Toyota Double Iridium Engine Spark Plug 90919-01247

STSP1013 is a Toyota-focused spark plug product built around the single OE and OEM reference combination currently listed on this page. The product information identifies the material category as Iridium and Double Iridium, providing a clear reference point for aftermarket distributors and importers sourcing the corresponding ignition part.

Because this is a focused single-reference product rather than a broad multi-model range, buyers can confirm the required item directly according to the OE No. and corresponding OEM No. already shown in the product information.

Product selection should remain reference-based. Similar-looking iridium spark plugs can differ in firing-end construction and other specifications, so material description or external appearance alone should not be used to determine interchangeability.

Iridium Electrode Technology and Wear Resistance

Spark plug firing surfaces are repeatedly exposed to electrical discharge, combustion heat and rapid temperature changes during engine operation. Iridium is widely used in precious-metal spark plug designs because of its resistance to electrode wear under these conditions.

Iridium also allows relatively fine firing-electrode designs where required by the spark plug specification. A finer firing tip can concentrate the electric field around the electrode and reduce the voltage needed to initiate spark discharge.

Electrode wear gradually changes the firing surfaces and can increase the effective spark gap. Limiting this wear helps maintain a more consistent electrode condition over time, but correct replacement still depends on the complete product specification rather than electrode material alone.

Purchasing Details for Bulk Orders

IGNX supplies STSP1013 for distributors, importers and automotive aftermarket brands. For wholesale or repeat orders, buyers can confirm the required product directly according to the OE No. and corresponding OEM No. already listed on this page.

For quotation, buyers can provide the OE or OEM reference listed above together with the required quantity, packaging requirements and any private-label information. Confirming the reference and order requirements before production helps simplify repeat purchasing and inventory management.