1985 Oldsmobile 98 Spark Plugs

Essential 1985 Oldsmobile 98 Spark Plugs

Dorman – Help – Spark Plug Non-Foulers – 14mm Tapered Seat (Part No.42006)

Spark Plug Non-Foulers - 14mm Tapered Seat

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$6.99
This spark plug non fouler is designed for easy installation on specified vehicles to protect spark plugs from fouling and damage. It is engineered for durability and reliable performance.

Product Features:
  • Direct replacement – this spark plug non fouler is designed for easy installation to protect spark plugs from fouling and damage on specified vehicles.
  • Ideal solution – this non-fouler preserves spark plug life and is a reliable replacement for an original non-fouler that has failed due to corrosion
  • Durable construction – made from quality components to ensure reliable performance and a long service life
  • Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience
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Dorman – Help – Spark Plug Non-Foulers – 14mm Gasket Seat (Part No.42000)

Spark Plug Non-Foulers - 14mm Gasket Seat

from

$5.49
This spark plug non fouler is designed for easy installation on specified vehicles to protect spark plugs from fouling and damage. It is engineered for durability and reliable performance.

Product Features:
  • Direct replacement – this spark plug non fouler is designed for easy installation to protect spark plugs from fouling and damage on specified vehicles.
  • Ideal solution – this non-fouler preserves spark plug life and is a reliable replacement for an original non-fouler that has failed due to corrosion
  • Durable construction – made from quality components to ensure reliable performance and a long service life
  • Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience
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ACDelco – Professional Copper Core Spark Plugs (Part No.F1000612350ACD)

Professional Copper Core Spark Plugs

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$4.93
ACDelco Professional Series Copper Core Conventional Spark Plugs are an economical choice for solid performance.

Product Features:
  • Has a copper-core center electrode that helps provide improved heat transfer to the tip, giving you the reliability you’re looking for while improving its resistance to low-speed carbon fouling
  • Precisely engineered and manufactured to provide everyday reliability and efficient performance
  • The hot-tip insulator heats fast and fires hot
  • The nickel-chrome alloy on the ground electrode and center electrode sheathing resists wear from spark erosion and the corrosive environment of the combustion chamber
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Autolite – Platinum Spark Plug: Fires Cleaner, Easier Starts, Quicker Acceleration (Part No.AP606)

Platinum Spark Plug: Fires Cleaner, Easier Starts, Quicker Acceleration

from

$4.79
Autolite has over 100 years of engineering experience and has sold over 11 billion plugs. Designed and engineered in the USA, Autolite Platinum spark plugs provide a center wire platinum firing tip which provides reduced gap erosion, fewer misfires, better performance and increased durability. Consider upgrading to Autolite Double Platinum or Iridium XP spark plugs for increased performance.

Product Features:
  • High nickel alloy side electrode maintains precise gap
  • Full platinum tip assures virtually no gap erosion for long life
  • Necked-down center electrode fires quicker, cleaner with less voltage for easier starts, quicker acceleration and improved fuel economy (as compared to standard plugs)
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NGK – Iridium IX Spark Plug: Single Iridium Fine Wire, XR45IX (Part No.7293)

Iridium IX Spark Plug: Single Iridium Fine Wire, XR45IX

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$8.29
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:
  • 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
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DENSO – Iridium Power Spark Plug: Maximum Spark Energy, 0.4mm Iridium Tip, IT16 (Part No.5325)

Iridium Power Spark Plug: Maximum Spark Energy, 0.4mm Iridium Tip, IT16

from

$11.79
Increased performance with World’s smallest Iridium Center Eletrode (0.4mm).

Product Features:
  • World’s smallest Iridium Center Electrode (0.4mm) for improved spark for maximum combustion
  • Patented 360-degree laser welding assembly process
  • U-groove and taper cut ground electrode to maximize flame propagation.
  • Withstands temperatures greater than 4000° Fahrenheit
  • Burnished nickel plating for high temperature endurance and superior corrosion resistance
  • Wide range of part numbers for thousands of applications, including classic and collector cars
  • Iridium Power
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E3 – DiamondFIRE Automotive Spark Plug: More Power, Saves Gas (Part No.E3.52)

DiamondFIRE Automotive Spark Plug: More Power, Saves Gas

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$6.49
The Spark Plugs are the product of years of fundamental research in the combustion field. The unique patented electrode configuration of these new The spark plugs increases the amount of combustion pressure created during each power stroke of an engine, which results in a marked increase in power output, fuel economy, and reduced emissions in all gasoline engines. E3.52 is a 14mm, 0.375 reach plug with a gasket seat. It fits a wide variety of GM applications from the 50s to early 80s, and is generally the correct plug for older small block Chevrolet engines. The automotive plugs have three legs securing the Diamond FIRE electrode to the shell. This allows for excellent heat transfer, and helps to create more turbulence in the cylinder. The patented Diamond FIRE side wire is proven to increase power, reduce fuel consumption and improve hydrocarbon emissions in long-term use.

