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If you drive an Infiniti QX60, a failing exhaust manifold can hurt engine performance, increase cabin noise, and set off fault codes. Choosing the right exhaust manifold matters because fit, heat handling, and sealing determine durability and how well the engine runs. This guide shortlists the top options for the Infiniti QX60 based on fitment, thermal performance, and sealing reliability. It explains the criteria we used to pick these manifolds and what to watch for when replacing one.
Looking for other parts? See all Infiniti QX60 parts & accessories.
Top Picks at a Glance
| Best Reviewed A top-rated pick with lots of positive feedback | Dorman Exhaust Manifold Hardware Kit (03309) |  |
| Most Popular A crowd favorite that many people choose with confidence | JDMSPEED Exhaust Manifold with Gasket for Nissan Altima 2.5L (2007–2013) |  |
| Best Quality Built to a higher standard if you want something more solid | A-Premium Exhaust Manifold with Gasket, Studs, Nuts & Heat Shield for 4.2L V6 |  |
| Best Budget The cheapest option that still gets the job done reliably | Dorman Exhaust Manifold Hardware Kit (32111) |  |
| Most Sold A high-volume bestseller chosen again and again | Dorman Exhaust Manifold Kit (674-332) with Gaskets and Hardware |  |
| Best Value for Money The sweet spot between price and what you get | PartsFlow Left and Right Exhaust Manifold Pair with Heat Shields |  |
| Best Overall The best all-around choice for most situations | Dorman 674-522 Driver Side Exhaust Manifold Kit with Gaskets and Hardware |  |
1. Dorman Exhaust Manifold Hardware Kit (03309)
| Brand | Dorman |
|---|---|
| Model | Dorman 03309: Exhaust Manifold Hardware Kit |
| Exterior | Machined |
| OEM Part Number | 06509863AA; 6505316AA; 6507746AA; 6509544AA; 6509863AA; 6510140AA; 6510141AA |
This Dorman hardware kit supplies the replacement bolts and related fasteners needed when an exhaust manifold is being reinstalled on compatible engines. It is intended for use during manifold replacement or when original fasteners are corroded, broken, or missing. The kit mirrors factory-style hardware so installers can reuse a serviced or new manifold without hunting down individual bolts. Practical benefits include durable machined components and a full set of pieces that cover the common mounting points, which speeds repairs and reduces repeat trips to the parts store. The kit does not include manifold gaskets or the manifold itself, so you still need those parts for a complete repair. Also some users note the kit does not exactly match every factory recommendation for material choices on specific fasteners, so shops that insist on factory-specified stainless components may prefer sourcing those separately.
Best for: Reliability-focused owners who prioritize a dependable repair and want a ready-made hardware set to finish an exhaust manifold job quickly and avoid repeat visits to the parts counter.
Less Ideal for: Shoppers seeking a complete manifold repair package including gaskets and manifold or those who require only factory-specified material grades for every fastener should consider other options.
- Complete set of manifold fasteners to replace missing or broken hardware
- Machined components designed to match factory fit and thread engagement
- Speeds repairs by providing all common bolts and studs in one kit
- Positive long-term user reports of secure fitment and durability
- Does not include gaskets or the manifold itself
- Some fasteners may not match specific factory material recommendations
Verdict A convenient, reliability-minded fastener kit that makes manifold repairs faster but does not include gaskets or the manifold itself.
2. JDMSPEED Exhaust Manifold with Gasket for Nissan Altima 2.5L (2007–2013)
| Fitment | Nissan Altima L4 2.5L 2007–2013 |
|---|---|
| Includes | Exhaust manifold with gaskets and hardware |
| Construction | Cast iron or stainless tubular |
| CARB compliance | Non-CARB Compliant |
This exhaust manifold kit is sold as a direct replacement for the 2.5L four-cylinder Altima from 2007 through 2013 and ships with gaskets and mounting hardware. It installs in place of the factory manifold and is intended to restore a sealed exhaust path and stop leaks into the cabin or engine bay. Construction is cast iron or stainless tubular to resist warping and a quality inspection is claimed before shipping. In practice the kit often fits the block and ports correctly and the provided hardware can simplify installation for DIYers or quick shop repairs. Common issues reported by buyers include misaligned heat shield brackets and occasional fitment of the donut flange gasket, which may require minor trimming or adjustment. Several users also saw a P0420 check-engine code after installation on emissions-equipped vehicles, so this non-CARB-compliant part may trigger downstream sensor or catalytic efficiency alerts on some cars. Expect a budget-friendly replacement that can stop leaks but might need small modifications and attention to emissions codes on California-spec vehicles.
