It is a direct bolt on for designed to fit in the factory position on LS1/LS2 series engines (Holden Commodore VT to VE series) using all factory hardware including factory bracket
These valve covers not only dress up your engine but also offer essential functionality to keep your Big Block Chevy engine performing at its best
Our commitment to excellence shines through in every detail
Flow rate: 525 lph @ 13
Fits all RB30 and some SR20 with the threaded hole
Aeroflow 2 1 2 Alum Weld Bung And Cap AF460-40 350Z It is a direct bolt2 1 2" Billet Aluminium Weld On Filler with Raw Cap Billet Alloy Weld On Filler & Cap. Aeroflow Performance non vented filler caps are manufactured from 6061 T6 aluminium and are supplied with BUNA N (wide range of fuel and oils) and EPR (Nitro methane fuel O Ring seals. Available in 1", 1 1 2", 2", 2 1 2" & 3" diameters in Blue, Red, Black, Gold, Purple, Raw, Polished and Silver anodized finishes. Bore Size: 63. 5mm (2 1 2") Neck O. D.: 76. 2mm (3")