Mercruiser Exhaust Manifold Elbows

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Model :
Serial Number :

Model

Serial Number

Exhaust Manifold Elbow

Exhaust Manifold Elbow

Elbow Gasket

120 1666601 - 2046624 ---
120 2046625 - 2324346 18-1973 -18-2819
120 2324347 - 3377340 18-1973 -18-2819
120 3377341 - 5192408 18-1973 -18-2819
120 5192049 - 6229717 18-1973 -18-2819
120/2.5L 6229718 & up 18-1972 -18-2833
140(4Cyl) 2508261 - 3332137 18-1971 T-20971 18-2833
140(4Cyl) 3332138 - 5157668 18-1971 T-20971 18-2833
140(4Cyl) 5157669 - 6229717 18-1971 T-20971 18-2833
140/3.0L 6229718 & up 18-1972 -18-2833
3.0L/3.0LX C856559 - F603999 18-1975 -18-2833
140(6Cyl) 1538930 - 1725960 ---
150 1666495 - 2048046 ---
160 2048022 - 2770031 18-1973 --
165 2770032 & up 18-1971 T-20971 18-2833
165/170/[3.7]L 6916779 & up ---
180/190/[3.7]LX 6916779 & up ---
175/4.3L (262 CID) B527955 & up --18-0897
175/4.3L (262 CID) B527955 & up --18-0897
4.3L (GEN II) D714107 & up --18-0897
4.3L (GEN II) D714107 & up --18-0897
4.3L (GEN II) F000878 & up --18-0897
4.3L (GEN II) F000878 & up --18-0897
185 (229 CID) 6330183 & up --18-0897
185 (229 CID) 6330183 & up --18-0897
185 (262 CID) A331455 & up --18-0897
185 (262 CID) A331455 & up --18-0897
200 2453769 - 2712072 18-1971 T-20971 18-2833
200-GM 6218462 & up --18-0897
200-GM 6218462 & up --18-0897
200/5.0L(GM) B525982 & up --18-0897
200/5.0L(GM) B525982 & up --18-0897
205 (262 CID) A331455 & up --18-0897
205 (262 CID) A331455 & up --18-0897
205/4.3L-LX B527955 & up --18-0897
205/4.3L-LX B527955 & up --18-0897
4.3LX(GEN II) D714370 & up --18-0897
4.3LX(GEN II) D714370 & up --18-0897
4.3LX(GEN II) F001220 & up --18-0897
4.3LX(GEN II) F001220 & up --18-0897
215-FORD 2781153 & up 18-1971 T-20971 18-2833
215-FORD 2781153 & up 18-1971 T-20971 18-2833
225-FORD 3385721 & up N/A -18-2833
225-FORD 3385721 & up 18-1971 T-20971 18-2833
225-S (FORD) 3385721 & up 18-1971 T-20971 18-2833
225-S (FORD) 3385721 & up 18-1971 T-20971 18-2833
225-GM 1539620 - 2278646 ---
225-GM 1539620 - 2278646 ---
225-GM 2278647 - 2694014 ---
228-GM 4765100 - 4888929 --18-0885
228-GM 4888930 - 5170008 18-1971 T-20971 18-2833
228-GM 4888930 - 5170008 18-1971 T-20971 18-2833
228-GM 5170009 - 6218461 --18-2833
228-GM 5170009 - 6218461 --18-2833
228-GM 6218462 & up --18-0897
228-GM 6218462 & up --18-0897
230-GM (IMBRD) 5907058 & up --18-0897
230-GM (IMBRD) 5907058 & up --18-0897
230/5.0 GM (IB) B522506 & up --18-0897
230/5.0 GM (IB) B522506 & up --18-0897
230-GM 6218462 & up --18-0897
230-GM 6218462 & up --18-0897
230/5.0L-LX (GM) B525982 & up --18-0897
230/5.0L-LX (GM) B525982 & up --18-0897
233-FORD 4173000 & up --18-2833
233-FORD 4173000 & up 18-1971 T-20971 18-2833
250-GM 2314301 - 2639854 --18-0885
250-GM 4768860 - 4908849 18-1971 T-20971 18-2833
250-GM 4768860 - 4908849 18-1971 T-20971 18-2833
255-FORD 3258728 & up 18-1971 T-20971 18-2833
255-FORD 3258728 & up 18-1971 T-20971 18-2833
255-GM 4175500 - 4499060 --18-0885
255-GM 4499061 - 5195908 18-1971 T-20971 18-2833
255-GM 4499061 - 5195908 18-1971 T-20971 18-2833
255-GM 5195909 & up --18-0885
