2012 GMC Sierra 2500 HD Spark Plugs
More 2012 GMC Sierra 2500 HD Spark Plugs
Find your specific 2012 GMC Sierra 2500 HD original or aftermarket Spark Plugs below. Order your parts online and have delivered to your home or pick up in-store at Advance Auto.
Essential 2012 GMC Sierra 2500 HD Spark Plugs
Champion – Iridium Spark Plug: Maximum Performance, OE Replacement, RS14WLPB5 (Part No.9402)
from
$8.29
Champion Iridium – the ultimate element. This spark plug’s fine-wire iridium center and platinum ground electrodes provide the sharpest spark focus for maximum performance.
Product Features:
See More
Product Features:
- Champion Iridium – Maximum Performance. Premium Spark Plug
- Iridium center electrode delivers maximum life
- Fine-wire center electrode and V-trimmed for greater ignitability
- V-trimmed ground electrode promotes sharper spark focus
- Maintains stable operating temperature under all engine loads
- Heat-Active alloy allows electrodes to reach optimal temperature quickly
ACDelco – Iridium Spark Plug: Original Equipment Replacement (Part No.41-162)
from
$11.99
ACDelco GM Original Equipment Iridium Spark Plugs are designed, engineered, and tested to rigorous standards, and are backed by General Motors. They are our latest in spark plug technology and an exact replacement for your vehicle’s original components. Iridium composition provides a high melting point and great strength, and provides excellent wear resistance and durability. ACDelco GM Original Equipment parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some ACDelco GM Original Equipment parts may have formerly appeared as GM Genuine Parts (OE) or ACDelco Professional.
Product Features:
See More
Product Features:
- 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
- Resistor Type: Equipped with a resistor to help reduce radio frequency interference, ensuring smooth engine performance.
- Tapered Seat Type: Features a tapered seat type for a secure fit and reliable performance in your vehicle.
ACDelco – Iridium Spark Plug: Original Equipment Replacement (Part No.41-110)
from
$11.99
ACDelco GM Original Equipment Iridium Spark Plugs are designed, engineered, and tested to rigorous standards, and are backed by General Motors. They are our latest in spark plug technology and an exact replacement for your vehicle’s original components. Iridium composition provides a high melting point and great strength, and provides excellent wear resistance and durability. ACDelco GM Original Equipment parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some ACDelco GM Original Equipment parts may have formerly appeared as GM Genuine Parts (OE) or ACDelco Professional.
Product Features:
See More
Product Features:
- 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
ACDelco – Professional RapidFire Performance Platinum Spark Plug (Part No.F1000575798ACD)
from
$7.35
Designed for today’s most popular autos, ACDelco’s RapidFire Platinum Spark Plugs fit engines using conventional plugs, as well as newer vehicles requiring platinum performance.
Product Features:
See More
Product Features:
- Ribless insulator that improves the plug-to-boot seal.
- Tapered center wire electrode with a platinum pad reduces the firing diameter and helps improve the firing efficiency by concentrating and directing energy needed to fire the plug with less voltage.
- Solid state suppressor with two-piece glass and brass seal helps reduce radio frequency interference, meters spark plug energy to help provide long electrode life and seals against compression leakage. When compared to conventional spark plugs:
- Reduced sparking voltage.
- Greater corrosion protection.
- Longer life and improved efficiency.
NGK – Iridium IX Spark Plug: Single Iridium Fine Wire, TR5IX (Part No.7397)
from
$11.99
NGK Iridium IX spark plugs are specifically designed for the performance enthusiast. Iridium IX provides outstanding acceleration, high fuel efficiency and durability. NGK Iridium IX plugs offer extreme ignitability and exceptional anti-fouling. Tapered cut ground electrode provides improved starting, idling and throttle response. The Iridium fine wire center electrode’s durability is six times harder than platinum. Iridium alloy’s extremely high melting point is perfect for today’s engines. For even greater performance consider upgrading to an NGK Ruthenium HX plug.
