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If your Infiniti FX35 is showing signs of oil seepage around the top of the engine, choosing the right valve cover gasket matters for cleanliness and reliable operation. The wrong gasket or a poor installation can allow oil to leak onto ignition components or drip to lower engine parts, creating mess and potential performance issues. This guide presents the shortlisted top valve cover gaskets for the Infiniti FX35, chosen for their material quality, sealing performance, and durability. We evaluated ease of installation, gasket materials, and resistance to oil and heat to help you pick the best option. Read on to see the criteria that mattered and what to expect during replacement.
Looking for other parts? See all Infiniti FX35 parts & accessories.
Top Picks at a Glance
| Best Reviewed A top-rated pick with lots of positive feedback | Fel-Pro VS 50696 R Valve Cover Gasket Set |  |
| Most Popular A crowd favorite that many people choose with confidence | MITZONE Valve Cover Set with Gaskets, Bolts, Oil Cap, PCV and Spark Plug Tube Seals for VQ35DE 3.5L |  |
| Best Quality Built to a higher standard if you want something more solid | A-Premium Engine Valve Cover Kit with Gasket, Bolts and Oil Cap for Nissan/Infiniti VQ35DE 3.5L |  |
| Best Budget The cheapest option that still gets the job done reliably | Quaneguzy Valve Cover Gasket Kit for Infiniti G37/Q40/Q50/Q60/QX50/QX70/M37 |  |
| Most Sold A high-volume bestseller chosen again and again | Sorello Valve Cover Gasket Set for Infiniti FX35 3.6L V6 |  |
| Best Value for Money The sweet spot between price and what you get | A-Premium Right Side Engine Valve Cover with Gasket for Infiniti/Nissan VQ35DE |  |
| Best Overall The best all-around choice for most situations | Fel-Pro VS50900R Valve Cover Gasket Set for INFINITI |  |
1. Fel-Pro VS 50696 R Valve Cover Gasket Set
| Brand | Fel-Pro |
|---|---|
| Material | Rubber |
| Model | VS 50696 R |
| Manufacturer Part Number | VS50696R |
This Fel-Pro valve cover gasket set is built to replace leaking valve cover seals on an Infiniti FX35 and restore reliable oil containment. The kit includes the main rubber gasket formulation and supplementary pieces typically required for a complete valve cover service, so you can replace the full seal without hunting parts. Fel-Pro’s cork-rubber style is engineered to conform to imperfect sealing surfaces, which helps when the cylinder head or cover has light warpage or wear. In practice it installs like a standard replacement gasket and many users report straightforward fit and improved sealing without needing additional sealant. Limitations are minor: the gasket may arrive folded and can need a few minutes of shaping before installation, and this is a direct replacement rather than an upgraded high-performance material for extreme heat or racing use. For routine maintenance or repair on an FX35 this set restores factory-style sealing and keeps oil where it belongs.
Best for: Reliability-minded Infiniti FX35 owners who prefer a proven, brand-name replacement that restores factory sealing and minimizes the chance of repeat leaks.
Less Ideal for: Drivers seeking a motorsport or extreme-heat upgrade should consider performance-specific aftermarket gaskets instead.
- Designed to match factory sealing geometry for a direct replacement fit on the FX35.
- Cork-rubber formulation is highly conformable to imperfect sealing surfaces, improving leak resistance.
- Includes additional gaskets and pieces needed for a full valve cover service, reducing trips to the parts store.
- Not marketed as an upgraded high-temperature or competition material.
- May arrive folded in packaging and require reshaping before installation.
Verdict A dependable, factory-quality replacement gasket set that restores reliable sealing on the Infiniti FX35 without extra frills.
