Sierra 18-7283 Fuel Pump for GM V-8 305/350 CID Mercruiser Stern Drive Engines, Replaces 6668677, B430367

The Sierra 18-7283 is a marine fuel pump built for GM V-8 (305 and 350 CID) Mercruiser stern drive engines. It is engineered to Sierra's standard for withstanding the harsh marine operating environment while meeting or exceeding the performance of the original equipment part it replaces. The pump is constructed of metal for durability under continuous engine-bay heat and vibration, and it mounts to the engine block using a flange mount with a hose barb inlet and barb outlet connection, matching the original fuel line routing. A mounting gasket is included, so the pump is ready to install without sourcing a separate gasket kit.

The 18-7283 fits specific Mercruiser stern drive applications by model and serial number: the 260/5.7L GM (IB) at serial number 5907058 and up, the 5.7L-GM at serial number F025000 and up, and the 300MR/TRS GM 350/V-8 built in 1985-1986. It is designed as a direct equivalent for the GM V-8 305 and 350 CID engine family used across these applications, and it cross-references to the OEM numbers 6668677 and B430367.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-7283
• Fits: GM V-8 (305 & 350 CID) engines
• Engine Applications: 260/5.7L GM (IB) serial 5907058 & up; 5.7L-GM serial F025000 & up; 300MR/TRS GM 350/V-8 (1985-1986)
• Flange I.D.: M60600
• Material: Metal
• Mounting Type: Flange Mount
• Inlet Connection Type: Hose Barb
• Outlet Connection Type: Barb
• Includes: Mounting gasket
• Item Dimensions: 5.75 x 4.5 x 4.5 inches
• Weight: 1.74 pounds
• UPC: 030999322548

Fitment

• 260/5.7L GM (IB), serial number 5907058 and up
• 5.7L-GM, serial number F025000 and up
• 300MR/TRS GM 350/V-8, 1985-1986

Replaces (OEM)

• 6668677
• B430367

Frequently Asked Questions

What engines does the Sierra 18-7283 fuel pump fit? The Sierra 18-7283 fits GM V-8 305 and 350 CID Mercruiser stern drive engines, specifically the 260/5.7L GM (IB) from serial number 5907058 and up, the 5.7L-GM from serial number F025000 and up, and the 300MR/TRS GM 350/V-8 built in 1985-1986.

Which OEM part numbers does this fuel pump replace? The 18-7283 cross-references to OEM numbers 6668677 and B430367 for the covered Mercruiser 300MR/TRS GM 350/V-8 application.

What material is the Sierra 18-7283 fuel pump made of? This fuel pump is made of metal, chosen for durability in the heat and vibration of a marine engine bay.

Does the 18-7283 fuel pump include a mounting gasket? Yes, a mounting gasket is included with the Sierra 18-7283 fuel pump so it can be installed without buying a separate gasket.

What are the connection types on the Sierra 18-7283? The 18-7283 uses a hose barb inlet connection and a barb outlet connection, with a flange mount for attaching to the engine block.

What is the flange size on this fuel pump? The Sierra 18-7283 has a flange I.D. Of M60600.

How much does the Sierra 18-7283 fuel pump weigh? The Sierra 18-7283 weighs 1.74 pounds.

What are the dimensions of the Sierra 18-7283 fuel pump? The pump measures 5.75 x 4.5 x 4.5 inches.

Is the Sierra 18-7283 a genuine OEM part or an aftermarket replacement? The 18-7283 is a Sierra aftermarket replacement fuel pump engineered to meet or exceed the performance of the original equipment part it replaces, including OEM numbers 6668677 and B430367.

Will the 18-7283 work on any GM 350 marine engine? It is built for GM V-8 305 and 350 CID engines, but confirm your specific application against the listed serial number ranges: 260/5.7L GM (IB) 5907058 and up, 5.7L-GM F025000 and up, or the 1985-1986 300MR/TRS GM 350/V-8.

How is the Sierra 18-7283 mounted to the engine? The 18-7283 uses a flange mount design that bolts directly to the engine block in place of the original fuel pump.