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If you own a Honda Accord with the 3.5L V6, a failing valve cover gasket can cause visible oil leaks, burning smells, and messy engine bays. Choosing the right valve cover gasket matters because the wrong material or poor fit can let oil seep past the cover or fail quickly under heat and vibration. This guide collects seven top options suited to the Accord 3.5L V6 and explains the practical differences that matter when you replace a leaking seal.The shortlist focuses on correct fitment, durable materials, and ease of install so you can quickly address leaking oil from the valve cover and get the engine back to reliable operation. Read on for the criteria used to select these options and the factors to consider when planning a valve cover gasket replacement.
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Top Picks at a Glance
| Best Overall The best all-around choice for most situations | A-Premium Valve Cover Gasket Set for Honda/Acura V6 3.5L/3.7L |  |
| Best Quality Built to a higher standard if you want something more solid | Sixity Auto Valve Cover Gasket Set for Honda Accord 3.5L V6 (2008–2017) |  |
| Best Value The sweet spot between price and what you get | Riyhch Valve Cover Gasket Set VS50773R for 3.5L/3.7L V6 (20-piece) |  |
| Best Budget The cheapest option that still gets the job done reliably | Shtuomoland Valve Cover Gasket Set with Spark Plug Tube Seals for 3.5L V6 |  |
| Highest Rated A top-rated pick with lots of positive feedback | Fel-Pro VS50773R Valve Cover Gasket Set |  |
| Most Popular A crowd favorite that many people choose with confidence | Ortopia Engine Valve Cover Gasket Set for 3.5L/3.7L Honda and Acura V6 |  |
1. A-Premium Valve Cover Gasket Set for Honda/Acura V6 3.5L/3.7L
| Compatible engines | Honda/Acura V6 3.5L and 3.7L |
|---|---|
| Included parts | Left and right valve cover gaskets, spark plug tube seals, 10 grommets |
| Material | NBR/ACM rubber |
| Operating temperature | -20°C to 150°C |
This valve cover gasket set supplies left and right bank gaskets, spark plug tube seals and grommets intended to replace worn seals on Honda and Acura V6 3.5L and 3.7L engines. It is typically used when oil is seeping from the valve cover area or during a valve cover service; the kit includes the common components needed to reseal the cover without sourcing individual pieces. Made from NBR/ACM rubber and tested for heat and oil resistance, the gaskets are designed to match factory dimensions so they install like a factory replacement. Practical benefits include a full kit that addresses both banks and the spark plug tube seals, lab-tested temperature durability, and compatibility across the specified Accord, Odyssey, Pilot, Ridgeline and several Acura models. Limitations are that the kit only fits the listed V6 engine applications and does not include detailed installation hardware beyond grommets, so professional installation or basic mechanical experience is recommended for leak-free results.
Best for: Buyers who want a straightforward, engine-specific replacement that restores a factory-style seal and stops valve-cover oil leaks without buying separate pieces.
Less Ideal for: If you need a universal gasket set, parts for a different engine, or a kit that includes extra fasteners and installation accessories, look elsewhere.
- Complete kit includes both left and right bank gaskets plus spark plug tube seals and grommets
- Made from oil- and heat-resistant NBR/ACM rubber with lab-tested temperature performance
- Engine-specific fitment for Honda and Acura V6 3.5L/3.7L models simplifies replacement and reduces fitment guesswork
- Fitment is limited to the listed Honda and Acura V6 applications and will not suit other engines
Verdict: Choose this kit when you need a complete, engine-specific valve cover gasket set that reproduces factory fit and stops oil leaks on Honda/Acura V6 3.5L or 3.7L engines.