Best for: Convenience-driven buyers who want a ready-to-install, budget replacement to stop exhaust leaks quickly without sourcing separate gaskets or hardware.
Less Ideal for: Buyers who need California emissions compliance or who prefer guaranteed factory-quality fit and long-term catalytic efficiency should consider factory-quality or certified parts instead.
- Direct-fit replacement for the specified 2.5L Altima engines, simplifying installation
- Includes gaskets and hardware so fewer extra parts are needed
- Cast iron or stainless-style construction reduces risk of warping compared with low-grade metal
- Not CARB compliant and may cause a P0420 code on emissions-equipped vehicles
- Heat shield bracket locations can be off, sometimes requiring trimming or modification
- Some buyers reported imperfect gasket/donut flange sizing or inconsistent workmanship
Verdict A cost-effective, ready-to-install replacement for 2.5L Altima exhaust leaks, but not suitable for emissions-controlled applications where CARB compliance and long-term catalytic performance matter.
3. A-Premium Exhaust Manifold with Gasket, Studs, Nuts & Heat Shield for 4.2L V6
| Material | Cast Iron |
|---|---|
| Included Hardware | Gasket, 3 studs, 3 nuts, flange |
| Port Shape | Oval |
| Engine Fit | L6 4.2L |
This exhaust manifold is a cast-iron replacement designed to restore the exhaust path and reduce noise for 4.2L V6 engines. It ships with a gasket, three studs, three nuts and a flange so it can be installed as a direct replacement where the bolt pattern and ports match. In service it reduces exhaust leak noise and returns the vehicle to a sealed exhaust system when the original manifold has cracked or developed holes. The cast-iron construction is durable and helps absorb vibration but several user reports note uneven mating surfaces that can cause leaks unless the flange is surfaced or fitted carefully. The included hardware and heat shield simplify installation, but buyers planning a precision fit for high-performance tuning may need to machine the flange or use a high-quality aftermarket gasket to ensure a perfect seal. This is a practical replacement for restoring quiet operation, but expect possible fitment variation that can require additional work for a flawless seal.
Best for: Performance-oriented buyers who prioritize restoring exhaust integrity and noise control while keeping the factory flow characteristics for a 4.2L V6 application.
Less Ideal for: Buyers seeking a precision-performance manifold for custom tuning or guaranteed perfect fitment straight out of the box should consider premium machined aftermarket options instead.
- Complete kit includes manifold, gasket and mounting hardware for one-stop replacement.
- Cast-iron construction provides strength and vibration damping for long-term service.
- Heat shield is included to protect nearby components and reduce heat transfer.
- Fits vehicles using the 4.2L V6 flange and bolt pattern and restores a sealed exhaust path when matching
- Some units have uneven port mating surfaces that may require resurfacing to stop leaks.
- Fitment quality appears variable across samples which can add installation time or require machine work.
Verdict A practical cast-iron replacement that restores quiet operation for 4.2L V6 engines but may need flange resurfacing for perfect sealing.
4. Dorman Exhaust Manifold Hardware Kit (32111)
| Brand | Dorman |
|---|---|
| Model | 32111 |
| Manufacturer Part Number | 32111 |
| OEM Part Number | 14064JG30A; 14064ZX60A; 14094-JG30A; 140949BA0A |
This Dorman exhaust manifold hardware kit provides the studs, nuts, and related fasteners intended to replace missing or damaged manifold hardware on compatible Infiniti QX60 engines. It is used during manifold or catalytic converter repairs to restore proper clamping and sealing where original fasteners have corroded or broken. Notable points include replacement studs with cut threads for straightforward installation and a ready-to-paint exterior for corrosion protection. In practice the kit makes reinstalling a manifold quicker than sourcing individual parts and helps avoid custom machining. Quality reports are mixed: many buyers find the studs fit well and install easily with a torque wrench, but a minority report poor nut thread quality or incorrect thread pitches on some pieces, which can require chasing threads or swapping fasteners. Expect a budget-friendly, convenient fix for common hardware failures but verify thread pitch and inspect nuts before torqueing to avoid rework.
