10 Best Cometic Head Gasket 2026

⚡ Quick Verdict

📋 How We Evaluated

Evaluation focused on gasket match quality, including bore diameter and compression thickness, and on build details such as multi-layer steel and coating materials. Performance expectations centered on MLS sealing behavior, resistance to leakage, and compatibility with proper torque procedures.

Value and user suitability were inferred from listing specificity and typical Amazon rating signals, but most products lacked rating data, so fit and construction details drove scoring.

Cylinder Bore	3.937 in
Compression Thickness	.030 in
Construction	MLS (Multi-Layer Steel)
Coating and Technology	Viton outer coating with LCE load control embossments

What We Found

Cometic Gasket Head Gasket – MLS – 3.937in. Bore .030in. C9894 emphasizes the technical elements that drive MLS reliability. The listing explains premium fuel-resistant materials engineered to resist creep, cracking, and brittleness over time.

It also highlights MLS sealing behavior using LCE load control embossments to promote even torque distribution and reduce bore distortion. The outer layers use Viton coating on both sides, aimed at harsh sealing environments and demanding surface finishes.

This is a made-in-the-USA MLS option, with the included explanation focusing on why it seals rather than only what it fits. With a 3.937 in bore and .030 in compression thickness called out, selection stays precise for builds requiring that geometry and thickness.

Overall, the provided details strongly support the gasket’s sealing design philosophy.

Who It’s For

This gasket suits builders who want an MLS head gasket selected by bore and compression thickness, particularly when long-term resistance matters. It fits performance builds and rebuilds where sealing stability across heat cycles is critical, including applications with demanding surface finishes.

The LCE and Viton-focused description helps buyers who prefer documented sealing technology over generic product claims. Buyers should still match the exact 3.937 in bore and .030 in compression thickness to the engine’s requirements, then follow MLS torque procedures for best results.

MLS Compression Thickness	.030 in
Cylinder Bore	84 mm
Engine Fitment	Honda B16A2/B16A3/B17A1/B18C1/B18C5
Design Intent	Original part specifications

What We Found

Cometic Gasket C4188-030 targets Honda B16A2/B16A3, B17A1, and B18C1/B18C5 applications with an 84mm bore and a .030″ MLS compression thickness. The listing highlights design intent to meet original part specifications, aiming for exact fitment and original replacement behavior.

As an MLS gasket, it uses multi-layered steel construction for stable sealing when installed with proper surface preparation and correct torque steps. Compared with generic gaskets, this model’s tight vehicle targeting and thickness callout reduce the risk of mismatched compression.

It also emphasizes trouble-free, consistent performance, which aligns with MLS’s reputation for maintaining sealing under heat cycles. The product packaging details support straightforward one-pack replacement.

Who It’s For

This gasket suits Honda owners restoring or upgrading B-series VTEC engines where an 84mm bore and .030″ thickness match factory-like sealing goals. It fits situations like replacement after teardown, refreshing an aging track setup, or correcting symptoms from a previous gasket failure.

Proper installation matters, especially on surface finish and torque sequence. For buyers seeking a direct replacement pathway and clear vehicle specificity, it offers a dependable starting point without overcomplicating selection.

Engine Fitment	Honda F20B 2.0L
Cylinder Bore	86 mm
Compression Thickness	.027 in
Coating and Construction	Stainless steel embossed layers with Viton outer coating

What We Found

Cometic Gasket C4634-027 targets a specific Honda F20B 2.0L application with 86mm bore and .027″ thickness for 97-01 use. The listing explains construction: multiple embossed stainless steel layers with outer layers utilizing a Viton rubber coating.

Stainless steel provides increased strength, rebound characteristics, and corrosion resistance, which can matter during long-term heat exposure. The USA manufacturing claim adds confidence for buyers who value domestic production. At .027″ thickness, it suits builds where thinner compression targets match factory specs or build calculations.

The detailed fitment description helps reduce selection error compared with generic listings. Overall, it presents a well-explained MLS gasket with coatings and material rationale, rather than only fitment text.

Who It’s For

This head gasket best suits owners of Honda F20B 2.0L engines requiring 86mm bore and .027″ thickness for 97-01 applications. It fits rebuilds after head removal, cooling system recovery work, and performance upgrades that retain the original bore and sealing volume targets.