2. MITZONE Valve Cover Set with Gaskets, Bolts, Oil Cap, PCV and Spark Plug Tube Seals for VQ35DE 3.5L
| Compatible Engine | VQ35DE 3.5L |
|---|---|
| Fitment Years | 2003–2008 models listed |
| Package Contents | Driver & passenger covers, gaskets, bolts, oil cap, spark plug tube seals, PCV, hose |
This MITZONE valve cover set is a full replacement package for Nissan/Infiniti VQ35DE 3.5L engines, supplied with both driver and passenger covers plus preinstalled gaskets, spark plug tube seals, PCV valve, bolts and an oil filler cap. It is meant for direct-fit installation on 2003–2008 350Z, G35, FX35 and M35 applications and is typically used to stop oil leaks, refresh a tired engine top end or dress up the engine bay. The preinstalled gaskets and tube seals speed installation and reduce fiddly prep work, and reviewers report good sealing when care is taken during fitment. Expect painted finishes that look good but can be scratched in tight engine bays and a mixed history on bolt quality and occasional fitment or casting issues, so inspect parts before install. For a convenience-driven buyer this kit saves time by bundling needed pieces, but hands-on installers should verify bolt threads and clean casting debris prior to assembly to avoid problems.
Best for: Convenience-oriented owners who want a bundled, ready-to-install valve cover replacement that minimizes parts-sourcing and speeds a repair or refresh.
Less Ideal for: Buyers seeking a pristine show-quality finish or a guaranteed factory-grade part should consider higher-end OEM or professional aftermarket options and separate premium hardware.
- Complete kit includes both valve covers plus gaskets, spark plug tube seals, PCV valve, oil cap and bolts for a single purchase replacement
- Gaskets and tube seals come preinstalled to simplify installation and reduce prep time
- Designed to fit VQ35DE 3.5L engines for direct replacement on specified Nissan and Infiniti models
- Multiple buyers report good sealing performance and elimination of oil leaks when installed correctly
- Some units show inconsistent casting quality, overspray or internal debris requiring cleaning before installation
- Included bolts and hardware have mixed quality reports and some installers prefer to reuse factory bolts
- Painted finish can be thin and is prone to scratching during installation in tight engine bays
Verdict A time-saving, all-in-one valve cover replacement for VQ35DE engines that works well if you inspect hardware and accept variable finish and casting quality.
3. A-Premium Engine Valve Cover Kit with Gasket, Bolts and Oil Cap for Nissan/Infiniti VQ35DE 3.5L
| Fitment Engine | V6 3.5L VQ35DE |
|---|---|
| Compatible Models | Infiniti FX35, G35, M35; Nissan 350Z (specific years listed) |
This kit supplies two replacement valve cover assemblies plus gaskets, spark plug seals, hardware and an oil filler cap to address common VQ35DE issues like oil seepage, burning-oil smell and engine bay smoke. It is installed in the engine bay to reseal the valve covers and restore proper sealing around ignition coil openings and the cover flange. Notable features include both left and right bank covers, included gaskets and a full bolt set with torque steps provided, which simplifies a full-cover replacement or professional repair. In practice the kit can stop leaks and eliminate oil contamination of ignition coils when fitted and torqued correctly, and reviewers report good fit and alignment with factory connections. Limitations are typical for aftermarket covers: material feel is reported as plastic-like compared with factory metal covers and some installers recommend RTV to hold gaskets during assembly, so careful installation and proper torqueing are important for a long-lasting seal.
Best for: Performance-oriented buyers who want to restore a VQ35DE engine that is leaking or smoking and prioritize getting the engine sealing back to a reliable state for spirited driving.
Less Ideal for: Buyers seeking a direct metal factory-style cover for show or maximum longevity should consider higher-end OEM-style replacements or upgraded aftermarket metal covers instead.
- Complete kit includes both left and right valve covers plus gaskets, spark plug seals, bolts and oil filler cap for a full repair.
- Bolt set provided with suggested torque steps makes consistent installation easier for technicians.
- Designed specifically for VQ35DE 3.5L fitment so PCV, oil cap and coil openings align with factory locations.
- Multiple user reports of good fit and successful sealing after installation.
- Aftermarket construction feels more plastic than factory metal covers which may raise long-term durability questions.
- Some installers recommend using RTV or extra care to keep the gasket in place during assembly, adding an extra step to installation.
Verdict A full, fitment-focused valve cover kit that fixes common VQ35DE oil-leak symptoms and is a practical pick for performance-minded owners who need a complete reseal.
