Refine Parts List
HP/ Liter/ Model# :
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HP/ Liter/ Model#

CYL

Year

Serial #

Tune-Up Kit

Tune-Up Kit With dist. Cap

[110](153cid) L[4] 1963-1966 1537370-2044033 (13)18-5250 18-5268
[120](153cid) 2.5L L[4] 1964-1989 1666601-0C853255 (26)18-5250 18-5268
[140](181cid) 3.0L L[4] 1968-1989 2508261-0C856558 (26)18-5250 18-5268
[3.0]L L[4] 1990-1995 0C856559 - 0F603999 (27)18-5262 -
[3.0] LX L[4] 1990-1995 0C856559 - 0F603999 18-5262 -
[140](194cid) L[6] 1963 1538930-1725960 18-5250 18-5269
[150](230cid) L[6] 1964-1966 1666495-2048046 (27)18-5250 18-5269
[160] (250cid) L[6] 1967-1981 2048022-5813433 18-5250 18-5269
[165] (250cid) L[6] 1967-1981 2048022-5813433 18-5250 18-5269
[200] (292cid) L[6] 1969 2453769-2712072 (13)18-5250 18-5269
[470] (224cid) L[4] 1976-1984 4208730 - 6916778 (13)18-5250 -
[485] (224cid) L[4] 1976-1984 4208730 - 6916778 (13)18-5250 -
[488] (224cid) L[4] 1976-1984 4208730 - 6916778 (13)18-5250 -
[165] (224CID) L[4] 1985-1989 6916779 & UP (13)18-5250 18-5268
[170] (224CID) L[4] 1985-1989 6916779 & UP (13)18-5250 18-5268
[190] (224CID) L[4] 1985-1989 6916779 & UP (13)18-5250 18-5268
[180]LX L[4] 1987-1989 0B436391 & UP (13)18-5250 18-5268
[180]LX L[4] 1987-1989 0B436391 & UP (13)18-5262 -
[185] (229cid) 4bbl V[6] 1983-1984 6330183 - 6919655 (13)18-5262 18-5276
[175] 4.3 (262cid) 2bbl V[6] 1985-1993 6919656-0F000877 (13)18-5274 -
[185] 4.3 (262cid) 2bbl V[6] 1985-1993 6919656-0F000877 (13)18-5274 -
[205] 4.3LX (262cid) 4bbl V[6] 1985-1996 0A331455-0F802999 (3)18-5274 -
[4.3]L Alpha(Gen+) V[6] 1996-2001 0F803000 & UP (3)18-5274 -
[4.3]L Bravo(Gen+) V[6] 1996-2001 0F803000 & UP (11)18-5274 -
[4.3]LH Alpha(Gen+) V[6] 1996-2001 0F803000 & UP (11)18-5274 -
[4.3]LH Bravo(Gen+) V[6] 1996-2001 0F803000 & UP (11)18-5274 -
[4.3]LX Alpha(Gen+) V[6] 1996-2001 0F803000 & UP (11)18-5274 -
[4.3]LX Bravo(Gen+) V[6] 1996-2001 0F803000 & UP (11)18-5274 -
[4.3]LXH Alpha(Gen+) V[6] 1996-2001 0F803000 & UP (11)18-5274 -
[4.3]LXH Bravo(Gen+) V[6] 1996-2001 0F803000 & UP (11)18-5274 -
[4.3]L EFI,262 Mag(TBI)(Gen+) V[6] 1996-1998 OF80300- 0L359999 (11)18-5278 -
[4.3]L EFI(TBI) (Gen+) V[6] 1999-2001 0l360000 & UP (11)18-5274 -
[190]GM(283cid) V[8] 1963-1964 1564539-1730903 (11)18-5252 -
[215] MCM & MIE Ford(302cid) V[8] 1970-1972 2781153-3563181 (11)18-5253 18-5267
[215] MCM & MIE Ford(302cid) V[8] 1970-1972 2781153-3563181 (17)18-5251 18-5271
[225] MCM & MIE Ford(302cid) V[8] 1973-1974 3385721-4166999 (20)18-5253 18-5267