2. Sixity Auto Valve Cover Gasket Set for Honda Accord 3.5L V6 (2008–2017)
| Material Type | Rubber |
|---|---|
| Compatible Engines | Honda Accord 3.5L V6 (2008-2017) |
| Includes | Grommets and spark plug tube seals |
This Sixity Auto valve cover gasket set is a direct replacement aimed at stopping oil leaks on Honda Accord 3.5L V6 engines from 2008 through 2017. The kit includes molded rubber gaskets plus grommets and spark plug tube seals to restore the seal around the valve cover and plug wells. In use it replaces deteriorated factory seals to eliminate oil seepage, keep combustion chambers and ignition components cleaner, and prevent oil from fouling spark plugs. The molded rubber material should compress to the valve cover flange for a snug fit and simplify installation for someone doing a routine cover removal. Because this is a replacement part rather than an upgraded performance gasket, it focuses on restoring factory sealing rather than improving head gasket performance under extreme boost or track conditions. Buyers should confirm exact engine code and pictured gasket shape before installing, and expect to reuse or replace valve cover bolts and follow proper torque specs during installation.
Best for: Someone who wants a straightforward factory-quality replacement to stop oil leaks on a Honda Accord 3.5L V6 and prefers a direct-fit gasket kit for routine engine maintenance.
Less Ideal for: Drivers who are building high-boost or track engines and need upgraded sealing materials or specialized multi-layer performance gaskets should look for dedicated performance parts.
- Designed specifically for Honda Accord 3.5L V6 (2008–2017) fitment with included grommets and spark plug tube seals
- Molded rubber construction provides a factory-style seal to stop common oil leaks
- Includes the necessary seals to address both valve cover flange and spark plug tube sealing in one kit
- Direct replacement format simplifies installation for routine maintenance or repair
- Not marketed as a high-performance or upgraded material for boosted or track engines
Verdict: A practical factory-style gasket kit that restores proper sealing on 3.5L V6 Honda Accords for reliable leak-free operation.
3. Riyhch Valve Cover Gasket Set VS50773R for 3.5L/3.7L V6 (20-piece)
| Brand | Riyhch |
|---|---|
| Unit Count | 20 Count |
| Compatible Engines | 3.5L/3.7L V6 (listed applications) |
| Replacement Part Numbers | VS50773R, VS50559, 151081801, 120305G0000 |
This Riyhch valve cover gasket set supplies the full assortment of gaskets needed when servicing valve covers and solenoid openings on compatible 3.5L/3.7L V6 engines. It is typically used during a valve cover removal or to stop persistent oil seepage around the cover and PCV/solenoid ports. The kit is marketed as precision engineered for a close fit and made from materials intended to resist heat and aging, which means it should seal reliably and reduce the chance of repeat leaks. Buyers will appreciate that the set includes multiple pieces so you have the seals needed for a complete job rather than hunting down individual gaskets. Expect straightforward fitment when the part numbers and engine code match; installation is standard workshop work but the manufacturer suggests professional guidance if you are unsure. Limitations are that correct engine code and vehicle application must be confirmed before purchase and the kit does not include metal components or fasteners, so you may need additional parts for a full rebuild.
Best for: Buyers looking to perform a cost-effective, preventative or corrective valve cover service on a 3.5L Honda V6 who prioritize getting a complete gasket set that reduces repeat trips for missing parts.
Less Ideal for: People who need hardware, metal components, or a complete engine gasket overhaul beyond valve cover and solenoid seals should look for more comprehensive kits or dealership parts.
- Complete 20-piece kit covers valve cover and solenoid gasket needs for a full service
- Designed for a precision fit to reduce install time and improve sealing
- Materials rated for high temperature and aging resistance to limit future leaks
- Includes replacement part numbers for easy compatibility checks
- Requires verification of engine code and vehicle fitment before ordering
Verdict: A practical, complete gasket kit that restores valve cover sealing on compatible 3.5L V6 Hondas and saves time by supplying all necessary seals for the job.
