DESCRIPTIONBillet Performance Products plenum spacer adds 12mm of spacing to Nissan S14 and S15 SR20DET intake setups while sealing with O-rings on both sides.It is a practical intake-side upgrade for workshop builds that need extra plenum clearance, cleaner sealing or a fresh manifold service during an engine refresh. Because it uses O-rings rather than factory gaskets, it helps simplify the install and gives a tidy finish when the plenum is apart.This spacer works naturally in SR20 builds that already use upgraded intercooler piping, larger throttle hardware, custom fuel rails or other intake system changes.FEATURES MPN: BPP2510 Engine fitment: Nissan SR20DET S14 / S15 Thickness: 12mm Sealing: O-rings on both sides Gasket requirement: No factory gaskets required Finish: Black anodised Manufacture: Made in Australia TYPICAL APPLICATIONS SR20DET intake manifold refreshes S14 and S15 plenum spacing upgrades Street, drift and track builds needing extra intake-side clearance Engine bays running custom fuel rails or related intake hardware FITMENT NOTES Designed for Nissan S14 / S15 SR20DET plenums Adds 12mm spacing, so check throttle body, piping and bonnet clearance on your setup O-rings seal both sides of the spacer and replace the need for factory gaskets Best installed with the plenum removed so sealing surfaces can be checked properly