[225] MCM & MIE Ford(302cid) V[8] 1973-1974 3385721-4166999 18-5251 18-5271
[225] MCM & MIE Ford(302cid) V[8] 1973-1974 3385721-4166999 (13)18-5254 18-5267
[233] MCM & MIE Ford(351w cid) V[8] 1975-1977 4173000-4902304 (4)18-5260 18-5275
[233] MCM & MIE Ford(351w cid) V[8] 1975-1977 4173000-4902304 (2)18-5258 18-5277
[233] MCM & MIE Ford(351w cid) V[8] 1975-1977 4173000-4902304 (4)18-5254 -
[888] 188 Ford (302cid) V[8] 1971-1977 3108723-4887829 (2)18-5254 -
[888] 188 Ford (302cid) V[8] 1971-1977 3108723-4887829 (15)18-5253 18-5267
[888] 188 Ford (302cid) V[8] 1971-1977 3108723-4887829 (30)18-5258 18-5277
[888] 188 Ford (302cid) V[8] 1971-1977 3108723-4887829 (3)18-5251 18-5271
[255] MCM & MIE Ford(351w cid) V[8] 1973-1974 3385721-4166999 (15)18-5254 -
[255] MCM & MIE Ford(351w cid) V[8] 1973-1974 3385721-4166999 (15)18-5251 18-5271
[198]/ 898 MCM & MIE GM(305cid) V[8] 1977-1982 4776402-6218461 (4)18-5251 18-5271
[198]/ 898, 5.0L GM (305cid) V[8] 1983-1984 6218462-6899057 (3)-18-5273
[200]/ 5.0L GM (305cid) V[8] 1985-1995 6218462 - F600999 (2)-18-5273
[200]/ 5.0L GM (305cid) V[8] 1987-1995 0B525982-0F600999 (15)-18-5273
[225] MCM GM (327cid) V[8] 1963-1969 1539620-2694014 (2)18-5252 18-5270
[228] MCM & MIE GM(305cid) V[8] 1977-1984 4765100 - 6218461 (2)18-5251 18-5271
[228]GM(305cid) V[8] 1985-1986 6218462-6899268 (11)-18-5273
[230]/ 5.0L/LX MIE (305cid) V[8] 1981-1995 5907058-0F600999 (11)-18-5273
[5.0]L Alpha V[8] 1998-2001 0L015751 & up (24)-18-5273
[5.0]L Bravo(Gen+) V[8] 1998-2001 0L015751 & up (13)-18-5273
[5.0]L EFI (Gen +) V[8] 1999-2001 0L331631 & up -18-5273
[250]GM(350cid) V[8] 1977 4768000 - 4908849 (2)18-5251 18-5271
[255]/ 260MCM & MIE(350cid) V[8] 1975-1982 3258728-6218461 (11)18-5251 18-5271
[255]MCM & MIE (350cid) V[8] 1975-1980 4498701-5907057 (31)18-5254 -
[260]/ 5.7L MCM & MIE [LH](350cid) V[8] 1982-1994 6218462- 0F600999 (24)-18-5273
[350]MAG/ 5.7L MCM & MIE [LH](350cid) V[8] 1982-1994 6218462- 0F600999 (24)-18-5273
[260]/ 5.7L SKI/ ALPHA/ BRAVO(350cid) V[8] 1987-1995 0B525982-0F600999 -18-5273
[350]MAG/ 5.7L SKI/ ALPHA/ BRAVO(350cid) V[8] 1987-1995 0B525982-0F600999 (15)-18-5273
[260]/ 5.7L ALPHA/ BRAVO(350cid) V[8] 1987-1995 0B525982-0F600999 -18-5273
[350]MAG/ 5.7L ALPHA/ BRAVO(350cid) V[8] 1987-1995 0B525982-0F600999 (2)-18-5273
[350]MAG, 5.7L/ LX ALPHA & BRAVO + (Gen+) V[8] 1994-2001 0F353525 & up (2)-18-5273
[5.7]L EFI & (Gen+) V[8] 1999-2001 0L325977 & up (15)-18-5273
[5.7]L SKI V[8] 1985-1995 0A338533-0F775199 (11)18-5251 18-5271
