Ignitions and Electrical Ignition Components

GM Performance

(S)SPARK PLUG

$17.17

SKU: G03V 19157985

Out of Stock
In Stock
Ships by Jun 19
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Beginner — under 30 min

Description

The ACDelco MR43T Marine Spark Plug is a specialty replacement plug designed for reliability and efficient performance. It is suitable for use in jet boats, inboards, outboards, and personal watercraft. The spark plug can maintain stable operating temperatures under varying loads.

Specifications include a 14mm thread size, 1.25mm thread pitch, tapered seat, and a heat range of 3. The center and ground electrodes are made of nickel, with the ground electrode featuring a single prong and a taper cut shape.

Fitment

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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

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Specifications

BrandGM Performance
Part NumberG03V 19157985

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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