Cometic C4312-060 MLS Head Gasket .060in 88mm for 2002-2007 Honda/Acura K20/K24

Vehicle Fitment

• 2002-2007 Acura RSX (Base, Type-S), 2002-2005 Honda Civic Si, 2003-2007 Honda Accord (DX, LX, EX, SE, EX-L), 2003-2006 Honda CR-V, 2003-2011 Honda Element - all with K20A1, K20A2, K20A3, K24A1 DOHC 2.0L / 2.4L inline-4 engines

Fitment Notes

• Does **not** fit newer K-series variants such as K20C or other updated blocks/heads unless matching OEM K20/K24 geometry exactly
• Heads and block mating surfaces must be machined flat; surface finish per Cometic MLS spec required for reliable sealing
• 2025 fitment unconfirmed; fitment confirmed through at least 2011 for Element, 2007 for most Accord/Civic/RSX/CR-V trims listed

Features

• Multi-Layer Steel (MLS) construction for superior sealing under high pressure and thermal cycling :contentReference[oaicite:0]{index=0}
• Compressed thickness of .060 inches (≈ 1.524 mm) for greater deck height, useful in rebuilt or modified engines :contentReference[oaicite:1]{index=1}
• Bore size of 88.00 mm, matching K20/K24 OEM bore dimension :contentReference[oaicite:2]{index=2}
• Outer embossed stainless steel layers coated with Viton (FKM) on both sides for high temperature (~250 °C / 482 °F) and chemical resistance :contentReference[oaicite:3]{index=3}
• Center shim/uncoated stainless steel layer to control thickness and strength :contentReference[oaicite:4]{index=4}
• No sealants needed; designed to seal dry when proper surface prep and installation torque are used :contentReference[oaicite:5]{index=5}
• Compatible with aluminum head-to-aluminum block and aluminum head-to-cast iron block combinations; designed to resist shearing and maintain clamp load across mixed material interfaces :contentReference[oaicite:6]{index=6}
• OEM crossover numbers included for reference: 12251-PRB-A01, 12251-PPA-004, 12251-PNC-003 :contentReference[oaicite:7]{index=7}

Specifications

• Bore Diameter: 88.00 mm :contentReference[oaicite:8]{index=8}
• Compressed Operating Thickness: .060 in (≈ 1.524 mm) :contentReference[oaicite:9]{index=9}
• Material: Multi-Layer Steel (MLS), outer layers stainless steel with Viton coating, inner shim layer uncoated stainless steel :contentReference[oaicite:10]{index=10}
• Engine Compatibility: K20A1, K20A2, K20A3, K24A1 (2.0L / 2.4L DOHC inline-4) :contentReference[oaicite:11]{index=11}
• Position: Cylinder Head Gasket, complete sealing of head to block across all 4 cylinders :contentReference[oaicite:12]{index=12}
• Number of layers: 5 total layers of steel (outer embossed, middle shim, etc.) :contentReference[oaicite:13]{index=13}
• Required installation: proper head-bolt torque, flat and clean mating surfaces; no retorque required post-installation per Cometic guidelines :contentReference[oaicite:14]{index=14}
• Fitment confirmed through 2011 for Element, through at least 2007 for most other models; 2025 unconfirmed :contentReference[oaicite:15]{index=15}

Included Components

• 1x Cometic MLS Head Gasket C4312-060

Product Description

The Cometic C4312-060 is a high-performance Multi-Layer Steel (MLS) head gasket specifically designed for Honda/Acura's K20/K24 DOHC 2.0L / 2.4L engine families. Its .060 inch compressed thickness (≈ 1.524 mm) provides extra deck height clearance, making it ideal for engines with modifications such as block surfacing, port work, or mild forced induction, while maintaining seal integrity. The bore size is OEM spec at 88.00 mm. Outer layers are embossed stainless steel coated on both sides with Viton for excellent heat and chemical resistance; the center layer is an uncoated shim of stainless steel. No additional sealant is required, provided the head and block are clean, flat, and properly torqued.

Fitment is confirmed for 2002-2007 Honda/Acura models using K20A1, K20A2, K20A3, K24A1 DOHC 2.0L / 2.4L engines, including RSX (Base, Type-S), Civic Si, Accord (DX, LX, EX, SE, EX-L), CR-V, Element trims listed above. It does **not** fit newer K-series variants like the K20C unless your block/head geometry matches the older K20/K24 OEM spec exactly. Installation requires proper surface preparation (flat surfaces, correct finish) and correct torque procedure. Fitment confirmed through 2011 for Element in some cases; for 2025 model years, fitment is unconfirmed.