See us on:
Visit CP on Facebook Visit CP on Twitter Visit CP on YouTube
Is your boat in the gallery?
Image Gallery  
Instructions & Guides:
Instructions  
Find Parts by Mercury Model:
OEM Part Finder  
What's on sale today?
Sale Specials  
What are you looking for Today?

Need Help? Call Us:

1-800-225-9871

Outside the USA? Call 707-585-9871

Manifolds & Accessories - Mercury

3” Exhaust Outlet Mercruiser 98503
Your Price:
$137.99

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

3" Exhaust Outlet Mercruiser 98503

676-18-1970-1

3” Exhaust Outlet Riser 15 degree down angle
Replaces: Mercruiser 98503, 98504
Use mounting kit 9-40580 (For early model I/O and inboards)
Our Inboard & Sterndrive Cooling Systems are built of the best marine grade material. We designed each part to stand up to the harsh marine environment, and made to specifically fit to the application you need.


4” Exhaust Outlet Mercruiser 44354
Your Price:
$128.99

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

4" Exhaust Outlet Mercruiser 44354

676-18-1976-1

4” Exhaust Outlet Riser 7 degree down angle
Replaces: Mercruiser 44354, 807914, 807988
Use mounting kit 9-40578 (For late I/O and inboards)
Our Inboard & Sterndrive Cooling Systems are built of the best marine grade material. We designed each part to stand up to the harsh marine environment, and made to specifically fit to the application you need.


Big Block Chevy Rings 502 4.470 Bore Metric Rings
Your Price:
$269.99

Big Block Chevy Rings 502 4.470 Bore Metric Rings

570-R4470

Big Block Chevy Rings 502 4.470 Bore Metric Rings

Plasma moly coated, ductile iron top rings are barrel-shaped to help control oil blow by when the piston wobbles in its bore The incredible bonding strength of the plasma moly coating results in a high resistance to heat, flaking and cylinder scuffing while the increased porosity results in improved top ring lubrication. The secondary ring's downward facing taper, in conjunction with a three-piece oil ring (available in standard or low tension), further increase sealing power to enhance performance. Recommended for street, racing or marine use. These rings feature a 2MM top ring a 1.5MM second ring and a 4MM oil ring pack and are perfect for a 4.468 bore


Elbow
Your Price:
$146.99

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

Elbow

676-18-1971

Additional Details:

  • Fits: MCM 140 (1966-1982), 470 (1976-1977), 165 & 200 in-line 6 cyl.
  • Fits: MCM Ford V-8 engines & MCM GM V-8 (305 & 350 cid) engines (1982 & older)

Use With:

Interchanges/Replaces

Barr

  • MC 20 76351
  • MC-20-60426

GLM

  • 51120

HGE

  • 6351

Mallory

  • 9-40558

Marine Power

  • 0993-001

Mercruiser Stern Drive

  • 49964A1
  • 49964A2
  • 60426A1
  • 76351A04
  • 76351A1
  • 76351A2

Osco

  • 6351

Elbow
Your Price:
$294.99

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

Elbow

676-18-1905

Additional Details:

  • For: Mercruiser 4 cyl. 224cu. in 3.7L (models: 165, 170, 180 & 190)

Use With:

Interchanges/Replaces

Barr

  • MC-20-90880

Mallory

  • 9-40550

Mercruiser Stern Drive

  • 90880

Osco

  • 879

Elbow
Your Price:
$274.99

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

Elbow

676-18-1937

Additional Details:

  • For: Mercruiser 4 cyl. 224 cu. in. 3.7L (models: 165, 170, 180, 190)

Use With:

Interchanges/Replaces

GLM

  • 51180

HGE

  • 8561

Mallory

  • 9-40551

Mercruiser Stern Drive

  • 98562A6

Osco

  • 8561

Elbow
Your Price:
$193.99

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

Elbow

676-18-1972

Additional Details:

  • Fits: MCM 2.5L & 3.0L/LX (1982 & newer)
  • Fits: Most late Model 120, 140HP Mercruiser applications

Use With:

Interchanges/Replaces

Barr

  • MC-20-76325

GLM

  • 51130

Mallory

  • 9-40552

Mercruiser Stern Drive

  • 12076A2
  • 76325A2

Osco

  • 6325

List of Containing Parts

Sierra Item # OE/Competitor # Quantity Description Image Comments
18-2833Barr
  • MC472799777
GLM
  • 31520
Mallory
  • 9-61407
Mercruiser Stern Drive
  • 27-52076
  • 27-99777
  • 27-997771
  • 27-997772
  • 27-99777B2
Osco
  • 52076
1Exhaust Elbow Gasket N/A

Elbow
Your Price:
$187.99

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

Elbow

676-18-1973

Additional Details:

  • Fits: Most early Model 120hp Mercruiser applications

Use With:

Interchanges/Replaces

Barr

  • MC-20-55538

Mallory

  • 9-40553

Mercruiser Stern Drive

  • 39920
  • 39920A1
  • 55538A2

Osco

  • 5538

Elbow
Your Price:
$245.99

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

Elbow

676-18-1974-1

Key Features:

  • Comes with 18-0897 gasket and brass plugs

Additional Details:

  • Fits: V-6 & V-8 applications 0° (3" O.D. Riser)

Use With:

