Holley 108‑91‑2 blue non-stick metering block gasket (2‑pack). Designed for use with Holley carburetor models 2300, 4150, 4160, 4165 and 4175. Made from fiber composite material (~0.063 in thick), compatible with gasoline, alcohol, E‑85.

These gaskets provide a high‑quality, leak‑free seal between the carburetor body and metering blocks. Not compatible with accelerator pump transfer tube (primary side only for 4160). Brand new, OEM Holley performance parts.