For customers looking for even greater flexibility with their custom builds, look no further than the PERRIN Fuel Rail Junction Block. Choose from fuel rails and junction blocks to create the fuel setup that is perfect for you and your needs.
The PERRIN Fuel Rail Junction Blocks make for a clean transition from OEM rubber hoses to your PERRIN Fuel Rails. Like the PERRIN Fuel Rails, the PERRIN Junction Blocks are threaded for male 9/16-18 fittings (-6 AN), utilizing an O-ring seal.
The PERRIN Fuel Rail Junction Block is threaded for male 9/16-18 fittings, utilizing an O-ring seal. These are the same as a typical -6 AN fitting with an O-ring seal, also referred to as ORB fittings. These fittings are widely available and in all shapes and colors--whatever suits your build.
All PERRIN Junction Blocks come with built-in phenolic spacers. These spacers insulate the junction blocks from the 200°F cylinder heads, this keeps fuel closer to its normal ambient temperature. These spacers reduce the temperature of the fuel upwards of 30°F.
PERRIN Junction Block bodies are precision CNC machined from 6061 billet aluminum with black anodized finish for corrosion protection and a clean looking finish. All ports are marked with "Feed" and "Return" for ease of installation.
The PERRIN Top Feed Fuel Rails incorporate large 0.520" inside diameter channels for maximum fuel flow. This allows for cars to run beyond 800 WHP safely and without inconsistent fuel flow to each cylinder.
Check them out here: Top Feed Fuel Rail DIY Kit
PSP-FUL-221BK = Top Feed Junction Block
PSP-FUL-222BK = Side Feed Junction Block
(1) PERRIN Top Feed Junction Block
(1) M8 x 20 Socket cap screws
Warranty, instructions, sticker
(2) PERRIN Top Feed Junction Block
(1) M8 x 20 Socket cap screw
Warranty, instructions, stickers
2002-2014 WRX - Yes
2007 STI Yes
2007-2012 Legacy GT - Yes
2007-2012 Outback XT - Yes
2006-2013 Forester XT - Yes
2005-2006 Saab 9-2X Aero - Yes
2004-2006 STI - Yes
2008-2020 STI - Yes
PERRIN Performance warrants to the original purchaser that all PERRIN products will be free from defects in material and workmanship within a sixty (60) month period from the date of purchase. *Some exclusions apply
WARNING: Cancer and Reproductive Harm
This product is legal in California only for racing vehicles which may never be used upon a highway. Check your local and federal laws prior to installation.
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