4. Shtuomoland Valve Cover Gasket Set with Spark Plug Tube Seals for 3.5L V6
| Brand | Shtuomoland |
|---|---|
| Model | Engine Valve Cover Gasket Set |
| Manufacturer | Shtuomoland |
This Shtuomoland valve cover gasket set supplies the basic sealing parts needed when replacing leaking valve cover seals on 3.5L V6 Honda and Acura engines. The kit includes two valve cover gaskets, six spark plug tube seals, and 12 grommets so you have the common pieces needed to reseal both banks without sourcing extra components. In practical use it suits DIY or budget-oriented shops doing routine gasket replacement to stop oil seepage around the valve cover and plug wells, and the product description emphasizes a precision design for a leak proof seal. The package is straightforward and focused on parts rather than premium materials or extended support, so installers should verify fit against the vehicle production codes listed. Expect reasonable short-term sealing performance when installed carefully with clean mating surfaces, but this is a value-oriented aftermarket option rather than a premium factory-quality replacement and may not match long-term durability of higher-end gaskets.
Best for: Buyers replacing leaking valve cover seals on a tight budget who want a complete basic kit to do the job themselves or save on labor costs.
Less Ideal for: Those seeking an OEM-equivalent or long-term performance upgrade for high-mileage or high-heat engines should consider premium replacement parts instead.
- Includes full basic kit: 2 valve cover gaskets, 6 spark plug tube seals, and 12 grommets
- Packaged for straightforward DIY replacement or quick shop jobs
- Specifically listed for 3.5L V6 Honda and Acura engine applications
- Value aftermarket build quality may not match longer-term durability of premium factory-quality gaskets
- Limited documentation on materials and heat/chemical resistance
Verdict: A cost-conscious complete gasket kit for 3.5L V6 Honda/Acura engines that lets DIYers and budget-minded shops stop oil leaks without sourcing parts separately.
5. Fel-Pro VS50773R Valve Cover Gasket Set
| Material | Rubber (cork-rubber formulation) |
|---|---|
| Model | VS50773R |
| Manufacturer | Fel-Pro |
| Unit Count | 1.0 Count |
This Fel-Pro VS50773R valve cover gasket set supplies the gaskets and related seals needed when replacing leaking valve cover seals on compatible Honda and Acura 3.5L V6 engines. Designed with a cork-rubber formulation, the kit is highly conformable so it compensates for slight surface imperfections that develop over time. DIYers and professional techs will use it when removing the valve cover to stop oil seepage into spark plug wells or to refresh aging seals. The set includes spark plug tube seals and valve cover bolt seals so you can complete the typical valve cover service without sourcing individual parts. Users report straightforward fitment and long-term sealing when installed carefully and torqued correctly. Be mindful that spark plug tube seals can be delicate during installation and old seals may be hard to remove without marring the valve cover, so take care or plan for potential valve cover replacement if the cover is damaged. Some buyers also noted occasional missing small parts in packages, so confirm you have every seal before starting the job.
Best for: Buyers who prioritize a reliable, repair-oriented gasket set to stop oil leaks on Honda 3.5L V6 engines and prefer a kit that includes the common seals needed for a valve cover service.
Less Ideal for: If you want a one-time quick fix without careful disassembly or you cannot avoid potential valve cover damage during seal removal, consider professional service or replacing the valve cover instead.
- Engineered cork-rubber material conforms to imperfect sealing surfaces for improved sealing.
- Includes spark plug tube seals and bolt seals so the valve cover service is more complete.
- Built and tested for automotive repair applications with reported good long-term fit and seal.
- Fits several Honda and Acura 3.5L V6 applications listed in the product description.
- Some users report fragile spark plug tube seals that require careful handling during installation.
- A few packages lacked small parts in rare cases, so a pre-check is necessary before beginning the job.
Verdict: Choose this Fel-Pro gasket set when you need a vehicle-matched, repair-grade valve cover gasket solution that restores reliable oil sealing on Honda 3.5L V6 engines.
