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Serial Number :

Model

Serial Number

Manifold

Manifold

Manifold Gasket

120 1666601 - 2046624 --18-2896
120 2046625 - 2324346 --18-2896
120 2324347 - 3377340 --18-2896
120 3377341 - 5192408 --18-2896
120 5192049 - 6229717 --18-2896
120/2.5L 6229718 & up 18-1956-1 -18-1204
140(4Cyl) 2508261 - 3332137 18-1955-1 -18-1203
140(4Cyl) 3332138 - 5157668 18-1955-1 -18-1203
140(4Cyl) 5157669 - 6229717 18-1955-1 -18-1203
140/3.0L 6229718 & up 18-1956-1 -18-1204
3.0L/3.0LX C856559 - F603999 18-1956-1 -18-1204
140(6Cyl) 1538930 - 1725960 --18-2830
150 1666495 - 2048046 --18-2830
160 2048022 - 2770031 --18-2830
165 2770032 & up 18-1960-1 -18-2830
165/170/[3.7]L 6916779 & up ---
180/190/[3.7]LX 6916779 & up ---
175/4.3L (262 CID) B527955 & up 18-1952-1 T-20952 18-2909
175/4.3L (262 CID) B527955 & up 18-1952-1 T-20952 18-2909
4.3L (GEN II) D714107 & up 18-1952-1 T-20952 18-2909
4.3L (GEN II) D714107 & up 18-1952-1 T-20952 18-2909
4.3L (GEN II) F000878 & up 18-1952-1 T-20952 18-2909
4.3L (GEN II) F000878 & up 18-1952-1 T-20952 18-2909
185 (229 CID) 6330183 & up 18-1952-1 T-20952 18-2909
185 (229 CID) 6330183 & up 18-1952-1 T-20952 18-2909
185 (262 CID) A331455 & up 18-1952-1 T-20952 18-2909
185 (262 CID) A331455 & up 18-1952-1 T-20952 18-2909
200 2453769 - 2712072 18-1960-1 -18-2830
200-GM 6218462 & up 18-1953-2 T-20953 18-0872
200-GM 6218462 & up 18-1953-2 T-20953 18-0872
200/5.0L(GM) B525982 & up 18-1953-2 T-20953 18-0872
200/5.0L(GM) B525982 & up 18-1953-2 T-20953 18-0872
205 (262 CID) A331455 & up 18-1952-1 T-20952 18-2909
205 (262 CID) A331455 & up 18-1952-1 T-20952 18-2909
205/4.3L-LX B527955 & up 18-1952-1 T-20952 18-2909
205/4.3L-LX B527955 & up 18-1952-1 T-20952 18-2909
4.3LX(GEN II) D714370 & up 18-1952-1 T-20952 18-2909
4.3LX(GEN II) D714370 & up 18-1952-1 T-20952 18-2909
4.3LX(GEN II) F001220 & up 18-1952-1 T-20952 18-2909
4.3LX(GEN II) F001220 & up 18-1952-1 T-20952 18-2909
215-FORD 2781153 & up 18-1962 -18-0183
215-FORD 2781153 & up 18-1958 -18-0183
225-FORD 3385721 & up 18-1962 -18-0183
225-FORD 3385721 & up 18-1958 -18-0183
225-S (FORD) 3385721 & up 18-1962 -18-0183
225-S (FORD) 3385721 & up 18-1958 -18-0183
225-GM 1539620 - 2278646 --18-0872
225-GM 1539620 - 2278646 N/A -18-0872
225-GM 2278647 - 2694014 --18-0872
228-GM 4765100 - 4888929 --18-0872
228-GM 4888930 - 5170008 18-1951-1 T-20951 18-0872
228-GM 4888930 - 5170008 18-1950-1 T-20950 18-0872
228-GM 5170009 - 6218461 18-1951-1 T-20951 18-0872
