IW16TT Denso TT Iridium Twin Spark Plug - 4708 - Fast Tracked Shipping

IW16TT  Denso TT Iridium Twin Spark Plug    -    4708  -  Fast Tracked Shipping

Can replace NGK BPR5EIX-11 and Denso IW16

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Iridium and platinum technologies combine with Denso’s 360-degree laser welding process in Denso Twin-Tip Iridium to create a plug with a lifetime over 100,000 miles. TT or Twin-Tip technology promotes spark energy concentration and explosion, which translates into improved acceleration and economy. Iridium TT feature the world’s smallest 0.4mm iridium center electrode and 0.7mm needle tip ground electrode, which minimize spark interference and maximize ignitability, resulting in better power, torque and fuel economy. Denso’s patented iridium alloy has the highest iridium concentration, making it more durable and producing a dramatic improvement in spark plug life. Machine rolled threads prevent seizing or cross threading during installation and removal. 100% pre-fired to assure the highest quality possible. Purified alumina powder insulator provides exceptional strength and thermal conductivity. Five rib insulator prevents flashover. Copper-glass seal bonds center electrode and insulator for a gas-tight seal.

Thread Diameter 14mm
Thread Pitch 1.25mm
Seat Type Gasket
Reach 19mm (3/4")
Hex Size 13/16" (21mm)
Terminal Type Solid
Overall Height JIS
Gap .039" (1.0mm)
Center Electrode Material Iridium
Type Fine Wire
Size 0.4mm
Projection Projected
Ground Electrode Material Platinum
Type Fine Wire
Resistor Yes
Resistor Value 5k Ohm
Heat Range 16
Torque Specs Cast Iron: 26-30 lb. ft. Aluminum: 15-22 lb. ft. 
Longevity 100k  

IW16TT
IW16 TT
IW16-TT
IW16_TT
IW16TT
BPR5EIX-11
BPR5EIX11
BPR5EIX 11