Powerhead Gasket Set 

Interchanges/Replaces

GLM

  • 39250

Mallory

  • 9-64201
  • 9-64212

Mercury Marine

  • 27-11338A85
  • 27-11338A88
  • 27-89221A32
  • 27-89221A84
  • 27-89221A85
  • 27-89221A88

List of Containing Parts

Sierra Item # OE/Competitor # Quantity Description Image Comments
18-0129GLM
  • 30670
Mallory
  • 9-60062
Mercury Marine
  • 27-65744
  • 27-657441
  • 27-657442
  • 27-657443
6Reed Block Gasket N/A
18-0135GLM
  • 32880
Mercury Marine
  • 27-78246
  • 27-782461
1Adapter Cover Gasket N/A
18-0182GLM
  • 30610
Johnson/Evinrude Outboard
  • 310058
Mallory
  • 9-60002
Mercury Marine
  • 27-62386
  • 27-62386001
Mercury Race Outboard
  • 27-62386001
2Thermostat Gasket N/A
18-0359GLM
  • 30740
Mercury Marine
  • 27-67275
  • 27-672751
1Induction Silencer Cover Gasket N/A
18-0384GLM
  • 32350
Mercury Marine
  • 27-817533
  • 27-89221
  • 27-892211
  • 27-8M0027781
3Carburetor Gasket N/A
18-0858GLM
  • 81430
Mallory
  • 9-76516
Mercruiser Stern Drive
  • 25-54029
Mercury Marine
  • 25-54029
Mercury Sport Jet
  • 25-54029
1O-Ring N/A
18-0860GLM
  • 81520
Mercruiser Stern Drive
  • 25-62700
Mercury Marine
  • 25-62700
Mercury Sport Jet
  • 25-62700
1O-Ring N/A
18-0936GLM
  • 31990
Mallory
  • 9-60057
Mercury Marine
  • 27-67624
  • 27-78690
  • 27-78690002
Mercury Sport Jet
  • 27-78690
  • 27-78690002
2Relief Valve Plate Gasket N/A
18-0952GLM
  • 32330
Mercruiser Stern Drive
  • 27-88907003
Mercury Marine
  • 27-88907
  • 27-88907003
Mercury Sport Jet
  • 27-88907
2Relief Valve Plate Gasket N/A
18-2501GLM
  • 31680
Mallory
  • 9-60060
Mercury Marine
  • 27-67738
  • 27-93536
  • 27-935361
1Reed Block Housing Gasket N/A
18-2502GLM
  • 32150
Mercury Marine
  • 27-87396
  • 27-90484
  • 27-904841
Mercury Race Outboard
  • 27-90484
  • 27-904841
2Divider Plate Gasket N/A
18-2503GLM
  • 32530
Mercury Marine
  • 27-78068
  • 27-99177
  • 27-991771
  • 27-991772
1Drive Shaft Housing to Exhaust Plate Gasket N/A
18-2509GLM
  • 31690
Mercury Marine
  • 27-67751
3Carburetor Mounting Gasket N/A
18-2510GLM
  • 32450
Mercury Marine
  • 27-96761
  • 27-967611
1Reed Block Housing Gasket N/A
18-2511GLM
  • 32510
Mercury Marine
  • 27-67074
  • 27-88727
  • 27-99173
  • 27-99173 2
  • 27-991731
  • 27-991734
1Drive Shaft Housing to Exhaust Plate Gasket N/A
18-2513GLM
  • 30890
Mallory
  • 9-60049
  • 9-60050
Mercury Marine
  • 27-11338
  • 27-67208
Mercury Sport Jet
  • 27-11338
2Crankcase Gasket (Cyl. Block Sealing V-6) N/A
18-2803GLM
  • 32120
Mercury Marine
  • 27-90430
  • 27-904301
3Carburetor Mounting Gasket N/A
18-2808GLM
  • 32440
Mercury Marine
  • 27-96278
Mercury Race Outboard
  • 27-96278
2Cylinder Cover Gasket N/A
18-2826GLM
  • 31040
Mallory
  • 9-60036
Mercruiser Stern Drive
  • 27-33146
  • 27-856704
Mercury Marine
  • 27-33146
  • 27-85610
  • 27-856101
1Water Pump Base Gasket N/A
18-2914GLM
  • 31010
Mallory
  • 9-60034
Mercruiser Stern Drive
  • 27-32433
  • 27-856081
  • 27-8M0090319
Mercury Marine
  • 27-30603
  • 27-32433
  • 27-85608
  • 27-856081
  • 27-8M0090319
1Water Pump Gasket N/A
18-2915GLM
  • 31020
Mallory
  • 9-60035
Mercruiser Stern Drive
  • 27-32434
  • 27-856091
  • 27-858524
Mercury Marine
  • 27-30604
  • 27-32434
  • 27-85609
  • 27-856091
  • 27-858524
1Water Pump Gasket N/A
18-2919GLM
  • 31050
Mallory
  • 9-60031
Mercruiser Stern Drive
  • 27-426311
Mercury Marine
  • 27-42631
  • 27-426311
1Water Pump Gasket N/A
18-3110GLM
  • 12830
Mallory
  • 9-43604