228-GM 5170009 - 6218461 18-1950-1 T-20950 18-0872
228-GM 6218462 & up 18-1953-2 T-20953 18-0872
228-GM 6218462 & up 18-1953-2 T-20953 18-0872
230-GM (IMBRD) 5907058 & up 18-1953-2 T-20953 18-0872
230-GM (IMBRD) 5907058 & up 18-1953-2 T-20953 18-0872
230/5.0 GM (IB) B522506 & up 18-1953-2 T-20953 18-0872
230/5.0 GM (IB) B522506 & up 18-1953-2 T-20953 18-0872
230-GM 6218462 & up 18-1953-2 T-20953 18-0872
230-GM 6218462 & up 18-1953-2 T-20953 18-0872
230/5.0L-LX (GM) B525982 & up 18-1953-2 T-20953 18-0872
230/5.0L-LX (GM) B525982 & up 18-1953-2 T-20953 18-0872
233-FORD 4173000 & up 18-1962 -18-0183
233-FORD 4173000 & up 18-1958 -18-0183
250-GM 2314301 - 2639854 --18-0872
250-GM 4768860 - 4908849 18-1951-1 T-20951 18-0872
250-GM 4768860 - 4908849 18-1950-1 T-20950 18-0872
255-FORD 3258728 & up 18-1962 -18-0183
255-FORD 3258728 & up 18-1958 -18-0183
255-GM 4175500 - 4499060 --18-0872
255-GM 4499061 - 5195908 18-1951-1 T-20951 18-0872
255-GM 4499061 - 5195908 18-1950-1 T-20950 18-0872
255-GM 5195909 & up 18-1951-1 T-20951 18-0872
255-GM 5195909 & up 18-1950-1 T-20950 18-0872
260-GM 4908850 - 6218461 18-1951-1 T-20951 18-0872
260-GM 4908850 - 6218461 18-1950-1 T-20950 18-0872
260-GM 6218462 & up 18-1953-2 T-20953 18-0872
260-GM 6218462 & up 18-1953-2 T-20953 18-0872
260/5.7L (GM) B525982 & up 18-1953-2 T-20953 18-0872
260/5.7L (GM) B525982 & up 18-1953-2 T-20953 18-0872
260-GM (INBRD) 5907058 & up 18-1953-2 T-20953 18-0872
260-GM (INBRD) 5907058 & up 18-1953-2 T-20953 18-0872
260/5.7 GM (IB) B588506 & up 18-1953-2 T-20953 18-0872
260/5.7 GM (IB) B588506 & up 18-1953-2 T-20953 18-0872
270-GM 2851074 - 3077735 --18-0872
280-GM 4176250 & up --18-0872
300MR/TRS (GM) 6668677 & up 18-1953-2 T-20953 18-0872
300MR/TRS (GM) 6668677 & up 18-1953-2 T-20953 18-0872
320-GM (EFI) A543604 & up 18-1953-2 T-20953 18-0872
320-GM (EFI) A543604 & up 18-1953-2 T-20953 18-0872
320-GM (EFI) B157603 & up 18-1953-2 T-20953 18-0872
320-GM (EFI) B157603 & up 18-1953-2 T-20953 18-0872
325-GM 2313965 - 3042730 --18-0418
325-GM 3042731 & up --18-0418
330-GM 4623115 & up --18-0418
330-GM/ 6083145 & up --18-0418
340/7.4L-GM 5889914 & up --18-0418
340/7.4L-GM 5889914 & up --18-0418
350-GM 3780450 & up --18-0418
350-GM (Mag) A635178 & up 18-1953-2 T-20953 18-0872
350-GM (Mag) A635178 & up 18-1953-2 T-20953 18-0872
350-GM (Mag) B525982 & up 18-1953-2 T-20953 18-0872
350-GM (Mag) B525982 & up 18-1953-2 T-20953 18-0872
350 (Mag-Trn.Ski) D505450 & up 18-1953-2 T-20953 18-0872
