Through testing we have discovered that some twin CP-3's kits require lower feed pressures (15 to 20 psi) to avoid high rail pressure codes at idle. Now we have the answer for maximum flow when running lower feed pressures. The GDP Big Line Kit for trucks with twins CP-3's!
The factory hard lines from the fuel filter to the injection pump is less than 1/4" in diameter. Our system replaces the restrictive banjos and factory hard line with our custom stainless adapters and full 3/8" line! Check out the photo above.
System includes stainless steel adapters, 90° PushLok fittings, Cummins seal washers, 3/8" hose, clamps and a billet aluminum "T" for adding your fuel pressure sender.
Note: Only for 5.9 litre applications!
Note: If your truck is equipped with the "Jacobs" brand exhaust brake and engine mounted vacuum pump please contact us.
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