255-GM 5195909 & up --18-0885
260-GM 4908850 - 6218461 18-1971 T-20971 18-2833
260-GM 4908850 - 6218461 18-1971 T-20971 18-2833
260-GM 6218462 & up --18-0897
260-GM 6218462 & up --18-0897
260/5.7L (GM) B525982 & up --18-0897
260/5.7L (GM) B525982 & up --18-0897
260-GM (INBRD) 5907058 & up --18-0897
260-GM (INBRD) 5907058 & up --18-0897
260/5.7 GM (IB) B588506 & up --18-0897
260/5.7 GM (IB) B588506 & up --18-0897
270-GM 2851074 - 3077735 --18-0885
280-GM 4176250 & up --18-0885
300MR/TRS (GM) 6668677 & up --18-2849
300MR/TRS (GM) 6668677 & up --18-2849
320-GM (EFI) A543604 & up --18-2849
320-GM (EFI) A543604 & up --18-2849
320-GM (EFI) B157603 & up --18-2849
320-GM (EFI) B157603 & up --18-2849
325-GM 2313965 - 3042730 --18-0885
325-GM 3042731 & up --18-0885
330-GM 4623115 & up --18-0885
330-GM/ 6083145 & up --18-0897
340/7.4L-GM 5889914 & up --18-0897
340/7.4L-GM 5889914 & up --18-0897
350-GM 3780450 & up --18-0885
350-GM (Mag) A635178 & up --18-0897
350-GM (Mag) A635178 & up --18-0897
350-GM (Mag) B525982 & up --18-0897
350-GM (Mag) B525982 & up --18-0897
350 (Mag-Trn.Ski) D505450 & up --18-0897
350 (Mag-Trn.Ski) D505450 & up --18-0897
370 TRS-GM 4179554 & up --18-0885
370 TRS-GM 6721528 & up --18-2849
370 TRS-GM 6721528 & up --18-2849
390-GM 2781129 - 2825059 --18-0885
400 TRS-GM 4179554 & up --18-0885
420-GM A398941 & up ---
425-GM A398941 & up ---
440 TRS-GM 4179554 & up --18-0885
454-GM (Mag) A631894 & up --18-0897
454-GM (Mag) A631894 & up --18-0897
454 Mag Bravo (GM) B721206 & up --18-0897
454 Mag Bravo (GM) B721206 & up --18-0897
454 Mag Bravo (Gen V) D805069 & up --18-0897
454 Mag Bravo (Gen V) D805069 & up --18-0897
460 TRS-GM 4179554 & up --18-0885
465 C849992 & up ---
470 4208730 - 5520114 18-1971 T-20971 18-2833
470 4208730 - 5520114 18-1971 T-20971 18-2833
470 5520115 - 6218036 18-1972 -18-2833
500 C577254 & up ---
502 Mag Bravo (GM) C878221 & up --18-0897
502 Mag Bravo (GM) C878221 & up --18-0897
502 Mag Bravo (Gen V) D824589 & up --18-0897
502 Mag Bravo (Gen V) D824589 & up --18-0897
502 EFI D840650 & up --18-0897
502 EFI D840650 & up --18-0897
525 D456000 & up ---
888-FORD 3108723 & up 18-1971 T-20971 18-2833
888-FORD 3108723 & up 18-1971 T-20971 18-2833
898/198-GM 4762210 - 6218461 18-1971 T-20971 18-2833
898/198-GM 4762210 - 6218461 18-1971 T-20971 18-2833
898-GM 6218462 & up --18-0897
898-GM 6218462 & up --18-0897
5.7-GM (Ski) A338553 & up --18-0897
5.7-GM (Ski) A338553 & up --18-0897
5.7-GM (Ski) B514627 & up --18-0897
5.7-GM (Ski) B514627 & up --18-0897
5.7-GM (Ski) B525982 & up --18-0897
5.7-GM (Ski) B525982 & up --18-0897
7.4L Bravo (GM) B771113 & up --18-0897
7.4L Bravo (GM) B771113 & up --18-0897
7.4L Mag Bravo (Gen V) D603118 & up --18-0897
7.4L Mag Bravo (Gen V) D603118 & up --18-0897
7.4L w/Hurth (IB) ALL --18-0897
7.4L w/Hurth (IB) ALL --18-0897
7.4L (IB/LHR/Gen V) D715494 & up --18-0897
7.4L (IB/LHR/Gen V) D715494 & up --18-0897
8.2L w/Hurth (IB) C878221 & up --18-0897
8.2L w/Hurth (IB) C878221 & up --18-0897
8.2L (IB) (Gen V)* D857200 & up --18-0897
8.2L (IB) (Gen V)* D857200 & up --18-0897