Best for: Budget-conscious owners seeking an affordable way to replace corroded or missing exhaust manifold fasteners on an Infiniti QX60 and finish a repair without sourcing individual parts.
Less Ideal for: Anyone who needs guaranteed factory-exact fasteners or who prefers pre-verified OEM-fit parts should consider purchasing factory-quality replacements or sourcing individual fasteners from a dealer.
- Includes studs and nuts to replace common corroded manifold fasteners so you can complete a repair without multiple trips to the parts store
- Stud threads are cut cleanly for easy engagement and allow use of a torque wrench for correct installation
- Ready-to-paint exterior provides basic corrosion protection and a neater appearance after installation
- Some customers report inconsistent nut thread quality that may require re-chasing or replacing the nuts
- Reports of mixed thread pitches on certain studs mean you must confirm compatibility with the QX60 before installation
Verdict A cost-effective hardware kit that simplifies manifold repairs on the Infiniti QX60 but inspect thread pitches and nut quality before final assembly.
5. Dorman Exhaust Manifold Kit (674-332) with Gaskets and Hardware
| Compatible vehicle | Infiniti QX60 (2014–2020) |
|---|---|
| Includes | Manifold plus gaskets and downpipe hardware |
| Exterior | Machined |
| Manufacturer | Dorman Products |
| OEM part reference | 101565; 14002-JA10B |
This Dorman manifold kit is a direct replacement designed to match the fit and function of the original exhaust manifold on specified vehicles, and it ships with the gaskets and downpipe hardware needed for a complete repair. Intended for use as a one-order repair solution, the machined manifold is reverse-engineered from factory parts to simplify installation and reduce the chance of fitment issues when matched to the correct trim. In practice this means fewer trips for missing pieces and a faster repair when replacing a cracked or leaking manifold on the Infiniti QX60. The manufacturer states the part is tested to meet emissions and durability standards and aims to resist warping and cracking. The main limitations are that compatibility must be verified for your exact trim and year before buying, and as with any aftermarket replacement some subtle differences from a factory part can exist that may matter to highly tuned engines or restorations.
Best for: A risk-averse mainstream buyer who wants a ready-to-install, reliable replacement that reduces repair uncertainty and avoids multiple orders.
Less Ideal for: Owners seeking exact factory-original parts for concours restorations or performance tuners wanting custom manifolds should consider other options.
- Includes all required gaskets and downpipe hardware for a complete repair
- Engineered to match factory fit and function to simplify installation
- Machined finish and construction intended to resist warping and cracking
- Requires confirming exact QX60 trim and year for proper fitment
- Aftermarket part may differ slightly from factory parts in finish or fit details
Verdict A practical, complete replacement manifold kit for Infiniti QX60 owners who want a straightforward, ready-to-install repair.
6. PartsFlow Left and Right Exhaust Manifold Pair with Heat Shields
| Manufacturer | PartsFlow |
|---|---|
| Material | Cast Iron |
| Includes | Left and Right manifolds with heat shields |
| OEM Part Numbers | 674-156, 674-157, 10045315, 14093658, 14102016 |
This PartsFlow kit supplies both left and right cast-iron exhaust manifolds with heat shields as a direct-style replacement for vehicles that match the listed fitment. Intended for installation where the factory manifolds are damaged, warped, or cracked, the set is typically used during an engine exhaust repair or rebuild and comes with the manufacturer part references to match replacements. The cast-iron construction provides familiar durability and heat resistance, while the included shields reduce heat transfer to nearby components. Buyers report straightforward bolt-on installation in matching applications, though a few users noted small cosmetic chipping and occasional fitment adjustments to the exhaust pipes. The product is from a quality-focused supplier and includes a stated one-year support warranty. Important limitations are that fitment must be confirmed for the specific vehicle and exhaust routing, and cast-iron manifolds can be heavier and take longer to warm than some aftermarket lightweight options.
Best for: Practical optimizers seeking a cost-effective, factory-style replacement that restores exhaust function without extra performance upgrades.
Less Ideal for: Drivers aiming for weight savings or high-performance exhaust tuning should consider lightweight or performance-specific manifolds instead.
