OMC Sterndrive/Cobra Head Gaskets

Your Price: $16.62
Save: $7.51
(31% Off $24.13)
Part # 18-2946 ValueShip™ Eligible
SHIPS TOMORROW!* if ordered in 23 hrs 52 mins.
Replaces OEM part #
  • CHRIS-CRAFT 16.50-00204
  • MERCURY MARINE 27-52364
  • OMC 3853336
  • OMC 908611
  • OMC 913274
  • OMC 914812
  • VOLVO 3853336
  • VOLVO 908611
  • VOLVO 3853336
For: GM 181 ( 3.0L ) CID Engine
Your Price: $34.26
Save: $20.16
(37% Off $54.42)
Part # 18-3873 ValueShip™ Eligible
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Replaces OEM part #
  • CRUSADER 31004
  • MERCURY MARINE 27-811207
  • OMC 915927
  • PCM RM0226
  • VOLVO 3853587
For: GM 502 CID
Fits: 7.4L GL, GI, GSI, 8.2L GL
Your Price: $78.45
Save: $42.22
(34% Off $120.67)
Part # 18-3874 ValueShip™ Eligible
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Replaces OEM part #
  • CRUSADER 31137
  • MERCURY MARINE 27-811546
  • OMC 3853511
For: GM ( 8.2L ) 502 CID / 7.4L
For: Mercruiser ( 8.2L ) 502 CID / 7.4L
For: Volvo 5.0L, FL, FI: 5.8L, FL, FI, F, SI
For: OMC 7.4L, 8.2L
Your Price: $25.26
Save: $13.83
(35% Off $39.09)
Part # 18-3876 ValueShip™ Eligible
SHIPS TOMORROW!* if ordered in 23 hrs 52 mins.
Replaces OEM part #
  • GM 6269577
  • CHRIS-CRAFT 16.50-00250
  • CRUSADER 7057500
  • MERCURY MARINE 27-75611
  • OMC 313201
  • OMC 3853380
  • OMC 910089
  • OMC 914971
  • VOLVO 3853380
  • VOLVO 841207-4
  • VOLVO 856474-2
  • VOLVO 914971
For: GM 305 ( 5.0L ) 350 ( 5.7 ) CID Engine
For: OMC 5.0L, 5.7L
Your Price: $40.99
Save: $11.02
(21% Off $52.01)
Part # 18-3877 ValueShip™ Eligible
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Replaces OEM part #
  • CHRIS-CRAFT 16.50-00259
  • CRUSADER 30266
  • GM 6258714
  • MERCURY MARINE 27-13687
  • OMC 914849
For: GM 454 ( 7.4L ) CID Engine
For: OMC 7.4L
Your Price: $24.88
Save: $12.38
(33% Off $37.26)
Part # 18-3878 ValueShip™ Eligible
SHIPS TOMORROW!* if ordered in 23 hrs 52 mins.
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Replaces OEM part #
  • CHRYSLER INBOARD 4417375
  • MERCURY MARINE 27-13709
  • MERCURY MARINE 27-92166
  • MERCURY MARINE 27-79986
  • MERCURY MARINE 27-74264
  • MERCURY MARINE 27-921661
  • MERCURY MARINE 27-13709T
  • OMC 912766
For: Mercruiser 224 ( 3.7L ) CID Engine Model 470
Your Price: $28.98
Save: $7.69
(20% Off $36.67)
Part # 18-3879 ValueShip™ Eligible
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Replaces OEM part #
  • CRUSADER 33408
  • MERCURY MARINE 27-11986
  • MERCURY MARINE 27-816460
  • OMC 3854299
  • OMC 910833
  • OMC 912227
  • OMC 914930
  • VOLVO 3854299
  • VOLVO 912227
  • VOLVO 914930
For: GM 262 ( 4.3L ) CID Engine
For: OMC 4.3L
Your Price: $41.98
Save: $10.34
(19% Off $52.32)
Part # 18-3880 ValueShip™ Eligible
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Replaces OEM part #
  • MERCURY MARINE 27-810841
  • MERCURY MARINE 27-34273
  • OMC 311210
For: GM 153 ( 2.5L ), ( 3.0L) CID Engine
For: OMC 2.5L, 3.0L
Your Price: $41.51
Save: $24.42
(37% Off $65.93)
Part # 18-3881 ValueShip™ Eligible
SHIPS TOMORROW!* if ordered in 23 hrs 52 mins.
Hurry! Only 1 left in stock
Replaces OEM part #
  • MERCURY MARINE 27-72622
  • MERCURY MARINE 27-47453
  • OMC 908237
For: GM 250 ( 4.1L ) CID ( 6 cyl ) Engine

