Turbo Kit for Chevrolet HHR (2006-2008) 2.4L

Complete intercooled T3/T4 turbo package for the Chevrolet HHR (2006–2008) with the 2.4L four. It pairs a stainless tubular manifold with a hybrid turbo, front-mount intercooler, piping, boost controller, turbo timer, stainless downpipe, heat wrap and intake filter in one box. Most installs keep A/C and power steering, and it works with manual or automatic transmissions when the engine matches. About +50–100 hp on a healthy stock engine at 8 psi with a proper tune. 485+ hp is the hardware ceiling with a built engine and supporting mods, not a dyno result for a stock car. Engine code reference: LE5.

Why this kit

• T3/T4 hybrid turbo with a .57 trim compressor and .50 / .63 A/R housings
• 321 stainless tubular manifold with a T3 flange
• Front-mount intercooler, full 2.5" piping and slim cooling fan
• Boost controller, turbo timer, stainless downpipe and heat wrap included

Package Includes

• (1) T3/T4 hybrid turbocharger with oil fitting gaskets and mounting studs
• (1) TIG-welded 321 stainless tubular turbo manifold, T3 flange, ported and polished
• (1) Front-mount aluminum intercooler
• (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) Manual boost controller with install kit
• (1) Slim reversible cooling fan
• (1) Electronic turbo timer with LED display and wiring
• (1) Stainless downpipe, 2.5" inlet, mandrel bent, waterjet-cut flange
• (1) 10-meter heat wrap roll
• (1) High-flow intake filter
• (1) High-flow breather cap
• (1) Coolant sensor bung

Turbocharger Specs

• Type: T3/T4 hybrid, wet-float bearings, balanced
• Compressor: .57 trim wheel, .50 A/R housing, 3" inlet, 2" outlet
• Turbine: .63 A/R housing, T3 inlet flange
• Oil inlet: 1/8" NPT
• About +50–100 hp on a healthy stock engine at 8 psi with a proper tune. 485+ hp is the hardware ceiling at higher boost with a built engine and supporting mods — not a stock-car dyno result

Exact Fitment — Chevrolet HHR

• 2006–2008 Chevrolet HHR with the 2.4L four
• Intercooler piping is universal and needs cutting and fitting per chassis

Not Included

• Larger injectors, fuel pump and ECU tune (required)
• External wastegate / blow-off valve kits (not in this package — plan boost control during install)
• Clutch upgrade, boost gauge and wideband
• Oil-pan return bung if your setup needs one

Installation Notes

• Professional installation strongly recommended. Expect cutting and fitting of the universal piping
• Oil return must drain by gravity; prime the turbo with oil before first start and check for leaks
• Keep boost near 8 psi until fuel and tune are upgraded, and let the turbo timer handle cool-down

FAQs

Does this fit an HHR SS turbo from the factory? This kit is for naturally aspirated 2.4L HHRs. Confirm your engine before ordering.

How much power will it make? About +50–100 hp on a healthy stock engine at 8 psi 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 plug-and-play? No. You still need injectors, a fuel pump, an ECU tune and some pipe fitting.