Cometic C15203-051 MLX Cylinder Head Gasket for 2017-2018 Chevrolet Corvette LT1

Vehicle Fitment

• 2017-2018 Chevrolet Corvette Stingray (LT1 6.2L V8, RWD, NA)
• 2017-2018 Chevrolet Corvette Grand Sport (LT1 6.2L V8, RWD, NA)
• 2017-2018 Chevrolet Corvette Z06 (LT4 6.2L V8, RWD, Supercharged)

Fitment Notes

• Fits Gen-V LT1 and LT4 6.2L small block V8 engines only. Excludes other engine families.
• Bore size must be 4.150"; verify cylinder bore dimension before selecting.
• Compressed thickness is 0.051", suited for modest performance or when slight reduction in compression is acceptable.
• Symmetrical design - no specific orientation required.
• Confirmed fitment through 2018; 2019-2025 unconfirmed.

Features

• MLX (Multi-Layer Xtreme) multi-layer stainless steel construction for high durability.
• Five steel layers to better distribute clamping load and resist distortion.
• Embossed outer layers for improved sealing under high cylinder pressure.
• Viton coating on outer surfaces to enhance oil and coolant sealing and resist heat/corrosion.
• Designed to handle both naturally aspirated (LT1) and forced induction (LT4) use cases.
• No sealant required; intended for direct replacement with proper surface prep.
• High OEM and performance standard build quality - manufactured in the USA.
• Compatible with aluminum heads and block surfaces in LT1/LT4 platforms under standard + performance conditions.

Specifications

• Material: MLX multi-layer stainless steel
• Bore Size: 4.150 inches (≈ 105.41 mm) :contentReference[oaicite:0]{index=0}
• Compressed Thickness: 0.051 inches :contentReference[oaicite:1]{index=1}
• Number of Layers: 5 steel layers :contentReference[oaicite:2]{index=2}
• Orientation: None (symmetrical design) :contentReference[oaicite:3]{index=3}
• Applications: Gen-V LT1 & LT4 6.2L small-block V8s in Chevrolet Corvette 2017-2018 models :contentReference[oaicite:4]{index=4}
• Drivetrain: RWD (Corvette platform) :contentReference[oaicite:5]{index=5}

Included Components

• 1x Cometic C15203-051 MLX Cylinder Head Gasket

Product Description

The Cometic C15203-051 MLX Cylinder Head Gasket is built for high performance in Chevrolet's Gen-V LT1 and LT4 6.2L small-block V8 engines. With a 4.150" bore and .051" compressed thickness, it offers a solid balance between stock compression and added resilience under high pressures. Its five-layer MLX stainless steel construction, embossed with Viton coating, ensures exceptional sealing in demanding conditions whether naturally aspirated or supercharged.

Ideal for 2017-2018 Corvettes including the Stingray, Grand Sport, and Z06, this gasket is designed for direct replacement use - no specific orientation needed. Proper surface prep and verification of bore size are essential. Fitment is confirmed through 2018; extensions beyond that are not yet documented in official sources.