Model

Serial Number

Exhaust Manifold Elbow

Exhaust Manifold Elbow

Elbow Gasket

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Serial Number :
Your Price: $269.25
Save: $100.85
(27% Off $370.10)
Part # 18-1905
Hurry! Only 1 left in stock
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Replaces OEM part #
  • MERCURY MARINE 90880
For: Mercruiser 4 Cylinder 224cu. in. 3.7L (Models: 165, 170,180, 190)
Use with:
    Manifold: Mercruiser 99908
    Exhaust Elbow Mounting Gasket: 18-0113
    Mounting Kit: 18-8500
Your Price: $262.85
Save: $105.56
(28% Off $368.41)
Part # 18-1937
Replaces OEM part #
  • MERCURY MARINE 98562A6
For: Mercruiser 4 Cylinder 224cu. in. 3.7L (Models: 165, 170,180, 190)
Use with:
    Exhaust Elbow Mounting Gasket: 18-0881
    Mounting Kit: 18-8530
Your Price: $117.05
Save: $53.48
(31% Off $170.53)
Part # 18-1970-1 ValueShip™ Eligible
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Replaces OEM part #
  • MERCURY MARINE 98504A3
For: V-6 & V-8 applications 15° (3" O.D. Riser) Comes with 18-0897 & brass plugs
Use with:
    Manifold: 18-1952-1, 18-1953-1, 18-1957-1
    Elbow Gasket: 18-0897 restrictor, 18-2849 open, 18-0672 blocked
    Mounting Kit: 18-8529 or if spacer is included use 18-8554
Your Price: $128.00
Save: $46.62
(26% Off $174.62)
Part # 18-1971 ValueShip™ Eligible
Replaces OEM part #
  • MERCURY MARINE 76351A2
  • MERCURY MARINE 76351A04
  • MERCURY MARINE 76351A1
  • MERCURY MARINE 60426A1
  • MERCURY MARINE 49964A2
  • MERCURY MARINE 49964A1
  • BARR MC20-60426P
For: most early model Mercruiser 140 HP (4 cyl) applications

Use with:
  • Manifold: 18-1960-1, 18-1958, 18-1950-1, 18-1951-1, 18-1962, 18-1954-1, 18-1955-1, 18-1956-1
  • Elbow Gasket: 18-2833
  • Mounting Kit: 18-4362
Your Price: $158.65
Save: $79.28
(33% Off $237.93)
Part # 18-1972 ValueShip™ Eligible
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Replaces OEM part #
  • MERCURY MARINE 76325A2
For: most late Model 120,140 HP Mercruiser applications
Use with:
    Manifold: 18-1955-1, 18-1954-1, 18-1956-1, 18-1901
    Elbow Gasket: 18-2833
    Mounting Kit: 18-8552
Your Price: $148.41
Save: $64.24
(30% Off $212.65)
Part # 18-1973 ValueShip™ Eligible
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Replaces OEM part #
  • MERCURY MARINE 55538A2
For: most early Model 120 HP Mercruiser applications
Use with Manifolds: 18-1954-1, 18-1955-1, 18-1956-1
Elbow Gasket 18-2833
Mounting Kit: 18-8508
Your Price: $154.98
Save: $67.90
(30% Off $222.88)
Part # 18-1975-1 ValueShip™ Eligible
Replaces OEM part #
  • MERCURY MARINE 12076A2
For: late Model Mercruiser 4 cyl. Engines
Use with:
    Manifold: 18-1955-1, 18-1954-1, 18-1956-1, 18-1901
    Riser Gasket: 18-2833
    Mounting Kit: 18-8551
    Bellow: 18-2748
Your Price: $215.04
Save: $103.52
(32% Off $318.56)
Part # 18-1974-1 ValueShip™ Eligible
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Replaces OEM part #
  • MERCURY MARINE 98502A2
For: Mercruiser V-6 & V-8 applications 0° (3" O.D. Riser)
Comes with 18-0897 gasket & brass plugs