Product Features:
  • E3’s Diamond Fire edge to edge ground electrode provides maximum performance with increased efficiency and a faster more complete burn.
  • Smoother Acceleration & Idle – The faster flame initiated by the The spark plug results in a more complete burn of the ingested fuel charge. More pressure is created against the piston more fuel is put to work
  • Energy – Power output improved up to 6% on average in the typical operating ranges. Results will vary.
  • Efficiency – The “diamond shaped” side wire electrode projects the combustion spark in a way that more quickly ignites the air/fuel mixture, thereby creating a significantly faster and larger flame kernel. The result is that more fuel is put to work durin
  • E3’s patented Diamond Fire Technology provides a cleaner burning combustion, which translates into fuel savings and reduced engine carbon deposits
  • The Spark Plugs are pre-gapped at the factory and cannot be adjusted.
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ACDelco – Conventional Nickel Tip Copper Core Spark Plug: Reduces Corrosion & Maximizes Durability (Part No.R45S)

Conventional Nickel Tip Copper Core Spark Plug: Reduces Corrosion & Maximizes Durability

from

$4.99
ACDelco Gold (Professional) Conventional Spark Plugs are a high quality alternative to Original Equipment (OE) parts. These conventional spark plugs are designed for reliability and efficient performance. Their high-quality copper cores and outstanding suppression characteristics deliver reliable performance. They are also available for Marine applications. These premium aftermarket replacement spark plugs are manufactured to meet your expectations for fit, form, and function. ACDelco Gold (Professional) parts are manufactured to meet your expectations for fit, form, and function, making them a smart choice for General Motors vehicles, as well as most makes and models, including special applications. These high-quality parts are backed by General Motors. Some ACDelco Gold parts may have formerly appeared as ACDelco Professional.

Product Features:
  • Black Onyx coating helps reduce corrosion
  • Copper core provides great heat transfer and helps maximize plug durability
  • Available for use in Marine applications
  • Some ACDelco Gold parts may have formerly appeared as ACDelco Professional
  • Premium aftermarket replacement part
  • Manufactured to meet specifications for fit, form, and function for General Motors vehicles as well as most makes and models
  • Nickel Center Electrode Tip: Features a nickel center electrode tip for enhanced conductivity and performance.
  • Resistor Type: Equipped with a resistor to help reduce radio frequency interference, ensuring smooth engine operation.
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DENSO – U-Groove Spark Plug: OE Performance, lasts 30K+ Miles, T16EPR-U15 (Part No.5023)

U-Groove Spark Plug:  OE Performance, lasts 30K+ Miles, T16EPR-U15

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$2.99
OE Performance, lasts 30K+ Miles, T16EPR-U15. The unique U-Groove ground electrode is one of the finest features of DENSO spark plugs, designed to fire leaner mixtures than conventional plugs for improved ignitability. Precision machine-rolled threads reduce seizing and cross-threading in delicate aluminum heads, ensuring a secure fit. With a wide range of part numbers, these spark plugs cater to thousands of applications, including classic and collector cars. Built to last twice as long as most conventional plugs, each unit is 100% pre-fired to assure reliable operation. The center electrode tip is made of durable nickel, and the seat type is tapered, making it a reliable choice for enhanced efficiency in emission gas purification and fuel consumption.

Product Features:
  • Patented U-groove ground electrode design fires leaner mixtures than conventional plugs
  • Precision machine-rolled threads reduce seizing and cross-threading in delicate aluminum heads
  • Wide range of part numbers for thousands of applications, including classic and collector cars
  • Lasts twice as long as most conventional plugs
  • 100% pre-fired to assure reliable operation
  • U-Groove Conventional
  • Durable Nickel Center Electrode Tip: Provides long-lasting performance and improved efficiency in emission gas purification and fuel consumption.
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Autolite – Platinum Spark Plug: Fires Cleaner, Easier Starts, Quicker Acceleration (Part No.AP86)

Platinum Spark Plug: Fires Cleaner, Easier Starts, Quicker Acceleration

from

$4.99
Autolite has over 100 years of engineering experience and has sold over 11 billion plugs. Designed and engineered in the USA, Autolite Platinum spark plugs provide a center wire platinum firing tip which provides reduced gap erosion, fewer misfires, better performance and increased durability. Consider upgrading to Autolite Double Platinum or Iridium XP spark plugs for increased performance.

