and not suitable for modern engines
Verdict A no-frills, cast-iron replacement manifold kit that restores factory-style exhaust function on 5.0L/5.7L GMC Yukon engines at a budget-friendly price.
5. TRQ Exhaust Manifold Pair (Driver & Passenger) — Direct-Fit Replacement
| Quantity | 2 Piece Set |
|---|---|
| Manufacturer | TRQ |
| Model | TRQ EXA51595 |
| Exterior | Machined |
This TRQ kit supplies both left and right exhaust manifolds intended as direct-fit replacements for older Chevrolet and GMC V8 trucks and SUVs. Typical use is to replace cracked or leaking factory manifolds during repair or engine rebuild, and the pair comes machined and prefinished to simplify installation. For a GMC Yukon that matches the listed fitment years and 5.7L V8, the manifolds restore exhaust routing and sealing to factory-style operation and help clear exhaust leaks that can affect idle quality and engine bay fumes. The product emphasizes direct-fit compatibility and includes reference part numbers to cross-check with your vehicle. Practical benefits include getting both sides at once and TRQ's DIY video resources to guide installation. Limitations are that fitment must be confirmed for a 1992–1995 Yukon with the 5.7L V8, and this aftermarket unit may differ slightly in casting or surface finish from factory parts which can affect heat shielding or accessory clearance in some setups.
Best for: Risk-averse mainstream buyers who prioritize a straightforward, factory-style replacement and want guidance during installation to avoid diagnosis or fitment surprises.
Less Ideal for: Shoppers seeking performance upgrades or bespoke high-flow headers should look elsewhere since this kit is intended as a factory-style replacement rather than a performance manifold.
- Includes both driver and passenger manifolds so both sides are replaced together
- Machined exterior and direct-fit design aimed at straightforward installation
- Reference part numbers provided for cross-checking compatibility
- Access to TRQ DIY videos to assist with installation and reduce guesswork
- Compatibility limited to specific model years and the 5.7L V8 so verification is required
- Surface finish or casting details may differ from factory manifolds which can affect heat shielding or fit in tight engine bays
Verdict A practical, direct-fit pair of replacement manifolds for the correct-year 5.7L Yukon that simplifies repair work but is not a performance upgrade.
6. AngyMeck Exhaust Manifold Pair with Gaskets for 1988–1995 GMC Yukon/C1500–C3500 K1500–K3500
| Compatibility | GMC Yukon and C/K trucks 1988–1995 |
|---|---|
| Material | Cast Iron |
| Package includes | Left and right manifolds, manifold gasket, flange gasket, studs, nuts, springs |
| Manufacturer | AngyMeck |
These cast-iron exhaust manifolds replace the factory manifolds on 1988–1995 GMC Yukon (and the corresponding C/K platforms) and come as a left and right pair with gaskets, studs, nuts and springs. They are intended for a direct replacement to restore exhaust sealing and eliminate leaks from cracked or warped original manifolds. Typical use is a bolt-on swap during an engine service or while repairing exhaust leaks; the included gaskets and hardware simplify installation compared with buying parts separately. Reviewers report good fitment to the cylinder heads and acceptable surface flatness after minor lapping in some cases. Because these are cast iron reproductions manufactured aftermarket, you should expect typical budget-part variability such as a small amount of machining, occasional trimming or enlarging of ports like the EGR nipple, and the need to source any missing manifold-to-intake boots or longer bolts if your original hardware is corroded. For a practical optimizer wanting to repair mileage-era Yukons without overspending, these manifolds deliver factory-like function at a value price, but installers should verify fit and be prepared for light fitment work on older engines.
Best for: A practical optimizer looking to restore exhaust sealing on an older GMC Yukon without paying for OEM parts, valuing a complete hardware package and reasonable durability.
Less Ideal for: Do not choose this if you need concours‑level factory originality or a performance header; enthusiasts seeking exact factory provenance or higher-flow exhaust parts should look elsewhere.
- Sold as a full left and right pair with gaskets and mounting hardware for a complete replacement
- Cast iron construction matches factory material for durability and heat resistance
- Multiple buyers report good fitment to 1988–1995 GM heads after minimal prep
- Includes flange gaskets and studs which reduces extra parts needed at install
- Aftermarket castings can require minor port or hole sizing and light surface lapping for a perfect seal
- Manifold boots and some engine-specific bolts are not included and may need to be purchased separately
- Possible variability in finish and fit common to budget replacement castings
Verdict A budget-friendly cast-iron pair that restores exhaust sealing on 1988–1995 GMC Yukon models with most installation hardware included, though light fitment work may be required.