- Sold as a matched left and right pair for complete replacement.
- Cast-iron construction offers proven durability and heat resistance.
- Includes heat shields to limit heat soak to surrounding components.
- Matches multiple manufacturer part numbers for easier identification and sourcing.
- Not guaranteed to drop into every vehicle without exhaust modifications or alignment work.
- Cast-iron design is heavier than some aftermarket alternatives.
- Some units show cosmetic chipping out of the box in a minority of reports.
Verdict A budget-friendly, factory-style matched manifold pair that restores exhaust routing reliably when fitment is confirmed.
7. Dorman 674-522 Driver Side Exhaust Manifold Kit with Gaskets and Hardware
| Material | Cast Iron |
|---|---|
| Includes | Manifold, manifold gasket, flange gasket, 3 studs, 3 nuts |
| Bolt Pattern | 6 holes |
| Manufacturer | Dorman Products |
This Dorman driver-side exhaust manifold kit replaces a factory unit with a ductile iron manifold plus the gaskets, studs, and nuts needed to install it. It is intended as a direct-fit replacement and is reverse-engineered from the original to simplify installation on compatible vehicles. In use it handles high heat and repeated thermal cycling better than lower-grade castings, and the included hardware reduces trips to the parts store during a repair. Real-world notes from installers show good machining and fit, though some users needed to check for coolant sensor clearance and may require minor trimming in tight engine bays. The kit provides a practical, lower-cost alternative to a factory part with the convenience of a one-box repair solution, but buyers who need perfect factory-match materials or who prefer a different flange gasket style may want to verify included parts before starting the job.
Best for: Balanced buyers who want a reliable, cost-effective factory-style repair for their Infiniti QX60 and appreciate a complete one-box solution that minimizes parts sourcing and downtime.
Less Ideal for: Shoppers demanding an exact factory-material match or those planning major performance upgrades should look at specialty or OEM-specified alternatives instead.
- Ductile iron construction resists warping and cracking under heat better than lower-grade castings.
- Includes manifold gasket, flange gasket, studs and nuts so you can complete the repair with one kit.
- Reverse-engineered direct-fit design simplifies installation compared with generic aftermarket manifolds.
- Machined exterior and visible quality control produce a close-to-factory fit and finish.
- May interfere with nearby sensors or connectors in some engine bays and require minor trimming or adjustment.
- Included ring gasket can arrive bent from shipping on rare occasions.
- Not guaranteed to match every factory gasket style or material preference for all repair strategies.
Verdict A durable, budget-friendly direct-fit manifold kit that provides a ready-to-install repair for the Infiniti QX60 driver side while saving time sourcing parts.
Choosing the Right Infiniti QX60 Exhaust Manifold: Key Factors to Consider
Fitment and Flange Accuracy
Correct fitment is critical because an exhaust manifold must match the Infiniti QX60 cylinder head flange and bolt pattern precisely. Even small misalignments can lead to leaks, stressed bolts, and warped flanges over time.
Flange accuracy affects how well the manifold seals against the head and how evenly load is distributed across the gasket. Check whether the manifold specifies OEM-equivalent flange dimensions and bolt spacing to reduce the chance of post-installation adjustments or machining.
Material and Thermal Resistance
Materials determine how the manifold handles repeated heat cycles. Cast iron offers good resistance to cracking from heat stress, while certain stainless steels resist corrosion and can be thinner but still strong. The Infiniti QX60 application experiences high exhaust temperatures, so choose materials rated for thermal cycling.
Thermal resistance also influences heat soak into nearby components. A manifold with better heat management reduces the risk of premature gasket failure and protects adjacent sensors and wiring.
Gasket Interface and Sealing Design
A reliable sealing surface and proper gasket selection are essential to prevent exhaust manifold leak symptoms such as ticking noises, poor idle, or reduced performance. Designs that include flat, machined flanges or integrated gasket rails usually seal more consistently.
Consider whether the manifold requires a specific type of gasket and whether the gasket design accommodates thermal expansion. Proper sealing reduces exhaust leakage that can affect oxygen sensor readings and engine control behavior.
