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Sierra

mercruiser gm big block v8 (330, 340, 7.4l) sterndrive exhaust manifold exploded view
Mercruiser Sterndrive Exhaust Manifold Exploded View Diagram and Parts
Fits GM Big Block V8 454 cu. in.
Models 330, &7.4L
Figure #DescriptionO.E.M. #Sierra #Application
1MANIFOLD807078A6 18-1957-1GM Big Block (V8) 454 cu.in. Models 330, 340 & 7.4L. Use with 18-0418 manifold gasket; Mounting Kit: 18-8532
2ELBOW GASKET (BLOCKED)27-860231 18-0672Fits Manifold: 18-1957-1; Elbows: 18-1970-1, & 18-1976-1, 18-1974: Spacer 18-1908.
3ELBOW GASKET (OPEN)27-818832 18-2849Fits Manifold: 18-1957-1; Elbows: 18-1970-1, & 18-1976-1, 18-1974: Spacer 18-1908.
4MOUNTING STUDN/ANSSIncluded in 18-8554 mounting kit.
5MOUNTING STUDN/ANSSIncluded in 18-8529 mounting kit.
6MOUNTING BOLTN/ANSSIncluded in 18-8505 mounting kit.
7MOUNTING BOLTN/ANSSIncluded in 18-8532 mounting kit.
8MANIFOLD ELBOW98502A2 18-1974-1Fits Manifold: 18-1957-1. Use Elbow gaskets: 18-2849, 18-0897, or 18-0672; Use mounting kit: 18-8529 (Do not use with spacer)
9MANIFOLD ELBOW44354A3 18-1976-1Fits Manifold: 18-1957-1. Use Elbow gaskets: 18-2849, 18-0897, or 18-0672; Use mounting kit: 18-8505, or if spacer is included use 18-8555
10MANIFOLD ELBOW98504A3 18-1970-1Fits Manifold: 18-1957-1. Use Elbow gaskets: 18-2849, 18-0897, or 18-0672; Use mounting kit: 18-8529, or if spacer is included use 18-8554.
11HOSE FITTINGN/A18-82163/4" - 14NPT X 1" Hose (Corrosion Resistant Brass Fitting)
12HOSE FITTINGN/A 18-44613/4" - 14NPT X 1" Hose (Corrosion Resistant Brass Fitting)
13HOSE FITTINGN/A18-82153/4" - 14NPT X 3/4" Hose (Corrosion Resistant Brass Fitting)
14MANIFOLD SPACER KIT807476A6, 93320A5 18-1908K3" Riser Kit for Manifold: 18-1957-1. Includes (2) spacers, restrictor, open, & blocked gasket. All necessary mounting hardware is also included.
15MOUNTING KITN/A 18-8554Use 18-8554 Mounting Kit when 18-1908 Spacer, 18-1970-1 Elbow and 18-1974 Elbow are used together. Included in 18-1908K. Includes (1) 18-2849 & 18-0897 elbow gaskets.
16MOUNTING KITN/A 18-8555Use with Manifold Spacer: 18-1908 with Riser 18-1976-1. Included in 18-1908K. Includes (1) 18-2849 & 18-0897 elbow gaskets.
17MOUNTING KITN/A 18-8556Use with Manifold Spacer: 18-1985. Includes (1) 18-2849 & 18-0897 elbow gaskets
18MOUNTING KITN/A 18-8505Use with Riser: 18-1976-1. Includes 18-0897 elbow gasket.
19MOUNTING KITN/A 18-8529Use with Risers: 18-1970-1 & 18-1974-1. Includes 18-0897 elbow gasket.
20MOUNTING KITN/A 18-8532Use with Manifold: 18-1957-1. Includes 18-0418 manifold gasket.
21MANIFOLD GASKET96653 / 27-46820 18-0418Use with Manifold: 18-1957-1. Included in 18-8532 mounting kit.
22ELBOW GASKET (RESTRICTOR)27-41813 18-0897Fits Manifold: 18-1957-1; Manifold Spacers: 18-1985, & 18-1908; Elbows: 18-1970-1, & 18-1976-1, 18-1974
23MANIFOLD SPACER93322A12 18-19083" Spacer for Manifold: 18-1952-1. Use with mounting kit 18-8556. (Note: To mount elbows to spacer a separate mounting kit is needed)
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Based On 1 Review
Review for Sierra 18-8554 Exhaust Elbow Mounting Kit by a CustomerMay 28, 2009

