BK5E Iridium Ignition Spark Plug

STSP1003 is organized as a multi-reference spark plug range covering ten OE and OEM combinations currently listed on this page. The range includes references for Toyota, Nissan, Mitsubishi, BMW, Mercedes-Benz, Buick/Chevrolet and Renault, giving distributors and importers access to several related spark plug items within one sourcing group.

The listed products do not all use the same material configuration. Nickel-copper is the main material shown across the range, several references also include Iridium information, and one listed item is identified as Standard. Each product should therefore be confirmed according to its corresponding OE No., OEM No. and material information before ordering.

Grouping these references under STSP1003 can simplify multi-model sourcing, but the individual entries should not be treated as identical or interchangeable simply because they appear on the same product page.

Electrode Materials for Different Spark Plug Specifications

Spark plug electrodes are repeatedly exposed to electrical discharge and combustion heat, so electrode material forms an important part of the product specification. Nickel-based materials are widely used in conventional spark plug designs, while iridium is used in certain precious-metal electrode configurations where greater resistance to electrode wear is required.

As firing surfaces gradually wear, the condition of the electrodes and effective spark gap can change. This can influence the voltage required for spark discharge. Different material configurations are therefore used according to the intended spark plug design rather than as a universal performance ranking.

For STSP1003, material type should always follow the corresponding reference in the product list. Buyers should not assume that every item grouped on this page uses an iridium electrode simply because “Iridium” appears in the product title.

Purchasing Details for Bulk Orders

IGNX supplies STSP1003 for distributors, importers and automotive aftermarket brands. Because this product group contains multiple OE/OEM references and different material configurations, buyers should confirm each required item against the OE No., OEM No. and material information already listed on the page.

For quotation, buyers can submit the required references from the list above together with order quantities, packaging requirements and any private-label information. For mixed-reference or repeat orders, confirming the complete purchasing list before production helps keep product specifications and order records consistent.