OMC Sterndrive/Cobra Head Gaskets

Blowout
Save 22%-25% Off.
Head Gasket - Sierra
Your Price: $19.99
Save: $3.08
(13% Off $23.07)
Part # 18-2946
SHIPS TOMORROW!* if ordered in 19 hrs 28 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 - Sierra
Your Price: $38.99
Save: $7.54
(16% Off $46.53)
Part # 18-3873
Hurry! Only 1 left in stock
No Reviews | Write Review
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 for Mercruiser 27-811546, OMC Sterndrive/Cobra 3853811 3853511, Crusader 31137 - Sierra
Your Price: $87.99
Save: $15.17
(14% Off $103.16)
Part # 18-3874
SHIPS TOMORROW!* if ordered in 19 hrs 28 mins.
Hurry! Only 1 left in stock
No Reviews | Write Review
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
Head Gasket - Sierra
Your Price: $30.99
Save: $5.02
(13% Off $36.01)
Part # 18-3876
SHIPS TOMORROW!* if ordered in 19 hrs 28 mins.
No Reviews | Write Review
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
Head Gasket - Sierra
Your Price: $42.99
Save: $8.50
(16% Off $51.49)
Part # 18-3877
SHIPS TOMORROW!* if ordered in 19 hrs 28 mins.
No Reviews | Write Review
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 - Sierra
Your Price: $30.99
Save: $4.79
(13% Off $35.78)
Part # 18-3878
SHIPS TOMORROW!* if ordered in 19 hrs 28 mins.
No Reviews | Write Review
Replaces OEM part #
  • CHRYSLER INBOARD 4417375
  • MERCURY MARINE 27-13709T
  • OMC 912766
For: Mercruiser 224 ( 3.7L ) CID Engine Model 470
Head Gasket - Sierra
Your Price: $28.99
Save: $6.00
(17% Off $34.99)
Part # 18-3879
SHIPS TOMORROW!* if ordered in 19 hrs 28 mins.
No Reviews | Write Review
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 - Sierra
Your Price: $42.99
Save: $7.00
(14% Off $49.99)
Part # 18-3880
SHIPS TOMORROW!* if ordered in 19 hrs 28 mins.
No Reviews | Write Review
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 - Sierra
Your Price: $47.99
Save: $9.56
(16% Off $57.55)
Part # 18-3881
SHIPS TOMORROW!* if ordered in 19 hrs 28 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 - Sierra
Your Price: $78.99
Save: $14.50
(15% Off $93.49)
Part # 18-3883
SHIPS TOMORROW!* if ordered in 19 hrs 28 mins.
No Reviews | Write Review
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 - Sierra
Your Price: $58.99
Save: $11.18
(15% Off $70.17)
Part # 18-3887
SHIPS TOMORROW!* if ordered in 19 hrs 28 mins.
No Reviews | Write Review
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 9-63705
Mallory Gasket, Cylinder head 9-63705
Spring Sale Price: $43.19
Save: $14.36
(24% Off $57.55)
Part # 9-63705
SHIPS TOMORROW!* if ordered in 19 hrs 28 mins.
Hurry! Only 1 left in stock
No Reviews | Write Review
Replaces GLM #:36140
Replaces Original Equipment Manufacturer(OEM):Mercruiser
Replaces Original Equipment Manufacturer # (OEM #):27-47453
Fits Application:inline 6 cyl.
Mallory Gasket, Cylinder head 9-63704
Mallory Gasket, Cylinder head 9-63704
Spring Sale Price: $38.69
Save: $11.30
(22% Off $49.99)
Part # 9-63704
SHIPS TOMORROW!* if ordered in 19 hrs 28 mins.
Hurry! Only 1 left in stock
No Reviews | Write Review
Replaces Original Equipment Manufacturer(OEM):MERCRUISER
Replaces Original Equipment Manufacturer # (OEM #):27-34273
Mallory Gasket, Cylinder Head 9-63703
Mallory Gasket, Cylinder Head 9-63703
Spring Sale Price: $79.19
Save: $23.97
(23% Off $103.16)
Part # 9-63703
SHIPS TOMORROW!* if ordered in 19 hrs 28 mins.
No Reviews | Write Review
Replaces Original Equipment Manufacturer(OEM):Mercruiser
Replaces Original Equipment Manufacturer # (OEM #):27-811546
Fits Application:502 cid 8.2L
Mallory Gasket, Cylinder Head 9-63702
Mallory Gasket, Cylinder Head 9-63702
Spring Sale Price: $27.89 (Out of stock)
Save: $7.89
(22% Off $35.78)
Part # 9-63702
No Reviews | Write Review
Replaces GLM #:36120
Replaces Original Equipment Manufacturer(OEM):Mercruiser
Replaces Original Equipment Manufacturer # (OEM #):27-13709T
Fits Application:224 cid 3.7L
Mallory Gasket, Cylinder Head 9-63701
Mallory Gasket, Cylinder Head 9-63701
Spring Sale Price: $38.69
Save: $12.80
(24% Off $51.49)
Part # 9-63701
SHIPS TOMORROW!* if ordered in 19 hrs 28 mins.