[5.7]L SKI V[8] 1985-1995 0A338533-0F775199 (11)18-5262 18-5275
[5.7]L SKI V[8] 1987-1997 0B514627-0K999999 (24)-18-5273
[5.7]L SKI V[8] 1987-1995 0B514627-0F775199 (24)-18-5273
[5.7]L SKI V[8] 1998-2001 0L002005 & up (22)-18-5273
[350]MAG MPI (Gen+) & MIE(Gen+) V[8] 1998-2001 0L302200 & up (22)-18-5273
[350] MAG HORIZON MIE V[8] 1999-2001 0L304700 & up (23)-18-5273
[350]MAG MPI SKI(Gen+) V[8] 1999-2001 0L304600 & up -18-5273
[350]MAG SKI V[8] 1991-1996 OD505450-0K040399 (20)-18-5273
[350]MAG SKI V[8] 1991-1996 OD505450-0K040399 (2)-18-5273
[350]MAG SKI V[8] 1991-1997 0D505450-0K999999 (3)-18-5273
[280] TRS(350cid) V[8] 1976 4499391-4770199 (11)18-5251 18-5271
[300] (350cid) V[8] 1985-1989 0A543604-0C622418 (22)-18-5273
[320]EFI (350cid) V[8] 1985-1989 0A543604-0C622418 (11)-18-5273
MX [6.2]L MPI (377cid) V[8] 2000-2001 0L680003 & up -18-5273
[330] MCM & MIE (454cid) V[8] 1977-1981 4623115-6083144 18-5251 18-5271
[330] 7.4L MCM & MIE(454cid) V[8] 1981-1992 5889914-0D715493 -18-5273
[340] 7.4L MCM & MIE(454cid) V[8] 1981-1992 5889914-0D715493 -18-5273
[370]TRS (454cid) V[8] 1978-1985 4179554-6721527 18-5251 18-5271
[370]TRS (454cid) V[8] 1978-1985 4883520-6721527 18-5254 -
[400]TRS (454cid) V[8] 1978-1985 4179554-6721527 18-5251 18-5271
[400]TRS (454cid) V[8] 1978-1985 4883520-6721527 18-5254 -
[440]TRS (454cid) V[8] 1978-1985 4179554-6721527 18-5251 18-5271
[440]TRS (454cid) V[8] 1978-1985 4883520-6721527 18-5254 -
[370] TRS(454cid) V[8] 1985-1987 6721528-0B714586 -18-5273
[420] (454cid) V[8] 1987-1993 0A398941-0D937011 (20)-18-5273
[425](454cid) V[8] 1987-1993 0A398941-0D937011 -18-5273
[450](454cid) V[8] 1995-1996 0F347100-0F347277 -18-5273
[454] MAG ALPHA V[8] 1986-1997 0A631894-OK999999 (20)-18-5273
[454] MAG BRAVO V[8] 1986-1997 0A631894-OK999999 -18-5273
[460]GM TRS V[8] 1983-1986 6180970-6181046 (20)18-5251 18-5271
[460]GM TRS V[8] 1983-1986 6180970-6181046 (24)18-5254 -
[500]GM &(Gen+) (502cid) V[8] 1994-2000 0F213293 & up (22)-18-5273
[502]GM MAG (502cid) V[8] 1990-1993 0C878221-OF114528 (23)-18-5273
[8.2]L GM MPI MIE (502cid) V[8] 1990-1996 0C878221-0F819619 -18-5273
[525]GM SC(502cid) V[8] 1991-1995 0D456000-0F877734 -18-5273
[525]GM SC(502cid) V[8] 1996-1997 0K000012 & up (2)-18-5273
[600]GM SC(502cid) V[8] 1991-1993 OD456489-0D763875 (11)-18-5273
[600]GM SC(502cid) V[8] 1993-2001 0D763876 & up (11)-18-5273
[500]GM BULLDOG V[8] 1990-2000 0C577003 & up -18-5273
[575]GM(540cid) V[8] 1990-2000 0C577003 & up -18-5273
[800]GM SC (572cid) V[8] 1993-2001 0D763836 & up (20)-18-5273