6. Ortopia Engine Valve Cover Gasket Set for 3.5L/3.7L Honda and Acura V6
| Brand | Ortopia |
|---|---|
| Model | 12341-R70-A00 |
| Compatible Engines | 3.5L and 3.7L V6 applications listed |
| Customer Rating | 4.4 out of 5 (48 reviews) |
This Ortopia valve cover gasket set replaces the factory seals on select 3.5L and 3.7L Honda and Acura V6 engines to stop oil leaks and restore proper sealing. The kit is made from heat- and cool-resistant rubber designed to handle the repeated expansion and contraction of the cover, and it ships complete with the main gasket pieces you need for a direct replacement. Installation is straightforward for anyone comfortable removing the valve cover; buyers report exact fits on common applications such as the Accord, Pilot, Odyssey, Ridgeline and several Acura models. The material and machining aim to match factory fit and perform under high-temperature conditions, giving a longer-lasting seal than brittle old gaskets. A few buyers noted fit issues on certain parts, so verify the part numbers against your vehicle before ordering. For routine maintenance or fixing a leaking valve cover on the specified V6 engines, this set is a practical, cost-effective alternative to dealer parts.
Best for: A buyer who wants a proven, budget-conscious replacement to stop valve-cover oil leaks on specified Honda and Acura 3.5L/3.7L V6 engines and values other owners' positive fit and performance reports.
Less Ideal for: Those who need guaranteed dealer-sourced parts for warranty or resale reasons or who are unwilling to double-check part numbers before purchase.
- Designed to match factory fit for listed 3.5L and 3.7L V6 engine applications
- Heat- and cool-resistant rubber formulation intended to resist warping and sealing failures
- Machined exterior and inspection before shipment suggest consistent manufacturing quality
- Reported straightforward installation when replacing the valve cover gasket
- Some customers reported occasional fitment problems on certain pieces, requiring verification before installation
- Not a brand OEM part which may concern buyers wanting dealer-sourced components
Verdict: A cost-effective, factory-matching gasket kit that reliably stops oil leaks on the listed Honda and Acura 3.5L/3.7L V6 engines when fitment is confirmed.
Choosing the Right Honda Accord 3.5L V6 Valve Cover Gasket: Key Factors to Consider
Fitment and Compatibility
Correct fitment is the foundation of a successful valve cover gasket replacement. The gasket must match the Honda Accord 3.5L V6 sealing surface geometry, bolt hole pattern, and any integrated passages around spark plug wells. Even small misalignments or an incorrect profile can produce an incomplete seal that permits oil to leak under load.
When evaluating fitment, check whether the gasket is supplied as a complete one-piece unit or as multiple sections that must be joined. One-piece gaskets reduce installation complexity and minimize the risk of misplacement. Also confirm compatibility with your engine's valve cover material and any additional seals required for spark plug tube seals or PCV grommets.
Material and Durability
Gasket material directly affects longevity under heat, oil exposure, and vibration. Modern molded rubber or elastomer gaskets resist oil swelling and maintain compression better than older cork-rubber composites. Materials with good compression set resistance keep sealing pressure over repeated heat cycles, which is important on a V6 that routinely runs hot.
Inspect how the material reacts to engine oil and additives if your vehicle has seen different oils or fuel treatments. Higher-quality elastomers typically exhibit less hardening and cracking with age, reducing the chance of future leaks and repeat replacements.
Sealing Design and Spark Plug Tube Seals
On the Accord 3.5L V6, the valve cover gasket often incorporates additional seals for spark plug tubes and other openings. A gasket with integrated spark plug tube seals simplifies installation and reduces potential leak points compared with separate rubber boots.
Assess whether the gasket design accounts for seal compression at critical contact points and whether it has raised sealing ridges or bead profiles that help maintain contact under torque. Properly designed sealing features prevent oil migration toward ignition components and the exhaust manifold.
Installation Ease and Hardware Requirements
Installation complexity affects total labor time and the likelihood of a correct repair. Gaskets that come as a single molded piece and include necessary small components reduce the number of steps and the chance of missing parts. Consider whether additional items such as spark plug tube seals, small O-rings, or adhesive are required and whether they are included.
