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2019-2026 GMC Sierra 1500 spark plug & gap

The Sierra 1500 came with more than one engine, and they don't all take the same plug. Find your engine below for the exact part number, gap, and where to buy it.

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2.7L I4 · 2019-2026L3B

Spark plug part number

  • ACDelco41-106IP
  • NGK94956

Confirmed from retailer catalog + NGK · verified Jul 2026.

Gap

0.03 in (0.76 mm)

We don't stock a reviewed plug for this engine yet. Search the confirmed part number on Amazon — it's the safest way to land on the right plug.

Find ACDelco 41-106IP on Amazon
Where this came from
  • RockAuto retailer catalog — 2020 GMC Sierra 1500 2.7L L4 Turbocharged spark plug fitment page — source
  • newparts.com NGK parts catalog — NGK 94956 (ILNFR9B7G) fitment table — source

4.3L V6 · 2019-2021LV3

Spark plug part number

  • ACDelco41-114
  • NGK90220

Confirmed from ACDelco + retailer catalog · verified Jul 2026.

Gap

0.04 in (1.02 mm)

We don't stock a reviewed plug for this engine yet. Search the confirmed part number on Amazon — it's the safest way to land on the right plug.

Find ACDelco 41-114 on Amazon
Where this came from
  • AutoPartsPrime genuine-GM-parts catalog — spark plug assembly OE 12622441 fitment table (ACDelco 41-114) — source
  • RockAuto retailer catalog — 2019 Chevrolet Silverado 1500 4.3L V6 spark plug fitment page (shared LV3 engine with the T1XX Sierra) — source

5.3L V8 · 2019-2026L84

Spark plug part number

  • ACDelco41-114
  • NGK90220

Confirmed from ACDelco + retailer catalog · verified Jul 2026.

Gap

0.04 in (1.02 mm)

We don't stock a reviewed plug for this engine yet. Search the confirmed part number on Amazon — it's the safest way to land on the right plug.

Find ACDelco 41-114 on Amazon
Where this came from
  • AutoPartsPrime genuine-GM-parts catalog — spark plug assembly OE 12622441 fitment table (ACDelco 41-114) — source
  • RockAuto retailer catalog — 2020 GMC Sierra 1500 5.3L V8 spark plug fitment page — source

6.2L V8 · 2019-2026L87

Spark plug part number

  • ACDelco41-114
  • NGK90220

Confirmed from ACDelco + retailer catalog · verified Jul 2026.

Gap

0.04 in (1.02 mm)

We don't stock a reviewed plug for this engine yet. Search the confirmed part number on Amazon — it's the safest way to land on the right plug.

Find ACDelco 41-114 on Amazon
Where this came from
  • AutoPartsPrime genuine-GM-parts catalog — spark plug assembly OE 12622441 fitment table (ACDelco 41-114) — source
  • RockAuto retailer catalog — 2019 GMC Sierra 1500 6.2L V8 spark plug fitment page — source

Part number and gap confirmed against two independent maker sources — never changed by what an affiliate link pays us. Heat range is shown per brand on purpose: a Denso number and an NGK number don't mean the same thing, so never compare them directly. Your owner's manual is always the final word.