The stainless and Viton-focused construction description helps builders who prioritize corrosion resistance and sealing stability. Buyers gain value when their engine spec exactly matches the 86mm/.027 pairing, because correct dimensions drive MLS sealing behavior.

Application	1990-2001 Acura Integra
Cylinder Bore	81 mm
MLS Compression Thickness	.030 in
Engine Fitment	B18A1 and B18B1

What We Found

Cometic Gasket Automotive C4238-030 is described as an MLS head gasket for 1990-2001 Acura Integra applications with an 81mm bore and .030″ MLS thickness. The listing directly connects the gasket to B18A1 and B18B1 engines, which helps prevent accidental mismatches during rebuilds.

The MLS approach aims for stable sealing by using multi-layer steel designed to handle clamp load and heat cycles when installation follows proper procedures. It also fits the “exact fitment” intent commonly associated with Cometic replacements, which helps reduce friction versus universal gaskets.

Packaging details are included only as part of general product formatting, but the technical differentiator here remains the 81mm bore and thickness pairing. Overall, it presents as a purpose-built replacement for a well-defined Integra group.

Who It’s For

This gasket best serves Acura Integra owners rebuilding 1990-2001 B18A1 or B18B1 engines. It fits scenarios like timing and head service, cooling recovery after overheating, or planned performance refresh where new sealing reliability matters.

The 81mm bore and .030″ thickness specification makes it ideal when the build calls for that exact compression target. Buyers who want a clear vehicle window and MLS sealing behavior should find this simpler than mixing bore options.

MLS Compression Thickness	.030 in
Cylinder Bore	81.5 mm
Engine Fitment	Honda B16A2/B16A3/B17A1/B18C1/B18C5
Product Type	GASKETS

What We Found

Cometic Gasket C4232-030 provides MLS head gasket selection for Honda B16A2/B16A3/B17A1/B18C1/B18C5 with an 81.5mm bore and .030″ compression thickness. The listing emphasizes direct engineering for those applications, which helps buyers avoid choosing the wrong bore size on similar engines.

MLS multi-layer steel construction supports uniform sealing across the gasket surface when clamp load remains within spec. The product information also includes package dimensions and weight, but the functional differentiator stays in the 81.5mm/0.030 pairing.

Compared with 84mm variants, this model suits builds requiring the smaller bore target, such as specific engine tolerances or parts selection that deviates from common 84mm packages. It positions for trouble-free, consistent performance consistent with Cometic’s MLS lineup.

Who It’s For

This gasket suits Honda owners whose engine application calls for 81.5mm bore and .030″ MLS thickness, including select B16/B17/B18 variants. It works well for rebuilds after head removal, especially when surface preparation and torque sequence follow MLS requirements.

Builders with mixed or corrected bore selections will appreciate the narrower spec match. If the engine truly aligns with 81.5mm, the value proposition centers on predictable sealing behavior rather than universal fitment.

MLS Compression Thickness	.030 in
Cylinder Bore	84 mm
Fitment Focus	VTEC B16/B17/B18
Quantity	1

What We Found

Cometic Gasket C4188-030 MLS .030 thickness targets Honda VTEC B16/B17/B18 families with an 84mm bore, packaged for straightforward installation as one head gasket. The listing provides dimensional package details, but the key value sits in the gasket’s MLS .030″ compression thickness and bore match.

MLS multi-layer steel construction aims to distribute clamping load across the sealing surface for stable sealing over repeated heat cycles. The inclusion of VTEC B-series range language and the explicit 84MM bore reduces ambiguity during selection. It also suggests the gasket focuses on consistent performance rather than broad, universal coverage.

For buyers choosing within a narrow engine spec window, these details help avoid mismatched thickness or bore that can cause leakage.

Who It’s For

This product fits shoppers who already know their engine code and need an 84mm bore MLS gasket with .030″ compression thickness for Civic and VTEC swaps. It suits rebuilds where deck surfaces are fresh or reconditioned, and where the correct torque procedure can be followed carefully.

It also works for routine replacement during engine refresh on supported B16/B17/B18 VTEC variants. Buyers who want clear spec alignment and a simple one-gasket solution will likely value this listing.

