Radium IACV Spacer Kit - Nissan S14/15 (SR20DET)
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Radium IACV Spacer Kit — Nissan S14 / S15 Silvia (SR20DET)
This Idle Air Control Valve (IACV) Spacer Kit is designed for the SR20DET engine in the Nissan Silvia S14 and S15. The OEM 2-bolt IACV bypass hard line is replaced by this anodized aluminium spacer to gain the necessary clearance for top-feed fuel rail installation. An anodized aluminium barb adapter and rubber hose are included to reroute the charge pipe hose externally around the manifold.
Suits:
- Nissan Silvia S14 — SR20DET
- Nissan Silvia S15 — SR20DET
Kit Includes:
- 1x Anodized aluminium IACV spacer, laser-etched
- 1x Anodized aluminium barb adapter fitting
- 1x Radium 18-0014 IACV gasket (Nissan)
- 1x OEM-style spring action hose clamp
- 1x Rubber hose, 1/2" ID, 2 ft length
- 3x Stainless steel M6x1mm bolts
Specifications:
- Application: Replaces OEM 2-bolt IACV bypass hard line
- Purpose: Clears top-feed fuel rail installation on SR20DET
- Material: Anodized aluminium (spacer and barb adapter)
- Finish: Laser-etched
- Hardware: Stainless steel M6x1mm bolts
Available Part Numbers:
- 20-0162 — IACV Spacer Kit, Nissan S14 / S15 SR20DET
Why Radium Engineering?
- ✅ Manufactured in the USA to motorsport-grade tolerances
- ✅ CNC-machined anodized aluminium spacer with laser-etched finish for precision fit and durability
- ✅ Trusted by tuners and race teams running high-power SR20DET builds worldwide
- ✅ Bolt-on fitment — replaces OEM IACV hard line to clear top-feed fuel rails without cutting or fabrication
- ✅ Compatible with E85, ethanol, methanol, pump petrol, and flex fuel sensor integration
What clients say
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Really fast and high quality customer support, my order got to me faster than the quoted time too. No complaints
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The team took a mostly broken car after some work done elsewhere, and have systematically made it reliable and fast for a fair price. The staff are invested in the work they do which also makes a big difference.
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Jeff was extremely helpful in assisting me with my exhaust. Always kept me updated and answered any queries in a timely manner. Will definitely be coming back for my future mods
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Justin and his crew is amazing! Always ready to help and service with a smile. Trusty, friendly and reliable! Had my car sent in for repair twice and it’s fixed on time, at a reasonable price and with no issues. Highly recommended!
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Easy to deal with and part was ordered quickly
