Sierra 18-7267 Dual Diaphragm Fuel Pump, Replaces Mercruiser 62092, for GM V-8 305 307 350 400

The Sierra 18-7267 is a dual diaphragm fuel pump built for GM V-8 engines in the 305, 307, 350, and 400 cid range. It delivers fuel pressure of 5.25 to 6.5 PSI and uses a dual diaphragm design that requires a sight glass for proper operation and fuel monitoring (sight glass not included). The pump features a flange with I.D. #41414 and a 1/4 inch-18 NPT threaded outlet connection for a secure fit into the fuel delivery line.

Constructed with a cast iron body, the 18-7267 is built to withstand the demands of a marine engine compartment, resisting corrosion and heat while maintaining consistent fuel delivery. It is a direct functional replacement for the original equipment fuel pump on applicable GM V-8 marine engines, restoring proper fuel pressure and diaphragm integrity when the factory pump fails or wears out. Cross-reference equivalents include GLM 77040, Mallory 9-35411, Mercruiser 62092, 62092T, 54552, and OMC 982063, making it straightforward to identify as a replacement even when working from a different part number.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-7267
• Product Type: Fuel Pump
• Pump Type: Dual Diaphragm
• Sight Glass: Required (not included)
• Flange I.D.: #41414
• Fuel Pressure: 5.25 to 6.5 PSI
• Outlet Connection: 1/4 inch-18 NPT
• Body Material: Cast Iron
• Fitment: GM (V-8) 305, 307, 350, 400
• OEM Cross Reference: GLM 77040, Mallory 9-35411, Mercruiser 62092, 62092T, 54552, OMC 982063
• Weight: 3.74 pounds
• UPC: 030999322388

Fitment

• GM (V-8) 305, 307, 350, 400 cid engines

Replaces (OEM)

• GLM 77040
• Mallory 9-35411
• Mercruiser 62092
• Mercruiser 62092T
• Mercruiser 54552
• OMC 982063

Frequently Asked Questions

What engines does the Sierra 18-7267 fuel pump fit? The 18-7267 is built for GM (V-8) 305, 307, 350, and 400 cid marine engines.

What fuel pressure does this pump produce? It delivers 5.25 to 6.5 PSI, matching the dual diaphragm design of the 18-7267.

Does the 18-7267 require a sight glass? Yes, this dual diaphragm pump requires a sight glass for proper operation, though the sight glass itself is not included with the 18-7267.

What OEM part numbers does the Sierra 18-7267 replace or cross to? It cross-references to GLM 77040, Mallory 9-35411, Mercruiser 62092, 62092T, 54552, and OMC 982063.

Is the Mercruiser 62092 fuel pump the same as the Sierra 18-7267? The 18-7267 is a functional equivalent to the Mercruiser 62092 and 62092T fuel pumps, using the same dual diaphragm design and pressure specification.

What material is the fuel pump body made of? The 18-7267 has a cast iron body designed to hold up in a marine engine environment.

What size is the outlet connection on the 18-7267? The outlet connection is 1/4 inch-18 NPT threaded.

How much does the Sierra 18-7267 fuel pump weigh? The 18-7267 weighs 3.74 pounds.

What is the flange size on this fuel pump? The 18-7267 uses a flange with I.D. #41414.

Is this a new or remanufactured fuel pump? The Sierra 18-7267 is a new dual diaphragm fuel pump, not a remanufactured unit.

Will the 18-7267 work on a 350 cid GM engine? Yes, the 18-7267 is designed for GM (V-8) engines including the 350 cid, along with the 305, 307, and 400 cid versions.

How is the 18-7267 different from a single diaphragm pump? The 18-7267 uses a dual diaphragm design, which requires a sight glass for monitoring, unlike single diaphragm fuel pumps that do not have this requirement.