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mercury marine 27-863724 replacement parts

Our Price: $4.99 Exhaust Elbow to Manifold Gasket - Sierra
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Part # 18-0897
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Part # 18-0897
Replaces OEM part #

  • MERCURY MARINE 27-41813
Used with:
    Fits Manifold: 18-1957-1, 18-1952-1, 18-1958, 18-1962
    Manifold Spacers: 18-1985, & 18-1908
    Riser: 18-1976-1, 18-1970-1, 18-1974
Included in 18-8554 mounting kit

barr mc-20-44354 replacement parts

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Part # 18-1976-1
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Part # 18-1976-1
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

sierra 18-8505 exhaust elbow mounting kit

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Part # 18-8505
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Part # 18-8505
For: Mercruiser GM V6 229 and 262cu.in. (Models 185 and 205), GM Small Block V8 305-350cu.in. (Models: 200, 228, 230, 260, 898), GM Big Block V8 454cu.in. (Models: 330, 340 and 7.4L)

Used with:

    Riser: 18-1976-1
Includes 18-0897 elbow gasket

mercury marine 27-860231 replacement parts

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Part # 18-0672
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Part # 18-0672
Replaces OEM part #

  • MERCURY MARINE 27-8637251
  • MERCURY MARINE 27-860231
Package of 2
Used with:
    Riser: 18-1970-1, 18-1976-1, 18-1974
    Fits Manifold: 18-1957-1
    Spacer: 18-1908

mercury marine 93322 replacement parts

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Part # 18-1908
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Part # 18-1908
Replaces OEM part #

  • MERCURY MARINE 93320
For: Mercruiser GM V6 229 and 262cu.in. (Models: 185 and 205),GM Small Block V8 305-350cu.in. (Models: 200, 228, 230, 260 and 898), GM Big Block V8 454cu.in. (Models: 330, 340 and 7.4L)
Used with:
    Manifolds: 18-1952-1, 18-1953-1, 18-1957-1
Use with mounting kit 18-8556. To mount elbows to spacer a separate mounting kit is needed

mercury marine 98502a2 replacement parts

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Part # 18-1974-1
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Part # 18-1974-1
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)

sierra 18-8529 exhaust elbow mounting kit

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Part # 18-8529
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Part # 18-8529
For: Mercruiser GM V6 229 and 262cu.in. (Models 185 and 205), GM Small Block V8 305-350cu.in. (Models: 200, 228, 230, 260, 898), GM Big Block V8 454cu.in. (Models: 330, 340 and 7.4L)

Used with:

    Riser: 18-1970-1 and 18-1974-1
Includes 18-0897 elbow gasket

glm 33765 replacement parts

Our Price: $16.99 Exhaust Manifold Mounting Kit - Sierra
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Part # 18-8532
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Part # 18-8532
For: Mercruiser GM Big Block V8 454cu.in. (Models: 330, 340 and 7.4L)

Used with:

    Manifold: 18-1957-1
Includes 18-0418 manifold gasket

mercury marine 22-807155 replacement parts

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Part # 18-4461
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Part # 18-4461
Replaces OEM part #

  • MERCURY MARINE 22-807155
3/4" - 14 NPT X 1" Hose
Corrosion Resistant Brass Fitting

sierra 18-8555 exhaust manifold mounting kit

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Part # 18-8555
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Part # 18-8555
For: Mercruiser 229 and 262 ci V6, 305 and 350 SB V8, 454 Big Block V8.

