Quadstar Tuning will be CLOSED from July 10th to July 26th, 2020. Any emails, messages or orders placed during this time will be answered and processed beginning July 27th. During this time, we will be restructuring to serve you better and some product listings may change. We'll be coming back strong with multiple new product releases. As always, thank you for your support!!!


Fuel Inlet Upgrade for DS Pumps

Quadstar Tuning LLC

  • $34.99


DS4 injection pump 3/8" fuel supply upgrade.  This replaces the restrictive factory 1/4" inlet fitting that screws into the regulator assembly and allows you to run new fuel lines. 

Now featuring 100% aluminum construction! Our adapter fittings are milled from virgin aluminum stock, specifically for this application.

Both fittings are full-flow style for maximum performance and the hose barb is a push lock style. Does not require an unattractive hose clamp or expensive braided hoses for this low pressure system.

If you want to use a stock FFM (fuel filter manager), simply order two sets of 90* fittings!  You can drill/tap your FFM and screw in the same fitting that goes on the injection pump and run a 3/8" connecting hose up and over the plenum to attach.

You can also order the 120* style if you want to route the hose under the lower intake plenum similar to where the factory supply line was.


We Also Recommend