350 (Mag-Trn.Ski) D505450 & up 18-1953-2 T-20953 18-0872
370 TRS-GM 4179554 & up --18-0418
370 TRS-GM 6721528 & up 18-1957-1 T-20957 18-0418
370 TRS-GM 6721528 & up 18-1957-1 T-20957 18-0418
390-GM 2781129 - 2825059 --18-0418
400 TRS-GM 4179554 & up --18-0418
420-GM A398941 & up --18-0418
425-GM A398941 & up --18-0418
440 TRS-GM 4179554 & up --18-0418
454-GM (Mag) A631894 & up 18-1957-1 T-20957 18-0418
454-GM (Mag) A631894 & up 18-1957-1 T-20957 18-0418
454 Mag Bravo (GM) B721206 & up 18-1957-1 T-20957 18-0418
454 Mag Bravo (GM) B721206 & up 18-1957-1 T-20957 18-0418
454 Mag Bravo (Gen V) D805069 & up 18-1957-1 T-20957 18-0418
454 Mag Bravo (Gen V) D805069 & up 18-1957-1 T-20957 18-0418
460 TRS-GM 4179554 & up --18-0418
465 C849992 & up --18-0418
470 4208730 - 5520114 ---
470 4208730 - 5520114 ---
470 5520115 - 6218036 ---
500 C577254 & up --18-0418
502 Mag Bravo (GM) C878221 & up 18-1957-1 T-20957 18-0418
502 Mag Bravo (GM) C878221 & up 18-1957-1 T-20957 18-0418
502 Mag Bravo (Gen V) D824589 & up 18-1957-1 T-20957 18-0418
502 Mag Bravo (Gen V) D824589 & up 18-1957-1 T-20957 18-0418
502 EFI D840650 & up 18-1957-1 T-20957 18-0418
502 EFI D840650 & up 18-1957-1 T-20957 18-0418
525 D456000 & up --18-0418
888-FORD 3108723 & up 18-1958 -18-0183
888-FORD 3108723 & up 18-1962 -18-0183
898/198-GM 4762210 - 6218461 18-1950-1 T-20950 18-0872
898/198-GM 4762210 - 6218461 18-1950-1 T-20950 18-0872
898-GM 6218462 & up 18-1953-2 T-20953 18-0872
898-GM 6218462 & up 18-1953-2 T-20953 18-0872
5.7-GM (Ski) A338553 & up 18-1953-2 T-20953 18-0872
5.7-GM (Ski) A338553 & up 18-1953-2 T-20953 18-0872
5.7-GM (Ski) B514627 & up 18-1953-1 -18-0872
5.7-GM (Ski) B514627 & up 18-1953-2 T-20953 18-0872
5.7-GM (Ski) B525982 & up 18-1953-1 -18-0872
5.7-GM (Ski) B525982 & up 18-1953-2 T-20953 18-0872
7.4L Bravo (GM) B771113 & up 18-1957-1 T-20957 18-0418
7.4L Bravo (GM) B771113 & up 18-1957-1 T-20957 18-0418
7.4L Mag Bravo (Gen V) D603118 & up 18-1957-1 T-20957 18-0418
7.4L Mag Bravo (Gen V) D603118 & up 18-1957-1 T-20957 18-0418
7.4L w/Hurth (IB) ALL 18-1957-1 T-20957 18-0418
7.4L w/Hurth (IB) ALL 18-1957-1 T-20957 18-0418
7.4L (IB/LHR/Gen V) D715494 & up 18-1957-1 T-20957 18-0418
7.4L (IB/LHR/Gen V) D715494 & up 18-1957-1 T-20957 18-0418
8.2L w/Hurth (IB) C878221 & up 18-1957-1 T-20957 18-0418
8.2L w/Hurth (IB) C878221 & up 18-1957-1 T-20957 18-0418
8.2L (IB) (Gen V)* D857200 & up 18-1957-1 T-20957 18-0418
8.2L (IB) (Gen V)* D857200 & up 18-1957-1 T-20957 18-0418

