Mazdaspeed 3/6 Gravedigger Returnless Port Injection Fuel Line Kit

On this page you’re looking at the returnless fuel line kit made by Graveyard! Some people look to piece together their own fuel systems, but don’t have the necessary tools to make and assemble their fuel lines. We have gone ahead and taken care of that for our customers.

This kit is designed to run from the low side fuel line by the firewall, to a port injection rail, and back to the HPFP.  We use high quality PTFE Line, which has a lifetime use for pump gas, and E85!

Included is the following:

• 2 x 5/16 Quick Connect Fittings
• 2 x -6AN to -6ORB Fittings (CS/Damond Spacer Rails) - Optional 10AN for JMF V2
• 1 x Rail to HPFP Line
• 1 x Factory Line to Fuel Rail Line

If you are going to run a CPE Havoc Intake Manifold, you will need a -8ORB fitting which we can substitute at no additional cost. Just reach out to us before placing your order.

🔧 Installation Difficulty: Basic
⏱️ Time Required: 30 minutes
🔧 Tools Needed: Basic hand tools
⚠️ Prerequisites: Requires aftermarket port injection fuel rail
💡 Quick installation for modified fuel systems

Email sales@graveyardperformance.com for any question you may have.

If you are looking for a full kit for your Mazdaspeed, click here