7. Dorman 674-522 Driver Side Exhaust Manifold Kit (includes gaskets and hardware)
| Material | Cast Iron |
|---|---|
| Bolt Pattern (Number of Holes) | 6 |
| Manufacturer | Dorman Products |
| Includes | Manifold, manifold gasket, flange gasket, 3 studs, 3 nuts |
This Dorman 674-522 kit replaces a driver-side exhaust manifold with a factory-style ductile iron unit and includes the manifold gasket, flange gasket, three studs and three nuts so you have the parts needed for a one-stop repair. It is reverse-engineered from the factory piece for direct fitment and the cast iron construction is intended to resist the warping and cracking that affects some original manifolds. In real-world use the kit simplifies a DIY or shop replacement because the necessary hardware is in the box and machining around the flanges produces good sealing surfaces. Several users report that the casting fits like a factory part, though there are isolated reports of clearance interference with temperature sensor plastic fittings that may require minor trimming. The included ring gasket can arrive bent in some shipments so verify gasket condition before installation and keep a factory-style multi-layer head gasket on hand for best long-term sealing. For a balanced buyer wanting a durable, near-factory replacement, this is a practical choice for GMC Yukon repairs with a few minor installation caveats.
Best for: A balanced all-round buyer who wants a durable, near-factory replacement that minimizes additional parts orders and supports practical DIY or shop repairs on a GMC Yukon.
Less Ideal for: Not the best choice for someone seeking a performance exhaust upgrade or a custom manifold; performance-focused owners should consider dedicated performance headers or specialty options instead.
- Ductile cast iron construction designed to resist warping and cracking compared with lower-grade replacements
- Supplied as a complete kit with manifold gasket, flange gasket and hardware for a single-order repair
- Reverse-engineered for direct, near-factory fit to simplify installation
- Machined exterior surfaces improve sealing and reduce finish work during install
- May require minor trimming or clearance work around nearby plastic sensor connectors on some GMC Yukon configurations
- Some shipments have arrived with a bent ring gasket so inspect gaskets before installation
Verdict A durable, direct-fit cast-iron manifold kit that provides a ready-to-install, near-factory repair for GMC Yukon driver-side exhaust issues.
Choosing the Right GMC Yukon Exhaust Manifold: Key Factors to Consider
Fitment and Bolt Pattern
Proper fitment is the single most important factor because the manifold must match the engine's flange and bolt pattern exactly. Even small deviations can cause leaks, require modification, or prevent installation entirely. Verify manifest fitment information and look for manifolds designed specifically for the GMC Yukon engine variant you have. A precise match reduces the risk of exhaust leaks at the connection and avoids stress on studs and bolts. It also minimizes the chance of needing machine work or additional hardware during installation, which saves time and reduces labor complexity.
Material and Heat Resistance
Exhaust manifolds endure high temperatures and thermal cycling, so material selection affects longevity and performance. Cast iron is common for stock durability and good heat tolerance, while stainless steel can offer improved corrosion resistance and lighter weight. For high-heat or turbo applications, higher-grade alloys resist warping and cracking better under stress. Consider how the chosen material handles expansion, corrosion, and long-term exposure to exhaust gases. Better heat resistance helps maintain sealing surfaces and reduces the likelihood of gasket failure over time.
Gasket Sealing and Flange Flatness
A good seal between the manifold and the head prevents exhaust leaks that can cause noise, reduced backpressure control, and potential engine management faults. Flange flatness and surface finish influence how well a gasket can seal the mating surfaces. Warped or uneven flanges are common causes of persistent leaks. Select manifolds that either include high-quality gaskets or specify compatible gasket types. If flange machining or alignment features are included, they can simplify achieving a reliable seal during installation.
Structural Integrity and Crack Resistance
Cracks in a manifold lead to exhaust leaks and can propagate under thermal cycles, causing repeated failures. Look for manifolds with robust casting or welding practices, reinforced junctions at stress points, and designs that distribute heat loads evenly. Smooth transitions and consistent wall thickness reduce hotspots where cracks typically form. Manufacturing quality, such as uniform cooling and post-process stress relief, also affects long-term resistance to cracking. For high-mileage vehicles, prioritize components built to withstand repeated heating and cooling without compromising strength.
