DENSO 3377 Iridium Long Life Spark Plug - SKJ20DR-M11

The DENSO 3377 (SKJ20DR-M11) Iridium Long Life Spark Plug delivers OE-quality performance and exceptional durability for demanding automotive applications. Factory installed on luxury vehicles by automakers such as GM, Toyota, Honda and Mitsubishi, this premium spark plug is engineered to provide sustained spark performance for over 100,000 miles, lasting up to three times longer than conventional plugs.

Advanced Iridium Technology:

• 0.7mm iridium tipped laser welded fine wire center electrode and platinum tipped ground electrode
• DENSO patented optimized iridium-rhodium alloy formula with highest concentration of iridium (90% Ir) for greater durability
• 360-degree laser welding process delivers exceptional structural strength and reliability, even under extreme temperatures exceeding 4,000 degrees Fahrenheit
• 100% pre-fired to assure the highest quality possible with purified alumina powder insulator providing exceptional strength and thermal conductivity

Performance Benefits:

• Enhanced engine performance with more horsepower, quicker starts, and fewer misfires under heavy loads
• Advanced design promotes better fuel efficiency for long-term cost savings
• Machine rolled threads prevent seizing or cross threading during installation and removal
• Five rib insulator prevents flashover

Technical Specifications:

• Thread Size: 14mm, Thread Pitch: 1.25mm
• Seat Type: Gasket, Reach: 19mm (3/4")
• Hex Size: 5/8" (16mm), Resistor Value: 5K Ohm
• Gap: 0.044 inches
• Torque Specs - Cast Iron: 26-30 lb-ft, Aluminum: 15-22 lb-ft

OEM Cross References:

• Honda: 12290-PND-A02, 9807B-561-5W, 9807B-561-7W
• NGK: 6994, Autolite Iridium XP: XP5224

This DENSO spark plug represents decades of OE engineering expertise and is manufactured to the strictest performance, durability, and emissions standards. Ideal for Honda, Acura, Dodge, Jeep, and Ram applications requiring superior ignition performance and extended service intervals.