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When you need to restore engine sealing on a Mitsubishi Eclipse, choosing the right gasket set affects reliability, leak prevention, and long-term engine health. A proper gasket set ensures correct sealing at critical joints so the engine maintains oil and coolant integrity and combustion compression.This guide highlights five shortlisted Mitsubishi Eclipse engine gasket sets chosen for common repair needs, from head gasket repair to full engine overhaul kits. We evaluated packaging contents and material quality, plus fitment and durability expectations to help you decide which type of kit suits your repair. Read on to find the right sealing solution for your project.
Looking for other parts? See all Mitsubishi Eclipse parts & accessories.
Top Picks at a Glance
| Best Overall The best all-around choice for most situations | DNJ Full Gasket Set FGS1055 for 2.4L 4G64 Engines (1999–2005 Chrysler/Dodge/Mitsubishi) |  |
| Best Quality Built to a higher standard if you want something more solid | DNJ Full Gasket Set FGS1031 for 1999–2005 Mitsubishi/Chrysler/Dodge 3.0L V6 |  |
| Best Value The sweet spot between price and what you get | INFINAUTO Cylinder Head Gasket Kit for Mitsubishi 4G69 (CU5W) |  |
| Highest Rated A top-rated pick with lots of positive feedback | DNJ HG162 Head Gasket for 2.4L Mitsubishi 4G69 (2004–2012) |  |
| Best Seller A high-volume bestseller chosen again and again | ASTOU Head Gasket Set for Mitsubishi 2.4L Engines |  |
1. DNJ Full Gasket Set FGS1055 for 2.4L 4G64 Engines (1999–2005 Chrysler/Dodge/Mitsubishi)
| Brand Name | DNJ |
|---|---|
| Model | FGS1055 |
| Part Number | FGS1055 |
| Engine Designation | 4G64 |
| Warranty Type | 12-month or 12,000-mile limited warranty |
This DNJ full gasket set supplies the complete range of gaskets and seals needed when overhauling a 2.4L 4G64 engine found in 1999–2005 Chrysler, Dodge, and Mitsubishi vehicles including the Eclipse. It is intended for engine rebuilds or head gasket repairs and is supplied as an overhaul kit to replace all critical sealing surfaces at once. Notable features include factory-replacement fitment intent, part interchange references, and a limited 12-month/12,000-mile warranty. In practical use the kit simplifies a timing or head service by providing matched gaskets so you do not need to source individual pieces, and the premium sealing focus reduces risk of repeated leaks after reassembly. Limitations are typical of aftermarket gasket sets: material details are not listed on the product page and professional installation with proper torque procedures is required to ensure long-term sealing. For a balanced buyer who wants a single kit to complete an engine job, this set covers the bases cleanly and keeps the rebuild process straightforward.
Best for: Balanced owners who want a single, complete gasket set to perform a head gasket repair or full engine reseal on a 2.4L 4G64-equipped Eclipse and prefer the convenience of an all-in-one overhaul kit.
Less Ideal for: Those seeking detailed material specs for high-performance or modified engines or DIYers who prefer to select individual upgraded gaskets should consider alternative specialty options.
- Complete overhaul kit covering head and auxiliary sealing surfaces so multiple gaskets are replaced at once
- Marketed for direct fit to 1999–2005 2.4L 4G64 engines, matching factory replacement intent
- Includes part interchange references to simplify confirmation of fitment
- Backed by a limited 12-month or 12,000-mile warranty for replacement of defective parts
- Product listing does not specify gasket materials or construction details
- Requires correct installation and torque procedures to avoid leaks
Verdict: A convenient, factory-fit full gasket kit that supplies everything needed to reseal a 2.4L 4G64 engine during a head or engine overhaul.
2. DNJ Full Gasket Set FGS1031 for 1999–2005 Mitsubishi/Chrysler/Dodge 3.0L V6
| Fits engines | 1999-2005 3.0L V6 6G72 |
|---|---|
| Part number | FGS1031 |
| Interchange | HS9537PT & CS9537 |
| Warranty | 12-month / 12,000-mile limited warranty |
This DNJ Full Gasket Set supplies all the engine gaskets needed when rebuilding or servicing the 3.0L 6G72 V6 found in 1999–2005 Mitsubishi Eclipse, Galant and related Chrysler/Dodge models. The kit is intended for engine teardown and reassembly jobs and includes intake, exhaust, valve cover, head and other common gaskets to restore sealing where old or damaged gaskets are failing. DNJ positions this as a quality-focused replacement with factory-compatible fitment and an included limited 12-month or 12,000-mile warranty for defects. Using a full set reduces the chance of mismatched pieces during a head job and simplifies parts sourcing for a performance- oriented rebuild. Expect the practical benefit of consolidated parts and straightforward fitment, though you must verify engine VIN code and interchange numbers before purchase to confirm exact compatibility. This is not a performance-upgrade gasket set for extreme boost or race use, so builders seeking higher-pressure sealing should consider specialty head gaskets instead.