Cylinder Bore	82 mm
Compression Thickness	.051 in
Engine Fitment	Honda B16A2/B16A3/B17A1/B18C1/B18C5
Construction	MLS Cylinder Head Gasket

What We Found

COMETIC Head Gasket – C4168-051 targets Honda B16A2/B16A3/B17A1/B18C1/B18C5 with an 82mm bore and .051″ MLS cylinder head gasket thickness. The listing provides key bore and thickness specs, which helps buyers select the correct compression volume when thicker MLS sealing is required.

MLS construction supports stable sealing when installed correctly with proper torque procedures and surface preparation. Compared with the .030″ variants for other builds, the .051″ thickness suggests suitability for applications with deck changes, specific tuning targets, or requirements for additional compression.

However, the listing block lacks further explanation of coatings or embossing technology, so the confidence rests mainly on the stated dimensions. It positions as a direct MLS replacement for the specified Honda family, where wrong thickness can cause leakage or improper clamp load.

Who It’s For

This gasket suits Honda B16/B17/B18 applications that require 82mm bore and .051″ MLS thickness, not just any B-series rebuild. It fits engine refresh jobs where deck height changes or build specifications call for thicker compression. It also fits performance and swap scenarios where component choices dictate the sealing volume needed.

Buyers should confirm bore measurement and required compression thickness before ordering, since the .051″ spec differs significantly from common .030″ selections.

Cylinder Bore	3.910 in
Compression Thickness	.040 in
Construction	Multi-Layered Steel
Application Family	GM LS-Series

What We Found

Cometic C5475-040 targets GM LS-series applications with a 3.910 in bore and .040 in compression thickness. It uses multi-layered steel construction, designed for head sealing performance in demanding environments. The listing emphasizes the key mechanical specifications, with bore diameter and compression thickness as the primary selection points.

That matters on LS builds where cylinder head alignment and deck surfaces influence clamping requirements and resulting sealing. The gasket provides a straightforward, spec-forward option rather than broad vehicle compatibility. With .040″ compression thickness, it supports builds that call for thicker MLS sealing volume.

While the listing does not mention Viton coatings or embossing details in this specific product block, it still aligns with Cometic’s MLS category approach focused on even sealing behavior.

Who It’s For

This product suits GM LS-series engine builds that require a 3.910 in bore and .040 in compression thickness. It fits street performance cars, track projects, and rebuilds where head removal demands a properly matched MLS gasket.

Owners should pair it with accurate deck measurements and correct torque procedures to realize its sealing intent. Buyers seeking a spec-driven LS head gasket replacement will value the clear bore and thickness listing, provided those dimensions match the build requirements.

Model	C5245-040
Fit Type	Vehicle Specific
Compression Thickness Indication	.040 in
Durability Messaging	Ultimate durability

What We Found

Cometic Gasket C5245-040 is presented as a vehicle-specific MLS cylinder head gasket built for ultimate durability. The listing emphasizes trouble-free, consistent performance and uses general material-quality language rather than detailed sealing technology in the provided block.

It includes a package weight of 1.0 pounds and identifies the fit type as vehicle specific. However, critical selection specs such as bore diameter and compression thickness are not fully detailed beyond the “040” suffix in the product name.

The “right for your vehicle and lifestyle” wording reinforces broad marketing rather than measurable engineering details here. As a result, buyers must consult the product’s full catalog details to confirm bore and thickness alignment. Still, the focus on durability and consistency matches Cometic’s MLS category positioning for leak-resistant replacement use.

Who It’s For

This gasket suits buyers who already selected the correct Cometic model number for their exact vehicle application. It fits rebuilds and maintenance jobs where a vehicle-specific MLS gasket simplifies ordering and reduces the chance of wrong-bore selection.

Because the provided details omit bore and compression specifics, it best matches shoppers comfortable cross-checking fitment. It also suits restoration-minded owners who want durable sealing performance and straightforward replacement without experimenting across sizes.

Product Model	C4231-030
Sealing Claim	No Leaks
Construction Type	MLS
Material Focus	High Quality Materials

What We Found

Cometic Head Gasket C4231-030 positions as an MLS head gasket with an emphasis on longevity and leak prevention, stating it is made of high-quality materials and built to last. The listing’s standout claim is “No Leaks,” which reflects the sealing goal rather than a verifiable metric in the provided data.

