53mm High Performance Thermostat (160 Deg F) 1996-pontiac-firebird-esi1593369 This Spider base is intended

This Spider base is intended for use with "Conventional" 18-degree SBC heads on a standard deck engine block

Designed specifically for 1973-1987 Chevy & GMC C10 trucks equipped with a UMI 4-Link Suspension

The three-way adjustable SB054 gives you a 73%-125% increase in rate over the stock bar

with its on-car adjustability

High quality die-cast aluminum spin-on adapter with 1/2" NPT dual side ports

53mm High Performance Thermostat (160 Deg F) 1996-pontiac-firebird-esi1593369 This Spider base is intendedEdelbrock thermostats are designed to ensure consistent cooling in high performance applications. Feature a brass and copper valve assembly with a stainless steel body for durability. This 160 Deg F thermostat is a bolt on OEM style replacement that measures 53mm.