4. Quaneguzy Valve Cover Gasket Kit for Infiniti G37/Q40/Q50/Q60/QX50/QX70/M37
| Compatibility | Fits Infiniti G37, Q40, Q50, Q60, QX50, QX70, M37 (2008-2020) |
|---|---|
| Replaces | 13270-EY01A, 13270-EY01B, 13271-EY00A |
| Material | Rubber |
This Quaneguzy valve cover gasket kit provides a straightforward replacement solution for affected Infiniti VQ-series engines and is intended to restore a reliable seal at the valve cover. The kit includes the rubber gaskets and related seals needed for a full valve cover gasket change and is installed as a direct replacement without modifications. Rubber construction emphasizes high-temperature resilience and tight sealing when compressed between the valve cover and cylinder head, which helps prevent oil leaks and maintains engine bay cleanliness. For routine maintenance or repair of minor oil seepage this kit lets a DIYer or independent shop complete the job quickly. Limitations are typical for aftermarket gasket sets: long-term durability depends on installation quality and engine condition, and installers should verify torque specs and replace any brittle cover bolts or seals at the same time. Expect a no-frills, cost-focused option rather than a premium branded kit with extended service claims.
Best for: Budget-conscious owners looking for an affordable, do-it-yourself replacement to stop oil seepage and keep an Infiniti running clean between major services.
Less Ideal for: Drivers seeking a long-term, premium factory-quality part or those who prefer dealer-sourced components for extended warranty coverage should consider higher-end alternatives.
- Direct replacement kit that includes all valve cover seals for a complete service
- Rubber material engineered for good sealing and high-temperature resistance
- Designed for quick, straightforward installation without modifications
- Aftermarket longevity may vary compared with higher-end factory-quality replacements
- Compatibility and fit depend on correct engine application and careful installation
Verdict A no-frills, budget-friendly valve cover gasket kit that restores sealing for eligible Infiniti engines when installed carefully.
5. Sorello Valve Cover Gasket Set for Infiniti FX35 3.6L V6
| Vehicle compatibility | Infiniti FX35 3.6L V6 (refer to fitment) |
|---|
This Sorello valve cover gasket set is a direct-replacement kit designed for the 3.6L V6 used in Infiniti FX35 models. It includes valve cover gaskets and related intake gasket pieces intended to restore a factory-style seal where aged gaskets cause oil seepage or increased engine noise. The gaskets use a rubberized compound that the manufacturer says resists heat and maintains compression under engine conditions, which makes installation straightforward for a professional or a competent DIYer following service procedures. In practice the set is useful when replacing leaking valve cover seals during routine maintenance because it helps prevent oil from tracking onto ignition components and can marginally reduce valve-train noise. Important limitations are that this is an aftermarket part from a third-party brand and long-term durability will depend on installation and engine condition, and the package may not include every small hardware piece found on every factory rebuild kit. Buyers should verify fitment to FX35 engine variants before starting the job.
Best for: Risk-averse mainstream buyers seeking a practical, replacement-grade gasket to stop leaks and restore normal operation on their Infiniti FX35 without experimental or performance upgrades.
Less Ideal for: Drivers wanting an upgraded performance gasket or a comprehensive overhaul kit that includes all possible hardware and specialty components should consider more complete or OEM-sourced rebuild packages.
- Designed to match original specifications for straightforward installation on compatible engines.
- Rubberized compound intended to resist heat and maintain an effective seal under operating conditions.
- Includes both valve cover gasket and intake manifold gasket pieces for a more complete sealing job.
- Can reduce oil leakage and some engine noise when installed correctly, helping keep ignition components cleaner.
- Aftermarket brand so long-term durability may vary compared with factory-quality parts.
- May not include every small fastener or sealing washer that some repair scenarios require.
Verdict A practical, direct-replacement gasket set for the FX35 that focuses on restoring sealing and reducing leaks for routine maintenance.
6. A-Premium Right Side Engine Valve Cover with Gasket for Infiniti/Nissan VQ35DE
| Position | Right |
|---|---|
| Compatible Engines | V6 3.5L VQ35DE |
| Compatible Models | Infiniti FX35, G35, M35 and Nissan 350Z (listed years) |
| Exterior | Machined |
This A-Premium right-side valve cover is a direct replacement aimed at stopping oil leaks and restoring a clean sealed cylinder head on VQ35DE 3.5L engines used in Infiniti FX35, G35, M35 and Nissan 350Z of the listed years. It ships as a complete cover assembly with gasket so you can replace the leaking passenger-side cover without sourcing separate parts. The machined exterior and included gasket make installation straightforward for a competent DIYer or a shop and many owners report correct alignment with factory lines, PCV and oil cap locations. The practical benefits are lower cost compared with factory parts and a quick repair path to eliminate oil smell, smoking in the engine bay and related misfires or warning lights. Expect a sensible budget option rather than an upgraded performance piece, and some installers recommend using RTV or a preferred gasket brand during fitment to ensure the gasket stays positioned and seals perfectly. Fit and long-term durability may vary from factory-quality covers.