Interchanges/Replaces

Barr

  • MC-20-98502

GLM

  • 51192

Mallory

  • 9-40554

Mercruiser Stern Drive

  • 98502A2

Osco

  • 8502

List of Containing Parts

Sierra Item # OE/Competitor # Quantity Description Image Comments
18-0897Barr
  • MC 20 99208
  • MC47-27-41813
GLM
  • 30240
Mallory
  • 9-61413
Mercruiser Stern Drive
  • 27-41813
  • 27-860233
  • 27-863724
Osco
  • 8503-GR
1Exhaust Elbow Gasket N/A

Elbow
Your Price:
$258.99

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

Elbow

676-18-1978

Additional Details:

  • Application: V-8 inboard applications only

Use With:

Interchanges/Replaces

Barr

  • MC-20-76771

GLM

  • 51190

Mallory

  • 9-40556

Mercruiser Stern Drive

  • 53779A1
  • 53779A2
  • 60427A2
  • 76771A2
  • 76771A3

Osco

  • 6771

End Cap to Manifold Gasket
Your Price:
$5.99

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

End Cap to Manifold Gasket

676-18-1210

Additional Details:

  • Fits: MCM 120 & 160

Interchanges/Replaces

Barr

  • MC472739923

GLM

  • 31420

Mallory

  • 9-61409

Mercruiser Stern Drive

  • 27-39923

Osco

  • 52076

End Plate Gasket 9-40570
Your Price:
$2.99

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

End Plate Gasket 9-40570

676-18-2832

End Plate Gasket
Included in 9-40570 mounting kit
Our Inboard & Sterndrive Cooling Systems are built of the best marine grade material. We designed each part to stand up to the harsh marine environment, and made to specifically fit to the application you need.


Exhaust Boot
Your Price:
$33.99

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

Exhaust Boot

676-18-2748

Additional Details:

  • Upper Tube: 4" or 101.6mm
  • Fits: MCM 120, 140 & GM V-6 & V-8 engines

Use With:

Interchanges/Replaces

GLM

  • 89120

Mallory

  • 9-72805

Mercruiser Stern Drive

  • 32-44348
  • 32-44348001
  • 32-44348T

Exhaust Elbow Gasket
Your Price:
$3.99

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

Exhaust Elbow Gasket

676-18-0897

Additional Details:

  • For: Standard cooling, restrictor gasket
  • Fits: 1981-1997 GM V-6 & V-8 Engines with center rise outlet exhaust manifold

Use With:

Interchanges/Replaces

Barr

  • MC 20 99208
  • MC47-27-41813

GLM

  • 30240

Mallory

  • 9-61413

Mercruiser Stern Drive

  • 27-41813
  • 27-860233
  • 27-863724

Osco

  • 8503-GR

Exhaust Elbow Gasket
Your Price:
$7.99

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

Exhaust Elbow Gasket

676-18-2849-1

Additional Details:

  • For: Standard cooling, full flow 4 slot gasket
  • Fits: 1998-2001 Gm V-6 & V-8 with center rise outlet exhaust manifold

Use With:

Interchanges/Replaces

Barr

  • MC 47 27 87105

GLM

  • 32080

Mallory

  • 9-61414

Mercruiser Stern Drive

  • 27-818832
  • 27-860232
  • 27-863726
  • 27-87105
  • 27-871051

Osco

  • 8503-GO

Exhaust Elbow Gasket
Your Price:
$3.99

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

Exhaust Elbow Gasket

676-18-0954

Additional Details:

  • Fits: MIE 470

Interchanges/Replaces

Barr

  • MC47-27-92720

GLM

  • 32630

Mallory

  • 9-61415

Mercruiser Stern Drive

  • 27-92720

Exhaust Elbow Gasket
Your Price:
$2.99

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

Exhaust Elbow Gasket

676-18-2833

Additional Details:

  • Fits: MCM 120 (1993 & newer), 140/3.0L, 470, 165 in-line 6 cyl., GM V-8 small block (1982 & older)
  • Fits: Ford V-8 engines

Use With:

Interchanges/Replaces

Barr

  • MC472799777

GLM

  • 31520

Mallory

  • 9-61407

Mercruiser Stern Drive

  • 27-52076
  • 27-99777
  • 27-997771
  • 27-997772
  • 27-99777B2

Osco

  • 52076

Exhaust Elbow Gasket
Your Price:
$8.99

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

Exhaust Elbow Gasket

676-18-0672

Additional Details:

  • For: Closed cooling
  • Fits: GM V-6 & V-8 with center rise outlet exhaust manifold

Use With:

Interchanges/Replaces

Barr

  • MC 20 87918
  • MC-47-27-41811

GLM

  • 30220

Mallory

  • 9-61422

Mercruiser Stern Drive

  • 27-41811
  • 27-860231
  • 27-863725
  • 27-8637251

Osco

  • 8503-GB

Exhaust Elbow Gasket
Your Price:
$1.99

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

Exhaust Elbow Gasket

676-18-2819-1

Additional Details:

  • Fits: MCM 120

Use With:

Interchanges/Replaces

Barr

  • MC472739915

GLM

  • 31410

Mallory

  • 9-61423

Mercruiser Stern Drive

  • 27-39915

Osco

  • 5538-G

Exhaust Elbow Gasket Mercruiser 27-97542
Your Price:
$8.99

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

Exhaust Elbow Gasket Mercruiser 27-97542

676-18-0113

Exhaust Elbow Gasket
Replaces: Mercruiser 27-97542
For: 3.7L w/cast iron manifolds 1983-89
Our outdrive mounting gaskets are more tear resistant than the OEM and other aftermarket competitors and feature our exclusive “anti-stick” coating for easy removal the next time they need replaced.