1” Holley Squarebore 4-Hole Phenolic Carburetor Spacer Ignition & Electrical Bolt pattern diameter is –

Bolt pattern diameter is – as per OEM

Polished 6061-T6 billet aluminium retaining ring with bolt holes

These brackets fit both short and long water pump setups

Triumph 1974-on

1” Holley Squarebore 4-Hole Phenolic Carburetor Spacer Ignition & Electrical Bolt pattern diameter is –Phenolic material is renowned for its heat insulating properties, which results in a cooler and denser fuel mixture, which in turn produces more horsepower. Suitable for Holley Squarebore Carburettors. Includes: 1 x 1 Thick Phenolic 4 Hole Squarebore Carburettor Spacer 1 x Mounting stud with gaskets Carby spacer suits Carburettors using Holley Squarebore Style Base