Fits Manifold: 18-1957-1
Use Elbow Gaskets: 18-2849, 18-0897, or 18-0672
Use Mounting Kit: 18-8529 (Do not use with spacer)
Your Price: $116.48
Save: $52.27
(30% Off $168.75)
Part # 18-1976-1 ValueShip™ Eligible
Replaces OEM part #
  • MERCURY MARINE 44354A3
  • MERCURY MARINE 807988A2
For: most Mercruiser V-6 & V-8 applications 7° (4" O.D. Riser)
Comes with 18-0897,18-4263 & 18-4258
Use with:
    Manifold: 18-1952-1, 18-1953-1, 18-1957-1
    Riser Gasket: 18-0897 restrictor, 18-2849 open, 18-0672 blocked
    Mounting Kit: 18-8505, or if spacer is included use 18-8555
Your Price: $242.97
Save: $91.05
(27% Off $334.02)
Part # 18-1978 ValueShip™ Eligible
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Replaces OEM part #
  • MERCURY MARINE 76771A2
  • MERCURY MARINE 76771A3
For: V-8 Inboard Applications Only
Use with:
    Manifold: 18-1950-1, 18-1951-1, 18-1958, 18-1962, 18-1954-1, 18-1955-1, 18-1956-1
    Elbow Gasket: 18-2833
    Mounting Kit: 18-4362
Your Price: $60.80
Save: $7.61
(11% Off $68.41)
Part # 18-1991 ValueShip™ Eligible
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For use with 3" I.D. Exhaust Hose
Use with: Manifold Riser 18-1999
Your Price: $56.85
Save: $22.33
(28% Off $79.18)
Part # 18-1992-1 ValueShip™ Eligible
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For 3" I.D. Exhaust Hose
( As used in 18-1987 Exhaust Manifold Coversion Kit )
Your Price: $638.26 (Out of stock)
Save: $72.05
(10% Off $710.31)
Part # 18-4007
Replaces OEM part #
  • MERCURY MARINE 98502A2
For: Volvo D30, D40, AD30A, AQAD30, TAMD30A, TMD30A, AD40B, AQAD40A, AQAD40B, AQD40A, TAMD40A, TAMD40B, TMD40A, TMD40B, TMD40C
(Out Of Stock)
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Your Price: $73.99 (Out of stock)
Save: $46.24
(38% Off $120.23)
Part # T-20906 ValueShip™ Eligible
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Mercruiser Spacer, 3" rear riser.


Replaces:

  • Mercruiser # 61851

Fits T-20950 and T-20951 manifolds with T-20971 or T-20978 risers.


Engine Type:
GM Small Block V8 305-350 cu.in.


Engine Model:
198, 228 and 898

(Out Of Stock)
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Your Price: $180.30
Save: $123.70
(40% Off $304.00)
Part # T-20938
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Riser, 4" exhaust outlet, 10° down angle.


Replaces OEM #:

  • Crusader RO29015
  • Crusader 98126

Engine Type:

GM Small Block V8 305-350 cu.in.


Engine Model:
220 and 270

Your Price: $107.19
Save: $61.63
(36% Off $168.82)
Part # T-20970 ValueShip™ Eligible
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Riser, 3" exhaust outlet, 15° down angle.


Replaces OEM #:

  • Mercruiser 98503
  • Mercruiser 98504

For early model inboard/outboards.


Engine Type:
GM V6 229 and 262 cu.in.GM Small Block V8 305-350 cu.in.GM Big Block V8 454 cu.in.


Engine Model:
185 and 205200, 228, 230, 260 and 898330, 340 and 7.4L

Your Price: $101.38
Save: $66.31
(39% Off $167.69)
Part # T-20971 ValueShip™ Eligible
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Mercruiser Riser, 3" exhaust outlet, 90° down angel.


Replaces OEM #:

  • Mercruiser 76351
  • Mercruiser 60426
  • Mercruiser 49964

For use in most inboard/outboard applications.


Engine Type:
GM In-Line Six Cylinder 250 and 292 cu.in.GM Small Block V8 305-350 cu.in.


