90048-51188 Iridium Platinum Automotive Spark Plug for Toyota

STSP1012 is a focused automotive spark plug product built around the single OE and OEM reference combination currently listed on this page. Its material information includes Iridium & Platinum together with Iridium, positioning it within the precious-metal spark plug category for the corresponding replacement requirement.

Because this page represents one clearly identified reference rather than a multi-reference product group, distributors and importers can confirm the required product directly against the OE No. and OEM No. already provided above.

Selection should still be reference-based rather than relying only on the words “Iridium” or “Platinum.” Similar-looking precious-metal spark plugs can have different specifications, so the listed OE/OEM relationship remains the primary basis for purchasing.

Precious-Metal Electrodes and Firing-Surface Wear

Spark plug electrodes are repeatedly exposed to electrical discharge, combustion heat and rapid temperature changes during engine operation. Iridium and platinum are commonly used in spark plug firing areas because of their resistance to electrode wear under these conditions.

As the firing surfaces gradually wear, electrode geometry and the effective spark gap can change. Increased gap generally requires higher voltage for spark discharge, so controlling electrode wear is important for maintaining a more consistent firing condition during normal service.

Precious-metal construction should not be interpreted as a universal performance upgrade or as proof that different iridium-platinum spark plugs are interchangeable. Correct use still depends on matching the required product reference and complete ignition specification.

Purchasing Details for Bulk Orders

IGNX supplies STSP1012 for distributors, importers and automotive aftermarket brands. For wholesale and repeat purchasing, buyers can confirm the required product 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 product reference and order requirements before production helps simplify repeat purchasing and inventory management.