Product Features:
See More
Product Features:
- SINGLE IRIDIUM TIP: Fine wire 0.6 millimeter iridium tip center electrode ensures high durability and a consistently stable spark
- IRIDIUM ALLOY CENTER ELECTRODE: Iridium’s density (6x that of platinum) and extremely high melting point is perfect for modern high efficiency engines
- TAPERED CUT GROUND ELECTRODE: Reduced quenching design produces outstanding ignitability, improved acceleration, fuel efficiency and durability
- SOLID COPPER CORE: 98% pure copper core offers superior heat dissipation, conductivity and ultra wide heat ranges
- TRIVALENT METAL PLATING: Delivers superior anti-corrosion and anti-seizing properties, ensuring ease of installation and removal
- RECOMMENDED USAGE: Modified or high performance applications, or as an upgrade to OE nickel alloy spark plugs
- Outstanding Acceleration and High Fuel Efficiency: NGK Iridium IX spark plugs are engineered to deliver exceptional acceleration and improved fuel efficiency, making them ideal for performance enthusiasts.
- Extreme Ignitability and Anti-Fouling: These spark plugs offer extreme ignitability and exceptional resistance to fouling, ensuring reliable performance in various driving conditions.
DENSO – Iridium Power Spark Plug (Part No.F1000177171ND)
from
$12.74
DENSO Iridium Power spark plugs represent a performance breakthrough. The laser-welded center electrode is only 0.4mm in diameter – the slimmest iridium electrode in the industry. The taper-cut side electrode complements the design, delivering reliable spark energy under the most gruelling pressures and temperatures. DENSO engineers used the power of this miraculous metal to produce an iridium center electrode that is only 0.4mm in diameter. With its superior thermal qualities, this whisker-fine electrode is capable of taking the most extreme heat and punishment. This breakthrough was matched to one of DENSO’s most famous innovations, the patented U-Groove ground electrode. The combination of these two features resulted in the Iridium Power® plug, one of the most advanced and innovative spark plugs on the market.
Product Features:
See More
Product Features:
- Tapered cut, U-Groove ground electrode
- 0.4mm iridium center electrode
- 360-degree laser welding assembly process
- Required ignition voltage reduced
- Unsurpassed center electrode durability
- Available for many performance and power sports applications, including Corvette, Viper, and Harley-Davidson The Iridium Power plug delivers greater spark energy while demanding significantly less secondary required voltage from the ignition system.
NGK – Ruthenium HX High Ignitability Spark Plug: DFE Tip Design, TR5AHX (Part No.94567)
from
$14.99
NGK Ruthenium HX High Ignitability spark plugs are the best in class plug for todays modern vehicles. Patented Ruthenium technology offers the most advance tip technology and delivers the highest performance and life expectancy. Created from advanced OE technology as a high ignitability plug; Ruthenium HX spark plugs come with patented, specialized OEM DFE and PSPE tip designs. NGK Ruthenium HX High Ignitability spark plugs provide a more complete fuel burn resulting in a quicker throttle response, smoother idle and better cold starts. Ruthenium center electrode provides industry leading durability.
Product Features:
See More
Product Features:
- HIGH IGNITABILITY DOUBLE FINE ELECTRODE DESIGN: Combines 0.6 millimeter ruthenium center with opposed fine wire platinum ground electrode
- RUTHENIUM ALLOY CENTER ELECTRODE: NGK’s patented ruthenium technology produces maximum performance, ignitability & durability at high temperatures
- PLATINUM PIN TYPE GROUND ELECTRODE: Provides more complete fuel burn, quicker throttle response, smoother idle and better cold starts
- SOLID COPPER CORE: 98% pure copper core offers superior heat dissipation, conductivity and ultra wide heat ranges
- TRIVALENT METAL PLATING: Delivers superior anti-corrosion and anti-seizing properties, ensuring ease of installation and removal
- RECOMMENDED USAGE: Modern vehicles using OE DFE type spark plugs or for those seeking an aftermarket plug with the latest OE technology
- Specialized OEM Tip Designs: Features DFE and PSPE tip designs for enhanced ignitability and efficiency.
