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DK Hardware Professional Tax Exempt? Net 30? - DK Net Terms
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30 Days Easy Return. We are the largest supplier of the most adaptable, personalized hardware in the industry. We work hard to ensure you're satisfied with our products.
WARNING: This Product May Contain Chemicals Known to the State of California to Cause Cancer or Reproductive Harm. To Learn More Visit P65Warnings.ca.gov
Features
- Engineered to meet or exceed OEM specifications
- Adds 4" of height to exhaust riser to prevent back-flow issues or add exhaust hose clearance
- Fits: Small Block V8 305-350ci(Models 220 & 270) GM Big Block CH350 & 454XL)
- Requires two Sierra p/n 18-0305-1 gaskets
- Backed by SeaStar Solutions Limited Two-Year Warranty
Dimensions
4"
Type
Risers
Product Overview
Increase riser height for clearance or put exhaust outlets further above the waterline 4" can make a big difference in combatting back-flow issues on engines installed close to the waterline or transom. These Sierra spacers provide the extra height to prevent water from traveling back into the riser when throttling down and they can also provide added clearance for exhaust hose routing. Engineered to be compatible with GM based Crusader marine engines, these riser extensions feature machined mating surfaces to eliminate additional preparation during installation. Each riser is leak tested prior to paint to ensure quality. Boaters and technicians can be assured a Sierra part will fit right the first time and restore function to OEM standards.