QA1 Proma Star Twintube Double Adjustable Shock - 15.00 in Compressed / 23.75 in Extended - 2.00 in OD - Threaded 23011407 MSD answers with a new

MSD answers with a new injection molded spark plug wire boot that reaches down to securely connect the wire to the spark plug

Some race versions have machined grooves to reduce cavitation at high RPM (grooves slightly reduce pressure at idle)

The updated Fuel Pump Booster is an easy way to maintain the proper fuel pressure on your car after adding a power adder such as a turbo or supercharger

it is a suitable upgrade from Bi-Metal engine bearings

1977-1980 Buick Estate Wagon

QA1 Proma Star Twintube Double Adjustable Shock - 15.00 in Compressed / 23.75 in Extended - 2.00 in OD - Threaded 23011407 MSD answers with a newQA1's Proma Star Coil Overs help you gain the benefits of coil over shocks on a huge range of vehicles. Building a custom chassis or suspension components? Can? t find direct fit options for your vehicle? These are for you. Available with 3" to 9" of stroke and single or double adjustable valving, QA1'shocks instantly upgrade ride quality and performance. The shock and included hardware kit provide quick and easy ride height adjustability to get the