Mercruiser Stern Drive
  • 26-38970
Mercury Marine
  • 26-29677
  • 26-36557A1
  • 26-38970
2Water Pump Housing Bushing N/A
18-3862GLM
  • 35860
Mallory
  • 9-63853
Mercury Marine
  • 27-41246
  • 27-41246-1
  • 27-412462
  • 27-41247
  • 27-41247T01
  • 27-96543
2Head Gasket N/A
18-7153GLM
  • 81180
Mallory
  • 9-76505
Mercruiser Stern Drive
  • 25-25439
Mercury Marine
  • 25-25439
Mercury Race Outboard
  • 25-25439
Mercury Race Sterndrive
  • 25-25439
OMC Stern Drive
  • 3852565
  • 911851
Volvo Penta
  • 3852565
  • 997368
1O-Ring N/A
18-7157GLM
  • 83410
Mallory
  • 9-76542
Mercruiser Stern Drive
  • 25-29976
Mercury Marine
  • 25-29976
1O-Ring N/A
18-7159GLM
  • 83440
Mallory
  • 9-76544
Mercr iser Stern Drive
  • 25-31534
  • 25-48451
Mercury Marine
  • 25-31534
1O-Ring N/A
18-7162Chrysler/Force/US Marine
  • 25-33145
GLM
  • 82260
Johnson/Evinrude Outboard
  • 302337
Mallory
  • 9-76547
Mercruiser Stern Drive
  • 25-32424
  • 25-33145
Mercury Marine
  • 25-33145
Mercury Sport Jet
  • 25-33145
OMC Stern Drive
  • 302337
  • 302377
  • 3852044
Sears
  • 25-33145
Volvo Penta
  • 3852044
1O-Ring N/A
18-7164GLM
  • 81260
Johnson/Evinrude Outboard
  • 302537
Mercruiser Stern Drive
  • 25-33466
  • 25-67675
  • 25-846356
  • 27-898101789
Mercury Marine
  • 25-33466
  • 25-67675
  • 25-846356
1O-Ring N/A
18-7168GLM
  • 80120
Johnson/Evinrude Outboard
  • 202893
Mallory
  • 9-76550
Mercruiser Stern Drive
  • 25-21720
  • 25-26834
  • 25-48171
  • 25-801334436
Mercury Marine
  • 25-20587
  • 25-21720
  • 25-26834
  • 25-48171
  • 25-801334436
OMC Stern Drive
  • 202893
  • 3852033
Volvo Penta
  • 3852033
4O-Ring N/A
18-7174Chrysler/Force/US Marine
  • 25-45711
  • 25-F455342
GLM
  • 81140
Johnson/Evinrude Outboard
  • 326649
  • 553127
Mallory
  • 9-76553
Mercruiser Stern Drive
  • 25-45711
Mercury Marine
  • 25-45711
Mercury Sport Jet
  • 25-45711
OMC Stern Drive
  • 326649
  • 553127
  • 910582
2O-Ring N/A
18-7176Chrysler/Force/US Marine
  • 25-90011
  • 25-F74305
  • F694555
  • F74035
  • F74305-1
GLM
  • 81390
Mallory
  • 9-76554
Mercruiser Stern Drive
  • 25-896523
  • 25-90011
Mercury Marine
  • 25-896523
  • 25-90011
1O-Ring N/A
18-7406GLM
  • 80100
OMC Stern Drive
  • 3852523
  • 911311
Volvo Penta
  • 3852523
1O-Ring N/A
18-7411GLM
  • 81240
Johnson/Evinrude Outboard
  • 321921
Mercruiser Stern Drive
  • 25-35480
  • 25-8M2000816
Mercury Marine
  • 25-35480
  • 25-47386
1O-Ring N/A
18-7421GLM
  • 80070
Mercury Marine
  • 25-16524
  • 25-20415
2O-Ring N/A
18-7812GLM
  • 40360
Mallory
  • 9-37751
Mercury Marine
  • 66599A2
  • 89031A2
1Fuel Pump Kit N/A
18-2506-1Mallory
  • 9-60046
Mercury Marine
  • 27-99176
  • 27-991762
  • 27-991763
  • 27-991764
Mercury Race Outboard
  • 27-99176
1Exhaust Plate Gasket N/A
18-2508-1GLM
  • 32540
Mercury Marine
  • 27-96440
  • 27-99776
  • 27-997761
2Exhaust Plate Gasket N/A
9-76560Mercury Marine
  • 25-38099
1O-RING N/A
18-7817Chrysler/Force/US Marine
  • 21-42990A10
  • 21-42990A7
  • 21-42990A8
GLM
  • 40290
Mercury Marine
  • 21-42990A1
  • 21-42990A10
  • 21-42990A11
  • 21-42990A2
  • 21-42990A3
  • 21-42990A4
  • 21-42990A5
  • 21-42990A6
  • 21-42990A7
  • 21-42990A8
  • 21-42990A9
  • 21-857005A1
Mercury Sport Jet
  • 21-42990A11
  • 21-857005A1
1Fuel Pump Kit N/A
NSSMercury Marine
  • 27-672741
1Gasket, Choke Plate to CarburetorNo ImageN/A
MSRP: $224.99
Your Price: $190.99
You Save: 15% off MSRP!

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