OE 39320-3C550 — Sensor Knock LH for Hyundai

Start from the code cast or printed on the part you are removing — that is the authoritative source. If it is illegible, use the Applications table on the closest electrical & sensors reference and narrow by build year. Send photos and we will cross-check the number for you.

Every shipment of 39320-3C550 leaves with a packing list, photo documentation and a QC report. Warranty terms are agreed per contract and reference that inspection record; claims are settled in writing against the documentation.

Four variables explain most of the spread: material grade, whether the goods are new production or clearance stock, packing format, and whether the quote is ex-works or landed. Ask for the material certificate alongside the price — that is what makes a comparison like-for-like.

Treat it as a wear item: inspect every 20,000-30,000 km and replace at the first sign of leakage, noise or performance loss. Real service life swings widely with climate, road surface and duty cycle, so mileage on its own is a weak indicator.

A supersession happens when the maker revises a sensor knock lh and issues a new tail number. The revision normally changes a small physical detail rather than the fit. Where we know a supersession chain for 39320-3C550 we list the current reference; ask our desk for written confirmation before a large order.

Position depends on the platform. On most Hyundai applications the sensor knock lh sits on the electrical & sensors assembly and can be reached from the engine bay or the underbody without removing the dashboard. Torque figures and disassembly order are given in the workshop manual for each model.