Subaru IMPREZA WRX STI 2011 Service Manual – Factory OEM Specifications

If you are wrenching on a Subaru IMPREZA WRX STI 2011 Service Manual car and you don’t have the factory manual open on your bench, you are gambling with time and parts. I have seen too many guys trust aftermarket data and snap head bolts because the torque value was off by 5 ft-lb. This 3328-page manual is what Subaru trained techs use. It is the only source for verified OEM torque specs, wiring diagrams, and diagnostic routines. Forget searching forums.

Specifications Section – Engine, Transmission, and Suspension Data

The SPECIFICATIONS chapter (SPC) gives you the numbers that matter. Dimensions, engine bore and stroke, electrical system ratings, transmission gear ratios, steering geometry, suspension alignment, brake rotor thickness, tire pressures, fluid capacities, and vehicle weights. Need to know the exact capacity for the 6MT gearbox? That’s in the CAPACITY table under the TRANSMISSION entry. No guesswork.

Precaution Section: Why You Must Read This Before Touching the Car

Subaru packs a 15-page PRECAUTION chapter with warnings that will save your skin and your wallet. It covers VDC system handling, brake fluid contamination risks, radiator fan lockout procedures, road test safety, airbag module disposal, window adhesive curing times, and proper hose removal techniques. Skip this section and you risk setting off an airbag or warping a brake rotor. I’ve had to redo customer work because someone ignored the fastener notice on page [DATA NEEDED].

Pre-Delivery Inspection (PDI) – 43-Step Checklist

The PRE-DELIVERY INSPECTION section (PI) is a detailed walkthrough covering appearance, tire condition, fuse function, door and rear gate locks, child safety locks, fuel lid release, front hood latch, battery state, brake fluid level, engine oil, transmission gear oil (5MT and 6MT), rear diff oil, coolant, clutch fluid, washer fluid, TPMS (U.S. models), immobilizer system, starting condition, exhaust system, indicator lights, heater, A/C, clock, audio, navigation, power supply socket, lighting, wipers, power windows, sunroof, rear defogger, parking brake, and more. Each step has a pass/fail criterion. Use this as a baseline before any major repair.

How to Use This Manual – Structure and Conventions

The HOW TO USE THIS MANUALS chapter (HU) explains the layout: sections, contents, component indexing, and the definitions of NOTE, CAUTION, and WARNING. It also covers inspection intervals, diagnosis flow, SI unit conversions, and terminology. This manual uses SI units in the text, but the fastener torque tables give imperial equivalents. If you see a torque spec in N·m, flip to the back of the section for the ft-lb conversion. Never assume.

Why OEM Documentation Beats Aftermarket Reprints

Aftermarket manuals often photocopy outdated pages and miss critical updates. Subaru issues revisions through service bulletins that get incorporated into the official PDF. This 2011 manual contains the latest information at time of publication. The wiring diagrams are color-coded and scaled correctly. The diagnostic procedures follow a logical “if-then” tree that actually matches the car’s CAN bus behavior. I have used both; the OEM manual saves me an hour per job on average.

FAQ

Is this the same manual Subaru dealerships use?

Yes, it is the identical factory service manual issued by Fuji Heavy Industries for 2011 model year IMPREZA WRX and WRX STI vehicles. Same part number G1110BE1.

Does it cover the EJ257 engine in detail?

Absolutely. The ENGINE section (not shown in the quick index but included in the full PDF) covers all engine removal, disassembly, inspection, reassembly, and torque sequences. The SPECIFICATIONS chapter gives you bore, stroke, compression ratio, valve clearance, and oil capacity. The manual also includes the turbocharger system, intercooler, and engine control diagnostics. If you need to pull the head, you need the factory bolt tightening sequence – and this manual has it.

What format is the download?

PDF with 3328 searchable pages. You can print individual pages for the workbench. The file is watermarked with your order info but fully readable.

Are torque specs listed in imperial units?

The tables include both N·m and ft-lb. For small fasteners, inch-pounds are also given. See page [DATA NEEDED] for a complete list.

Related Manuals

• SUBARU IMPREZA WRX WRX STI 2011 Service Manual
• SUBARU Impreza WRX STI 2008 Service Manual
• 2005 Subaru LEGACY Service Manual – Factory Specs, 4596 Pages

Even major manufacturers like Toyota rely on similar OEM documentation for their service network Automotive Industry Overview. This manual follows the same standard as Automotive Industry Overview.

Stop trusting internet forum threads and mystery PDFs. Get the real deal. Download the Factory Manual from AutoRepairManuals and start working with the only specs that matter.