Your Price: $73.99
Save: $20.44
(21% Off $94.43)
Part # 18-3883 ValueShip™ Eligible
SHIPS TOMORROW!* if ordered in 23 hrs 52 mins.
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Replaces OEM part #
  • PLEASURECRAFT RM0032
  • MERCURY MARINE 27-75647
  • OMC 3853732, 910285, 910291, 916221
  • VOLVO 3853732, 910285, 910291, 916221
For: Ford 302 ( 5.0L ) 351 ( 5.8L ) CID Engine
For: OMC 5.0L, 5.8L
Your Price: $58.99
Save: $15.64
(20% Off $74.63)
Part # 18-3887 ValueShip™ Eligible
SHIPS TOMORROW!* if ordered in 23 hrs 52 mins.
Hurry! Only 1 left in stock
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Replaces OEM part #
  • CRUSADER 31136
  • MERCURY MARINE 27-850470
  • OMC 915325
  • VOLVO 3853511
For: GM ( 7.4L ) 454 CID Gen V
For: OMC 7.4L
Your Price: $1,041.83
Save: $1,103.07
(51% Off $2,144.90)
Part # 18-4503
SHIPS TOMORROW!* if ordered in 23 hrs 52 mins.
Hurry! Only 1 left in stock
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  • Cast Iron cylinder heads sold in pairs only
  • OE look
  • Corrosion resistance heavy-duty cast iron castings suitable for saltwater usage
 
Your Price: $1,827.49
Save: $2,024.78
(52% Off $3,852.27)
Part # 18-4504
SHIPS TOMORROW!* if ordered in 23 hrs 52 mins.
Hurry! Only 1 left in stock
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  • Aluminum cylinder heads sold in pairs only or 454 & 502 cu.In big-block GM applications.
  • Custom engraved with Sierra High-Performance logo
  • 320 cc intake runner/119cc exhaust runner
  • 2.25 intake/1.88 exhaust stainless steel valves
  • 5 angle valve seat cut
  • Up to 65HP increase over OE cylinder heads
  • Suitable for use on Mark IV, Gen V, & Gen VI GM blocks. Must use correct corresponding head gaskets
  • Std. BBC 7/16" rocker studs and 3/8" diameter pushrod guideplates
  • Rectangle intake ports
  • Use on factory non-adjustable valvetrain applications require adjustable rocker arm assemblies such as Sierra's 18-4507
  • Use Sierra 18-4506 guide plates to utilize factory 5/16" pushrods
Your Price: $117.23
Save: $114.62
(49% Off $231.85)
Part # 18-4508 ValueShip™ Eligible
SHIPS TOMORROW!* if ordered in 23 hrs 52 mins.
Hurry! Only 1 left in stock
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High performance head bolt kit-small block GM
Sierra
Average Customer Review for Head Gasket - 18-2946 - Sierra
Full StarFull StarFull StarEmpty StarEmpty Star Based On 2 Reviews | Write Review
Full StarEmpty StarEmpty StarEmpty StarEmpty StarDid not last
by Nathan from Lowell, Indiana on June 12, 2016
I installed this head gasket on my boat last fall and it has already blow out. Not even a full year later
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Full StarFull StarFull StarFull StarFull Starhead gasket
by Jim from Sykesville, Maryland on May 26, 2013
Perfect-good price.
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Full StarEmpty StarEmpty StarEmpty StarEmpty Star Based On 1 Review | Write Review
Full StarEmpty StarEmpty StarEmpty StarEmpty StarGASKETS
by Terry from Luthersville, Georgia on May 03, 2014
YOU NEED TO UPDATE YOUR WEB SITE. I ORDER HEAD AND INTAKE MANFOLD GASKETS AND THEY ARE THE WRONG PARTS. YOUR LISTING ARE WRONG. FOR EXAMPLE THE PART # FOR HEAD GASKET AND THE EXAMPLE IS THE SAME, HOWEVER, YOU SENT ME HEAD GASKET THAT IS FOR BIGGER ENGINE. THE INTAKE MANFOLD LIST FOR A 6 CYL AND 8 CYL AND I RECEIVED IT FOR 4 CYL. I ORDER THE SAME PARTS FROM BOAT BANDIT AND RECEIVED THE RIGHT PARTS. I WILL DEAL WITH BOAT BANDIT. THANKS VERY DISATFIED COUTOMER
(3 of 3 people found this review helpful)
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Average Customer Review for Head Gasket - 18-3881 - Sierra
Full StarFull StarFull StarFull StarFull Star Based On 1 Review | Write Review
Full StarFull StarFull StarFull StarFull StarGreat quality
by Andrew from Johnstown, Pennsylvania on July 16, 2012
Product was made of great quality and fit perfectly thanks again!
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