Turbo Kit for BMW 2002 E21 318 E12 518 M10 (1968-1983) 1.5L 1.6L 1.8L 2.0L

Intercooled T3/T4 turbo kit for BMW M10 four-cylinder cars — 2002, 1600/1800, E21 318 and E12 518 (1968–1983). 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 strong gains at a conservative 8 psi with a proper tune. The 450+ hp figure is the hardware's ceiling at higher boost with a built engine, fueling and supporting mods, not a dyno result for a stock car.

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 — BMW

• 1968–1976 2002 / 1600 / 1800 / 1500 with M10 four-cylinder
• 1975–1983 E21 318i with M10
• 1976–1981 E12 518 with M10
• M10 SOHC four only — not for M20 E30 six, M40/M42 later fours, or M50/M52
• Intercooler piping is universal and needs cutting and fitting per chassis

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

Installation Notes

• Professional installation strongly recommended. The intercooler piping is universal, so expect some cutting and fitting
• 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 E30 325i M20? No. That is a different engine family — see the E30 M20 kit.

How much power will it make? Strong gains at 8 psi on a healthy stock M10 with a proper tune. 450+ 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 plug-and-play? No. You still need injectors, a fuel pump, an ECU tune and some pipe fitting.