1978 GMC G25 Fuel Cap Tester Adapters
Save up to 40% on original replacement 1978 GMC G25 Fuel Cap Tester Adapters. Navigate our online catalogue to find Fuel Cap Tester Adapters and other parts designed specifically to fit a 1978 GMC G25.








Fuel Cap Tester Adapter
$27.86
Out of Stock
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 4.8L 292ci L6 (3.88x4.13; 98.4x104.8);
Engine Base: 4.8L 292ci L6 (3.88x4.13; 98.4x104.8);







Fuel Cap Tester Adapter
$27.86
Out of Stock
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 4.8L 292ci L6 (3.88x4.13; 98.4x104.8);
Engine Base: 4.8L 292ci L6 (3.88x4.13; 98.4x104.8);
Vehicle Fitment Notes:
Yellow Adapter used with Stant tester 12300 and/or 12400
Yellow Adapter used with Stant tester 12300 and/or 12400







Fuel Cap Tester Adapter
$27.86
Out of Stock
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 5.7L 350ci V8 (4.00x3.48; 101.6x88.5);
Engine Base: 5.7L 350ci V8 (4.00x3.48; 101.6x88.5);







Fuel Cap Tester Adapter
$27.86
Out of Stock
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 5.7L 350ci V8 (4.00x3.48; 101.6x88.5);
Engine Base: 5.7L 350ci V8 (4.00x3.48; 101.6x88.5);
Vehicle Fitment Notes:
Yellow Adapter used with Stant tester 12300 and/or 12400
Yellow Adapter used with Stant tester 12300 and/or 12400







Fuel Cap Tester Adapter
$27.86
Out of Stock
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 6.6L 400ci V8 (4.13x3.76; 104.8x95.5);
Engine Base: 6.6L 400ci V8 (4.13x3.76; 104.8x95.5);







Fuel Cap Tester Adapter
$27.86
Out of Stock
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 6.6L 400ci V8 (4.13x3.76; 104.8x95.5);
Engine Base: 6.6L 400ci V8 (4.13x3.76; 104.8x95.5);
Vehicle Fitment Notes:
Yellow Adapter used with Stant tester 12300 and/or 12400
Yellow Adapter used with Stant tester 12300 and/or 12400