Cooling Systems - Spacer

Manifold Riser Spacer
Your Price:
$147.99

Manifold Riser Spacer

676-18-1908

Additional Details:

  • Size: 3"
  • For: Mercruiser GM V6 229 & 262cu.in (Models 185 & 205)
  • For: Mercruiser GM Small block V8 305-350cu.in. (Models 200, 228, 230, 260 & 898)
  • For: Mercruiser GM Big Block V8 454cu,in (Models 330, 340 & 7.4L)

Use With:

Interchanges/Replaces

Barr

  • MC-20-93320A3

Mallory

  • 9-40530

Mercruiser Stern Drive

  • 93320

Osco

  • 3320

Manifold Riser Spacer Kit
Your Price:
$402.99

Manifold Riser Spacer Kit

676-18-1908K

Key Features:

  • Packaged as a set, complete with mounting hardware
  • 3" Riser Kit

Additional Details:

  • Fits: MCM V-6 carb & TBI eng. w/ 2 piece exhaust manifolds (s/n 0M614999 & below)

Use With:

Interchanges/Replaces

GLM

  • 50310

Mercruiser Stern Drive

  • 807476A6
  • 93320A13
  • 93320A2
  • 93320A3
  • 93320A5
  • 93320A6

List of Containing Parts

Sierra Item # OE/Competitor # Quantity Description Image Comments
18-1908Barr
  • MC-20-93320A3
Mallory
  • 9-40530
Mercruiser Stern Drive
  • 93320
Osco
  • 3320
2Manifold Riser Spacer N/A
18-4258Crusader
  • 113186
GLM
  • 21892
Mallory
  • 9-41205
Mercruiser Stern Drive
  • 22-33198
  • 22-33198A1
  • 22-41622
  • 22-46754
Osco
  • 1016012
2Pipe Plug N/A
18-4263Chrysler/Force/US Marine
  • 22-328021
  • 22-328022
  • F700633
  • FI5810151
GLM
  • 21893
Mercruiser Stern Drive
  • 22-32802
  • 22-328021
  • 22-328022
  • 22-841908
Mercury Marine
  • 22-30139
  • 22-32802
  • 22-328021
  • 22-328022
2Pipe Plug N/A
18-2849-1Barr
  • 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
2Exhaust Elbow Gasket N/A
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
2Exhaust Elbow Gasket N/A
18-0672Barr
  • 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
2Exhaust Elbow Gasket N/A
NSSMercruiser Stern Drive
  • 11-49838
8LockwasherNo ImageN/A

Manifold Spacer
Your Price:
$176.99

Manifold Spacer

676-18-1949

Key Features:

  • Ford small block V8 302-351 cu.in.
  • GM Big Block V8 454 cu.in.
  • GM Small Block 305-350 cu.in

Additional Details:

  • Size: 3"

Use With:

Interchanges/Replaces

Barr

  • CM 20-0097

GLM

  • 56030

Mallory

  • 9-40130

Osco

  • 994-S3