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MR43T Marine Spark Plug

MR43T spark plug. Used on NON-Vortec Engine

Item Number: ACMR43T

$2.99

Item Number: ACMR43LTS

$2.99

MR44T Marine Spark Plug

MR44T (5613689) spark plug. Replaces Champion #RV12C Autolite #145 NGK #BR5FS, YR5

Item Number: ACMR44T

$2.20

41-993 (Platinum) Marine Spark Plug

AC Delco 41-993 platinum spark plug for 5.0L. 5.7L, MPI engines. This spark plug replaces part #AC41-932

Item Number: AC41-993

$13.69

41-983 (Platinum) Marine Spark Plug

AC Delco 41-983 Spark Plug. Fits MCM 496 Mag & HO and MIE 8.1L & HO.

Item Number: AC41-983

$12.00

41-110 (Iridium) Marine Spark Plug

AC Delco spark plug - LS7 / 6.0L Also fits 1997-04 LS1, LS6; 2005-10 LS2, LS3 This spark plug replaces part #AC41-985

Item Number: AC41-110

$9.95

NGK #BR6FS spark plug. Traditional spark plug, 14mm thread size, 11mm (7/16") reach, 5/8" (16mm) hex size, tapered seat, resistor, solid terminal nut, .031" (0.8mm) gap, heat range 6. NGK traditional plugs are constructed for longer life and optimum performance. Corrugated ribs prevent flashover. NGK uses only the purest alumina silicate in its ceramic insulator which give all NGK plugs greater strength and better heat transfer. Copper cored and triple sealed to further aid in heat removal and prevent interior leakage.

Item Number: BR6FS

$2.79

NGK - TR5-2238 Spark Plug

NGK #TR5-2238 spark plug. V-Power Plug, 14mm thread size, 17.55mm (.691") reach, 5/8" (16mm) hex dize, tapered seat, resistor, removable terminal nut, projected tip, V-Power (V-Grooved Centered Electrode), .040" (1.02mm) gap, heat range 5. V-Power spark plugs are a patented design by NGK to improve ignitability and reduce quenching. Ignitability is improved by the V-groove cut in the center electrode parallel to the ground electrode, this directs the spark to to the edge of the center electrode thus exposing it to more of the air/fuel mixture. Quenching is reduced in much the same manner, drawing the spark to the edge of the center and ground electrodes reduces the surface area available to quench the spark. See quenching for more info.