No Reviews | Write Review
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 9-63700
Mallory Gasket, Cylinder head 9-63700
Spring Sale Price: $17.99
Save: $5.08
(22% Off $23.07)
Part # 9-63700
SHIPS TOMORROW!* if ordered in 19 hrs 28 mins.
No Reviews | Write Review
Replaces GLM #:36150
Replaces Original Equipment Manufacturer(OEM):Merc / OMC / Volvo / Chris craft
Replaces Original Equipment Manufacturer # (OEM #):27-52364 / 3853336
Fits Application:181 cid 3.0L
Mallory Gasket, Cylinder Head 9-63707
Spring Sale Price: $26.09
Save: $8.90
(25% Off $34.99)
Part # 9-63707
SHIPS TOMORROW!* if ordered in 19 hrs 28 mins.
Hurry! Only 1 left in stock
No Reviews | Write Review
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
Mallory Gasket, Cylinder Head 9-63711
Spring Sale Price: $27.89
Save: $7.89
(22% Off $35.78)
Part # 9-63711
SHIPS TOMORROW!* if ordered in 19 hrs 28 mins.
No Reviews | Write Review
Replaces GLM #:36120
Replaces Original Equipment Manufacturer(OEM):Mercruiser/OMC/Chrysler
Replaces Original Equipment Manufacturer # (OEM #):27-13709T / 912766 / 4417375
Fits Application:3.7L 4 cyl, & Ford 460 CID
Mallory Gasket, Cylinder Head 9-63706
Spring Sale Price: $27.89
Save: $8.12
(22% Off $36.01)
Part # 9-63706
SHIPS TOMORROW!* if ordered in 19 hrs 28 mins.
Hurry! Only 1 left in stock
No Reviews | Write Review
Replaces GLM #:36160
Replaces Original Equipment Manufacturer(OEM):Merc / OMC / Volvo / more
Replaces Original Equipment Manufacturer # (OEM #):27-75611, 3853380
Fits Application:5.0L, 5.7L, 305/350 cid
Mallory Gasket, Cylinder Head 9-63708
Spring Sale Price: $71.09 (Out of stock)
Save: $22.40
(23% Off $93.49)
Part # 9-63708
No Reviews | Write Review
Replaces GLM #:36170
Replaces Original Equipment Manufacturer(OEM):Mercruiser/OMC/Volvo
Replaces Original Equipment Manufacturer # (OEM #):27-75647/3853732
Fits Application:MCM/MIE Ford V-8 engines 1971-77
Cylinder Head 18-4503 - Sierra
Your Price: $1590.66
Save: $345.13
(17% Off $1935.79)
Part # 18-4503
SHIPS TOMORROW!* if ordered in 19 hrs 28 mins.
Hurry! Only 1 left in stock
No Reviews | Write Review
  • 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
Your Price: $2819.54
Save: $474.14
(14% Off $3293.68)
Part # 18-4504
SHIPS TOMORROW!* if ordered in 19 hrs 28 mins.
Hurry! Only 1 left in stock
No Reviews | Write Review
  • 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
Your Price: $151.54
Save: $36.24
(19% Off $187.78)
Part # 18-4508
SHIPS TOMORROW!* if ordered in 19 hrs 28 mins.
Hurry! Only 1 left in stock
No Reviews | Write Review
High performance head bolt kit-small block GM
Sierra
Average Customer Review for Head Gasket - Sierra
Based On 1 Review
head gasket
by Jim from Sykesville, Maryland on May 26, 2013
Perfect-good price.
Was this review helpful?
Average Customer Review for Head Gasket - Sierra
Based On 1 Review
Great quality
by Andrew from Johnstown, Pennsylvania on July 16, 2012
Product was made of great quality and fit perfectly thanks again!
Was this review helpful?
This product ships in 1 to 3 business days.

Add to Cart and enter your Postal Code to determine the shipping charges and estimated delivery date.
* Most products and orders leave our warehouse in 1 business day. However, select items may take more processing time. Alaska and Hawaii orders please add 1 additional warehouse processing day.
Standard Shipping Policies
Great Boating Days are Ahead!
Enjoy Extra Discounts 5-20% Off During the SPRING SAVINGS SALE!
Great Boating Days are Ahead!
Enjoy Extra Discounts 5-20% Off During the SPRING SAVINGS SALE!