HP/ Liter/ Model#

CYL

Year

Serial #

Tune-Up Kit

Tune-Up Kit With dist. Cap

Notes:
  • (2) : Mallory Ignition
  • (3) : Prestolite
  • (4) : Autolite Ignition
  • (11) : Thunderbolt IV
  • (13) : Delco
  • (15) : Mercury Ignition
  • (17) : Delco EST system
  • (20) : Mercury HEI
  • (22) : Thunderbolt IV(1) System
  • (23) : Thunderbolt V Ignition
  • (24) : Thunderbolt IV(2) System
  • (26) : Delco, With conventional ign.
  • (27) : Prestolite, With conventional ign.
  • (30) : Prestolite, With screw-down cap
  • (31) : Thunderbolt IV, Thunderbolt IV(2) System
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Part # 18-5247
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GLM 72630 replacement parts
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Part # 18-5252
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Sierra
Tune up kits from Mallory and Sierra for Mercruiser engines.
Average Customer Review for Ignition Tune Up Kit - 18-5250 - Sierra
Full StarFull StarFull StarFull StarFull Star
Based On 1 Review | Write Review
Full StarFull StarFull StarFull StarFull Star
tune up kit
by Lawrence from Jamestown, New York on May 21, 2013
came on time,worked well
(2 of 2 people found this review helpful)
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Full StarFull StarFull StarFull StarFull Star
Works great
by Joe from Russellville, Kentucky on May 11, 2016
Perfect fit, fast delivery thanks
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Full StarFull StarFull StarFull StarFull Star
grate fit
by Dolores from Hudson, Ohio on August 18, 2011
this was a perfect fit and worked great
(1 of 2 people found this review helpful)
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Average Customer Review for Ignition Tune Up Kit - 18-5260 - Sierra
Full StarFull StarFull StarFull StarFull Star
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Full StarFull StarFull StarFull StarFull Star
Bought as back-up
by Brian from Delaware, Ohio on September 09, 2014
I haven't installed this but it looks like the other one thats in the boat.
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Full StarFull StarFull StarFull StarHalf Star
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Full StarFull StarFull StarFull StarFull Star
Great
by Hunter from Wynne, Arkansas on May 28, 2015
Great shipping and description
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Full StarFull StarFull StarFull StarFull Star
Received as expected!
by Matthew from Rochester, New Hampshire on May 26, 2015
Received as expected!
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Full StarFull StarFull StarEmpty StarEmpty Star
It looks great but I haven't had a chance to put on my boat.
by Thomas from Fayetteville, North Carolina on March 22, 2015
Wonderful service and fast
(1 of 2 people found this review helpful)
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Full StarFull StarFull StarFull StarFull Star
worked well
by Nathan from Freeland, Michigan on July 01, 2014
I tuned up my 1972 Mercruiser 120 with this kit engine runs much better now.
(1 of 1 people found this review helpful)
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Full StarFull StarFull StarFull StarFull Star
OMC
by James from Loveland, Colorado on June 21, 2014
Works perfect for OMC 3.0 liter
(1 of 1 people found this review helpful)
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Full StarFull StarFull StarEmpty StarEmpty Star
great service
by James from Fort Collins, Colorado on September 18, 2012
my parts were the wrong ones for my boat, but the return service was great
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Full StarFull StarFull StarFull StarFull Star
so far so good
by Mark from Wadsworth, Ohio on July 17, 2012
It's nice to get everything at once instead of hunting them down separately. I honestly don't know enough to comment on quality in a relative sort of way, but they are working well.
(1 of 1 people found this review helpful)
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Full StarFull StarFull StarFull StarFull Star
Perfect Fit!
by Dave from Greenwood, Indiana on May 01, 2012
Perfect Fit and a great price.
(1 of 1 people found this review helpful)
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Full StarFull StarFull StarFull StarFull Star
Nice tune up kit
by Charles from Williamsport, Pennsylvania on March 26, 2012
You can't get any better than this.The price is good and the parts fit great.Engine runs like a clock for being 24 years old.Thanks I-BOATS
(1 of 1 people found this review helpful)
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Full StarFull StarFull StarFull StarFull Star
tune up parts
by Howard from Clinton Corners, New York on March 04, 2012
parts were perfect fit and worked great. thank you
(1 of 1 people found this review helpful)
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Full StarFull StarFull StarFull StarFull Star
perfect. just what we ordered.
by David from Cape Girardeau, Missouri on August 24, 2011
The products were perfect and worked great! Will always look at iboats first when looking for parts or supplies!
(1 of 1 people found this review helpful)
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Full StarFull StarFull StarFull StarEmpty Star
Mercruiser 140
by John from Greensboro, Georgia on July 28, 2011
The kit was easy to install and it worked like a charm.
(3 of 3 people found this review helpful)
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Average Customer Review for Ignition Tune-Up Kit - 18-5269 - Sierra
Full StarFull StarFull StarFull StarFull Star
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Full StarFull StarFull StarFull StarFull Star
Great
by Ryan from Arab, Alabama on June 25, 2016
Great service from rep. to help me find all the parts I needed for an old boat
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Average Customer Review for Ignition Tune-Up Kit - 18-5271 - Sierra
Full StarFull StarFull StarEmpty StarEmpty Star
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Full StarFull StarFull StarFull StarFull Star
parts
by Carl from Centre, Alabama on May 11, 2016
everything was there.work great
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Full StarEmpty StarEmpty StarEmpty StarEmpty Star