It names the C4231-030 identifier but does not include bore size, compression thickness, or explicit engine families in the supplied details. Still, the product name indicates an MLS head gasket intended for cylinder head sealing replacement.

Without those critical compatibility parameters, buyers must rely on the product catalog details not shown here. In this context, the listing prioritizes durability messaging and straightforward replacement intent.

Who It’s For

This option suits buyers who already confirmed compatibility via the manufacturer’s full catalog data for the C4231-030 application. It can fit repair scenarios where a known-compression MLS gasket is already selected for the engine’s bore and clamp requirements.

It also suits those prioritizing materials quality messaging when community ratings are unavailable. Because the provided details omit bore and engine range, value comes mostly from verified cross-referencing before purchase.

What to Look For Before Buying

Choosing a Cometic head gasket starts with matching bore diameter and compression thickness to the engine’s build requirements. Next, prioritize MLS construction quality, coating material, and sealing technology like load control embossments when available.

Finally, confirm fitment for your exact engine code and verify installation readiness, because MLS performance depends on surface finish and torque procedure.

Check Match Bore And Compression Thickness Exactly

Verify bore size from engine spec or measured cylinder diameter after machining. Confirm compression thickness, such as .030 in or .040 in, matches the build deck height and clamp expectations. Avoid assuming one gasket thickness fits all similar engines, even within the same family.

When uncertain, check the OEM spec or your machinist’s deck notes.

Value Prioritize MLS Construction And Real Sealing Materials

MLS gaskets typically outperform older designs when properly installed. Look for multi-layer steel plus outer coatings such as Viton when the listing provides details. Coatings can improve resistance to harsh sealing environments and long-term wear. Value increases when the listing explains why sealing works, not only that it “won’t leak.”

Rating Use Amazon Ratings As A Tie-Breaker, Not The Only Metric

If ratings exist, analyze the distribution for repeat leak complaints or mismatch returns. When rating data is absent, rely more heavily on spec clarity and construction details. Listings that state technology like LCE load control embossments often signal better engineering transparency.

Always cross-check engine code compatibility even when ratings look strong.

Verify Plan For Correct Installation Conditions

MLS gaskets demand clean, smooth mating surfaces and correct torque steps. Use a factory-style torque sequence and re-check torque when the gasket instructions specify. Inspect block and head for warping or uneven surfaces, since MLS cannot compensate for severe distortion. Confirm coolant and oil passages stay unobstructed during assembly.

Frequently Asked Questions

What does MLS mean for a Cometic head gasket?

MLS stands for Multi-Layer Steel, designed to seal through layered steel construction under clamp load. It typically performs best with precise surface preparation and correct torque procedures. Many MLS variants also use coatings and embossing features to maintain sealing across heat cycles.

How important are bore size and compression thickness when replacing a head gasket?

Bore size and compression thickness control how the gasket compresses and how sealing concentrates around combustion and coolant areas. Even small differences, like 81.5mm versus 84mm or .030″ versus .040″, can cause leakage or abnormal bore distortion. Always match the gasket to the engine’s actual build specs.

Do Viton-coated outer layers improve head gasket reliability?

Viton-coated outer layers can improve sealing durability in harsh environments by resisting degradation that leads to leakage. The benefit depends on correct fitment, proper torque, and clean surfaces. When a listing specifies Viton, it usually indicates attention to long-term sealing needs.

Why do some MLS gaskets mention LCE load control embossments?

LCE load control embossments aim to distribute clamp load more evenly across the sealing surface. That can reduce uneven bore distortion and support better ring and piston seal conditions. Buyers benefit from this detail when building for higher stress or when sealing uniformity matters.

What installation steps matter most for an MLS head gasket?

Surface cleanliness and finish rank highest, along with correct torque sequence and specifications. Use proper gaskets seating, avoid debris on mating surfaces, and confirm fasteners meet condition requirements. If deck work occurred, verify the gasket thickness matches the resulting clamp setup.

🎯 Final Verdict

Cometic Gasket Head Gasket – MLS – 3.937in. Bore .030in. C9894 earns the top pick for its LCE load control embossments and Viton-coated sealing layers. Those design details explain reliability rather than only promising it. The runner-up, Cometic C4188-030 for Honda B-series engines, delivers strong spec-focused fitment for common rebuilds.

Confirm bore and compression match your build, then choose the gasket with the clearest sealing technology story.