Best for: Practical optimizers who want a cost-effective, ready-to-install replacement to stop oil leaks and get a VQ35DE-powered Infiniti back on the road without paying factory prices.
Less Ideal for: Shoppers seeking a long-term OEM-equivalent warranty-backed or performance-upgraded valve cover should consider higher-end factory-quality replacements or dealer parts.
- Designed specifically to fit VQ35DE right bank applications for listed Infiniti and Nissan models
- Ships as a complete assembly with valve cover and gasket for one-stop replacement
- Machined exterior and correct cutouts for PCV and oil cap aid straightforward installation
- Lower cost alternative to factory replacement while addressing common oil-leak symptoms
- Not positioned as an upgraded or long-life performance cover compared with factory-quality parts
- Some installers recommend additional RTV or aftermarket gaskets to ensure a reliable seal
Verdict A practical, lower-cost right-bank valve cover and gasket kit that restores sealing for VQ35DE engines but may require attention to gasket seating for best long-term results.
7. Fel-Pro VS50900R Valve Cover Gasket Set for INFINITI
| Material | Rubber |
|---|---|
| Model | VS50900R |
| Manufacturer | Fel-Pro |
This Fel-Pro valve cover gasket set supplies the sealing components needed to replace leaking valve cover gaskets on an INFINITI FX35. Sold as a complete repair kit, it uses a cork-rubber formulation that is flexible enough to conform to imperfect sealing surfaces and is intended for the repair environment rather than a cosmetic upgrade. Typical use is engine top-end service: remove the valve cover, clean mating faces, and fit the included gaskets and seals to stop oil seeping into spark plug wells or down the engine. Real-world benefits include a full parts set so you do not have to source small seals separately and a conformable material that helps when the mating surfaces are slightly warped or pitted. Limitations are that the gasket may need a drop of RTV or careful positioning during install to hold it in the groove, and it is a replacement-style part rather than an upgraded performance gasket for high-boost or track use.
Best for: Buyers seeking a reliable, factory-replacement valve cover gasket set for upkeep and routine repairs on an INFINITI FX35 who value completeness and proven sealing performance.
Less Ideal for: Drivers building high-power or track-oriented FX35 engines or those wanting an upgraded aftermarket performance gasket should consider alternatives.
- Complete kit includes all gaskets and seals needed for valve cover service on the FX35
- Cork-rubber compound conforms to imperfect sealing surfaces for a tighter seal
- Manufactured and tested for on-vehicle fit and durability
- Gasket can be thin for handling and may require RTV or careful placement during installation
- Not a specialized high-performance gasket for extreme or modified engines
Verdict A complete, vehicle-specific replacement gasket set that provides dependable sealing for routine FX35 repairs but is not aimed at high-performance builds.
Choosing the Right Infiniti FX35 Valve Cover Gasket: Key Factors to Consider
Material and Construction
Gasket material determines how well the seal resists oil, heat, and mechanical stress. Rubberized materials like high-temp silicone or viton blends offer good elasticity and recover after compression, which helps maintain a seal as the cover and engine expand and contract with temperature.
Thicker or reinforced gaskets can tolerate uneven mating surfaces better, but excessive stiffness makes installation harder and can concentrate stress. Consider materials rated for automotive oil exposure and high temperatures to reduce the risk of hardening or cracking over time.
Fitment Accuracy
A gasket that matches the Infiniti FX35 valve cover contours and bolt hole pattern minimizes gaps where oil can escape. Accurate fitment reduces the need for additional sealants and makes alignment during installation straightforward.
Poorly fitting gaskets often lead to localized compression issues and premature leaks. Confirm that the gasket is specified for the FX35 and includes features like molded retention tabs or integrated seals for spark plug wells if applicable to avoid trial-and-error during replacement.
Resistance To Oil And Additives
Engine oils and additives can degrade some gasket materials over time. Select gaskets formulated to resist swelling, softening, or breakdown when exposed to common motor oils and detergents.