- Industry-Leading Durability: Ruthenium center electrode ensures long-lasting performance and reliability.
ACDelco – Double Platinum Spark Plug: Original Equipment Replacement (Part No.41-983)
from
$9.79
ACDelco GM Original Equipment Double Platinum Spark Plugs are designed, engineered, and tested to rigorous standards, and are backed by General Motors. With a copper core and double platinum pads on the center electrode, these plugs are designed to deliver long-lasting performance. ACDelco GM Original Equipment parts are the true OE parts installed during the production or validated by General Motors for GM vehicles. Some ACDelco GM Original Equipment parts may have formerly appeared as GM Genuine Parts (OE) or ACDelco Professional.
Product Features:
See More
Product Features:
- One-piece, fired-in suppressor seal blends three glass types for a gas-tight seal that helps reduce radio frequency and engine interference, regulate spark plug energy, and protect against compression pressures for long life
- In 08232019_LegalReviewCataloguingStatements
- Pure copper core results in cooler electrode temperature for maximized durability and fouling resistance
- 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
NGK – OE Series Laser Iridium Spark Plug: Fine Wire Tip Design, IZTR5B11 (Part No.1465)
from
$15.79
NGK Laser Iridium spark plugs offer the best combination of performance and longevity. Engineered specifically for OE applications, Laser Iridium spark plugs are tested to the highest standards to ensure quality and durability. Iridium tipped center electrode provides durability six times harder than platinum. NGKs high grade pure alumina ceramic and 98 percent pure copper core prevents the spark plug from overheating while providing reliable starts. Most Laser Iridium spark plugs feature a platinum pad on the ground electrode for even wear in distributorless ignition systems.
Product Features:
See More
Product Features:
- ACTUAL OE or EQUIVALENT DESIGN: OEM quality construction fine wire iridium alloy center electrode provides consistent performance
- IRIDIUM ALLOY CENTER ELECTRODE: Iridium’s density (6x that of platinum) and extremely high melting point is perfect for modern high efficiency engines
- PLATINUM TIP GROUND ELECTRODE: Unless OE specified, platinum protection at the ground electrode provides excellent ignitability and service life
- SOLID COPPER CORE: 98% pure copper core offers superior heat dissipation, conductivity and ultra wide heat ranges
- TRIVALENT METAL PLATING: Delivers superior anti-corrosion and anti-seizing properties, ensuring ease of installation and removal
- RECOMMENDED USAGE: Best for vehicles with OE fine wire iridium alloy plugs
- Superior Durability: The iridium-tipped center electrode is six times harder than platinum, ensuring long-lasting performance and reliability.
- OE Application Specific: Engineered specifically for Original Equipment (OE) applications, ensuring a perfect fit and optimal performance.
- Fine Wire Tip Design: The fine wire tip design of the IZTR5B11 model enhances ignition efficiency and performance.
DENSO – Double Platinum Spark Plug: OE Performance, lasts 60K+ Miles, TJ14R-P15 (Part No.5071)
from
$9.99
Manufactured to the strictest OE performance, durability and emissions standards.
Product Features:
See More
Product Features:
- OE grade platinum on both center and ground electrods
- Premium shell construction with machine-rolled threads
- Superior thermal conductivity
- Sustained spark performance over 60,000 miles
- Reduced secondary required voltage, increased ignition efficiency
- Satisfied customers, reduced shop comebacks
- Double Platinum
Autolite – Double Platinum Spark Plug: Platinum Firing, Superior Durability, Longer Life (Part No.APP5245)
from
$6.79
With over 100 years of engineering expertise and more than 11 billion plugs sold, Autolite delivers exceptional quality. Designed and engineered in the USA, these spark plugs feature platinum-to-platinum firing, virtually eliminating gap erosion and reducing misfires. The OE design and full-platinum tips on both the center and side electrodes optimize engine performance for a longer life and improved fuel economy. The platinum ball welding process ensures a consistent point of contact for enhanced adhesion, while the tapered seat type further contributes to the plug’s superior durability.