Engine Model:
165 and 200198, 228 and 898

Your Price: $158.93
Save: $150.07
(48% Off $309.00)
Part # T-20974 ValueShip™ Eligible
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Mercury Riser, 3" 0° (3" O.D. Riser)


Replaces OEM #:

  • Mercury Marine 98502A2

Engine Type:

GM V6 229 and 262 cu.in.GM Small Block V8 305-350 cu.in.GM Big Block V8 454 cu.in.


Engine Model:
185 and 205200, 228, 230, 260 and 898330, 340 and 7.4L

Your Price: $132.58
Save: $90.30
(40% Off $222.88)
Part # T-20975 ValueShip™ Eligible
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Mercruiser Riser, 4" exhaust outlet, 90° down angle.


Replaces OEM #:

  • Mercruiser 12076 and 2-piece offset adapter and riser #s' 95863 and 76325

Engine Type:
GM Four Cylinder 181 cu.in.


Engine Model:
Models 120/140/2.5L/3.0L

Your Price: $93.37
Save: $65.39
(41% Off $158.76)
Part # T-20976 ValueShip™ Eligible
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Riser, 4" exhaust outlet, 7° down angle. For late model inboard/outboard and inboards.

Replaces OEM #:

  • Mercruiser 44354
  • Mercruiser 807914
  • Mercruiser 807988

Fits Engine Type:

GM V6 229 and 262 cu.in.GM Small Bolck V8 305-350 cu.in.GM Big Block V8 454 cu.in.

Engine Model

185 and 205200, 228, 230, 260 and 898330, 340 and 7.4L

Your Price: $175.18
Save: $148.82
(45% Off $324.00)
Part # T-20978 ValueShip™ Eligible
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Mercruiser Riser, 3" exhaust outlet, 0° down angle


Replaces OEM #:

  • Mercruiser 76771
  • Mercruiser 60427

For use in most inboard applications.


Engine Type:
GM In-Line Six Cylinder 250 cu.in.GM In-Line Six Cylinder 250 and 292 cu.in.GM Small Block V8 305-350 cu.in.


Engine Model:
165 Equipped with Mercruiser riser #'s 76351, 76325, 60426, 49964, 76771 or 60427165 and 200198, 228 and 898

Sierra
Average Customer Review for Exhaust Manifold Elbow - 18-1937 - Sierra
Full StarFull StarFull StarFull StarEmpty Star Based On 1 Review | Write Review
Full StarFull StarFull StarFull StarEmpty StarNice product
by Chris from Ramona, California on August 27, 2011
I give the product itself 5 stars BUT This is actually an osco manifold with sierra sticker on the box. Nice USA made product but sierra charges more then osco direct retail price.
(2 of 2 people found this review helpful)
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Average Customer Review for Sierra 18-1971 Exhaust Manifold Elbow
Full StarFull StarFull StarFull StarFull Star Based On 2 Reviews | Write Review
Full StarFull StarFull StarFull StarFull StarGood part
by Glen from Shaunavon, Saskatchewan on February 01, 2015
Elbow fit well, and looks well built.
Was this review helpful?
Full StarFull StarFull StarFull StarFull StarEXCELLENT AFTERMARKET PART
by James from Hamptonville, North Carolina on September 27, 2011
This elbow is far superior to the "stock" units that are no longer available. It is solid cast for as twin-wall and the bolt mating end is stainless steel!
(2 of 2 people found this review helpful)
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Full StarFull StarFull StarFull StarFull Star Based On 1 Review | Write Review
Full StarFull StarFull StarFull StarFull StarExhaust Manifold Elbow Riser - Sierra
by William from Poquoson, Virginia on May 11, 2012
Perfect fit and with everything I needed included, it installed in minutes.
(1 of 1 people found this review helpful)
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Full StarFull StarFull StarFull StarFull Star Based On 1 Review | Write Review
Full StarFull StarFull StarFull StarFull Starriser
by Eric from Pointe Claire, Quebec on July 09, 2014
perfect
(1 of 1 people found this review helpful)
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Q:
What size exhaust hose will this accept?
A:
Sierra does not have that info at this time unfortunately. We can only match it up by application: Volvo D30, D40, AD30A, AQAD30, TAMD30A, TMD30A, AD40B, AQAD40A, AQAD40B, AQD40A, TAMD40A, TAMD40B, TMD40A, TMD40B, TMD40C.
Q:
Does this come with the gaskets?
A:
No that gasket is sold separately.
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