Higher chemical resistance helps the gasket maintain its shape and sealing force over thousands of miles. This factor is especially important if the vehicle uses synthetic oils or oil conditioners that can interact differently with elastomers.
Thermal Stability And Durability
The valve cover area sees regular temperature swings from cold starts to sustained highway driving. Gaskets must resist repeated thermal cycling without losing elasticity or developing hard spots that lead to leaks.
Materials with proven thermal stability will retain compression and avoid shrinkage. Durability affects how often you may need to replace the gasket, so consider expected service life when choosing a part.
Installation Ease And Serviceability
A gasket that is easy to position and secure reduces installation time and the chance of misalignment. Features like integrated seals for spark plug wells or pre-molded bolt hole flanges simplify reassembly.
Also consider whether the gasket requires additional sealant at specific points or tight torque patterns during installation. Clear instructions and compatibility with recommended torque specs help you achieve a consistent, long-lasting seal.
Sealing Performance And Leak Resistance
Ultimately the gasket must prevent oil from escaping under normal engine pressures and when the engine is running. Evaluate expected sealing performance based on material compression, thickness, and ability to conform to imperfect surfaces.
Good leak resistance reduces the chance of oil dripping onto ignition components or collecting in unwanted areas. Think about how quickly a gasket should stop an existing leak and how reliable it will be over time.
FAQ
What are common symptoms of a failing valve cover gasket on an Infiniti FX35?
Common signs include visible oil seepage around the valve cover area, oil on ignition coils or spark plug wells, a burning oil smell when the engine is hot, and smoke from oil contacting hot components. You may also notice lower oil levels between changes. These symptoms often indicate the gasket is no longer sealing effectively.
Can I replace the valve cover gasket myself on an Infiniti FX35?
Many owners can handle the replacement if they have basic mechanical skills and the right tools. The task typically involves removing the valve cover, cleaning mating surfaces, fitting the new gasket, and tightening bolts to the specified torque sequence. If you are uncomfortable with torque requirements or routing ignition components, seek professional help.
Do I need sealant when installing a new valve cover gasket?
That depends on the gasket type and manufacturer guidance. Some gaskets are designed for dry installation while others recommend a small amount of sealant at specific corners or joints. Follow the installation instructions and the vehicle's service manual to avoid overusing sealant, which can cause extra mess or interfere with sealing.
How long should a valve cover gasket last on an Infiniti FX35?
Service life varies with material, driving conditions, and maintenance, but durable gaskets can last many years under normal use. Factors like frequent short trips, exposure to high heat, and oil additives can shorten lifespan. Inspect the valve cover area periodically for early signs of seepage.
Will replacing the valve cover gasket fix oil leaks I see under the engine?
Replacing the valve cover gasket will address leaks originating at the top of the engine. If oil is pooling under the engine, the source might be elsewhere such as an oil pan gasket, front or rear main seal, or a loose drain plug. Confirm the leak source before assuming a valve cover gasket replacement will resolve it.
How We Chose the Best Infiniti FX35 Valve Cover Gasket
We prioritized gaskets designed specifically to restore and maintain a leak-free seal on the Infiniti FX35 engine. Key evaluation criteria included material construction and resilience to oil and heat, sealing geometry and compression recovery, compatibility with the FX35 valve cover design, durability under thermal cycling, and ease of installation when following factory torque specs. We also assessed gasket resistance to common failure modes such as hardening, cracking, and oil permeation after exposure to engine oils and additives. Fitment precision and retention features that simplify positioning during assembly were considered. Exclusions: we did not include universal or generic gaskets lacking specific fitment for the Infiniti FX35, nor did we include kits without the necessary sealing components or clear compatibility documentation.
Our full evaluation process is outlined in our review methodology.
Conclusion
When choosing a valve cover gasket for the Infiniti FX35, prioritize material compatibility with engine oils, precise fitment to the FX35 valve cover, and good thermal stability. Ease of installation and clear guidance on torque and sealing points will reduce the chance of a repeat leak. Expect tradeoffs between softer materials that conform well to imperfect surfaces and firmer constructions that resist extrusion. Focus on a gasket that matches the vehicle-specific fitment and offers the durability needed for your driving conditions.
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