FuelPartsDB · WORKSHOP TECHNICAL SERVICE

DOC REF: SOP-CR-INJ-01

WORKSHOP INSTALLATION JOB SHEET & SOP

BOSCH 9A211012800BOSCH 9A211012800 DFI Fuel Injector Porsche 911 991.2 Carrera S GTS 718 Cayman 3.0T 2.5T 0261500405 · Euro 56

Technician / Installer:

Date / Odometer:

Vehicle Reg / VIN:

Quality Sign-off:

CRITICAL INSTALLATION SPECIFICATIONS & TORQUES

Torques (Hold-down):10 N·m

Torques (Tightening):23 N·m

Copper washer:Renew the sealing washer on every installation. 1.50 mm standard; step up to 1.70 mm after light seat reaming, 2.00 mm after heavy seat refinishing.

IMA / ECU coding:Not required for this assembly

MANDATORY INSTALLATION CHECKLIST

[ ]Bore cleaned to bare metal using nylon/brass reaming brush & vacuumed (zero debris / no steel wire)
[ ]New copper sealing washer fitted with correct thickness (do not reuse old washer)
[ ]High-temperature ceramic paste applied to injector body shaft (never coat the nozzle tip)
[ ]Hold-down clamp bolt tightened in stage torque/angle sequence as specified
[ ]Fuel rail high-pressure line union torqued without tension or cross-threading
[ ]IMA / QR calibration code entered into diagnostic tool (Lexia/KTS/VCDS) for cylinder balancing
[ ]Low-pressure air bleed performed, engine idling leak-off test verified leak-free

BOSCH

9A211012800

View Specs

SolenoidGasoline Direct Injection (GDI)Euro 56

BOSCH 9A211012800 DFI Fuel Injector Porsche 911 991.2 Carrera S GTS 718 Cayman 3.0T 2.5T 0261500405

Reference data for Bosch 9A211012800 common rail injector · OEM 9A211012801 · Application Porsche 3.0L Twin-Turbo Flat-6 & 2.5L Flat-4 DFI DOHC 24V (9A2 / MDD.DC / MDC.JA)

Engine Platform:Porsche 3.0L Twin-Turbo Flat-6 & 2.5L Flat-4 DFI DOHC 24V (9A2 / MDD.DC / MDC.JA) →

OE REFERENCE9A211012801

CONTROL VALVE-

NOZZLE-

RAIL PRESSURE200 bar

EMISSIONEuro 5 / Euro 6

WARRANTY12 Months

Compatible Injectors

OEM Ref

Vehicle & Engine Fitment

Vehicle	Engine	Years
Porsche 911 Carrera / Carrera S / Carrera 4S / GTS (991.2 / 992)	3.0L Twin-Turbo Flat-6 DFI (9A2 / MDC / MDD)	2016-2023
Porsche 718 Boxster S / GTS & 718 Cayman S / GTS (982)	2.5L Turbo Flat-4 DFI (9A2 / MDD.DC)	2016-2023

Technical Specifications

Specification	Value
Part Number / SKU	9A211012800
Manufacturer Brand	BOSCH
Component Type	Direct Fuel Injector
Engine Application	Porsche 3.0L Twin-Turbo Flat-6 & 2.5L Flat-4 DFI DOHC 24V (9A2 / MDD.DC / MDC.JA)
Operating PressureCore Spec
Mounting Torque (Flange / Bracket)	10 N-m (89 lb-in)
Fuel Line / Rail Torque	23 N-m (17 lb-ft)
Primary Diagnostic Fault Codes	P0300, P0301, P0171, P0172

Installation Tips

Depressurize Fuel System: Pull fuel pump fuse or disconnect LPFP harness. Crank engine 5-8 seconds until it stalls to drop residual rail pressure below 5 bar.
Clean Surrounding Cavity: Blow compressed air around cylinder head bore or pump flange cavity to prevent dirt ingress into the fuel rail.
Lubricate & Fit Seals: Inspect Teflon combustion seals or O-rings. Coat lightly with clean motor oil (do not use grease) to avoid tearing during insertion.
Torque to Factory Specification: Hand-thread bolts evenly. Tighten mounting fasteners to 10 N-m (89 lb-in), and torque fuel line fittings to 23 N-m (17 lb-ft).
Prime & Leak Check: Cycle ignition to RUN position 3 times (5 seconds each) to build low-side pressure. Inspect fittings for leaks before starting engine.

Diagnostic Trouble Codes & Fault Protocols

Common diagnostic trouble codes (DTCs) triggered when this common rail injector experiences wear, circuit faults, or calibration drift:

P0087Critical

Fuel Rail / System Pressure Too Low

Excessive internal backleak from worn control valve seats drops common rail pressure below target under engine load.

P0087 Guide →🧪 Backleak Calculator

P0201 - P0208High

Injector Circuit Malfunction / Open Circuit

Solenoid coil resistance drift (0.2-0.5 Ω) or piezo stack degradation triggers driver stage shutdown on affected cylinders.

P0201 Circuit Guide →

P0300 / P0301+High

Cylinder Misfire & Balancing Deviation

Carbon-clogged nozzle spray holes or missing IMA calibration causes uneven cylinder contribution. Recode ECM and verify washer seating.

P0300 Misfire Protocol →💻 IMA Coding Tool 📐 Washer Thickness

P0088High

Fuel Rail / System Pressure Too High

Spill line backpressure or stuck metering valve prevents rail depressurization, creating overpressure risks under load.

P0088 Guide →📊 Rail Pressure Converter

Browse all 61 Diesel Diagnostic Trouble Codes in our Workshop Hub ->

WORKSHOP PROTOCOLS

Technical Diagnostic & Service Protocols

Authoritative field procedures, diagnostic testing thresholds, and service SOPs for this assembly.

COMMON RAIL WORKSHOP DIAGNOSTICS

Fuel Metering Valve (IMV/SCV) Diagnostics Guide

Diagnostic guide for common rail fuel metering valves (IMV/SCV/FCA/MPROP). Normally open vs closed, coil resistance, PWM duty cycle & P0088 / P0089 test.

Read Technical Protocol

OBD-II DIAGNOSTIC PROTOCOL

P0087 Low Rail Pressure Diagnosis Guide

Step-by-step workshop diagnostic protocol for OBD-II DTC P0087 (Fuel Rail Pressure Too Low). 5-stage troubleshooting tree: backleak testing, SCV valve, PRV valve, and high-pressure pump.

Read Technical Protocol

DIESEL WORKSHOP DIAGNOSTIC SOP

Cylinder Balance & Injector Deviation Guide

Common rail diesel cylinder balance & smooth running diagnostic guide. Balance rates, mg/stroke deviation, P0263 misfire, compression vs injector test.

Read Technical Protocol

ASSEMBLY & INSTALLATION PROTOCOL

Diesel Injector Torque Specs & TTY Angles Guide

Common rail diesel injector hold-down bolt torque specs, TTY angles & pipe unions. Covers Bosch, Detroit DD13, Cummins & VAG 2.0 TDI workshop data in Nm.

Read Technical Protocol