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Spark Gap Tester 91-63998A1 

# 525-91-63998A1
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Spark Gap Tester 91-63998A1

Provides a visual indication of spark/coil efficiency.

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NOTICE: Any images shown are representational ONLY and do not necessarily depict the actual part or included items in a particular part or kit. Mercury has been known to remove items depicted in product images such as screws or gaskets from kits they make without notification. For any product content, fitment or application questions on this part please call Mercury Product Support at 920-929-5040.
MSRP: $47.62
Your Price: $47.62
 You Save: 0% off MSRP!

NOTE: This Item is a Non-Stocked, Special Order, OEM Mercury Part.
ALL OEM Mercury parts may take up to 7-10 days to ship. All OEM Mercury parts are NON-RETURNABLE! Orders placed on all OEM Mercury parts are NON-REFUNDABLE! Please contact us with the part number and we can assist you with more accurate delivery time estimate.
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Additonal Info On This Product:

Applications Where This Item Is Used:

4/5 HP - 4 (2-STROKE)200/225/250 (3.0L) SEAPRO/MARATHON EFI - 3.0L EFI MARATHON
200/225/250/200 PRO XS (3.0L)(MECHANICAL) - 225 (DFI) 3.0L20/25/JET 20 SEAPRO/MARATHON 15XD SUPER 15/JET 20) (2-STROKE) - 20 (2 CYL.)
XR10 AND 10/SEAPRO/MARATHON 10/15/VIKING 10 - 10 SEA PRO8/9.9/13.5/15 (2-STROKE) - 8
135/150/175/200 XR6 MAGNUM III 105-140 JET - XR-6OUTBOARDS SEC G MISCELLANEOUS PARTS MANUAL - Exhaust / Cooling Systems and Extension Kits
135/140/150/200/XR6/MAGNUM III/140JET (2.5L)(CARB) - V-1356/8/SAILMATE 9.9/SAILPOWER 15 HP - 8
200/225/250 (3.0L) SEAPRO/MARATHON EFI - 225 (3.0L EFI)2/2.5/3.3HP 2-STROKE - 3.3
25 (4-STROKE) - 25 (4-STROKE)OUTBOARDS SEC G MISCELLANEOUS PARTS MANUAL - Instruments-Gauges and Components
OUTBOARDS SEC G MISCELLANEOUS PARTS MANUAL - Trim / Tilt / Lift Systems and Components135/140/150/200/XR6/MAGNUM III/140JET (2.5L)(CARB) - V-140 (INTERNATIONAL)
40 ITALY/45 BODENSEE 50/50 BIGFOOT 4-STROKE - 40 ITALY (4-STROKE)4/5/6 4-STROKE - 6 (4-STROKE)
135/150/175/200 XR6/MAGNUM III/140 JET (CARB) - V-17510/15 SEAPRO/MARATHON-10/15 VIKING (2-STROKE) - 10 SEA PRO
175 XR2 JET DRIVE - 175XR2 JET DRIVE (PUMP)40 ITALY/45 BODENSEE 50/50 BIGFOOT 4-STROKE - 45 BODENSEE (4-STROKE)
200/225 (3.0L DFI) - 225 (DFI)2/2.5/3.3 HP 2-STROKE - 3.3
135/150/175 DFI (2.5L) - V-175 DFI (2.5L)4/5/6 4-STROKE - 5 (4-STROKE)
135/150/175/200 XR6/MAGNUM III/140 JET (CARB) - V-1504/5HP 2-STROKE - 5 (2-STROKE)
6/8/9.9/15 HP - 840/50 (3 CYLINDER) 2-STROKE - 50 (3 CYL.)
