FuelPartsDB · WORKSHOP TECHNICAL SERVICE

DOC REF: SOP-CR-INJ-01

WORKSHOP INSTALLATION JOB SHEET & SOP

BOSCH A2740901429BOSCH A2740901429 High Pressure Fuel Pump Mercedes-Benz C300 E300 GLC300 2.0T M274 M270 0261520215 · Euro 6

Technician / Installer:

Date / Odometer:

Vehicle Reg / VIN:

Quality Sign-off:

CRITICAL INSTALLATION SPECIFICATIONS & TORQUES

Torques (Hold-down):20 N·m

Torques (Tightening):27 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

A2740901429

View Specs

SolenoidBosch HDP5 / HDP6 Gasoline Direct Injection High-Pressure Pump (200 bar)Euro 6

BOSCH A2740901429 High Pressure Fuel Pump Mercedes-Benz C300 E300 GLC300 2.0T M274 M270 0261520215

Reference data for Bosch A2740901429 common rail injector · OEM 2740901429, A2740900050, 2740900050, A2740900650, 2740900650, 0261520215, HPP0021 · Application Mercedes-Benz M270 / M274 (1.6L & 2.0L BlueDIRECT Turbo)

Engine Platform:Mercedes-Benz M270 / M274 (1.6L & 2.0L BlueDIRECT Turbo) →

OE REFERENCE2740901429, A2740900050, 2740900050, A2740900650, 2740900650, 0261520215, HPP0021

CONTROL VALVE-

NOZZLE-

RAIL PRESSURE200 bar

EMISSIONEuro 6 / ULEV II

WARRANTY12 Months

Compatible Injectors

OEM Ref

Vehicle & Engine Fitment

Vehicle	Engine	Years
Mercedes-Benz C-Class W205 (C200 / C300)	Mercedes-Benz M270 / M274 (1.6L & 2.0L BlueDIRECT Turbo)	2014-2020
Mercedes-Benz E-Class W213 (E200 / E300)	Mercedes-Benz M270 / M274 (1.6L & 2.0L BlueDIRECT Turbo)	2016-2020
Mercedes-Benz GLC-Class X253 (GLC260 / GLC300)	Mercedes-Benz M270 / M274 (1.6L & 2.0L BlueDIRECT Turbo)	2015-2020
Mercedes-Benz CLA-Class C117 (CLA250)	Mercedes-Benz M270 / M274 (1.6L & 2.0L BlueDIRECT Turbo)	2013-2019

Technical Specifications

Specification	Value
sku	A2740901429
brand	BOSCH
manufacturer_code	0261520215
pressure_rating	200 bar (2900 psi)
torque_flange	20 N-m (15 lb-ft)
torque_line	27 N-m (20 lb-ft)
engine_family	Mercedes-Benz 2.0L Turbocharged DOHC M274.920 / M270.920
Operating PressureCore Spec

CIRCUIT ASSEMBLY

Matched High-Pressure Fuel Injectors (Fuel Circuit Assembly)

Directly supplied by this high-pressure pump. Verify injector backleak balance if rail pressure fails to build during engine cranking.

BOSCHExact Engine & Chassis Match

A2700700587

Gasoline Direct Injection (GDI) • 200 bar

🚙 Mercedes-Benz C-Class (W205) (M270)

Technical Specifications & Pinout

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

Common Rail High-Pressure Pump Diagnostics Guide

Diagnose common rail high-pressure pump failure: suction vacuum, CP4 roller glitter, plunger wear, air ingress & P0087 hard start. Workshop bench testing.

Read Technical Protocol

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

COMMON RAIL WORKSHOP DIAGNOSTICS

Rail Pressure Relief Valve Diagnostics Guide

Common rail pressure relief valve (PRV) testing guide. Diagnose hot start stalls, P0087 rail pressure loss, return line leakage & single vs 2-stage valves.

Read Technical Protocol