BLOX Racing BXFL-00500-81 MLS Head Gasket 81 mm for Honda B-Series

Vehicle Fitment

• Honda B-Series engines with 81 mm bore - fitment on many B16/B18 applications; verify engine block and bore size before installation
• Commonly used on Acura Integra (1990-2001), Honda Civic Si/Del Sol VTEC (mid-'90s), and select Honda CR-V B20 engines - see engine compatibility notes

Features

• Three-layer MLS (Multi-Layer Steel) construction for superior sealing and durability
• Designed for high-performance and high-pressure applications
• Coated with high-temperature, chemical-resistant polymer layer
• Teflon-coated surfaces for enhanced sealing and reusability
• Compresses to optimal thickness for consistent compression across head/block
• Ideal for LS/VTEC conversion kits and high-output builds
• Suitable as a performance OEM replacement gasket
• Precision manufactured for consistent bore and sealing surface alignment

Specifications

• Bore size: 81 mm
• Compressed operating thickness: ~0.030"
• Construction: 3-layer MLS head gasket
• Material: Multi-layer steel with polymer and Teflon coatings
• Engine family: Honda B-Series (B16, B18; verify specific sub-designations)
• Compatibility: Must match 81 mm bore block and head deck
• Application: Performance and OEM replacement use
• Not vehicle-specific - confirm engine before ordering

Included Components

• 1x MLS head gasket (81 mm bore)

Product Description

The BLOX Racing BXFL-00500-81 MLS Head Gasket is engineered for Honda B-Series engine enthusiasts and builders seeking a high-quality sealing solution for performance or OEM replacement applications. Constructed with three layers of precision-formed steel and coated with a high-temperature, chemical-resistant polymer plus Teflon finish, this head gasket provides exceptional sealing reliability under elevated combustion pressures and thermal cycling. It is an excellent choice for LS/VTEC conversion projects and tuned B-Series engines requiring consistent compression and durability.

Designed around an 81 mm bore size and ~0.030" compressed thickness, the gasket is suitable for many B16 and B18 engine applications found in vehicles like Acura Integra models from the 1990s to early 2000s, Honda Civic Si/Del Sol VTEC platforms, and select CR-V B20 engines. Always confirm that your block and head match the 81 mm bore measurement before installation, and ensure proper torque sequence and specification during assembly. This gasket offers a performance-oriented upgrade over stock head gaskets while maintaining dependable sealing characteristics for street and race builds.