Marine O-Rings - Mercury

Big Block GM H/P Long Riser Kit
Your Price:
$3,399.99

Big Block GM H/P Long Riser Kit

520-SM454KXL

Big Block GM H/P Long Riser Kit

This system was designed for mildly modified factory engine packages. It shares the same features as the systems listed above, except its long tailpipe discharges water later in the exhaust stream. This provides some flexibility for mild cam shaft changes. Please consult us for cam shaft compatibility. A measurement sheet must be filled out when purchasing.


Impeller Housing Seal
Your Price:
$6.99

Normally Ships in 7-10 Days. Rush proccessing is available on Mallory items: See here.

Impeller Housing Seal

676-18-2536

Key Features:

  • V-4, V-6

Interchanges/Replaces

GLM

  • 86130

Johnson/Evinrude Outboard

  • 321120

Mallory

  • 9-76517

O-Ring
Your Price:
$1.99

Normally Ships in 7-10 Days. Rush proccessing is available on Mallory items: See here.

O-Ring

676-18-7146

Key Features:

  • Package of 5

Additional Details:

  • I.D.: 1.12" or 28.4mm
  • Width: 0.100" or 2.5mm

Interchanges/Replaces

GLM

  • 81220

Johnson/Evinrude Outboard

  • 554545

Mallory

  • 9-76539

Mercruiser Stern Drive

  • 25-47632
  • 25-864701

OMC Stern Drive

  • 554545

O-Ring
Your Price:
$1.99

Normally Ships in 7-10 Days. Rush proccessing is available on Mallory items: See here.

O-Ring

676-18-7151

Key Features:

  • Package of 5

Additional Details:

  • I.D.: 3.000" or 76.2mm
  • Width: 0.135" or 3.4mm

Interchanges/Replaces

GLM

  • 82340

Mallory

  • 9-76540

Mercruiser Stern Drive

  • 25-20081
  • 25-39572

Mercury Marine

  • 25-20081
  • 25-39572

O-Ring
Your Price:
$3.99

Normally Ships in 7-10 Days. Rush proccessing is available on Mallory items: See here.

O-Ring

676-18-7157

Key Features:

  • Package of 5

Additional Details:

  • I.D.: 3.500" or 88.9mm
  • Width: 0.210" or 5.3mm

Interchanges/Replaces

GLM

  • 83410

Mallory

  • 9-76542

Mercruiser Stern Drive

  • 25-29976

Mercury Marine

  • 25-29976

O-Ring
Your Price:
$2.99

Normally Ships in 7-10 Days. Rush proccessing is available on Mallory items: See here.

O-Ring

676-18-7159

Key Features:

  • Package of 5

Additional Details:

  • I.D.: 3.855" or 98mm
  • Width: 0.210" or 5.3mm

Interchanges/Replaces

GLM

  • 83440

Mallory

  • 9-76544

Mercruiser Stern Drive

  • 25-31534
  • 25-48451

Mercury Marine

  • 25-31534

O-Ring
Your Price:
$2.99

Normally Ships in 7-10 Days. Rush proccessing is available on Mallory items: See here.

O-Ring

676-18-7160

Key Features:

  • Package of 5

Additional Details:

  • I.D.: 2.635" or 67mm
  • Width: 0.210" or 5.3mm

Interchanges/Replaces

GLM

  • 83340

Mallory

  • 9-76545

Mercruiser Stern Drive

  • 25-31986

Mercury Marine

  • 25-31986

O-Ring
Your Price:
$1.99

Normally Ships in 7-10 Days. Rush proccessing is available on Mallory items: See here.

O-Ring

676-18-7161

Key Features:

  • Package of 5

Additional Details:

  • I.D.: 3.250" or 82.6mm
  • Width: 0.070" or 1.8mm

Interchanges/Replaces

GLM

  • 80420

Mallory

  • 9-76546

Mercruiser Stern Drive

  • 25-32546

Mercury Marine

  • 25-32546

O-Ring
Your Price:
$0.99

Normally Ships in 7-10 Days. Rush proccessing is available on Mallory items: See here.

O-Ring

676-18-7174

Key Features:

  • Package of 5

Additional Details:

  • I.D.: 0.620" or 15.7mm
  • Width: 0.100" or 2.5mm

Interchanges/Replaces

Chrysler/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

O-Ring
Your Price:
$0.99

Normally Ships in 7-10 Days. Rush proccessing is available on Mallory items: See here.

O-Ring

676-18-7426

Key Features:

  • Package of 2

Additional Details:

  • I.D.: 0.740" or 18.8mm
  • Width: 0.310" or 7.9mm

Interchanges/Replaces

GLM

  • 21330

Mallory

  • 9-76562

Mercruiser Stern Drive

  • 25-30271

Mercury Marine

  • 25-30271

Mercury Sport Jet

  • 25-30271

O-Ring
Your Price:
$2.99

Normally Ships in 7-10 Days. Rush proccessing is available on Mallory items: See here.

