Description
Cometic MLS Head Gasket – 0.030 in Thickness
The Cometic C4232-030 is a multi-layer steel (MLS) head gasket engineered for high-performance sealing on Honda B-series engines. Constructed from multiple embossed stainless steel layers with a durable elastomer coating, this gasket delivers exceptional resistance to combustion pressure, heat cycling, and blowout compared to traditional composite or single-layer designs. MLS gaskets maintain even clamping force across the head and block interface, helping prevent leaks and maintain compression under demanding street and racing conditions.
At a compressed thickness of 0.030 inch, this gasket is commonly used to restore factory quench and surface geometry after head resurfacing or to fine-tune compression ratio in performance builds. The robust MLS design offers durability and repeatable sealing when paired with proper surface finishes and clamping hardware such as ARP head studs or upgraded head bolts.
Replaces
This gasket is a performance replacement for OEM Honda MLS head gaskets used on B-series engines, including part numbers such as 12251-P72-000 and equivalent factory gaskets with approximately 0.030 inch compressed thickness.
Fitment
Honda / Acura B-series engines including:
B16A / B16B
B17A
B18C (GSR and Type R variants)
Installation Notes
MLS head gaskets require properly finished, flat cylinder head and block surfaces. Follow manufacturer torque specs and sequence. Use of quality head studs is recommended for consistent clamping force in performance applications.
Part number
C4232-030
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