200/225 DFI (3.0L) - 225 (DFI) 3.0L200/225/250 (3.0L) SEAPRO/MARATHON EFI - 225 (3.0L EFI) SEAPRO
40/50 HP JET 30 (3 CYL.) - 40 (3 CYL.)8/9.9/13.5/15 (2-STROKE) - 6
250 EFI LONG (3.0L) - 250 LONG (3.0L)(EFI)XR/MAGNUM 10/SEAPRO/MARATHON 10/SEAPRO/MARATHON 15 - 10 MAGNUM
4/5 HP - 5 (2-STROKE)XR10 AND 10/SEAPRO/MARATHON 10/15/VIKING 10 - 10 MARATHON
4/5/6 4-STROKE - 4 (4-STROKE)XR10 AND 10/SEAPRO/MARATHON 10/15/VIKING 10 - XR10
150/175/200 EFI - V-175 (EFI)20/25/JET 20 SEAPRO/MARATHON 15XD SUPER 15/JET 20) (2-STROKE) - 25, 25 SEA PRO, SUPER 15 (2 CYL.)
6/8/SAILMATE 9.9/SAILPOWER 15 HP - 6175 PROXS (2.5L) - 175 PROXS (2.5L)
200/225 DFI (3.0L)(DTS) - 225 (3.0L-DFI)(DTS)135/150/175/200 XR6 MAGNUM III 105-140 JET - MAGNUM III
200/225 (3.0L DFI) - 200 (DFI)200/225/250 (3.0L) SEAPRO/MARATHON EFI - 3.0L EFI SEAPRO
6/8/SAILMATE 9.9/SAILPOWER 15 HP - 15XR/MAGNUM 10/SEAPRO/MARATHON 10/SEAPRO/MARATHON 15 - XR10
250XB (3.0L EFI) - 250XB (3.0L EFI)55/60/45 JET/60 BIGFOOT (2-STROKE) - 45 JET
75/90 HP 65 JET (3 CYLINDER) - 65 JET210 CARB M2 JET DRIVE - 210 CARB M2 JET DRIVE (PUMP)
135/150/175 DFI (2.5L) - 110 Jet (2.5L)30/40 HP - 30 (2 CYL.)
200/225/250/200 PRO XS (3.0L)(MECHANICAL) - 200 PRO XS (DFI) 3.0L115/135/150 DFI (2.5L) - V-135 DFI (2.5L)
225 AND 225 SEAPRO/MARATHON (3.0L CARB) - 225 SEAPRO (3.0L CARB)75/90 HP 65 JET (3 CYLINDER) - 65 JET (3 CYL.)
40/50 JET 30 (3 CYLINDER) 2-STROKE - 30 JET (3 CYL.)XR/MAGNUM 10/SEAPRO/MARATHON 10/SEAPRO/MARATHON 15 - 15 MARATHON
2.5/3 HP(NON-SHIFT) - 2.52/2.5/3.3HP 2-STROKE - 2
135/150/175/200 XR6/MAGNUM III/140 JET (CARB) - XR-6210 CARB M2 JET DRIVE - 210 CARB M2 JET DRIVE (POWERHEAD)
135/150/175/200 XR6 MAGNUM III 105-140 JET - V-175150 PRO XS (2.5L) - 150 Pro XS (2.5L)
3.3 HP - 3.3200/225 DFI (3.0L) - 225 (DFI)
OUTBOARDS SEC G MISCELLANEOUS PARTS MANUAL - Electrical200/225 (3.0L)(MECHANICAL) - 225 (DFI) 3.0L
135/150/175/200 XR6 MAGNUM III 105-140 JET - V-150100/115/125 HP 80 JET (4 CYLINDER) - 80 JET
MERCRUISER SEC G MISCELLANEOUS - Exhaust / Cooling Systems and Extension Kits20/25/JET 20/SUPER 15/15XD/25 SEAPRO/MARATHON 2 CYLINDER - 20 (2 CYL.)