Strength and Resistance to Cracking
Exhaust manifold crack prevention depends on material thickness, reinforcement at stress points, and how the part dissipates heat. Cracks often start at areas with sharp transitions or thin sections, so manifolds with smooth, reinforced transitions are preferable.
Regular thermal cycling and rapid temperature changes heighten crack risk. A robust design minimizes stress concentrations and extends service life in the Infiniti QX60 application.
Installation Complexity and Hardware
Installation difficulty affects labor time and the likelihood of correct torquing and sealing. Manifolds that include correct-length studs, bolts, and high-quality gaskets reduce installation headaches and the chance of fastener failures.
Consider access to bolts on the Infiniti QX60 engine, whether manifold removal requires ancillary part removal, and if any special tools or anti-seize practices are recommended. Easier installations reduce the chance of improper assembly that can cause leaks.
Corrosion Resistance and Long-Term Durability
Exposure to road salt, moisture, and combustion byproducts can corrode manifolds over time. Corrosion-resistant finishes or stainless materials help maintain sealing surfaces and bolt threads, reducing the likelihood of future exhaust manifold replacement.
Durability also ties to warranty and manufacturing quality. Choose manifolds built to withstand environmental exposure and that use coatings or materials suited to local climate conditions.
FAQ
What are common exhaust manifold symptoms on an Infiniti QX60?
Common symptoms often include a ticking or tapping noise from the engine bay, decreased engine smoothness at idle, and occasional exhaust odor in the cabin. You may also see reduced fuel economy or trigger a check-engine indicator due to altered sensor readings.
How can I diagnose an exhaust manifold leak?
Diagnosis usually starts with a visual inspection for soot marks or cracks at the flange and along the manifold. A running test can reveal ticking noises tied to exhaust pulses, and a hand-held smoke test or a focused pressure check can help locate leaks. Use care around hot components and consider professional help if access is limited.
When should I replace the exhaust manifold gasket versus the whole manifold?
If the flange is flat and free of cracks, replacing the gasket may resolve leaks caused by failed seals. However, if there is flange warping, visible cracking, or damaged bolt bosses, replacing the entire manifold is usually the longer-lasting solution. Evaluate the condition of both the gasket surface and the manifold material.
What causes an exhaust manifold crack?
Cracks commonly result from thermal cycling, stress concentrations at transitions or bolt holes, and corrosion that weakens the metal over time. Rapid temperature changes, such as driving hard immediately after cold starts, can exacerbate stresses that lead to cracking.
How much does exhaust manifold installation typically add to cost estimates?
Installation complexity depends on bolt access, required ancillary removals, and whether studs or bolts are seized. Labor time can vary widely, and more complex installs that require removing intake or other components usually increase labor compared with straightforward bolt-on replacements. Expect varying labor depending on local shop practices.
Is it okay to swap exhaust manifold parts between used manifolds?
Swapping parts can be acceptable if the donor manifold has confirmed flange flatness, no cracks, and matching bolt hardware. However, mixing components risks fitment and sealing issues if dimensions or wear differ. When in doubt, use matched hardware and inspect surfaces carefully before installation.
How We Chose the Best Infiniti QX60 Exhaust Manifold
We focused on parts that offer correct fitment for the Infiniti QX60, reliable sealing at the cylinder head, and robust thermal performance under typical driving conditions. Our evaluation prioritized flange accuracy, thermal expansion resistance, and the quality of gasket interfaces because those aspects most directly affect leaks and fitment. Corrosion resistance and material thickness were considered to predict long-term durability in varied climates. We also reviewed ease of installation, including bolt access and required ancillary parts, since installation complexity influences total labor time. Finally, we considered manufacturer quality control indicators such as material traceability and reinforcement at stress points. We excluded poorly documented components, parts with unclear fitment for the Infiniti QX60, and items lacking basic sealing hardware. Items that did not meet minimum standards for flange flatness or that used undersized bolt holes were removed from consideration.
Our full evaluation process is outlined in our review methodology.
Conclusion
Prioritize correct fitment, flange quality, and a gasket-friendly sealing surface when choosing an Infiniti QX60 exhaust manifold. Balance material choice and thermal resistance against installation complexity and long-term corrosion resistance. Accept some tradeoffs between ease of installation and maximal durability. Focus on parts that address the specific symptoms you see, such as leaks or cracks, and pick options that make future servicing straightforward.
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