1966 GMC I3500 Spark Plug
Browse our online catalogue to find original replacement Spark Plugs specifically designed to fit a 1966 GMC I3500.





1966 GMC I3500 Spark Plug
$3.83
10+ In Stock
Condition: New
Ships: Monday Sep. 28th
Pick-Up: Ready in 1 Hour Saturday Sep. 26th
Pick-Up: Ready in 1 Hour Saturday Sep. 26th
Required Per Vehicle: 6
Fits: 1966 GMC I3500
Equipped With:
Engine Base: 4.1L 4097cc 250ci L6 (3.88x3.53; 98.4x89.7);
Engine Base: 4.1L 4097cc 250ci L6 (3.88x3.53; 98.4x89.7);
Vehicle Fitment Notes:
Gap 0.035 (in) Plug Type Number RN14YC
Gap 0.035 (in) Plug Type Number RN14YC



1966 GMC I3500 Spark Plug
$6.35
10+ In Stock
Condition: New
Ships: Monday Sep. 28th
Pick-Up: Ready in 1 Hour Saturday Sep. 26th
Pick-Up: Ready in 1 Hour Saturday Sep. 26th
Required Per Vehicle: 6
Fits: 1966 GMC I3500
Equipped With:
Engine Base: 4.1L 4097cc 250ci L6 (3.88x3.53; 98.4x89.7);
Engine Base: 4.1L 4097cc 250ci L6 (3.88x3.53; 98.4x89.7);
Vehicle Fitment Notes:
Gap 0.035 (in) Plug Type Number RN14PMC
Gap 0.035 (in) Plug Type Number RN14PMC

1966 GMC I3500 Spark Plug
$4.35
Out of Stock
Condition: New
Required Per Vehicle: 6
Fits: 1966 GMC I3500
Vehicle Fitment Notes:
OE Style .035 Gap
OE Style .035 Gap
1966 GMC I3500 Spark Plug
$3.10
Out of Stock
Condition: New
Required Per Vehicle: 6
Fits: 1966 GMC I3500
Vehicle Fitment Notes:
Available Only While Supplies Last .035 Gap
Available Only While Supplies Last .035 Gap

1966 GMC I3500 Spark Plug
$5.63
Out of Stock
Condition: New
Required Per Vehicle: 6
Fits: 1966 GMC I3500
Vehicle Fitment Notes:
.035 Gap
.035 Gap

1966 GMC I3500 Spark Plug
$8.47
Out of Stock
Condition: New
Required Per Vehicle: 6
Fits: 1966 GMC I3500
Vehicle Fitment Notes:
.035 Gap
.035 Gap



1966 GMC I3500 Spark Plug
$10.08
Out of Stock
Condition: New
Required Per Vehicle: 6
Fits: 1966 GMC I3500
Equipped With:
Engine Base: 4.1L 4097cc 250ci L6 (3.88x3.53; 98.4x89.7);
Engine Base: 4.1L 4097cc 250ci L6 (3.88x3.53; 98.4x89.7);
Vehicle Fitment Notes:
Gap 0.035 (in) Plug Type Number RN14PYP
Gap 0.035 (in) Plug Type Number RN14PYP