Derale Low Profile Pressure Relief Sandwich Adaptor 3/8" NPT Ports and 3/4”-16 Filter Thread 25770 Holden Will fit most 4 BBL

Will fit most 4 BBL carburetors with a 5-1/8” neck including Holley

This Tube & Fin Transmission Cooler features ½” copper tubing expanded into aluminium cooling fins and includes embossed turbulators which serve to agitate fluid for maximum heat transfer

No PCV facility

US Police Wailer Siren

Wire Jacketing: High-density silicone

Derale Low Profile Pressure Relief Sandwich Adaptor 3/8" NPT Ports and 3/4”-16 Filter Thread 25770 Holden Will fit most 4 BBLOnly 1 thick, this high quality aluminium low profile sandwich adaptor features 3 8 NPT ports and pressure relief valve and provides external oil lines to run an engine oil cooler while dropping the factory oil filter only 1 lower than stock. Designed to be used on engines with 3 4 16 filter thread. Specifications Sandwich adaptor type: K Adaptor thread size: 3 4 16 Adaptor O ring size: 2 1 2, 2 3 4 Adaptor thickness: 1 Adaptor inlet size: 3 8 NPT