Ease of Installation and Serviceability
Installation complexity affects labor time and the likelihood of errors. Consider manifolds that provide easy access to mounting bolts, use standard fasteners, and come with clear instructions or hardware kits. Features like pre-threaded studs or captive nuts can simplify fitment and reduce time spent aligning components. Serviceability also includes availability of replacement gaskets and the ability to remove the manifold without extensive disassembly of surrounding components. A design that minimizes interference with heat shields, wiring, and accessories saves time during both replacement and future maintenance.
Corrosion Resistance and Finishing
Exposure to moisture, road salts, and exhaust condensate accelerates corrosion, which can shorten the life of a manifold. Corrosion-resistant finishes, coatings, or inherently resistant materials like stainless steel improve longevity. Protective coatings also reduce surface oxidation that can compromise mounting surfaces and sealing areas. Consider how the finish will hold up in your typical driving environment. For vehicles in regions with heavy road salt or high humidity, enhanced corrosion protection becomes a more important selection factor.
FAQ
What are common symptoms of a failing exhaust manifold on a GMC Yukon?
Common signs include louder engine noise, a ticking or tapping sound during cold starts, and a noticeable decrease in engine smoothness. You may also see a check-engine light triggered by changes in exhaust backpressure or oxygen sensor readings. Visual signs can include soot or black staining near the manifold-to-head joint.
How do I diagnose an exhaust manifold leak?
A simple diagnosis often starts with a visual inspection for soot, cracks, or loose fasteners. Listening for a ticking noise that varies with engine RPM can help pinpoint a leak. A smoke or soapy-water test can reveal escaping gases at the flange. For more certainty, a professional can use a combustion gas detector or pressure test to confirm the leak location.
When should I replace the exhaust manifold gasket versus the whole manifold?
If the manifold flange is flat and free of cracks or warping, replacing the gasket can restore a proper seal. However, if the flange is damaged, the manifold has visible cracks, or warping is present, replacing the entire manifold is usually the more reliable option. Inspect the mating surfaces carefully during gasket replacement to avoid repeat failures.
Can a cracked exhaust manifold be repaired?
Small cracks in some materials can sometimes be repaired through welding or brazing, but success depends on the material type and crack location. Repairs can be temporary if the underlying cause, like thermal stress or corrosion, is not addressed. For long-term reliability, replacement is often preferred when cracks are significant or located in high-stress areas.
How much does it typically take to swap an exhaust manifold on a GMC Yukon?
Labor time varies with engine layout and accessibility, and it often depends on whether surrounding components must be removed. Expect the job to take several hours on many vehicles. Additional time may be needed for replacing gaskets, studs, or related components. Getting a local labor estimate will provide the most accurate expectation for your situation.
What should I consider when choosing between OEM and aftermarket manifolds?
OEM parts are typically designed to match original fit and durability expectations, while aftermarket options can offer different materials or easier installation features. Evaluate material quality, fitment specifics, and whether the part includes necessary gaskets or hardware. Choose based on the balance you want between factory-style reliability and potential aftermarket improvements in durability or access.
How We Chose the Best GMC Yukon Exhaust Manifold
We prioritized parts that deliver reliable fitment and thermal durability for the GMC Yukon. Primary evaluation criteria included flange fit and bolt pattern accuracy to ensure direct compatibility with the engine, material and heat-resistance ratings to handle exhaust temperatures, gasket sealing performance and flange flatness to reduce leak risk, and overall structural integrity to resist warping or cracking under thermal cycling. We also considered manufacturing quality like welded vs cast joints, and serviceability aspects such as ease of access for installation and availability of replacement gaskets. Exclusions were products that lacked clear vehicle-specific fitment data, components intended only for racing or heavily modified engines, and items with insufficient material specifications. The list reflects components suitable for stock and commonly upgraded Yukon engines, emphasizing parts that are practical for routine replacement and long-term reliability.
Our full evaluation process is outlined in our review methodology.
Conclusion
Prioritize fitment accuracy, material durability, and gasket sealing when choosing an exhaust manifold for a GMC Yukon. Those factors most directly affect noise, engine efficiency, and the risk of recurring leaks. Balance ease of installation and corrosion resistance against long-term structural integrity. Addressing the root cause of past failures, such as warped flanges or repeated thermal stress, will help you select a component that lasts and reduces the need for repeated repairs.
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