Best for: Performance-oriented owners rebuilding or refreshing the 3.0L V6 who prioritize reliable, factory-style sealing and want a single kit that covers an entire engine reassembly.
Less Ideal for: Racers or builders planning high-boost, high-power modifications who need upgraded or specialty head gaskets designed for extreme sealing demands.
- Complete kit covers head, intake, exhaust and common engine gaskets to simplify a full rebuild
- Made for the 6G72 3.0L V6 platform to reduce fitment errors on specified model years
- Backed by a limited 12-month or 12,000-mile warranty against defects
- Not engineered for high-boost or race-level sealing demands
- Compatibility must be confirmed with VIN/part interchange before installation
Verdict: A complete, factory-fit full gasket kit for 1999–2005 3.0L V6 engines that simplifies engine rebuilds with OEM-style sealing.
3. INFINAUTO Cylinder Head Gasket Kit for Mitsubishi 4G69 (CU5W)
| Suitable for | Mitsubishi 4G69 (CU5W) |
|---|---|
| OE reference | MD979394 |
| Material | Rubber, Metal |
This INFINAUTO cylinder head gasket kit is a direct replacement set intended for the Mitsubishi 4G69 (CU5W) used in the Eclipse. It replaces the head gasket components with a rubber-and-metal construction that the listing describes as corrosion resistant and engineered for high-temperature durability. Installation is typical for head gasket work: the old gasket is removed, mating surfaces are checked and cleaned, and the new kit is torqued to spec. The seller notes the kit matches factory sealing points and offers elasticity and toughness to maintain a long-term seal under thermal cycling. Practical benefits include a complete gasket set in one package and parts that aim to fit without modification, which helps save time during an engine rebuild or head service. Limitations are typical of aftermarket gasket sets: longevity and fit depend on correct installation and cylinder-head condition, and the listing provides no detailed material grades or performance testing data, so this is a budget-conscious replacement rather than a performance or guaranteed lifetime solution.
Best for: Practical optimizers who want an affordable, ready-to-install gasket kit to complete a head service on a Mitsubishi Eclipse with the 4G69 engine and prefer value over premium upgrades.
Less Ideal for: Buyers seeking performance-grade or lifetime-guaranteed head gaskets for high-boost or race applications should consider specialty aftermarket options instead.
- Made for Mitsubishi 4G69 (CU5W) so fitment targets the Eclipse engine layout
- Rubber and metal construction marketed for corrosion resistance and high-temperature use
- Sold as a complete cylinder head gasket kit to simplify head service or rebuilds
- No published material grades or laboratory test results to compare durability
- Performance and sealing longevity rely on correct installation and cylinder-head condition
- Limited manufacturer information and support details in the product listing
Verdict: A budget-focused, fit-targeted head gasket kit for the Mitsubishi 4G69 that offers a complete replacement set but lacks published performance specs.
4. DNJ HG162 Head Gasket for 2.4L Mitsubishi 4G69 (2004–2012)
| Brand | DNJ |
|---|---|
| Model | HG162 |
| Compatible engines | 2.4L 4G69 L4 SOHC |
| Fitment years | 2004-2012 Mitsubishi Eclipse, Galant, Lancer, Outlander |
The DNJ HG162 is a replacement head gasket set engineered to restore the cylinder head-to-block seal on Mitsubishi 2.4L 4G69 engines used in 2004–2012 Eclipse, Galant, Lancer, and Outlander models. It uses multi-layered materials and coatings intended to resist combustion pressures, high temperatures, and common leak paths where head gaskets fail. Typical use is during a head gasket repair or engine rebuild when you need a dependable sealing surface between the head and block. The set emphasizes durability and consistent sealing over time, which suits long-term repairs rather than short-term fixes. Expect straightforward fitment for the specified engines and the advantage of aftermarket quality control from an established parts maker. Limitations include the usual need for professional installation and that gasket longevity depends on proper head and block surface prep and correct torque procedures; it does not address underlying problems such as warped heads or cracked blocks.
