DENSO SK20BR11 Iridium Long Life Spark Plug

The DENSO SK20BR11 is a premium iridium long-life spark plug engineered for exceptional durability and performance in direct fuel-injection engines. This OE-quality spark plug features advanced construction designed to deliver reliable ignition for over 100,000 miles under normal driving conditions.

Advanced Electrode Design:

• 0.7mm ultra-fine iridium center electrode with 360-degree laser weld for maximum durability
• Platinum-tipped ground electrode for extended service life
• Optimized for direct injection engines with anti-fouling capability
• Iridium alloy is six times harder and eight times stronger than conventional platinum

Superior Construction Features:

• Purified alumina powder insulator provides exceptional strength and thermal conductivity
• Five-rib insulator design prevents electrical flashover
• Copper-glass seal bonds center electrode and insulator for gas-tight seal
• Machine-rolled threads prevent seizing or cross-threading during installation
• 100% pre-fired at the factory to ensure highest quality
• 5000 Ohm resistor minimizes electromagnetic interference with vehicle electronics

Specifications:

• Thread Diameter: 14mm
• Thread Pitch: 1.25mm
• Reach: 19mm (3/4")
• Hex Size: 5/8" (16mm)
• Gap: .043" (1.1mm)
• Seat Type: Gasket
• Terminal Type: Solid

Installation Torque Specifications:

• Cast Iron Heads: 26-30 lb-ft
• Aluminum Heads: 15-22 lb-ft

Factory-installed by leading automakers including GM, Toyota, Honda, and Mitsubishi, the SK20BR11 is ideal for direct injection engines where anti-fouling performance is critical. Cross-references to NGK 5547 and various OEM part numbers including Volkswagen 101 905 621 A, 101 905 621 B, and Toyota 90919-01230.