Motorad 1KR178 Engine Crankshaft Position Sensor

Engine Crankshaft Position Sensor for Nissan and Infiniti

The MotoRad 1KR178 engine crankshaft position sensor provides OEM-level signal accuracy for engine timing and control. It is built in IATF 16949 certified facilities and supports reliable engine operation in select Nissan Pathfinder, Nissan Pickup, and INFINITI QX4 applications.

Key Features

• Engine crankshaft position sensor for ignition and engine management systems
• Black sensor body with rectangular female connector
• Blade terminal design with 2 terminals and 1 connector
• 1 mounting hole for direct sensor placement
• No wiring harness included
• No mounting bracket included
• Sensor body diameter: 0.51 in.
• Part number: 1KR178

Detailed Description

MotoRad 1KR178 is an engine crankshaft position sensor engineered for accurate crankshaft signal input, which helps the engine control module manage ignition timing and engine operation. This sensor is a direct-fit style replacement for select 1995-2000 Nissan Pickup, 1996-2000 Nissan Pathfinder, and 1997-2000 INFINITI QX4 models. The compact black housing, rectangular connector, and blade terminals support a clean OE-style installation in the original sensor location.

This part cross-references 237311S700 and 2131972 for the same application. Use 1KR178 when replacing a worn or failed crankshaft position sensor on a Nissan Pathfinder, Nissan Pickup, or INFINITI QX4 with the listed fitment.

What It Helps Solve

• Hard starting caused by an inconsistent crankshaft position signal
• Engine stalling related to crankshaft sensor failure
• Rough running from incorrect engine timing input
• Check engine light conditions tied to crankshaft sensor faults
• Intermittent no-start concerns on fitted Nissan and INFINITI models

Installation Notes and Tips

Verify connector shape, terminal style, and mounting hole alignment before installation. This sensor uses a female rectangular connector with male blade terminals and does not include a wiring harness or mounting bracket. Confirm the original sensor location and compare the old unit to the new part number 1KR178 before installation.

Quality Assurance

MotoRad manufactures this crankshaft position sensor in IATF 16949 certified facilities to support consistent production quality. The 1KR178 is backed by MotoRad’s limited lifetime warranty.