starter 23300-0W010 17683 M0T60181 for VQ33E V6 3.3L

The installation of the Nissan Infiniti 12V 1.2KW starter must be performed in accordance with the mechanical layout characteristics of Infiniti models (such as G35, G37, QX4, etc.). It generally follows the logic of "preparation first, installation next, and testing last". Below is a universal installation method suitable for most Infiniti models. Corresponding tools must be used during operation, and safety specifications must be strictly followed:

Pre-installation Preparation

Safety Protection and Vehicle Securing

Wear insulated non-slip gloves and safety goggles. Park the vehicle on a level surface, engage the handbrake, and secure the wheels with wheel chocks. Disconnect the negative battery cable (for some Infiniti models such as the QX4, it is recommended to disconnect the positive cable simultaneously) to avoid short circuits during live work. If under-vehicle operation is required, support the vehicle body with special stands—never rely solely on a jack for load-bearing. Ensure the engine is fully cooled.

Tool and Component Preparation

Prepare tools including a socket wrench set, ratchet wrench, torque wrench, metal brush, and high-temperature grease compatible with Infiniti. Verify the parameters of the new starter to confirm that the 12V voltage and 1.2KW power are compatible with the vehicle. Inspect the starter housing for cracks, the drive gear for missing teeth, and the brushes for excessive wear. Synchronously check the flywheel ring gear—if wear exceeds 1/3 or there are chipped teeth, replace the ring gear first.

Post-old-starter Removal Follow-up

Before installation, the old starter must be removed. During removal, mark the positions of wire harness connectors and fixing bolts. Remove auxiliary parts such as the heat shield and wire harness bracket from the old starter for later use, and clean the oil stains and oxide layer on the mounting surface at the junction of the engine and transmission with a metal brush.

Main Body Installation

Positioning and Securing the Starter Assembly

Align the new 12V 1.2KW starter with the mounting position at the junction of the engine and transmission housing (for most Infiniti models, the starter is located on the passenger side near the transmission housing; for some models, the bottom protective plate must be removed first to expose the mounting position). Manually thread the fixing bolts for preliminary positioning. The reference torque is approximately 37N·m (consistent with the universal standard for similar passenger cars). Tighten with a torque wrench to avoid deformation of the mounting surface due to excessive torque or operational resonance due to insufficient torque.

Transferring Auxiliary Accessories

If the old starter is equipped with auxiliary parts such as a heat shield or wire harness fixing bracket, completely remove them and install them on the new starter. In some areas of the Infiniti engine compartment, components are close to the exhaust pipe—the heat shield can prevent high temperatures from accelerating starter aging. The reference torque for installing the wire harness bracket is 8.4N·m.

Standardized Lubrication

Apply an appropriate amount of high-temperature grease only to sliding contact surfaces such as the starter armature shaft, bracket bushing, and drive gear splines. Wipe off excess grease after application to avoid splashing onto the coil or flywheel ring gear, which may affect operation.

Wiring Connection

Connecting the Main Power Terminal

Connect to the B+ main power terminal of the starter. If there are signs of oxidation on the terminal, clean it with a metal brush; a flat washer can be installed for reinforcement. The recommended tightening torque for the terminal connecting nut is 9.8N·m—avoid excessive torque (which may cause terminal breakage) or insufficient torque (which may lead to poor contact).

Plugging in the Control Circuit

Align with the solenoid switch wiring connector and ensure the locking clip is fully engaged. Do not insert in reverse to prevent burnout of the control circuit. For some Infiniti models, the wire harness must avoid the exhaust pipe and transmission counterweight. Following universal specifications, the small wire can be bound to the main wire with electrical tape 30mm from the terminal node to reduce vibration impact.

Organizing and Securing the Wire Harness

Use wire harness clips to fix the organized wiring to prevent loosening due to vehicle vibration during driving. Pay special attention to protecting the connector to avoid wire harness damage and short circuits.

Test Acceptance

No-load Test

Reconnect the negative battery cable (and the positive cable if disconnected earlier). Turn on the power for a no-load test. The single start time should not exceed 3 seconds; if repeated tests are needed, allow an interval of 10–15 seconds. Observe whether the starter operates smoothly without abnormal noise and whether the drive gear extends and retracts smoothly.

Load Test

After the no-load test is normal, start the engine for a load test. If the engine starts quickly without jamming or abnormal gear meshing noise, the installation is successful. If issues such as an unresponsive starter or jamming occur, immediately disconnect the negative battery cable and inspect for faults such as loose wiring or installation deviation. Retest only after troubleshooting—never force-start to avoid expanding the fault scope.

Final Follow-up

After successful testing, reinstall the previously removed components such as the vehicle's bottom protective plate. Recheck that there is no interference with the wire harness around the starter, clean tools and debris from the work area, and finally confirm that the battery terminals are secure.

Safe Operation

Adhere Strictly to Power - Off and Anti - Scald Guidelines

References：

The installation method and precautions for the Nissan Infiniti 12V 1.2KW starter you previously obtained are not derived from a single official Infiniti vehicle service manual. Instead, they are a practical operational guide compiled and summarized by integrating the universal maintenance logic of Infiniti models, general standards of the automotive repair industry, and relevant automotive maintenance popular science content. The specific reference bases are as follows:

General Installation and Protection Specifications of the Automotive Repair Industry

Many torque standards, operational procedures, and safety guidelines in the content are highly consistent with the general industry standards for automotive starter maintenance. For example, key parameters such as the reference torque of 37N·m for starter fixing bolts, 8.4N·m for wiring harness bracket installation, and 9.8N·m for main power terminal tightening can be found in the identical universal torque standards in the starter replacement popular science content on PCauto Encyclopedia. Additionally, precautions such as disconnecting the negative battery terminal to prevent short circuits before installation, prohibiting violent strikes on the starter with metal tools, and limiting single no-load test duration to no more than 3 seconds with a 10–15 second interval between retests are also consistent with the core taboos for starter disassembly and assembly published on Autohome. These general specifications form the foundation for ensuring installation safety and equipment integrity, and serve as an important framework for constructing this installation method.

Maintenance Practice Characteristics of Specific Infiniti Models

The model-specific installation details in the content refer to the starter maintenance practice logic of Infiniti models such as the G35, G37, and QX4. For instance, descriptions of layout features—such as the starter being located on the passenger side near the transmission case in most Infiniti models, and the need to remove the bottom protective plate to expose the installation position in some models—align with the practical descriptions of installation position positioning and protective plate removal in the Infiniti G35/G37 starter replacement guides published on overseas platforms. Meanwhile, considering the structural characteristic of Infiniti engine compartments where certain areas are adjacent to exhaust pipes (high temperatures easily accelerate component aging), the requirement for mandatory installation of the heat shield is emphasized as a targeted specification derived from the brand's engine compartment design.