Also factor in whether valve cover bolt grommets or washers are recommended for replacement. Reusing old, hardened grommets can create uneven clamping force and lead to new leaks. A straightforward installation path saves time and lowers the risk of improper torque or misalignment.
Resistance to Oil and Heat Cycling
Valve cover gaskets are exposed to hot engine oil and repeated thermal cycles that cause expansion and contraction. Gaskets designed for high resistance to oil contamination and thermal degradation will perform longer without cracking or becoming brittle. This resistance reduces the chance of leaks caused by material breakdown.
Look for specifications or manufacturer guidance about operating temperature ranges and resistance to common engine fluids. Materials rated for automotive oil service and elevated temperatures are preferable for maintaining a long-term seal on the V6 engine.
Serviceability and Replacement Frequency
Consider how often you expect to service the valve cover area when choosing a gasket. If you perform frequent spark plug or ignition coil maintenance, select a gasket that tolerates repeated removal and reinstallation without rapid wear. Some gasket designs compress permanently and are intended to be replaced each time the cover is removed.
Weigh the tradeoff between initial cost and expected replacement intervals. A more durable gasket may cost more up front but reduce labor and parts needs over multiple service cycles, which is an important consideration for owners planning long-term maintenance.
Common Valve Cover Gasket Leak Locations On The 3.5L V6
Leak paths on the 3.5L V6 typically occur where the gasket surface meets bolt lines, around spark plug tube seals, and at interface areas with accessories or breathers. Oil can migrate along these weak points and drip onto exhaust components or the engine block, creating visible oil spots and burning odors.
Understanding the most common leak spots helps you inspect the engine quickly and determine whether a full gasket replacement is necessary or if a localized seal or grommet swap could be sufficient.
- Bolt hole compressions that have uneven torque
- Worn or missing spark plug tube seals
- Cracked or hardened gasket material near high-heat areas
- Damaged valve cover flange or warped cover surface
Signs And Symptoms Of A Failing Valve Cover Gasket
Symptoms often include visible oil on the top of the engine, oil pooling beneath the vehicle, burning oil smells during or after driving, or fouled ignition components. The 3.5L V6 may also show oil accumulating near the front or rear cam cover seams depending on where the gasket has deteriorated.
Minor seepage can be easy to miss, so check under plastic covers and around the spark plug wells. Catching symptoms early prevents oil from reaching hot exhaust parts and reduces secondary damage to wiring and rubber components.
- Noticeable oil streaks on the valve cover or nearby components
- Oil on spark plug wells or fouled coils
- Burning odor after running the engine
- Drop in oil level without visible pan leaks
Preparing For A Valve Cover Gasket Replacement
Before you begin, gather the correct gasket for the 3.5L V6, any required spark plug tube seals, replacement bolt grommets, and the proper tools. A torque wrench and manufacturer-specified torque values are important for achieving an even clamp across the valve cover flange.
Clean the mating surfaces thoroughly, remove old gasket material carefully, and inspect the valve cover flange for warping or damage. Work in a clean environment to prevent foreign material from entering the engine when the cover is removed.
- Have a torque wrench and clean rags on hand
- Replace bolt grommets if they show hardening or cracks
- Label or document bolt locations if they vary in length
- Keep the work area free of dirt and debris
When To Replace Spark Plug Tube Seals
Spark plug tube seals are a common companion failure with valve cover gaskets. If oil is found inside the spark plug wells or ignition components are contaminated, replacing the tube seals during the gasket job prevents future leaks and reduces the need to reopen the cover later.
Even if tube seals appear intact, consider replacement whenever the valve cover is removed, since handling and heat exposure can accelerate material degradation. Replacing them as part of the gasket service is cheap insurance against repeat work.
