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NAPA Auto Parts GRANDVIEW
844 Grandview Ave
Columbus,  OH  43215-1124
(614) 488-3176
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GM Genuine Parts Iridium Spark Plug

GM Genuine Parts Iridium Spark Plug

Part #: AC 41156
Line: ACDelco
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Features & Benefits

Warranty :Standard : 7 Year Unlimited Mileage (Excludes High Performance and Non-Automotive usage)

ACDelco is the premier supplier of GM Original Equipment (OE) automotive replacement parts, as well as a trusted provider of premium aftermarket parts for most other makes and models. ACDelco offers nearly 90,000 auto parts across 37 product lines, and our products can be found globally. As a global leader in automotive replacement parts and related services, our focus has always been on delivering peace of mind, reliability and a legacy of quality and trust.


  • Iridium is the latest in spark plug technology and is an exact replacement for vehicles’ original components
  • Iridium composition provides a high melting point and great strength, helps to provide excellent wear resistance and durability
  • Iridium offers excellent engine idle stability, reliable cold starting, quick acceleration and smooth performance
  • Three Piece Fired in Suppressor seal meters spark energy for long electrode life, helps prevent combustion leakage and helps block radio frequencies that can affect vehicle electronics
  • Iridium plugs are laser-welded which provides precision welds, reduces excess debris and wear rate, thus increasing durability
  • Some ACDelco GM Original Equipment parts may have formerly appeared as GM Genuine Parts (OE) or ACDelco Professional
  • ACDelco GM Original Equipment parts are designed, engineered and tested to rigorous standards, and are backed by General Motors.
  • GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
  • GM regularly updates production and service part designs to integrate new materials and technologies

Specifications

Thread Diameter 12 mm
Insulator Type Projected
Terminal Type Non-removable Nut
Spark Plug Reach 83.2 mm
VMRS Code 033003005
Spark plug Inductive No
Thread Size 12 mm x 1.25
Spark Plug Heat Range ACDelco 8
Brand ACDelco
Gap Size 0.7 mm
Seat Type Tapered
Electrode Core Material Nickel
Spark Plug Resistor Yes
Resistor Type Yes
SDS Required No
Hex Size 14 mm

Safety Information

Vehicle Fitment Guide

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