Sierra Marine Parts Catalog
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18-7489
WEBER 750 CARBURETOR
β’ Universal square fange mounting pattern
β’ High-luster polished exterior
β’ Electric choke
β’ Calibrated and fow-tested For mid to high range perFormance improvement
and throttle response.
CYLINDER HEADS
High Performance
β’ Up to 60 HP increase over OE cylinder heads
β’ 185cc intake runner/ 62cc exhaust runner
β’ 72cc combustion chambers
β’ 2.02 intake/1.60 exhaust stainless steel valves
β’ 5 angle valve seat cut
β’ Double drilled intake mounting For either standard 12 bolt
GM intake or late-model 8 bolt Vortec intake.
β’ Accepts both perimeter or center bolt valve covers
β’ Β‘its 5.7 & 6.2L small block GM V-8 applications.
β’ Aluminum cylinder heads sold in pairs only
β’ Custom engraved with Sierra High-PerFormance logo
β’ Lightweight aluminum suitable For Freshwater or closed
cooling applications
18-4503
β’ Cast Iron cylinder heads sold in pairs only
β’ OE look
β’ Corrosion resistance heavy-duty cast iron castings
suitable for saltwater usage
THERMOSTAT HOUSING
Replaces: 87290A4, 861006A1
Stainless Steel
Use 18-1989K Thermostat Service Kit
for replacement parts
THERMOSTAT SERVICE KIT
Service Kit for 18-1989 Thermostat Housing
SIERRAHIGHPERFORMANCEPRODUCTS
FUEL FILTER
Replaces: Yamaha MAR-FUELF-IL-TR
High Capacity - 6"
10 Micron
FUEL LINE HOSE
For fuel pump to carburetor connection. Replaces
copper or steel tubing 3/8" X 25" PTFE composite
hose with 5/8"-18 male inverted fare straight one
end, 5/8"-18 90Β° one end. SAE J1527 type A1
FUEL LINE HOSE
For fuel pump to carburetor connection. Replaces
copper or steel tubing 3/8" X 31" PTFE composite
hose with 5/8"-18 male inverted fare straight one
end, 5/8"-18 90Β° one end. SAE J1527 type A1
INTAKE MANIFOLD
Small-block GM with vortec cylinder heads
18-7628
INTAKE MANIFOLD
Small-block GM with vortec cylinder heads
Brass lined water jackets for salt water
applications
ELECTRIC FUEL PUMP
Includes bracket and mounting hardware
43 GPH β 7 PSI Max. β 1/4 NPSF for 3/8 hose
β operates with both gasoline and diesel fuel - 24 Volt only