135/140/150/200/XR6/MAGNUM III/140JET (2.5L)(CARB) - XR-610/15 SEAPRO/MARATHON-10/15 VIKING (2-STROKE) - 10 VIKING
175XR2 JET DRIVE - 175XR2 JET DRIVE (PUMP)20/25/JET 20 - 20/25 SEAPRO/MARATHON (2-STROKE) - 20 (2 CYL.)
6/8/9.9/15 HP - 6XR/MAGNUM 10/SEAPRO/MARATHON 10/SEAPRO/MARATHON 15 - 10 MARATHON
40/50 JET 30 (3 CYLINDER) 2-STROKE - 40 (3 CYL.)135/150/175/200 XR6 MAGNUM III 105-140 JET - 140 JET
20/25/JET 20 SEAPRO/MARATHON 15XD SUPER 15/JET 20) (2-STROKE) - 15 MARATHON XD135/150/175/200 XR6 MAGNUM III 105-140 JET - V-200
8/9.9/13.5/15 (2-STROKE) - 15225/250 3.0L EFI - 250 (3.0L EFI)
8 BODENSEE 4-STROKE - 8 (BODENSEE) 4-STROKE (International)135/140/150/200/XR6/MAGNUM III/140JET (2.5L)(CARB) - MAGNUM III
20/25/JET 20/SUPER 15/15XD/25 SEAPRO/MARATHON 2 CYLINDER - 25, 25 SEA PRO, SUPER 15 (2 CYL.)XR/MAGNUM 10/SEAPRO/MARATHON 10/SEAPRO/MARATHON 15 - 10 SEA PRO
40/50 (3 CYLINDER) 2-STROKE - 40 (3 CYL.)150/175/200 EFI (2.5L) - V-150 EFI (2.5L)
4/5/6 4-STROKE - 5 (4-STROKE) JCI225/250 EFI (3.0L) - 250 (3.0L EFI)
55/60/45 JET/60 BIGFOOT (2-STROKE) - 55 (3 CYL.)55/60 JET 40/45 (3 CYLINDER) - 55 (3 CYL.)
20/25/JET 20 SEAPRO/MARATHON 15XD SUPER 15/JET 20) (2-STROKE) - 20 JETXR/MAGNUM 10/SEAPRO/MARATHON 10/SEAPRO/MARATHON 15 - 15 SEA PRO
6/8/9.9/15 HP - 15100/115/125 HP 80 JET (4 CYLINDER) - 100 (4 CYL.)
200/225/250 (3.0L) EFI - 250 (3.0L EFI)55/60/45 JET/60 BIGFOOT (2-STROKE) - 60 (3 CYL.) BIGFOOT
55/60 JET 40/45 (3 CYLINDER) - 60 (3 CYL.) BIGFOOT200/225 DFI (3.0L) - 200 (DFI)
20/25/JET 20/SUPER 15/15XD/25 SEAPRO/MARATHON 2 CYLINDER - 15 SEA PRO (XD)2/2.5/3.5 4-STROKE - 3.5 (4-STROKE) Carb JCI
55/60 JET 40 (3 CYLINDER) - 55 (3 CYL.)10/15 SEAPRO/MARATHON-10/15 VIKING (2-STROKE) - 10 MARATHON
30/40 (2 CYLINDER) 2-STROKE - 30 (2 CYL.)40/50 /45 BODENSEE/50 BIGFOOT 4-STROKE - 40 (4-STROKE)
200 OPTIMAX V6 DFI - 200 PRO XS (DFI) 3.0L210 CARB JET DRIVE - 210 CARB JET DRIVE (POWERHEAD)
135/150/175/200 XR6 MAGNUM III 105-140 JET - 105 JETMERCRUISER SEC G MISCELLANEOUS - Miscellaneous
100/115/125 HP 80 JET (4 CYLINDER) - 115 (4 CYL.)40/50 /45 BODENSEE/50 BIGFOOT 4-STROKE - 45 BODENSEE (4-STROKE)
20/25/JET 20 - 20/25 SEAPRO/MARATHON (2-STROKE) - 20 JET20/25/JET 20 - 20/25 SEAPRO/MARATHON (2-STROKE) - 25 (2 CYL.)
