-9%
Cometic Honda K20C1/K20C4 .042in HP Cylinder Head Gasket - 88mm Bore Cometic Gasket CGSC14021-042
Click to zoom in

Cometic Honda K20C1/K20C4 .042in HP Cylinder Head Gasket - 88mm Bore

CGSC14021-042
191070576257
Head Gaskets
3 Units In Stock - Ships Next Business Day
$ 107.24 $ 96.52
$ 96.52

SKU: C14021-042 | UPC: 191070576257

Cometic Honda K20C1/K20C4 .042in HP Cylinder Head Gasket - 88mm Bore Fits 2017-2021 Civic Type R Accord RDX

Upgrade your Honda K20C1 or K20C4 engine with the Cometic .042in HP Cylinder Head Gasket featuring an 88mm bore. This multi-layer steel gasket delivers reliable sealing for high-performance turbocharged applications in 2017-2020 Honda Civic Type R, 2018-2020 Honda Accord 2.0T models, and 2019-2021 Acura RDX. It handles elevated pressures and temperatures common in boosted builds while maintaining precise combustion chamber integrity.

Key Features

  • Multi-Layer Steel Construction: Three stainless steel layers with a flexible expanded metal core resist high cylinder pressures and prevent blowout in performance engines.
  • .042in Thickness: Provides ideal compressed volume for high-performance setups with increased bearing clearances and boosted power levels.
  • 88mm Bore Diameter: Matches K20C1/K20C4 cylinder dimensions for perfect alignment and sealing in turbocharged 2.0L engines.
  • High-Pressure Combustion Seal: Pre-flattened fire ring ensures gas-tight seal under extreme boost and heat cycles.
  • Precision Manufacturing: Laser-cut layers and pressure-bonded assembly deliver consistent fit and durability for racing or street use.

Product Notes

  • Verify engine code K20C1 or K20C4 prior to installation.
  • Clean mating surfaces thoroughly for optimal sealing performance.
  • Packaged flat in protective envelope for damage-free delivery.

Installation Notes

  • Professional installation recommended.
  • Torque head bolts to Honda factory specifications in sequence.
  • Requires MLS-compatible head and block surfaces. no resurfacing needed if flat within spec.

This Part Fits

Year Make Model Submodel
2019-2020 Honda Civic Sport
2017-2020 Honda Civic Type R
2019-2021 Acura RDX Base
2021 Acura RDX PMC Edition
2019-2021 Acura RDX SH-AWD
2018-2020 Honda Accord EX-L
2018-2020 Honda Accord Sport
2018-2020 Honda Accord Touring
2017-2018 Honda Civic EX
2017-2020 Honda Civic LX
2017-2018 Honda Civic LX-P

Why Choose Cometic?

  • Trusted by professional race teams for decades in high-stakes competition.
  • MLS gaskets built to endure extreme heat and pressure in turbo applications.
  • Every gasket features exact OEM bore sizing with performance enhancements.

Frequently Asked Questions

  • Q: Does this gasket fit 2017-2020 Honda Civic Type R K20C1 engines?
    A: Yes, it is specifically designed for K20C1 and K20C4 engines with 88mm bore including Civic Type R models.
  • Q: What material is used in this head gasket?
    A: Multi-layer steel with three 301 stainless steel layers and a flexible core for superior durability under boost.
  • Q: What is the warranty on Cometic gaskets?
    A: Backed by Cometic's limited warranty covering manufacturing defects when installed correctly.

Shipping & Handling

  • Method: UPS Ground or USPS Priority
  • Availability: In stock - ships same or next business day
  • Packaging: Protective flat envelope 12in x 9in x 0.5in
  • Weight: 0.4 lbs

Request For Information

Have questions about ? Fill out the form below and we'll get back to you by the next business day.
Cometic Gasket

Cometic Gasket

Cometic Gasket produces precision-machined engine sealing components used by professional engine builders and race teams worldwide. MLS head gaskets, intake gaskets, and complete engine gasket sets from Cometic are engineered to hold seal under the elevated cylinder pressure and heat cycling that OEM gaskets cannot always survive in high-performance applications.Popular UpgradesCometic MLS (multi-layer steel) head gaskets are the most-requested upgrade for turbocharged, supercharged, and naturally aspirated builds where cylinder pressure exceeds the limits of OEM composite gaskets. Available in bore sizes and thicknesses calibrated to manage compression ratio, Cometic MLS head gaskets are a standard specification for any serious engine build. Intake manifold gaskets, exhaust gaskets, and cam cover sets round out the range for complete engine assembly work.Why use Cometic MLS head gaskets over OEM?Cometic MLS head gaskets use multiple layers of embossed stainless steel that create a ...

View Cometic Gasket Products
Engine

Engine

This engine parts collection covers oil catch cans, thermostats, thermostat housings, radiator components, coolant accessories, engine covers, fuse box covers, cap covers, throttle bodies, supercharger pulleys, idler pulleys, tensioner pulleys, and engine bay dress-up parts for trucks, SUVs, muscle cars, boosted builds, high-horsepower street cars, and performance vehicles that need better reliability, cooling, airflow, oil control, and under-hood styling. The collection is particularly strong for Dodge Challenger, Charger, Durango, Jeep Grand Cherokee Trackhawk, and Ram TRX platforms running 6.2L Hellcat, 6.4L HEMI, and 5.7L HEMI engines, where oil catch can and cooling upgrades address known OEM weaknesses in the PCV and thermal management systems. Import performance platforms including GM LS-based builds, Chevrolet Camaro, and Corvette applications are also represented through Mishimoto, CSF, and ZPE GripTec product lines. Builders who invest in engine bay organization and reliab...

View Engine Products
Head Components

Head Components

This collection covers cylinder head components including head gaskets, head studs, and complete head assemblies for performance engine builds and high-output applications, serving vehicle owners and builders who need reliable components for maintenance, restoration, or performance enhancement. Arp head studs, cometic head gaskets, and edelbrock or afr cylinder heads are foundational brands in performance cylinder head work, providing buyers with the confidence that comes from sourcing from recognized suppliers with documented fitment data. Proper head bolt torque sequence and head gasket compression thickness selection directly affect combustion sealing integrity and engine longevity, and selecting the correct specification for the specific application is the most important step before any installation. Whether the goal is restoring OEM function, addressing a worn component, or improving beyond factory performance, this collection addresses each need with confirmed-fit parts. Popul...

View Head Components Products
Head Gaskets

Head Gaskets

This collection covers cylinder head components including head gaskets, head studs, and complete head assemblies for performance engine builds and high-output applications, serving vehicle owners and builders who need reliable components for maintenance, restoration, or performance enhancement. Arp head studs, cometic head gaskets, and edelbrock or afr cylinder heads are foundational brands in performance cylinder head work, providing buyers with the confidence that comes from sourcing from recognized suppliers with documented fitment data. Proper head bolt torque sequence and head gasket compression thickness selection directly affect combustion sealing integrity and engine longevity, and selecting the correct specification for the specific application is the most important step before any installation. Whether the goal is restoring OEM function, addressing a worn component, or improving beyond factory performance, this collection addresses each need with confirmed-fit parts. Popul...

View Head Gaskets Products
Military & First Responder Discounts

Military & First Responder Discount Program

Black Ops Auto Works proudly honors active duty military, veterans, National Guard, reserves, police officers, firefighters, and EMTs with an exclusive 5% discount on all performance parts and carbon fiber upgrades. Verify instantly and start saving today.

Learn More & Apply

Your cart

×