Best for: Reliability-focused owners who prioritize a durable, long-term repair for a 2004–2012 Mitsubishi 2.4L engine and who value parts from an experienced aftermarket supplier.
Less Ideal for: Drivers looking for a quick temporary fix or a solution for engines with severe head warpage or block cracks should consider more extensive engine work or specialist services instead.
- Made for the 2.4L 4G69 engine so fitment matches specified Mitsubishi models
- Constructed with multi-layered steel and coated sealing surfaces for improved heat and pressure resistance
- Positioned as a durable replacement intended for full head gasket repairs
- Requires correct head/block resurfacing and professional installation to achieve intended sealing performance
Verdict: A durable, multi-layered replacement head gasket built to restore reliable sealing on Mitsubishi 2.4L 4G69 engines.
5. ASTOU Head Gasket Set for Mitsubishi 2.4L Engines
| Brand | ASTOU |
|---|---|
| Model | HEAD GASKET SET |
| Compatible engines | 2.4L Mitsubishi models listed in product description |
| Includes | MLS head gasket, intake and lower gaskets, camshaft seals, O-rings, gasket sealant |
This ASTOU head gasket set supplies the parts needed when replacing the cylinder head gasket on compatible 2.4L Mitsubishi engines. The kit bundles an MLS head gasket plus intake and lower gaskets, camshaft seals, O-rings and gasket sealant so you have the common pieces required for a full head gasket service. The MLS construction and next-generation coating are intended to improve sealing under higher temperatures and reduce combustion leakage, while the included sealant and small gaskets simplify reassembly. It is presented as a reproduction kit, so installers should verify fitment and inspect each component before installation. For a DIY mechanic or a technician performing a full head job, the kit reduces the need to source individual parts and can save time, but those seeking factory-brand components may prefer OEM replacements. Also confirm deck surface condition and torque procedures during installation because correct sealing depends on proper machining and installation technique.
Best for: Practical, risk-averse buyers who prioritize getting a full, ready-to-install gasket kit for a 2.4L Mitsubishi engine repair and prefer minimizing trips to parts suppliers.
Less Ideal for: Buyers who require factory-brand or dealer-sourced components for warranty or exact OEM match should consider dealer parts instead.
- Complete kit contains MLS head gasket plus intake and lower gasket set and common seals to cover a head gasket service
- MLS head gasket with advanced coating designed to improve sealing at higher engine temperatures
- Includes camshaft seals and small gaskets so fewer separate parts need sourcing
- Provides gasket sealant and assorted O-rings to aid reassembly
- Reproduction parts rather than factory-brand components which may differ slightly in fit or finish
- Fitment must be double-checked against the vehicle and parts inspected before installation
Verdict: A convenient, all-in-one reproduction gasket kit for 2.4L Mitsubishi head jobs that saves parts hunting but is not an OEM factory-branded replacement.
Choosing the Right Mitsubishi Eclipse Engine Gasket Set: Key Factors to Consider
Gasket Material and Construction
Gasket material determines how well a seal holds up under heat, pressure, and chemical exposure. Multi-layer steel or composite head gaskets typically offer better resistance to combustion pressures and thermal cycling than basic paper gaskets. For oil and coolant seals, nitrile or fluoroelastomer materials provide greater chemical resistance and longevity.
Construction details such as reinforced fire rings, embossed sealing beads, and metal core layers influence durability and the likelihood of future leaks. Choosing the right material and construction can reduce the chance of warping-related failures and extend the interval between major repairs.
Scope of Included Components
A complete kit should include all gaskets and seals needed for the specific repair you intend to perform. Full overhaul kits typically contain head gaskets, intake and exhaust manifold gaskets, valve cover gaskets, oil pan gaskets, timing cover gaskets, and various O-rings and seals. Partial kits target a narrower repair such as head gasket replacement or timing cover service.
Selecting a kit with the correct scope avoids multiple disassemblies and the expense of sourcing missing seals later. Verify whether fastener washers, alignment dowels, or crush washers are included if your repair procedure requires them.
