Johnson / Evinrude / OMC 503748 replacement parts

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Spark Plug Wire Lead Kit - Sierra
Your Price: $32.99
Save: $6.85
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Part # 18-8800-1 ValueShip™ Eligible
Lead Wire Kit
Electrical System
Mallory Plug Wire Set 9-28020
Holiday Sale Price: $29.99
Save: $8.66
(22% Off $38.65)
Part # 9-28020 ValueShip™ Eligible
Replaces Original Equipment Manufacturer(OEM):Merc / OMC
Replaces Original Equipment Manufacturer # (OEM #):84-816761Q5 / 84-813720A5 / 503748
Fits Application:4 cyl.
(representative photo)
Mallory Plug Wire Set 9-28028
Holiday Sale Price: $36.99
Save: $10.23
(21% Off $47.22)
Part # 9-28028 ValueShip™ Eligible
Hurry! Only 1 left in stock
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Replaces Original Equipment Manufacturer(OEM):OMC
Replaces Original Equipment Manufacturer # (OEM #):503749
Fits Application:4 cyl. 3.0L, 3.0L HO w/Delco 1990-97
Average Customer Review for Spark Plug Wire Lead Kit - Sierra
Based On 9 Reviews | Write Review
Great product
by David from Thunder Bay, Ontario on August 21, 2013
great product
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by Christopher from Oconomowoc, Wisconsin on May 27, 2013
They are not like what is pictured here, but they work fine.
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overall very good product
by Robert from Nashville, Tennessee on September 24, 2012
Product arrived and was as advertised. Overall very good quality. Good solid connection to spark plugs. Coil wire was hard to make stay on center post of distributor cap. Otherwise I would give it a 5. Would definitely buy again.
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Spark Plug Wire Set - Mercruiser 120
by Jason from Trenton, Ontario on July 08, 2012
I have been using these wires now for the past month, about 40 hours or so and they seem to work great. No problems with miss fires, they snap on easily and hold tight to distributor and spark plugs as they were designed. If I had to change anything it would be the lengths. The set I replaced had better lengths for each plug, especially the shorter ones, which could be a bit shorter. I suppose they're designed for a variety of different engines as well, one size fits most. It's not a deal breaker at all. Very satisfied nevertheless. I will be using the same wires again for any replacements I do in the future.
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by Bryan from Big Lake, Minnesota on May 15, 2012
Replaced on 89 3.0L Mercruiser. Picture shows they are yellow, but I received blue ones. Like the blue color either way, and they fit well.
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Nice Wire Kit
by Charles from Williamsport, Pennsylvania on April 02, 2012
These wires are great for the Price.They are also nice looking.They cant be beat for the money.Thanks I-boats
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very good
by Jim from Warsaw, Illinois on August 29, 2011
fast delivery.
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Review for Sierra 18-8800 Wire Lead Kit
by a Customer on July 10, 2009
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Review for Sierra 18-8800 Wire Lead Kit
by a Customer on June 23, 2009
Well what can I say other then they look good... The coil wire rubber on the coil is rather small and hard to get on the coil....
(1 of 1 people found this review helpful)
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Average Customer Review for Mallory Plug Wire Set 9-28020
Based On 3 Reviews | Write Review
distributor clips way to large
by Craig from Ottawa, Ontario on October 19, 2014
The wires are very nice, and the plug caps fit the spark plugs nicely. Unfortunately who ever put the clips on for the distributor and the coil used too large a size. They can't even be bent small enough to fit the distributor properly. Even after clipping bits off of the copper to try and bend the ends in tighter, they still won't fit... MAYBE wire tie them on to each post... Don't buy them.
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fit great
by Wade from Lexington, South Carolina on July 30, 2014
Highly recommend
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Bad fit
by Robert from Rainier, Oregon on June 15, 2014
The quality of the plug wires is good, however I had to bend the clips for them to stay on the distributor cap and the boots do not cover or attach in any fashion to the distributor cap. These were purchased for a Marine environment, a boat that is in the salt water a lot. Now I need to remove them on probably a monthly basis and clean and apply silicone to the distributor so it does not corrode. This creates another step to take prior to running the boat each time.
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