O-Ring

676-18-7419

Key Features:

  • Package of 5

Additional Details:

  • I.D.: 2.675" or 67.9mm
  • Width: 0.103" or 2.61mm

Interchanges/Replaces

Chrysler/Force/US Marine

  • 25-69202

GLM

  • 81470

Mallory

  • 9-76564

Mercury Marine

  • 25-69202

Sears

  • 25-69202

O-Ring
Your Price:
$0.99

Normally Ships in 7-10 Days. Rush proccessing is available on Mallory items: See here.

O-Ring

676-18-7420

Key Features:

  • Package of 5

Additional Details:

  • I.D.: 0.796" or 20.2mm
  • Width: 0.139" or 3.5mm

Interchanges/Replaces

GLM

  • 82110

Mallory

  • 9-76565

Mercruiser Stern Drive

  • 25-21836

Mercury Marine

  • 25-21836

Mercury Race Outboard

  • 25-21836

Mercury Race Sterndrive

  • 25-21836

Mercury Sport Jet

  • 25-21836

O-Ring
Your Price:
$1.99

Normally Ships in 7-10 Days. Rush proccessing is available on Mallory items: See here.

O-Ring

676-18-7445

Key Features:

  • Package of 2

Additional Details:

  • I.D.: 0.801" or 20.3mm
  • Width: 0.070" or 1.8mm

Interchanges/Replaces

GLM

  • 80190

Mallory

  • 9-76568

Mercruiser Stern Drive

  • 25-55801

O-Ring
Your Price:
$3.99

Normally Ships in 7-10 Days. Rush proccessing is available on Mallory items: See here.

O-Ring

676-18-7961

Additional Details:

  • I.D.: 3.650" or 92.7mm
  • Width: 0.135" or 3.4mm

Interchanges/Replaces

Mallory

  • 9-76569

Mercury Marine

  • 25-47254

O-Ring
Your Price:
$4.99

Normally Ships in 7-10 Days. Rush proccessing is available on Mallory items: See here.

O-Ring

676-18-7449

Key Features:

  • Package of 1

Additional Details:

  • I.D.: 4.487" or 114mm
  • Width: 0.103" or 2.6mm

Interchanges/Replaces

GLM

  • 81570

Mallory

  • 9-76581

Mercruiser Stern Drive

  • 25-97387

O-Ring
Your Price:
$1.99

Normally Ships in 7-10 Days. Rush proccessing is available on Mallory items: See here.

O-Ring

676-18-76695

Additional Details:

  • I.D.: 1.220"
  • Width: .095"

Interchanges/Replaces

Mallory

  • 9-76695

Mercury Marine

  • 25-803513007

Nissan/Tohatsu Outboard

  • 3R0-07422-0

O-Ring
Your Price:
$0.99

Normally Ships in 7-10 Days. Rush proccessing is available on Mallory items: See here.

O-Ring

676-18-7145

Key Features:

  • Package of 5

Additional Details:

  • I.D.: 0.250" or 6.35mm
  • Width: 0.100" or 2.54mm

Interchanges/Replaces

GLM

  • 81080

Johnson/Evinrude Outboard

  • 333572

Mallory

  • 9-76500

Mercruiser Stern Drive

  • 25-64068

Mercury Marine

  • 25-64068

OMC Stern Drive

  • 333572

O-Ring
Your Price:
$1.99

Normally Ships in 7-10 Days. Rush proccessing is available on Mallory items: See here.

O-Ring

676-18-7173

Key Features:

  • Package of 5

Additional Details:

  • I.D.: 1.875" or 47.6mm
  • Width: 0.135" or 3.4mm
  • Fits: MCM/MIE GM V-6 & V-8 engines, for thermostat housing with flat cover plate

Interchanges/Replaces

Chrysler/Force/US Marine

  • 25-30224

GLM

  • 82250

Johnson/Evinrude Outboard

  • 310327

Mallory

  • 9-76501

Mercruiser Stern Drive

  • 25-30224
  • 25-30224Q

Mercury Marine

  • 25-27018
  • 25-30224
  • 25-30224Q

OMC Stern Drive

  • 310327

O-Ring
Your Price:
$1.99

Normally Ships in 7-10 Days. Rush proccessing is available on Mallory items: See here.

O-Ring

676-18-7170

Key Features:

  • Package of 5

Additional Details:

  • I.D.: 1.365" or 34.7mm
  • Width: 0.135" or 3.4mm

Interchanges/Replaces

Chrysler/Force/US Marine

  • 25-33504

GLM

  • 82200

Johnson/Evinrude Outboard

  • 307239

Mallory

  • 9-76502

Mercruiser Stern Drive

  • 25-33504

Mercury Marine

  • 25-33504

OMC Stern Drive

  • 307239
  • 3852071

Volvo Penta

  • 3852071

O-Ring
Your Price:
$1.99

Normally Ships in 7-10 Days. Rush proccessing is available on Mallory items: See here.

O-Ring

676-18-0858

Key Features:

  • Package of 2

Additional Details:

  • I.D.: 2.8" or 71.12mm
  • Width: 0.103" or 2.6mm

Interchanges/Replaces

GLM

  • 81430

Mallory

  • 9-76516

Mercruiser Stern Drive

  • 25-54029

Mercury Marine

  • 25-54029

Mercury Sport Jet

  • 25-54029