Product Features:
See More
Product Features:
- Works to optimize engine performance for a longer life and improved fuel economy
- OE design
- Full-platinum tips; platinum on both the center and side electrodes to promote reduced gap wear
- Platinum ball welding process provides a consistent point of contact for enhanced adhesion
- Engineered in the USA: Developed with over 100 years of engineering expertise, ensuring high-quality and reliable performance.
- Exceptional Quality: With more than 11 billion plugs sold, Autolite delivers trusted and proven quality in every spark plug.
NGK – OE Series V-Power Nickel Spark Plug: V-Groove Tip Design, TR5 (Part No.2238)
from
$4.49
NGK V-Power spark plugs offer reliable performance and improved ignitability over standard nickel plugs. Engineered specifically for OE applications, the special V-cut nickel alloy center electrode and concave ground electrode of NGK’s V-Power spark plug increases ignitability providing quicker starts and smoother idle. NGK’s legendary high grade alumina silicate ceramic creates a stronger insulator for optimal dielectric performance. Trivalent metal plating ensures superior anti-corrosion and anti-seizing properties.
Product Features:
See More
Product Features:
- ACTUAL OE or EQUIVALENT DESIGN: OEM quality construction nickel alloy center electrode with V-groove provides consistent performance
- RECOMMENDED USAGE: Best for vehicles with OE nickel alloy plugs, not recommended on vehicles with factory precious metal plugs
- NGK’s OE CERAMIC TECHNOLOGY: High grade alumina silicate ceramic creates a stronger insulator for optimal dielectric performance
- SOLID COPPER CORE: 98% pure copper core offers superior heat dissipation, conductivity and ultra wide heat ranges
- COLD-ROLLED THREADS: Prevents cross-threading and damage to cylinder heads
- TRIVALENT METAL PLATING: Delivers superior anti-corrosion and anti-seizing properties, ensuring ease of installation and removal
- Enhanced Ignitability: The V-cut nickel alloy center electrode and concave ground electrode design of NGK V-Power spark plugs provide quicker starts and smoother idle.
- OE Application Specific: Engineered specifically for Original Equipment (OE) applications, ensuring compatibility and reliable performance.
- V-Groove Tip Design: The unique V-groove tip design of the center electrode enhances ignitability and overall engine performance.
Autolite – Copper Spark Plug: Delivers Quick Starts, Good Fuel Economy, Smooth Acceleration (Part No.5245)
from
$3.49
With over 100 years of engineering expertise and over 11 billion plugs sold, Autolite continues to set the standard in spark plug technology. Designed and engineered in the USA, these spark plugs feature a copper cored center electrode for higher thermal conductivity, a specially engineered high nickel alloy center and ground electrode for extended life, and high alumina ceramic for high dielectric strength. Additionally, the leak-proof, heat-fused internal seal ensures durability, while the multi-rib insulator prevents flash-over, making these plugs a reliable choice for enhancing your vehicle’s performance.
Product Features:
See More
Product Features:
- Copper cored center electrode for higher thermal conductivity
- Specially engineered high nickel alloy center and ground electrode for extended life
- High alumina ceramic for high dielectric strength
- Leak proof, heat fused internal seal for durability
- Multi-rib insulator prevents flash-over
- Quick Starts: The Autolite Copper Spark Plug ensures quick engine starts, enhancing your vehicle’s reliability and performance.
- Good Fuel Economy: Designed to optimize fuel efficiency, these spark plugs help you save on fuel costs while maintaining excellent engine performance.
- Smooth Acceleration: Experience smoother acceleration with the high-quality engineering of Autolite Copper Spark Plugs, providing a more responsive driving experience.
