DENSO DK20PR-D13 Iridium Long Life Spark Plug

The DENSO DK20PR-D13 is a premium iridium long life spark plug engineered for exceptional performance and durability. Factory-installed by leading automakers including GM, Toyota, Honda, and Mitsubishi, this spark plug delivers reliable ignition for high-tech engines. Also known as DENSO part number 3476, this plug is designed to last up to three times longer than conventional spark plugs.

Advanced Electrode Technology:

• 0.7mm iridium-tipped laser welded fine wire center electrode for superior ignitability
• Platinum-tipped ground electrode with platinum pad for extended durability
• Cross grooves on center electrode improve flame propagation
• Copper core center electrode provides exceptional thermal conductivity

Premium Construction Features:

• 100% pre-fired to ensure the highest quality and reliable operation
• Purified alumina powder insulator delivers exceptional dielectric strength and thermal conductivity
• Five-rib insulator design prevents flashover and reduces voltage loss
• Copper-glass seal bonds center electrode and insulator for a gas-tight seal
• Machine rolled threads prevent seizing or cross-threading during installation and removal
• Solid terminal nut construction

Specifications:

• Thread Size: 14mm
• Thread Reach: 19mm (0.750 inches)
• Seat Type: Gasket seat
• Tip Style: Projected tip
• Resistor: Yes
• Hex Size: 16mm
• Weight: 47 grams

Installation Torque Specifications:

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

OEM Cross References: Honda 12290-RB0-J01, 12290-RB0-JB11, 12290-RTW-004, 267700739

Experience improved horsepower, faster starts, fewer misfires under heavy loads, and better fuel economy with DENSO's patented iridium alloy that is six times harder and eight times stronger than conventional platinum.