- Replace tube seals when oil is present in the well
- Swap seals if they appear flattened or cracked
- Consider replacement for vehicles with high mileage or long service intervals
Torque Specs And Tightening Sequence Guidance
Properly torquing valve cover bolts is essential to create an even seal without over-compressing the gasket material. Follow the factory-recommended torque values and a progressive tightening pattern that brings opposing bolts to spec gradually to avoid warping the cover.
If torque specs are not at hand, a calibrated torque wrench and a tightening sequence from the service manual are the safest approach. Over-torquing can damage bolt bosses and cause premature gasket failure, while under-torquing can leave gaps that permit leaks.
- Use a progressive star or crisscross pattern when tightening
- Torque in multiple stages to reach final specification
- Avoid using air tools for final torque to prevent overshoot
Still looking for the perfect fit?
Select your Honda Accord configuration to see the most relevant Valve Cover Gaskets recommendations
How We Chose the Best Honda Accord 3.5L V6 Valve Cover Gasket
We started by filtering parts specifically made to fit the Honda Accord 3.5L V6 engine configuration to ensure correct fitment and sealing surface compatibility. Our evaluation emphasized material construction, concentrating on common gasket types such as molded rubber, cork-rubber composites, and multi-layered elastomer designs that withstand oil exposure and under-hood temperatures.Durability testing criteria included resistance to heat cycling, compression set behavior, and known longevity in similar engine environments. We also evaluated sealing performance by considering gasket cross-section and how well the design accommodates valve cover bolt layouts and integrated sealing areas around spark plug tubes. Ease of installation was assessed by noting whether the gasket is a single-piece molded unit or requires additional seals and whether published torque specs and installation guidance are generally available.Additional filters excluded any parts that lacked clear fitment data for the 3.5L V6, used questionable materials not suitable for continuous oil exposure, or required excessive modification to install. We prioritized products that balance long-term sealing performance, correct fitment, and installation practicality for typical DIYers and professional technicians alike.
Our full evaluation process is outlined in our review methodology.
FAQ
How can I tell if my Accord 3.5L V6 valve cover gasket is leaking?
Look for oil on the top of the engine, oil pooled underneath the vehicle, oil in the spark plug wells, or a burning oil smell after driving. Inspecting around bolt lines and spark plug tube areas often reveals the leak source.
Is it necessary to replace spark plug tube seals when changing the valve cover gasket?
Often it is recommended. Tube seals are frequent failure points and replacing them during the gasket job prevents oil from re-entering the spark plug wells and reduces the chance of needing to remove the cover again.
Can I reuse the old valve cover gasket on the 3.5L V6?
Reusing an old gasket is usually not advisable because most gasket materials compress and take a permanent set. Replacing the gasket ensures a fresh seal and lowers the risk of repeat leaks after reinstallation.
What tools do I need to replace the valve cover gasket on this engine?
Basic hand tools, a torque wrench, gasket scraper or plastic scraper for cleaning mating surfaces, and clean rags are typically required. Depending on the vehicle, you may also need to remove intake components or ignition coils to access the cover.
How long does a valve cover gasket replacement usually take?
The job often takes a few hours for a DIYer familiar with the engine and slightly less in a professional shop. Time varies with accessory removal complexity, the condition of bolts and grommets, and whether additional repairs are needed.
Will a leaking valve cover gasket affect engine performance?
A leaking gasket usually does not directly impact engine power, but oil fouling of ignition components can cause misfires and rough running. Also, oil on hot exhaust components can create smoke and odors that require immediate attention.
Final Verdict
Prioritize correct fitment, durable material, and proper sealing features when replacing the valve cover gasket on a Honda Accord 3.5L V6. Addressing spark plug tube seals and bolt grommets during the job reduces the chance of repeated leaks and keeps ignition components clean.Balance ease of installation and long-term durability for the best overall outcome. With careful surface preparation and correct torque procedures, you can restore a reliable seal and prevent oil from leaking onto hot engine parts or electrical components.
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