Sierra
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Part # 18-0465
2nd Day Air for $2 More Eligible
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Part # 18-4365
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Part # 18-4392
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Part # 18-4388
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Part # 18-4389
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Part # 18-4503
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Part # 18-4508
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Intake and Exhaust Manifold Gasket Sets for Mercruiser
Gasket Set-Intake Manifold Gm7.4L - 18-0465 - Sierra
Replaces OEM part #
  • CRUSADER 31134
  • GM 14024393
  • MERCURY MARINE 27-65184
  • OMC 352670
For: GM 454 CID Engines, 325, 330, 340, 350 HP and 454 Magnums, 7.4L
Exhaust Manifold Gasket Set - 18-4365 - Sierra
Replaces OEM part #
  • MERCURY MARINE 27-801855
For: GM 454 (7.4L) CID Eng; Production Models Rectangular Port
Includes 18-3877 Head Gasket
Intake Manifold Gasket Set - 18-4392 - Sierra
Replaces OEM part #
  • MERCURY MARINE 27-75611A2
For: GM 305 & 350 CID Eng. 898 (198 HP) 200, 228, 230/260 (Inboard) 230, 250, 255, 260, 280 & 5.7L Ski
Kit Contains:
    (1) 18-0868 Intake Manifold Gasket - replaces O.E. # 27-17145
    (2) 18-0872 Exhaust Manifold Gasket - replaces O.E. # 27-33395
    (2) 18-2848 Quadrajet Base - replaces O.E. # 27-52457-2
    (2) 18-3876 Head Gasket - replaces O.E. # 27-75611
    (1) 18-2553 Thermostat Gasket - replaces O.E. # 27-47510
    (1) 18-2844 Thermostat Cover Gasket - replaces O.E. # 27-48818-1
    (2) 18-2554 Thermostat Gasket - replaces O.E. # 27-41812
    (1) 18-2917 Lower Thermostat Housing Gasket - replaces O.E. # 27-53045-1
    (2) 18-2845 Valve Cover Gasket - replaces O.E. # 27-11999
    (16) 18-0518 Seal - replaces O.E. # 26-34217
Intake Manifold Gasket Set - 18-4389 - Sierra
Replaces OEM part #
  • MERCURY MARINE 27-47453A1
For: For: All GM 165 HP (S/N 270032 & UP) & Inline 6 cyl. 250 CID
Cylinder Head - 18-4503 - Sierra
  • Cast Iron cylinder heads sold in pairs only
  • OE look
  • Corrosion resistance heavy-duty cast iron castings suitable for saltwater usage
Head Bolt Kit - 18-4508 - Sierra
High performance head bolt kit-small block GM
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perfect fit
by Joshua from Grovertown, Indiana on June 12, 2015
exactly what I needed for my '78 Viking deck boat's chevy 250 L6
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