AN Y Block Fitting AN4 AN6 AN8 AN10, Billet Y Splitter, Male

Split one line into two. Popular for twin carbs, dual-feed fuel rails, twin turbo oil feeds and catch can breathers. Machined from a solid billet block.

• Sizes: AN4, AN6, AN8, AN10, all three ports the same size
• Male AN flare on every port
• Billet aluminium

AN size chart

Frequently asked questions

Do AN fittings need thread tape or sealant?
No. The seal is made on the 37 degree flare, not the thread, so keep tape and sealant off the AN side. Only the NPT (tapered pipe) end of an adapter needs sealant.

How tight should AN fittings be?
Snug them up by hand, then about a quarter turn with a proper AN spanner. Aluminium fittings do not need much. Over-tightening can crack the flare.

What size is an AN6 fitting? Is 6AN the same as 3/8?
Yes. AN6 (also written -6 or 6AN) suits 3/8" (9.5 mm) hose or tube and uses a 9/16"-18 thread. The dash number is the size in sixteenths of an inch, so AN6 = 6/16 = 3/8".

Quality and warranty

• Made in China, precision CNC-machined from solid aluminium, not cheap cast or pot-metal fittings
• Tough anodised finish, clean threads and true 37 degree flares that seal properly
• 2-year repair or replacement warranty against defects in materials and workmanship, on top of your rights under Australian Consumer Law
• Sold and backed by Tucks Performance, an Australian-owned business. Not sure what you need? Send us a message

Delivery: ships direct from our supplier partner, usually 10 to 20 days.