Turbo Kit for Scion xB (2008-2015) 2.4L

Intercooled stainless T3/T4 turbo package aimed at the 2008–2015 Scion xB with the 2.4L DOHC four. This is a universal 2.4L kit: the stainless tubular manifold, intercooler piping and oil lines are not chassis-specific, so expect fabrication, trimming and mock-up to clear the bay. It pairs a TIG-welded 321 stainless tubular T3 manifold with a hybrid T3/T4 turbo, internal wastegate preset to 8 psi, a front-mount intercooler, a full oiling kit and a blow-off valve. Most installs keep A/C and power steering, and it works with manual or automatic transmissions. Expect about 100 hp over stock at a conservative 8 psi with a proper tune. The 485+ hp figure is the hardware's ceiling at 25+ psi with a built engine, fueling and supporting mods, not a dyno result for a stock car. Engine family reference: 2AZ-FE.

Why this kit

• TIG-welded 321 stainless tubular manifold with large primaries and a thick T3 flange
• T3/T4 hybrid turbo with a .57 trim compressor and .50 / .63 A/R housings
• Bolt-on internal wastegate preset to 8 psi, with V-band flange and clamp
• Front-mount aluminum intercooler and full 2.5" piping kit
• Braided -3AN oil feed, high-temp return line and billet adapter plate included

Package Includes

• (1) T3/T4 hybrid turbocharger with oil fitting gaskets and mounting studs
• (1) Stainless tubular turbo manifold, T3 flange, polished, with gaskets and hardware
• (1) Front-mount aluminum intercooler, 2.5" inlet / outlet
• (1) Internal wastegate kit, preset to 8 psi, V-band flange and clamp
• (1) Aluminum intercooler piping kit: (2) 2.5" straight pipes, (2) 90°, (2) 60°, (2) 45° bends, (2) 2.5" 90° silicone couplers, (6) 2.5" straight silicone couplers, (16) stainless worm-gear clamps
• (1) Turbo oiling kit: -3AN braided stainless oil feed line, 2 extra adapter fittings, CNC billet adapter plate, 18" 5/8" high-temp 550 psi oil return line, drain and feed gaskets
• (1) Blow-off valve kit with install kit

Turbocharger Specs

• Type: T3/T4 hybrid, wet-float bearings, balanced
• Compressor: .57 trim wheel, .50 A/R housing, 3" bellhorn inlet, 2" outlet
• Turbine: .63 A/R housing, T3 inlet flange, internal wastegate with V-band outlet
• Oil inlet: 1/8" NPT

Exact Fitment — Scion xB

• 2008–2015 Scion xB with the 2.4L DOHC four
• Not for first-gen xB 1.5L, xA 1.5L or xD 1.8L
• Universal kit — verify header clearance and piping route in the xB bay before final install

Not Included

• Chassis-specific downpipe and exhaust beyond the turbo
• Larger injectors, fuel pump and ECU tune (required)
• Boost gauge, wideband and air filter
• Oil-pan return bung if your setup needs one
• Chassis-specific brackets — piping and manifold fit may need fabrication

Installation Notes

• Professional installation strongly recommended. This is a universal kit — expect cutting, welding or custom brackets for manifold clearance and piping route
• Oil return must drain by gravity; prime the turbo with oil before first start and check for leaks at feed and return
• Blow-off valve flanges are installed at your discretion
• Do not exceed the wastegate's 8 psi until fuel and tune are upgraded

FAQs

Does this fit an xD or xA? No. Those engines are not 2.4L — this listing is for the 2008–2015 xB 2.4L only.

How much power will it make? About 100 hp over stock at 8 psi on a healthy stock engine with a proper tune. 485+ hp is the hardware ceiling with a built engine and full supporting mods.

Can I keep A/C and power steering? Most installs keep both; confirm clearance during mock-up.

Manual or automatic? Fits either when the engine matches.

Is it bolt-on? No. Piping and manifold fit are universal and usually need fabrication, plus injectors, a fuel pump and a tune.