135/150 DFI (2.5L) - V-135 DFI (2.5L)XR10 AND 10/SEAPRO/MARATHON 10/15/VIKING 10 - 10 VIKING
20/25/JET 20/SUPER 15/15XD/25 SEAPRO/MARATHON 2 CYLINDER - 15 MARATHON XD75/90 HP 65 JET (3 CYLINDER) - 75 (3 CYL.)
225/225 SEAPRO/MARATHON (3.0L) CARB - 225 MARATHON (3.0L CARB)135/140/150/200/XR6/MAGNUM III/140JET (2.5L)(CARB) - 140 JET
55/60 JET 40 (3 CYLINDER) - 60 (3 CYL.)20/25/JET 20 SEAPRO/MARATHON 15XD SUPER 15/JET 20) (2-STROKE) - 25, 25 MARATHON, SUPER 15 (2 CYL.)
135/150/175/200 XR6/MAGNUM III/140 JET (CARB) - 140 JET2/2.5/3.5 4-STROKE - 2.5 (4-STROKE) Carb
20/25/JET 20/SUPER 15/15XD/25 SEAPRO/MARATHON 2 CYLINDER - 20 JET2.5/3 HP(NON-SHIFT) - 3
135/150/175/200 XR6/MAGNUM III/140 JET (CARB) - MAGNUM III20/25/JET 20 SEAPRO/MARATHON 15XD SUPER 15/JET 20) (2-STROKE) - 15 SEA PRO (XD)
200/225/250/200 PRO XS (3.0L)(MECHANICAL) - 250 (DFI) 3.0L225 AND 225 SEAPRO/MARATHON (3.0L CARB) - 225 (3.0L CARB)
40/50 /45 BODENSEE/50 BIGFOOT 4-STROKE - 50 BIGFOOT (4-STROKE)115/125 HP 80 JET (4 CYLINDER) - 80 JET
75/90 HP 65 JET (3 CYLINDER) - 90 (3 CYL.)FORCE 25HP - 25 H.P. (1997)
55/60 JET 40 (3 CYLINDER) - 40 JET135/140/150/200/XR6/MAGNUM III/140JET (2.5L)(CARB) - V-200
210 CARB JET DRIVE - 210 CARB JET DRIVE (PUMP)6/8/SAILMATE 9.9/SAILPOWER 15 HP - 9.9
2/2.5/3.3 HP 2-STROKE - 2.540 ITALY/45 BODENSEE 50/50 BIGFOOT 4-STROKE - 50 BIGFOOT (4-STROKE)
200/225/250 (3.0L) SEAPRO/MARATHON EFI - 200 (3.0L EFI)40/50 HP JET 30 (3 CYL.) - 30 JET (3 CYL.)
115/125 HP 80 JET (4 CYLINDER) - 115 (4 CYL.)6/8/9.9/15 HP - 9.9
55/60 JET 40/45 (3 CYLINDER) - 40 JET150/175/200 EFI - V-150 (EFI)
2/2.5/3.3HP 2-STROKE - 2.5XR10 AND 10/SEAPRO/MARATHON 10/15/VIKING 10 - 10 MAGNUM
55/60 JET 40/45 (3 CYLINDER) - 45 JETFORCE 25 HP - 25 H.P. (1996)
135/140/150/200/XR6/MAGNUM III/140JET (2.5L)(CARB) - V-1508/9.9/13.5/15 (2-STROKE) - 9.9
200/225/250 (3.0L) SEAPRO/MARATHON EFI - 250 (3.0L EFI)135/150/175/200 XR6/MAGNUM III/140 JET (CARB) - V-200
150/200 EFI (2.5L) - V-150 EFI (2.5L)150/200 EFI (2.5L) - V-150 EFI (2.5L)
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