Model

Serial Number

Manifold

Manifold

Manifold Gasket

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Price: $498.33
Discontinued
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Part # 18-1950-1
(Discontinued)
Price: $472.09
Discontinued
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Part # 18-1951-1
(Discontinued)
Price: $313.60
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Part # 18-1952-1
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Part # 18-1953-2, List Price: $409.99
(Discontinued)
(Discontinued)
Price: $493.13
Discontinued
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Part # 18-1955-1
No Reviews
(Discontinued)
Price: $516.41
Discontinued
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Part # 18-1956-2
(Discontinued)
Price: $198.72
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Part # 18-1957-1
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Price: $441.29
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Part # 18-1958-1
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Price: $967.09
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Part # 18-1960-1
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(Discontinued)
Price: $308.07
Discontinued
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Part # 18-1962-1
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(Discontinued)
Price: $1,999.99
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Part # 18-1987-1
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(Discontinued)
Price: $329.20
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Part # 18-1966
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(Discontinued)
Price: $394.51
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Part # 51212
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Price: $312.09
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Part # 51214
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V-8 SB Exhaust Manifold, MerCruiser - GLM
Price: $221.70
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Part # 51240
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Sierra
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ok
by Martin from Jonquiere, Quebec on June 28, 2014
good delivery time
(0 of 2 people found this review helpful)
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Customer Service needs a boost!
by Terry from Binbrook, Ontario on May 30, 2018
The product is as expected..............very good, as good as OEM! Had a bit of a glitch getting the delivery once the parts arrived at the Canadian Customs Brokerage Service center five days later. An e-mail to me indicated one to two days to clear customs and then to be sent to me by Canada Post. After many phone calls to the service department at iBoats, it became very evident that they could not find out the parts delivery status. It took 14 days until I finally got an e-mail stating that Canada Post would deliver the parts that day. In total it took 19 days for the parts to be delivered to my door. I installed it the same day, ready to go on the water. If it hadn't been for the delivery issues, I would have rated with "five stars". This was my first not so good experience with ordering from iBoats. I will use their online ordering again.
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satisfied customer
by James from Schertz, Texas on March 18, 2011
The eshaust manifold arrived one day before the promised date and the product was as good if not better than to OEM manifold. 100% satisfied.
(14 of 15 people found this review helpful)
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Based On 3 Reviews | Write Review
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High-quality products
by John from Easthampton, Massachusetts on October 01, 2017
Great product fast shipping
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Perfect fit
by Daniel from Madison, New Jersey on August 08, 2015
Very happy with product and fast delivery.
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Where else can you ship your own weight for $20
by Kirby from Bradenton, Florida on July 25, 2015
Sierra is not known as the best, but half the price of everything else. The kicker here was shipping. Twenty dollars for a hundred pounds of cast iron is unheard of. It arrived quickly and packed well, made in USA.
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make sure you order the right manifold
by Timothy from Port Townsend, Washington on October 06, 2013
I was happy with this manifold this time. The only problem is make sure you order the right manifold, I ordered the wrong one the first time, the discription said it would fit, I put the side plates on then tried to put the manifold on the head and it did not fit so I sent it back and they said that they will not refund my money because the side plates were installed.
(5 of 6 people found this review helpful)
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Fantastic Bargain
by Bruce from Lexington Park, Maryland on June 23, 2016
With most other companies selling the manifolds and gasket sets separately, this was a nice surprise. All gaskets, hose connectors and pipe plugs included. Was out of the box and installed in minutes. Great product. Highly recommended.
(2 of 2 people found this review helpful)
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Q:
Will this fit in place of ford 5.0 ltr 913682?
A:
We will need the cubic inch information and year in order to match up parts. If you can provide the serial number that would be the best option if you can get it.


Q:
Do the mounting surfaces of the exhaust ports need to be sanded clean of paint or do they ship clean?
A:
The mounting surfaces should still seal with or without paint.


Q:
I need 2 exhaust manifolds for 2009 4.3 mpi s/n 1a340160, what is your part # ?
A:
Part number is 864612T01 and you order two.


Q:
I want to know what comes in the mountain package?
A:
It is supplied with end cap gasket, elbow gasket, plugs, etc. It will be the same as what is pictured in 18-1951-1 on our site. http://www.iboats.com/Exhaust-Manifold-With-Mounting-Package-18-1951-1-Sierra/dm/view_id.221752


Q:
Does Sierra 18-1954-1 manifold carburetor mounting have a 2inch x 3ans 11/16 th 4 hole pattern And not a five like in your description.?
A:
No Sierra lists this as a 5 hole pattern.


Q:
I'm looking for exhaust manifold gasket (main one) for a Gm 4 cyl 2.5L 153CID. Model is mercury MCM 120 i think its a 1978. s/n on engine 5036588?
A:
Based on your engine info there are only gasket end caps, choke over cover gasket, and exhaust elbow gasket. 18-1210-9 is the end cap gasket. 39947 is the choke cover gasket and 39915 or 18-2819 is the elbow gasket.


Q:
What is the difference between the 2 manifold kits that have the same part number. 18-1953-2?
A:
Just backup warehouse. Same exact kits.


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