Fitment and Compatibility
Accurate fitment to the Mitsubishi Eclipse engine is critical. Gaskets must match bore diameters, bolt hole patterns, and sealing surface profiles. Poorly fitting gaskets can lead to persistent leaks, uneven clamping, or premature failure.
Look for kits that reference the exact engine code or production years for the Eclipse and provide technical drawings or part numbers where possible. Vehicle-specific kits reduce the risk of dimensional mismatch and simplify installation.
Sealing Surface Preparation and Installation Needs
Successful gasket installation depends as much on surface preparation as on the gasket itself. Cylinder head and block surfaces must be clean, flat, and free of old gasket material. Some kits require the use of sealants or surface primers for specific gaskets, while others are designed for dry installation.
Understand the installation procedure and any additional consumables you will need, such as RTV, threadlocker, or replacement head bolts. Proper torque sequence and cylinder head flattening or resurfacing needs should factor into the decision to ensure long-term sealing.
Durability and Resistance to Fluids and Heat
Engines expose gaskets to hot oil, antifreeze, and fuel vapors, along with high combustion temperatures. Choose materials and designs rated for the Eclipse engine's operating temperature and chemical exposure. Features such as heat-resistant coatings and corrosion-resistant metal layers improve longevity.
Durability considerations affect whether a kit is appropriate for daily-driven vehicles versus performance or high-mileage rebuilds. Expect longer service life from components engineered for thermal stability and chemical resistance.
How We Chose the Best Mitsubishi Eclipse Engine Gasket Set
To narrow the field we focused on kits specifically intended for the Mitsubishi Eclipse engine platform and verified that each listing provided complete cylinder head sealing and the core gaskets required for typical repairs. Primary evaluation criteria included gasket material and construction, the scope of included gaskets and seals, and stated fitment accuracy for the Eclipse engine.We also examined durability-related features such as multi-layer head gasket construction, coated sealing surfaces, and inclusion of critical seals like valve cover and oil pan gaskets. Ease of installation was assessed by considering whether kits include necessary small seals, dowel pins, or alignment components. Compatibility documentation was reviewed to confirm each kit matched the target engine's bore and head configuration.Exclusions: we excluded kits that lacked essential head sealing components, generic universal gasket packs without vehicle-specific fitment data, and any listings that did not document material specifications. The final list prioritizes comprehensive, vehicle-specific sets that minimize the risk of repeat disassembly.
Our full evaluation process is outlined in our review methodology.
FAQ
How do I know which gasket set I need for my Mitsubishi Eclipse?
Identify the repair scope first. For a full engine rebuild choose an overhaul kit that includes head, intake, exhaust, valve cover, oil pan, and timing cover gaskets. For targeted repairs, select a head gasket replacement kit or specific seal kit that lists compatibility with your engine code and year.
Can I reuse old gaskets when replacing the head gasket?
Reusing old gaskets is usually not recommended because compressed sealing materials rarely reseal effectively. Critical gaskets exposed to combustion and oil should be replaced to ensure proper sealing and avoid future leaks. Inspect mating surfaces and replace any gaskets showing deformation or damage.
Do I need special tools or parts when installing a complete gasket kit?
Basic mechanics will need standard hand tools, torque wrenches, and appropriate sealants or thread treatments specified by the service procedure. Some repairs may require specialized tools such as an engine hoist, head bolt torque-angle gauge, or surface gauge if resurfacing is necessary. Verify the installation instructions before starting.
What causes a gasket to fail after installation?
Common causes include improper surface preparation, uneven bolt torque or incorrect torque sequence, warped or cracked mating surfaces, and use of incompatible sealants. Material degradation from overheating or chemical attack can also lead to premature failure. Correct installation practices and using vehicle-specific gaskets reduce these risks.
How long does a properly installed gasket set usually last?
Lifespan varies with driving conditions, engine maintenance, and material quality. On a well-maintained engine using appropriate materials and correct installation, gaskets often last many years or tens of thousands of miles. High-heat or abused engines may see shorter service intervals, so monitor for leaks and performance changes.
Conclusion
Prioritize kits that match the Mitsubishi Eclipse engine specifications and include the full set of gaskets required by your repair. Focus on material quality, accurate fitment, and completeness of included seals to reduce the chance of revisit repairs.Balance durability against the scope of the job: choose an overhaul kit for complete engine work or a targeted replacement kit for specific issues. Proper surface preparation and correct installation practices are as important as the kit you select.
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