Old NGK BUR7EQ PN#3559
http://www.summitracing.com/parts/ngk-3559
Quote:
Brand: NGK Spark Plugs
Manufacturer's Part Number: 3559
Part Type: Spark Plugs
Product Line: NGK Standard Series Spark Plugs
Summit Racing Part Number: NGK-3559
UPC: 087295135594
Shorty Spark Plug: No
Resistor: Yes
Manufacturer Heat Range: 7
Electrode Core Material: Copper
Electrode Tip Material: Nickel alloy
Insulator Type: Non-projected
Spark Plug Thread Size: 14mm
Spark Plug Reach: 0.750 in.
Spark Plug Seat Style: Gasket
Wrench Diameter: 13/16 in.
Ground Strap Quantity: Four
NGK Part Number: BUR7EQ
Quantity: Sold individually.
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New NGK BUR7EQ PN#6917
http://www.summitracing.com/parts/ngk-6917
Quote:
Brand: NGK Spark Plugs
Manufacturer's Part Number: 6917
Part Type: Spark Plugs
Product Line: NGK Standard Series Spark Plugs
Summit Racing Part Number: NGK-6917
Shorty Spark Plug: No
Resistor: Yes
Manufacturer Heat Range: 7
Electrode Core Material: Copper
Electrode Tip Material: Copper
Spark Plug Thread Size: 14mm
Spark Plug Reach: 21.5mm
Spark Plug Seat Style: Gasket Wrench Diameter: 13/16 in.
Ground Strap Quantity: One
NGK Part Number: BUR7EQ
Quantity: Sold individually.
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Note between the two...
* Material -
Nickel Alloy versus
Copper
* Spark Plug Reach -
0.750 in. versus
21.5mm
* Ground Strap Quantity -
Four versus
One
-Ted