
Y Block Adapter
SKU: ADPT-Y-4AN-4AN
ECUs always ship FREE with Tuned By Shawn!
Manufacturer Limited Warranty

Y Block Adapter
Product details
Description
Splitting one feed into two rails should not require a machine shop.
Dual fuel rails, twin coolers, and split returns all start with the same problem: one line in, two lines out. The Finish Line Factory Y Block Adapter divides the flow in a machined block with a single inlet from 4AN, 6AN, 8AN, 10AN, 12AN, 16AN and paired outlets from 4AN, 6AN, 8AN, 10AN, 12AN, 16AN. Clean internal passages, three AN flare connections, zero fabrication. The split, solved in one part.
Benefits
- Threads engage square and glide home, no cross-thread roulette
- The flare lands with a solid, definite stop you can trust
- Both branches plumb symmetrically, so the system looks engineered rather than adapted
- Mounting the block instead of floating a tee makes the whole junction feel solid
Features
- Machined Y-block flow splitter with one inlet and two outlets
- Inlet sizes: 4AN, 6AN, 8AN, 10AN, 12AN, 16AN
- Outlet sizes: 4AN, 6AN, 8AN, 10AN, 12AN, 16AN
- All ports are male AN with 37 degree flare seats
- Suits fuel, oil, water, and air delivery
- Sold as a single block
The Details
A Y-block beats a bare tee whenever the junction needs to live somewhere specific: the block form factor mounts solidly and presents all three flares at workable angles. Seals metal to metal on the 37 degree AN flare, no sealant, no tape, ever. Size the branches for the flow they actually carry; a feed that splits to two rails commonly steps down one size per branch, keeping velocity sensible on both sides. Assemble each connection with an aluminum AN wrench backing up the block so hose end torque never twists the junction, and route both branch hoses with enough slack that engine movement pulls on neither. If space is tighter than a block allows, the FLF Straight Y Adapter does the same job in a slimmer package.
Kit Includes
- 1x Y Block Adapter (size per your selection)
Applications
- Inlet: 4AN, 6AN, 8AN, 10AN, 12AN, 16AN; outlets: 4AN, 6AN, 8AN, 10AN, 12AN, 16AN
- Common uses: dual fuel rail feeds, twin oil cooler splits, split return lines, dual catch can plumbing
- Mates to female AN hose ends and fittings in matching sizes
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
-
Shipping Information
Use this text to answer questions in as much detail as possible for your customers.
-
Customer Support
Use this text to answer questions in as much detail as possible for your customers.
-
FAQ’s
Use this text to answer questions in as much detail as possible for your customers.
-
Contact Us
Use this text to answer questions in as much detail as possible for your customers.
