GMC EF350 Spark Plug

Your GMC EF350 will be happy to know that the search for the right Spark Plug products you’ve been looking for is over! Advance Auto Parts has 4 different Spark Plug for your vehicle, ready for shipping or in-store pick up. The best part is, our GMC EF350 Spark Plug products start from as little as $2.49.

When it comes to your GMC EF350, you want parts and products from only trusted brands. Here at Advance Auto Parts, we work with only top reliable Spark Plug product and part brands so you can shop with complete confidence. Some of our top Spark Plug product brands are Champion and AC Delco. We’re sure you will get the right product to keep that EF350 running for a long time.

We even have reviews of our OEM and aftermarket Spark Plug products to help you buy with confidence. Hear from other customers via the 20 reviews on parts for your GMC EF350.

Shop online, find the best price on the right product, and have it shipped right to your door. If you prefer to shop in person for the right Spark Plug products for your EF350, visit one of our local Advance Auto Parts locations and you’ll be back on the road in no time!

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Spark Plug for a GMC EF350

Use the fitment form at the top of the page to select your exact year and engine type for your GMC EF350.

  • Conventional Spark Plug

    ACDelco - Conventional Spark Plug (Part No. R43)

    Description
    ACDelco Professional Conventional Spark Plugs are designed for reliability and efficient performance, and are a high quality replacement for many vehicles on the road today. 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.

    Product Features:
    • Black Onyx coating helps reduce corrosion
    • Copper core provides great heat transfer and helps maximize plug durability
    • Ribbed suppressor seal extends resistance and helps prevent spark 'flash over' and misfires
    • Nickel-chrome alloy sheathing helps prevent corrosion on center electrode
    • Available for use in Marine applications
    5.0
    Read 2 review(s)

    Review snapshot ® by PowerReviews

    5.0
    5.0
    • 5
      5
      2020-06-25
      5
      5

      would buy again

      would buy again

      Submitted 2020-06-25

      By William

      From Undisclosed

      good plug

      Bottom Line NULL

      good plug

      By William from Undisclosed

      BOTTOM LINE NULL

    • 5
      5
      2017-11-25
      5
      5

      Great for the price

      Great for the price

      Submitted 2017-11-25

      By Glenn

      From undisclosed

      Worked fine for preventive maintenance.

      Bottom Line NULL

      Worked fine for preventive maintenance.

      By Glenn from undisclosed

      BOTTOM LINE NULL

    from $3.99

  • Copper Plus Small Engine- Boxed - J8C

    Champion - Copper Plus Small Engine- Boxed - J8C (Part No. 841)

    Description
    Dependable performance. This Champion spark plug features a copper core electrode that provides increased conductivity and heat control for good overall wear.

    Product Features:
    • Resists fouling
    • Superior corrosion resistance
    • Dependable and proven performance
    • Increased conductivity and heat control for good overall wear
    5.0
    Read 3 review(s)

    Review snapshot ® by PowerReviews

    5.0
    5.0
    • 5
      5
      2021-03-11
      5
      5

      Great Product

      Great Product

      Submitted 2021-03-11

      By Gene

      From Undisclosed

      A tried and true product that can always be counted on.

      Bottom Line NULL

      A tried and true product that can always be counted on.

      By Gene from Undisclosed

      BOTTOM LINE NULL

    • 4
      4
      2021-03-08
      4
      4

      Yeap!

      Yeap!

      Submitted 2021-03-08

      By Laurie

      From Undisclosed

      Snowblower had wrong spark plug in it. Spark Plugs are not universal - install the right part. You might be surprised how well your equipment works ?

      Bottom Line NULL

      Snowblower had wrong spark plug in it. Spark Plugs are not universal - install the right part. You might be surprised how well your equipment works ?

      By Laurie from Undisclosed

      BOTTOM LINE NULL

    • 5
      5
      2020-08-27
      5
      5

      exact replacement

      exact replacement

      Submitted 2020-08-27

      By Bradley

      From Undisclosed

      Installed as replacements in an engine from the late 30's, early 40's. My local store had these in stock which made the repairs fast and easy.

      Bottom Line NULL

      Installed as replacements in an engine from the late 30's, early 40's. My local store had these in stock which made the repairs fast and easy.

      By Bradley from Undisclosed

      BOTTOM LINE NULL

    from $3.79

  • Copper Plus Small Engine- Boxed - RJ8C

    Champion - Copper Plus Small Engine- Boxed - RJ8C (Part No. 871)

    Description
    Dependable performance. This Champion spark plug features a copper core electrode that provides increased conductivity and heat control for good overall wear.

    Product Features:
    • Resists fouling
    • Superior corrosion resistance
    • Dependable and proven performance
    • Increased conductivity and heat control for good overall wear
    5.0
    Read 1 review(s)

    Review snapshot ® by PowerReviews

    5.0
    5.0
    • 5
      5
      2017-12-20
      5
      5

      Yes

      Yes

      Submitted 2017-12-20

      By Mike

      From undisclosed

      Building a 327 for a 1953 Chevy pickup

      Bottom Line NULL

      Building a 327 for a 1953 Chevy pickup

      By Mike from undisclosed

      BOTTOM LINE NULL

    from $2.49

  • Copper Resistor Spark Plug

    Autolite - Copper Resistor Spark Plug (Part No. 303)

    Description
    Autolite® Copper Spark Plugs are manufactured to deliver quick starts, improved fuel economy and smooth acceleration. Autolite® spark plugs are the best alternative to OE spark plugs, offering OE form, fit and function for all makes and models, both foreign and domestic, at a value price. Autolite provid es the automotive aftermarket and Original Equipment manufacturers with the highest quality ignition products and is the leading supplier of spark plugs.
    4.5
    Read 3 review(s)

    Review snapshot ® by PowerReviews

    4.5
    4.5
    • 5
      5
      2020-10-01
      5
      5

      Works as it should

      Works as it should

      Submitted 2020-10-01

      By Mike

      From Undisclosed

      Works as it should

      Bottom Line NULL

      Works as it should

      By Mike from Undisclosed

      BOTTOM LINE NULL

    • 5
      5
      2020-06-20
      5
      5

      Worked great

      Worked great

      Submitted 2020-06-20

      By Chris

      From Undisclosed

      Simple spark plug change.

      Bottom Line NULL

      Simple spark plug change.

      By Chris from Undisclosed

      BOTTOM LINE NULL

    • 5
      5
      2019-08-08
      5
      5

      Fast service

      Fast service

      Submitted 2019-08-08

      By John

      From Undisclosed

      Fast service and exactly what I ordered

      Bottom Line NULL

      Fast service and exactly what I ordered

      By John from Undisclosed

      BOTTOM LINE NULL

    from $2.99

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