DENSO – Double Platinum Spark Plug: OE Performance, lasts 60K+ Miles, PTJ16R15 (Part No.5077)
from
$9.49
Manufactured to the strictest OE performance, durability and emissions standards.
Product Features:
See More
Product Features:
- OE grade platinum on both center and ground electrods
- Premium shell construction with machine-rolled threads
- Superior thermal conductivity
- Sustained spark performance over 60,000 miles
- Reduced secondary required voltage, increased ignition efficiency
- Satisfied customers, reduced shop comebacks
- Double Platinum
ACDelco – Spark Plug Wire (Part No.357D)
from
$31.99
ACDelco GM Original Equipment Spark Plug Wires consist of a single wire, encased in an insulating material, connectors, and insulating boots, and are GM-recommended replacements for your vehicle’s original components. The wires transfer high voltage pulses between the voltage source, the distributor, and the spark plug. These original equipment wires have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.
Product Features:
See More
Product Features:
- Durable to help transfer high voltage pulses without damage
- GM-recommended replacement part for your GM vehicle’s original factory component
- Offering the quality, reliability, and durability of GM OE
- Manufactured to GM OE specification for fit, form, and function
ACDelco – Spark Plug Wire (Part No.356F)
from
$28.99
ACDelco GM Original Equipment Spark Plug Wires consist of a single wire, encased in an insulating material, connectors, and insulating boots, and are GM-recommended replacements for your vehicle’s original components. The wires transfer high voltage pulses between the voltage source, the distributor, and the spark plug. These original equipment wires have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.
Product Features:
See More
Product Features:
- Durable to help transfer high voltage pulses without damage
- GM-recommended replacement part for your GM vehicle’s original factory component
- Offering the quality, reliability, and durability of GM OE
- Manufactured to GM OE specification for fit, form, and function
ACDelco – Original Equipment Ignition Wire (Part No.F1030575906ACD)
from
$22.14
Built to match the original equipment in length and fit, ACDelco OES Ignition Wires offer a performance advantage over many aftermarket products.
Product Features:
See More
Product Features:
- ACDelco ignition wires are designed to be like Original in critical areas such as cable length and diameter, terminal design and insulator position
- Have broad coverage available for most vehicles on the road today from 1980 to present
- Provide a high degree of Radio Frequency Interference (RFI) suppression
- Are designed to offer fit, form and function for optimum performance
- Kevlar reinforced fiberglass core in select sets for increased strength
- Core sheathed in radio-static absorbent material for increased RFI suppression
- Wire-wound, stainless steel alloy conductor for maximum spark delivery and RFI suppression on most applications
- A layer of conductive heat-resistant latex for added durability
- Insulating rubber-based compound inner jacket helps minimize voltage drop and enhance durability
- Thick silicone outer jacket for excellent heat resistance
- Limited lifetime warranty*
ACDelco – Specific FitSpark Plug Wire (Part No.349V)
from
$19.99
ACDelco GM Original Equipment Spark Plug Wires consist of a single wire, encased in an insulating material, connectors, and insulating boots, and are GM-recommended replacements for your vehicle’s original components. The wires transfer high voltage pulses between the voltage source, the distributor, and the spark plug. These original equipment wires have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.
Product Features:
See More
Product Features:
- Durable to help transfer high voltage pulses without damage
- GM-recommended replacement part for your GM vehicle’s original factory component
- Offering the quality, reliability, and durability of GM OE
- Manufactured to GM OE specification for fit, form, and function
ACDelco – Spark Plug Wire (Part No.350R)
from
$24.99
ACDelco GM Original Equipment Spark Plug Wires consist of a single wire, encased in an insulating material, connectors, and insulating boots, and are GM-recommended replacements for your vehicle’s original components. The wires transfer high voltage pulses between the voltage source, the distributor, and the spark plug. These original equipment wires have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.
