What spark plugs does a 2019 Sierra 1500 use?
2.7L: ACDelco 41-106-IP. 4.3L, 5.3L, and 6.2L: ACDelco 41-114.
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In-depth guide
2019 GMC Sierra 1500
2019 Sierra 1500 plugs are ACDelco 41-106-IP on the 2.7L and 41-114 on the 4.3L, 5.3L, and 6.2L. The 2.7L gap is 0.026 to 0.030 in.
| Item | Figure |
|---|---|
| 2.7L L3B, VIN K | GM 12688094, ACDelco 41-106-IP. Gap 0.65 to 0.75 mm (0.026 to 0.030 in). |
| 4.3L LV3, VIN H | GM 12622441, ACDelco 41-114. Gap 0.95 to 1.10 mm (0.037 to 0.043 in). |
| 5.3L L82 VIN F, 5.3L L84 VIN D, and 6.2L L87 VIN L | GM 12622441, ACDelco 41-114. Gap 0.95 to 1.10 mm (0.037 to 0.043 in). |
Source: owner's manual / last verified 2026-10-16 (2019 GMC Sierra/Sierra Denali owner's manual, part number 23400205 A, First Printing. Gasoline pages. The book says a diesel engine uses the separate Duramax supplement. (opens in a new tab)).
Difficulty, time, and cost are estimates when this guide gives them. Torque is a cited figure, or it is left off.
Main source: 2019 GMC Sierra/Sierra Denali owner's manual, part number 23400205 A, First Printing. Gasoline pages. The book says a diesel engine uses the separate Duramax supplement. (opens in a new tab), General Motors, published 2019-01-01, read 2026-10-16.
| Item | Figure | Where it comes from |
|---|---|---|
| 2.7L L3B, VIN K | GM 12688094, ACDelco 41-106-IP. Gap 0.65 to 0.75 mm (0.026 to 0.030 in). | Replacement parts and engine specifications |
| 4.3L LV3, VIN H | GM 12622441, ACDelco 41-114. Gap 0.95 to 1.10 mm (0.037 to 0.043 in). | Replacement parts and engine specifications |
| 5.3L L82 VIN F, 5.3L L84 VIN D, and 6.2L L87 VIN L | GM 12622441, ACDelco 41-114. Gap 0.95 to 1.10 mm (0.037 to 0.043 in). | Replacement parts and engine specifications |
K is the 2.7L. H, F, D, and L are the wider-gap engines.
Do not share the 2.7L gap with the V8.
None was read.
No firing order and no plug torque were read. A diesel uses the Duramax supplement. Oil is on the oil guide.
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Part
ACDelco 41-106-IP spark plug
GM 12688094. 2.7L only.
2019 Sierra 2.7L plugs (opens in a new tab)Search Amazon.com (affiliate link) (opens in a new tab)As an Amazon Associate I earn from qualifying purchases.
Part
ACDelco 41-114 spark plug
GM 12622441. 4.3L, 5.3L, and 6.2L.
2019 Sierra V6 and V8 plugs (opens in a new tab)Search Amazon.com (affiliate link) (opens in a new tab)As an Amazon Associate I earn from qualifying purchases.
2.7L: ACDelco 41-106-IP. 4.3L, 5.3L, and 6.2L: ACDelco 41-114.
2.7L: 0.026 to 0.030 in. The others: 0.037 to 0.043 in.
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