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

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