Product Features:
  • High nickel alloy side electrode maintains precise gap
  • Full platinum tip assures virtually no gap erosion for long life
  • Necked-down center electrode fires quicker, cleaner with less voltage for easier starts, quicker acceleration and improved fuel economy (as compared to standard plugs)
See More

NGK – Iridium IX Spark Plug: Single Iridium Fine Wire, XR5IX (Part No.7355)

Iridium IX Spark Plug: Single Iridium Fine Wire, XR5IX

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:
  • 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
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NGK – OE Series V-Power Nickel Spark Plug: V-Groove Tip Design, XR45 (Part No.4536)

OE Series V-Power Nickel Spark Plug: V-Groove Tip Design, XR45

from

$4.99
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:
  • 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
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ACDelco – Professional Platinum Spark Plug (Part No.F1000575821ACD)

Professional Platinum Spark Plug

from

$14.70
An ideal plug for vehicles requiring platinum performance or older vehicles calling for conventional plugs, ACDelco’s Professional Platinum Spark Plugs can give up to 100,000 miles of service in some applications.

Product Features:
  • Dual platinum tip for improved resistance to spark erosion and corrosive combustion chamber environment.
  • A platinum center electrode and a platinum pad lower the ignition voltage demand.
  • 3-piece Fired-In-Suppressor Seal (FISS) helps reduce radio frequency interference, meters spark plug energy to help provide long electrode life and seals against compression leakage.
  • Designed with a corrosion-resistant shell.
  • Spark gap remains virtually unchanged during the life of the plug.
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Autolite – Copper Spark Plug: Delivers Quick Starts, Good Fuel Economy, Smooth Acceleration (Part No.847)

Copper Spark Plug: Delivers Quick Starts, Good Fuel Economy, Smooth Acceleration

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$3.49
With over 100 years of engineering expertise and over 11 billion plugs sold, Autolite continues to innovate with its copper spark plugs. Designed and engineered in the USA, these plugs feature a copper-glass seal that bonds the insulator, terminal post, and center electrode together, ensuring full required voltage at the spark gap with a 100% leak-proof, gas-tight seal. The multi-rib insulator reduces the risk of flash-over, while the one-piece terminal post adds strength and durability. Additionally, the built-in resistor minimizes radio frequency interference (RFI) and electrode erosion, making these spark plugs a reliable choice for enhancing your vehicle’s performance.

Product Features:
  • Copper-glass seal bonds insulator, terminal post center electrode together; assures full required voltage at spark gap; gas-tight seal (100% leak proof)
  • Multi-rib insulator reduces danger of “flash-over”
  • One-piece terminal post adds strength
  • Resistor reduces radio frequency interference (RFI) and electrode erosion
  • Quick Starts: The Autolite Copper Spark Plug ensures quick engine starts, enhancing your vehicle’s reliability and performance.
  • Good Fuel Economy: Engineered to optimize fuel efficiency, these spark plugs help you save on fuel costs while maintaining excellent performance.
  • Smooth Acceleration: Experience smoother acceleration with Autolite’s advanced copper spark plugs, designed to provide consistent and reliable ignition.
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DENSO – PTF16TT Platinum TT Spark Plug (Part No.4509)

PTF16TT Platinum TT Spark Plug

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$5.79
Twin-Tip design enables faster flame propagation for more complete combustion.
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Accel – Universal Fit Super Stock 8mm Suppression; Spark Plug Wire Set (Part No.4040R)

Universal Fit Super Stock 8mm Suppression; Spark Plug Wire Set

from

$65.99
These ACCEL wire sets are a true performance upgrade replacement for OE types. Efficient delivery of spark energy for a good price. Silicone boots with black wire contain zinc-plated steel terminals. Noise suppression core. Set contains 8 plug wires with coil lead.

Product Features:
  • 7mm And 8mm High Gloss Silicone Jacket
  • 450° F Rated Silicone Jacket
  • Stainless Steel Plug Terminals
  • RFI Suppression For Street Driven Applications
  • Custom-fit Universal And Import Coverage
  • High-strength Fiberglass Braid Construction
  • Pre And Post HEI Vehicles
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Accel – Universal Fit Super Stock 8mm Suppression; Spark Plug Wire Set (Part No.4040)

Universal Fit Super Stock 8mm Suppression; Spark Plug Wire Set

from

$63.99
These ACCEL wire sets are a true performance upgrade replacement for OE types. Efficient delivery of spark energy for a good price. Silicone boots with black wire contain zinc-plated steel terminals. Noise suppression core. Set contains 8 plug wires with coil lead.

