Sierra 18-1908 MerCruiser Marine Boat Exhaust Riser Spacer Block 3" 93320
By Sierra
By Sierra
Part # | 18-1908 |
---|---|
Warranty | Limited Lifetime |
Made In | Taiwan |
Shipping Wt | 7 lbs |
$113.39 US
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Product Description
Sierra 18-1908 marine exhaust riser spacer block for MerCruiser center-rise exhaust systems from about 1985 through 2002. Replaces the 3 inch tall spacer that sits between the riser and manifold on many V6 and V8 applications. Does not come with gaskets, mounting hardware, or plugs. May require 3/4" and 1/8" pipe plugs depending on your configuration. Each purchase is for one spacer.
Riser mating bolt dimensions are 3-7/16" (87.3mm) by 3-1/16" (77.8mm) bolt center-to-center.
This part is new and high-quality cast iron construction. To determine if this is the correct replacement for you, look on your current part for casting numbers and match them to the cross reference below:
About Sierra
Sierra provides premium-quality aftermarket replacements for over 6,000 marine parts, tools, and components. Sierra products are engineered to meet or exceed OEM standards, and stand up in harsh marine environments. Every new Sierra part comes with a limited lifetime warranty that covers the useful life of the product against any defects in workmanship and materials.
Riser mating bolt dimensions are 3-7/16" (87.3mm) by 3-1/16" (77.8mm) bolt center-to-center.
This part is new and high-quality cast iron construction. To determine if this is the correct replacement for you, look on your current part for casting numbers and match them to the cross reference below:
Cross Reference | Part Number |
---|---|
MerCruiser | 93320 |
Osco Motors | 3320 |
Barr Marine | MC-20-93320A3 |
Sierra Marine | 18-1908 |
Aqua Power | n/a |
GLM Products | 50300 |
About Sierra
Sierra provides premium-quality aftermarket replacements for over 6,000 marine parts, tools, and components. Sierra products are engineered to meet or exceed OEM standards, and stand up in harsh marine environments. Every new Sierra part comes with a limited lifetime warranty that covers the useful life of the product against any defects in workmanship and materials.
$113.39 US
Free Shipping to the Lower 48 US States
(See all shipping options in cart)
20+ in stock(See all shipping options in cart)


Pay in 4 interest-free payments with 

Product Specifics
Brand | Sierra |
---|---|
Made In | Taiwan |
Fits | MerCruiser V6 and V8 Center-rise |
Item Weight | 6 lbs |
Manufacturer | Sierra |
Manufacturer # | 18-1908 |
Material | Cast Iron |
Part # | 18-1908 |
Product Type | Exhaust Spacer Block |
Replaces | 93320 |
Shipping Dims | 6" x 6" x 6" |
Shipping Wt | 7 lbs |
UPC | 808282127503 |
Warranty | Limited Lifetime |