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OMC Sterndrive/Cobra Head Gaskets

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Head Gasket - 18-2946 - Sierra
Savings Sale Price: $17.99
Save: $5.08
(22% Off $23.07)
Part # 18-2946 ValueShip™ Eligible
SHIPS TODAY!* if ordered in 47 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
Head Gasket - 18-3873 - Sierra
Savings Sale Price: $35.99
Save: $12.99
(26% Off $48.98)
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
Head Gasket - 18-3874 - Sierra
Savings Sale Price: $81.89
Save: $26.71
(24% Off $108.60)
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
Gasket-Head Gm 5.0L-5.7L - 18-3876 - Sierra
Savings Sale Price: $27.89
Save: $9.24
(24% Off $37.13)
Part # 18-3876 ValueShip™ Eligible
SHIPS TODAY!* if ordered in 47 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
Gasket-Head Gm 7.4L - 18-3877 - Sierra
Savings Sale Price: $38.69
Save: $12.80
(24% Off $51.49)
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
Head Gasket - 18-3878 - Sierra
Savings Sale Price: $27.89
Save: $9.00
(24% Off $36.89)
Part # 18-3878 ValueShip™ Eligible
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Replaces OEM part #
  • CHRYSLER INBOARD 4417375
  • MERCURY MARINE 27-13709T
  • OMC 912766
For: Mercruiser 224 ( 3.7L ) CID Engine Model 470
Gasket Cylinder Head - 18-3879 - Sierra
Savings Sale Price: $26.09
Save: $8.90
(25% Off $34.99)
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
Head Gasket - 18-3880 - Sierra
Savings Sale Price: $38.69
Save: $13.11
(25% Off $51.80)
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
Head Gasket - 18-3881 - Sierra
Savings Sale Price: $43.19
Save: $16.15
(27% Off $59.34)
Part # 18-3881 ValueShip™ Eligible
SHIPS TODAY!* if ordered in 47 mins. Replaces OEM part #
  • MERCURY MARINE 27-72622
  • MERCURY MARINE 27-47453
  • OMC 908237
For: GM 250 ( 4.1L ) CID ( 6 cyl ) Engine

Head Gasket - 18-3883 - Sierra
Savings Sale Price: $69.29
Save: $24.20
(25% Off $93.49)
Part # 18-3883 ValueShip™ Eligible
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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
Head Gasket - 18-3887 - Sierra
Savings Sale Price: $54.89
Save: $18.99
(25% Off $73.88)
Part # 18-3887 ValueShip™ Eligible
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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
Mallory Gasket, Cylinder Head 9-63703
Mallory Gasket, Cylinder Head 9-63703
Savings Sale Price: $61.79
Save: $41.37
(40% Off $103.16)
Part # 9-63703 ValueShip™ Eligible
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Replaces Original Equipment Manufacturer(OEM):Mercruiser
Replaces Original Equipment Manufacturer # (OEM #):27-811546
Fits Application:502 cid 8.2L
Mallory Gasket, Cylinder Head 9-63701
Mallory Gasket, Cylinder Head 9-63701
Savings Sale Price: $30.18
Save: $21.31
(41% Off $51.49)
Part # 9-63701 ValueShip™ Eligible
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Replaces GLM #:36110
Replaces Original Equipment Manufacturer(OEM):Mercruiser
Replaces Original Equipment Manufacturer # (OEM #):27-13687
Fits Application:454 7.4L
Mallory Gasket, Cylinder Head 9-63707
Savings Sale Price: $20.36
Save: $14.63
(41% Off $34.99)
Part # 9-63707 ValueShip™ Eligible
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Replaces GLM #:36100
Replaces Original Equipment Manufacturer(OEM):Mercruiser, OMC, Volvo
Replaces Original Equipment Manufacturer # (OEM #):27-816460, 3854299
Fits Application:4.3L 262 cid
Cylinder Head - 18-4503 - Sierra
Savings Sale Price: $1431.59
Save: $504.20
(26% Off $1935.79)
Part # 18-4503
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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
 
Cylinder Head - 18-4504 - Sierra
Savings Sale Price: $2537.59
Save: $756.09
(22% Off $3293.68)
Part # 18-4504
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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
Head Bolt Kit - 18-4508 - Sierra
Savings Sale Price: $151.55
Save: $57.11
(27% Off $208.66)
Part # 18-4508 ValueShip™ Eligible
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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 StarFull StarFull Star Based On 1 Review | Write Review
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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Q:
Is this a single head gasket or is this the set ?
A:
This is the singular head gasket.
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