FuelPartsDB · WORKSHOP TECHNICAL SERVICE

DOC REF: SOP-CR-INJ-01

WORKSHOP INSTALLATION JOB SHEET & SOP

NISSAN 16600-JK20ANISSAN 16600-JK20A Multi-Port Fuel Injector Infiniti G37 Q50 Q60 G35 FX35 Nissan 370Z Maxima 3.5L 3.7L VQ37VHR VQ35HR · Euro 255

Technician / Installer:

Date / Odometer:

Vehicle Reg / VIN:

Quality Sign-off:

CRITICAL INSTALLATION SPECIFICATIONS & TORQUES

Torques (Hold-down):10 N·m

Torques (Tightening):10 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

NISSAN

16600-JK20A

View Specs

SolenoidNissan ECCS Multi-Point Electronic Fuel Injection (MPI 50-psi System)Euro 255

NISSAN 16600-JK20A Multi-Port Fuel Injector Infiniti G37 Q50 Q60 G35 FX35 Nissan 370Z Maxima 3.5L 3.7L VQ37VHR VQ35HR

Reference data for Bosch 16600-JK20A common rail injector · OEM 16600-JK20B, FJ1027, 842-12348, 297500-0540 · Application Nissan/Infiniti 3.7L VQ37VHR VVEL & 3.5L VQ35HR DOHC 24V Naturally Aspirated V6

Engine Platform:Nissan/Infiniti 3.7L VQ37VHR VVEL & 3.5L VQ35HR DOHC 24V Naturally Aspirated V6 →

OE REFERENCE16600-JK20B, FJ1027, 842-12348, 297500-0540

CONTROL VALVE12-Hole High-Dispersal Micro-Droplet Atomization Director

NOZZLE-

RAIL PRESSURE3.5 bar

EMISSIONTier 2 Bin 5 / Euro 5 / LEV II

WARRANTY12 Months

Compatible Injectors

OEM Ref

Vehicle & Engine Fitment

Vehicle	Engine	Years
Infiniti G37 / Q50 / Q60	Nissan/Infiniti 3.7L VQ37VHR VVEL & 3.5L VQ35HR DOHC 24V Naturally Aspirated V6	2008-2015
Nissan 370Z Z34	Nissan/Infiniti 3.7L VQ37VHR VVEL & 3.5L VQ35HR DOHC 24V Naturally Aspirated V6	2009-2020
Infiniti G35 Sedan / FX35 / EX35	Nissan/Infiniti 3.7L VQ37VHR VVEL & 3.5L VQ35HR DOHC 24V Naturally Aspirated V6	2007-2012

Technical Specifications

Specification	Value
System Type	Nissan ECCS Multi-Point Electronic Fuel Injection (MPI / PFI)
Operating Fuel Pressure	3.5 bar (50 psi / 350 kPa regulated rail pressure)
Static Flow Rate	340 cc/min @ 3.0 bar (32.4 lb/hr) high-performance calibration
Coil Electrical Resistance	11.6 - 12.4 Ohms @ 20°C (High-Impedance Saturated Solenoid)
Spray Geometry	12-Hole Laser Precision Split-Cone Micro-Atomization Director
Fuel Rail Fastener Torque	10 N·m (89 in-lb) fuel rail mounting bolts
Intake Plenum Fastener Torque	11 N·m (97 in-lb) upper intake manifold collector bolts
Seals Architecture	Upper Viton Fluorocarbon O-Ring & Lower Resilient Intake Grommet
Manufacturer	Nissan Motor Co. / Denso (Tier-1 OEM)
Manufacturer Part Number	16600-JK20A / 297500-0540
Operating PressureCore Spec

Installation Tips

Tips & Warnings:

Never use silicone-based spray or grease on O-rings: Silicone poisons oxygen sensors and catalytic converters; lubricate strictly with fresh engine oil or spindle oil.
Always replace lower manifold rubber grommets: Reusing hardened lower grommets creates severe vacuum leaks directly into intake ports, causing unmetered lean codes.
Verify injector free rotation: After rail installation, ensure all injectors can be smoothly rotated by hand 360° to verify O-rings are not pinched or cocked.
Observe plenum tightening sequence: When reinstalling the upper composite plenum, torque fasteners in factory spiral sequence to 11 N·m to avoid cracking plastic mounting tabs.

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.

Workshop Diagnostic Protocol

Common Rail Injector Back-Leak Testing Guide

Common rail injector backleak test protocol. Graduated cylinder setup, warm idle & cranking limits in mL/min, control valve wear & P0087 diagnosis.

Read Technical Protocol

COMMON RAIL DIESEL WORKSHOP SOP

Stuck Injector Removal & Carbon Cleaning SOP | FuelPartsDB

Comprehensive workshop SOP for stuck diesel injector removal, pneumatic vibro-puller extraction, carbon solvent softening, and seat reaming without damage.

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