Product Features:
See More
Product Features:
- Durable to help transfer high voltage pulses without damage
- GM-recommended replacement part for your GM vehicle’s original factory component
- Offering the quality, reliability, and durability of GM OE
- Manufactured to GM OE specification for fit, form, and function
Popular 2012 GMC Sierra 2500 HD Spark Plugs Categories
2012 GMC Sierra 2500 HD Spark Plugs
Maybe you’re in the middle of a full rebuild of that 2012 GMC Sierra 2500 HD. Maybe you just need a couple of Spark Plugs. Either way, Advance Auto Parts has 23 different Spark Plugs in our inventory ranging from $2.99 to $31.99. That means you can find the exact parts or products you need to keep that 2012 GMC Sierra 2500 HD running smoothly.
Spark Plugs are only as good as their brand. We stock 6 different brands to make sure you have plenty of trusted parts to choose from for your 2012 GMC Sierra 2500 HD. ACDelco, Autolite, and NGK are just some of the brands we stock. Search for brands you know or compare prices and reviews to help you decide!
We know you’ll find the perfect Spark Plugs for your 2012 GMC Sierra 2500 HD, but don’t take our word for it – read our customer ratings and reviews and buy with confidence. Out of the 4,774 reviews in this category, some of the top rated parts include PT16TT Platinum TT Spark Plug with 4.6 stars and Copper Plus Spark Plug: Dependable Performance, OE Replacement, RS12YC with 4.6 stars.
So if you’re in the market for aftermarket Spark Plugs to keep your 2012 GMC Sierra 2500 HD rolling for years to come, look no further. Shop online and have your products shipped direct to your door, or pick up at the nearest Advance Auto Parts location today!
Spark Plugs Brands To Make Your 2012 GMC Sierra 2500 HD Last
Simple repair, complete replacement, or a full rebuild. No matter the job, your 2012 GMC Sierra 2500 HD demands trusted brand parts and products to keep it running. Many trusted brands of Spark Plugs make up Advance Auto Parts’ inventory, and all are ready to help make your Sierra 2500 HD the best it can be. Be sure to browse some of our top Spark Plugs brands and parts.
Popular NGK Spark Plugs
We carry NGK parts in our stock across Spark Plugs categories, plus more. For a 2012 GMC Sierra 2500 HD, our most popular NGK Spark Plugs include:
Top 2012 GMC Sierra 2500 HD Spark Plugs from Autolite
Autolite products are another trusted brand when it comes to Spark Plugs for your 2012 GMC Sierra 2500 HD. Popular Autolite parts include:
from
$3.49
(117)
Copper Spark Plug: Delivers Quick Starts, Good Fuel Economy, Smooth Acceleration
Spark Plugs
from
$6.79
(18)
Double Platinum Spark Plug: Platinum Firing, Superior Durability, Longer Life
Spark Plugs
FAQs for 2012 GMC Sierra 2500 HD Spark Plugs
What are the most purchased Spark Plugs for the 2012 GMC Sierra 2500 HD?
Out of 23 Spark Plugs for the 2012 GMC Sierra 2500 HD, the most popular in our inventory are:
from
$11.99
This product is not rated
Iridium Spark Plug: Original Equipment Replacement
Spark Plugs
from
$9.99
This product is not rated
Iridium XP Finewire Spark Plug: Improved Durability, More Focused Ignition
Spark Plugs
What are the top-rated 2012 GMC Sierra 2500 HD Spark Plugs?
Top-rated Spark Plugs for your 2012 GMC Sierra 2500 HD based on customer reviews/ratings are:
from
$2.99
(51)
Copper Plus Spark Plug: Dependable Performance, OE Replacement, RS12YC
“Good price.”
from
$10.99
(46)
Iridium TT Spark Plug: Ultimate Endurance and Power, 0.4mm Iridium Tip, last 100K+ Miles, IT16TT
“Immediately fixed misfire issue, and seems to increase power also”