Product Features:
  • 7mm And 8mm High Gloss Silicone Jacket
  • 450° F Rated Silicone Jacket
  • Stainless Steel Plug Terminals
  • RFI Suppression For Street Driven Applications
  • Custom-fit Universal And Import Coverage
  • High-strength Fiberglass Braid Construction
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Accel – 8Mm Super Stock Copper Uni (Part No.4038B)

8Mm Super Stock Copper Uni

from

$72.99
These ACCEL Super Stock wire sets are a true performance upgrade replacement for OE types. Efficient delivery of spark energy for a good price. Silicone boots with zinc-plated steel terminals.

Product Features:
  • Tinned copper core allows virtually no resistance
  • Great for points and magneto
  • 450 Degree Wire Temperature Rating
  • Meets Or Exceeds OE Boot Temperature Rating
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MSD Ignition – Wire Set; Super Conductor; Multi-Angle Plug; HEI Cap (Part No.31189)

Wire Set; Super Conductor; Multi-Angle Plug; HEI Cap

from

$129.99
For engines with late-model type (HEI spark plug top) distributor caps. Multi-angle boots and terminals installed on one end. 90 degree distributor boots and terminals included.

Product Features:
  • Extra Long 8.5mm Wires So You Can Cut To Your Designed Length
  • Distributor Cap – Boots and Terminals Included
  • Includes Mini-Stripper-Crimper For Factory Style Crimps
  • Size Includes [8] 90 Degree Boots/Terminal Ends
  • Durable outer sleeve is a proprietary compound for resistance to high heat or abrasion
  • Stainless steel terminals feature dual crimp tabs to grip wire conductor and outer jacket separately
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1985 Oldsmobile 98 Spark Plugs

Maybe you’re in the middle of a full rebuild of that 1985 Oldsmobile 98. Maybe you just need a couple of Spark Plugs. Either way, Advance Auto Parts has 20 different Spark Plugs in our inventory ranging from $2.49 to $65.99. That means you can find the exact parts or products you need to keep that 1985 Oldsmobile 98 running smoothly.

Spark Plugs are only as good as their brand. We stock 9 different brands to make sure you have plenty of trusted parts to choose from for your 1985 Oldsmobile 98. E3, ACDelco, 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 1985 Oldsmobile 98, but don’t take our word for it – read our customer ratings and reviews and buy with confidence. Out of the 643 reviews in this category, some of the top rated parts include PTF16TT Platinum TT Spark Plug with 5.0 stars and Copper Spark Plug: Delivers Quick Starts, Good Fuel Economy, Smooth Acceleration with 4.0 stars.

So if you’re in the market for aftermarket Spark Plugs to keep your 1985 Oldsmobile 98 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 1985 Oldsmobile 98 Last

Simple repair, complete replacement, or a full rebuild. No matter the job, your 1985 Oldsmobile 98 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 98 the best it can be. Be sure to browse some of our top Spark Plugs brands and parts.

FAQs for 1985 Oldsmobile 98 Spark Plugs

What are the most purchased Spark Plugs for the 1985 Oldsmobile 98?

Out of 20 Spark Plugs for the 1985 Oldsmobile 98, the most popular in our inventory are:
Rapidfire Spark Plug
from $7.99
This product is not rated
Rapidfire Spark Plug
Spark Plugs
Universal Fit Super Stock 8mm Suppression; Spark Plug Wire Set
from $63.99
(25)
Universal Fit Super Stock 8mm Suppression; Spark Plug Wire Set
Spark Plug Wire Set Cut To Fits

What are the top-rated 1985 Oldsmobile 98 Spark Plugs?

Top-rated Spark Plugs for your 1985 Oldsmobile 98 based on customer reviews/ratings are:
PTF16TT Platinum TT Spark Plug
from $5.79
(5)
PTF16TT Platinum TT Spark Plug
“Reasonably priced at Advance Auto Parts”
Copper Spark Plug: Delivers Quick Starts, Good Fuel Economy, Smooth Acceleration
from $3.49
(3)
Copper Spark Plug: Delivers Quick Starts, Good Fuel Economy, Smooth Acceleration
“I purchased the spark plugs for use on my 1978 Trans Am. I’m sure they’ll perform fine as always.”
Platinum Spark Plug - Enhanced Durability & Fuel Efficiency
from $5.99
(2)
Platinum Spark Plug – Enhanced Durability & Fuel Efficiency
“Good quality NGK Platinum spark plugs”