Used with:

    Riser Kit: 18-1908K and 18-1908 Spacer
    Riser: 18-1970-1
    Manifolds: 18-1952-1
Includes (1) 18-2849 & 18-0897 elbow gaskets

barr mc2098504p replacement parts

Our Price: $12.99 Exhaust Manifold Elbow Gasket, Open - Sierra
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Part # 18-2849
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Part # 18-2849
Replaces OEM part #

  • MERCURY MARINE 27-818832
  • MERCURY MARINE 27-863726
  • MERCURY MARINE 27-87105-1
Package of 2
Use With:
    Manifold: 18-1957-1, 18-1952-1, 18-1958, 18-1962
    Elbow: 18-1976-1, 18-1970-1, 18-1974
    Spacer: 18-1908, 18-1985
Included in 18-8554 mounting kit

sierra 18-8554 exhaust elbow mounting kit

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Part # 18-8554


Part # 18-8554
For: Mercruiser 229 and 262 ci V6, 305 and 350 SB V8, 454 Big Block V8.

Used with:

    Riser Kit: 18-1908K and 18-1908 Spacer
    Riser: 18-1970-1, 18-1971, 18-1978
    Manifold: 18-1952-1
    Manifold Spacer: 18-1906
Use 18-8554 Mounting Kit when 18-1908 Spacer, 18-1970-1 Elbow and 18-1974 Elbow are used together
Included in 18-1908K
Includes (1) 18-2849 & 18-0897 elbow gaskets

sierra manifold, w/ mounting pkg

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Part # 18-1957-1
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Part # 18-1957-1
Replaces OEM part #

  • MERCURY MARINE 807078A 6
  • MERCURY MARINE 89011A8
Fits most Mercruiser (GM) V-8 big blocks with center riser, 454 cu.in. Models 330, 340 & 7.4L, Port & Starboard
WILL FIT EITHER SIDE
Use with:
    Exhaust Manifold Gasket: 18-0418
    Mounting Kit: 18-8532

glm 51110 replacement parts

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Part # 18-1970-1
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Part # 18-1970-1
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

volvo 3852472 replacement parts

Our Price: $10.99 Exhaust Manifold Gasket - Sierra
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Part # 18-0418
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Part # 18-0418
Replaces OEM part #

  • CRUSADER 96653
  • BARR CHVA-47-0000
  • GM 3852472
  • MERCURY MARINE 27-46820
  • OMC 909613
  • VOLVO 3852472
Used with:
    Manifolds: 18-1957-1, 18-1982, 18-1929, 18-1933, 18-1898
Included in 18-8532 mounting kit

sierra 18-8556 exhaust elbow mounting kit

Our Price: $12.99 Exhaust Manifold Elbow Mounting Kit - Sierra
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Part # 18-8556
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Part # 18-8556
For: 229 and 262 ci V6, 305 and 350 SB V8, 454 Big Block V8.

Used to mount:

    Spacer 18-1985 to Manifolds 18-1953-2, 18-1957-1 and 18-1952-1
Includes (1) 18-2849 & 18-0897 elbow gaskets

mallory gasket, exhaust elbow 9-61414

Our Price: $5.99 Mallory Gasket, Exhaust Elbow 9-61414
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Part # 9-61414
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Replaces GLM #:32080
Replaces Original Equipment Manufacturer(OEM):Mercruiser
Replaces Original Equipment Manufacturer # (OEM #):27-863726
Fits Application:GM V-6 & V-8 w/center rise manifold

mallory gasket, exhaust elbow 9-61413

Our Price: $4.99 Mallory Gasket, Exhaust Elbow 9-61413
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Part # 9-61413
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Replaces GLM #:30240
Replaces Original Equipment Manufacturer(OEM):Mercruiser
Replaces Original Equipment Manufacturer # (OEM #):27-863724 / 27-41813
Fits Application:V-6 & V-8 engines w/center riser manifolds

mallory gasket, exhaust 9-61400

Our Price: $9.99 Mallory Gasket, Exhaust 9-61400
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Part # 9-61400
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Replaces Original Equipment Manufacturer(OEM):Merc, OMC, Crusader, Barr
Replaces Original Equipment Manufacturer # (OEM #):27-46820

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