Nothing worked
by Mark from Richardson, Texas on June 22, 2013
Replaced a working ignition system with these parts and the boat wouldn't even start. Put the old parts back in and the motor started right up. Poor quality, poor work manship!! Wouldn't and won't buy again!!
(1 of 1 people found this review helpful)
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Average Customer Review for Tune-Up Kit - 18-5274 - Sierra
Full StarFull StarFull StarFull StarFull Star
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Full StarFull StarFull StarFull StarFull Star
Great price and a solid product
by Brandon from Murray, Kentucky on June 02, 2014
My boat runs nice and smooth with this new cap and rotor, it is a high quality items and comes with new fasteners which is handy since sometimes the screws are close to being stripped on the old hardware. Has the needed gasket, vent, cap, and rotor.
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Full StarFull StarFull StarFull StarFull Star
Sierra-never had any problems with their product.
by Barry from South Beach, Oregon on April 24, 2014
iBoats service rates 5 stars
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Full StarFull StarFull StarFull StarFull Star
Tune-up kit
by John from Eagle River, Wisconsin on July 25, 2011
fair price, right parts
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Average Customer Review for Ignition Tune-Up Kit - 18-5275 - Sierra
Full StarFull StarFull StarFull StarFull Star
Based On 2 Reviews | Write Review
Full StarFull StarFull StarFull StarFull Star
good
by Gary from Canton, Michigan on September 16, 2013
good
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Full StarFull StarFull StarFull StarFull Star
GREAT PRODUCT!!
by Robert from McKinney, Texas on July 16, 2012
FAST SHIPPING
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Full StarFull StarFull StarFull StarFull Star
Based On 1 Review | Write Review
Full StarFull StarFull StarFull StarFull Star
Great Price!!
by Mary from Rapid City, South Dakota on May 12, 2015
Great price and exactly what I needed! Fast shipping!
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Full StarFull StarFull StarFull StarFull Star
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Full StarFull StarFull StarFull StarFull Star
good service
by Reid from Gore Bay, Ontario on August 14, 2014
everything arrived quickly
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Average Customer Review for Ignition Tune-Up Kit - 18-5280 - Sierra
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Exact match and works great!
by David from Jamesville, New York on August 15, 2013
Exact match and works great!
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Average Customer Review for Ignition Tune-Up Kit - 18-5281 - Sierra
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Based On 3 Reviews | Write Review
Full StarFull StarFull StarFull StarFull Star
Great price, products worked great
by Andrew from Rehoboth, Massachusetts on August 15, 2016
I purchased two caps and two rotors for my 1997 7.4 Mercruiser. Great fit and finish on the aftermarket products and they worked as planned.
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Full StarFull StarFull StarFull StarFull Star
Cap Rotor
by Mike from West Olive, Michigan on May 10, 2014
Good job guys can't be more happy with my order
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Full StarFull StarFull StarFull StarFull Star
Great Product!
by Michael from Davenport, Iowa on July 25, 2012
Just as good as OEM or better.
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Average Customer Review for Tune-Up Kit - 18-5283 - Sierra
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OMC Ford 2.3L Tune Up kit
by Brent from Hartwell, Georgia on August 09, 2016
It took some time to find the right tune-up kit but, this was the only place on the internet that had them. It was exactly what my boat had been whining about...
(1 of 1 people found this review helpful)
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Average Customer Review for Tune-Up Kit - 18-5273 - Sierra
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Sierra Tune-Up Kit
by Gene from Trempealeau, Wisconsin on July 14, 2015
Easy to order and fit perfectly. Would have received 5 stars if required Locktite was included in kit or mentioned the requirement in the description.
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Tune-Up Kit - Sierra
by Todd from Ogden, Utah on March 30, 2014
Tune-Up Kit - Sierra Ok no Problems.
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charming
by Frank from Bradford, Ontario on September 18, 2013
Was exactly what I required and worked like a charm.
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Great
by Robert from Marietta, Georgia on May 03, 2013
Perfect fit, and even came with new screws for the cap.. other sets I've order haven't...
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Works fine
by Richard from Mercer Island, Washington on July 13, 2012
Everything I needed - plus the plugs -
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moth ball boat
by Michael from Dardenne Prairie, Missouri on September 06, 2011
i wouldnt leave the dock without sierra parts on my boats.
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Q:
Will this work on a Mercruiser 233?
A:
We will need to know your year to confirm or serial number.


Q:
The description does not say this is for a 350 Mag MPI Horizon is this the correct part?
A:
This is the standard replacement for a Mercruiser 350 Mag model.


Q:
Will this work on a 1988 omc 3.0 stern drive?
A:
Yes this should work for your engine. It cross references with ignition tune up kit OEM number 172527.


Q:
I assume this is the correct kit to fit a 1988 Mercruiser MIE 340 ( Chevy 454 with Mercruiser Distributor )?
A:
Yes, this is the standard replacement for your Mercruiser engine.


Q:
Will this fit a 1986 Mercury 260hp 5.7?
A:
We only have this listed starting at 1987. It is for the Thunderbolt ignition system and we can match it up by your serial number. Give us a call if you need some assistance at 1-800-914-1123.


Q:
Does this tune up kit come with 4 new screws?
A:
This does not come with the screws.


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