Sierra 18-7615-1 Remanufactured Quadrajet Carburetor, Replaces 1347-816373A4 for Mercruiser & OMC Engines

The Sierra 18-7615-1 is a remanufactured Rochester Quadrajet 4-barrel carburetor built for Mercruiser and OMC engines. Each unit is precision remanufactured to meet or exceed OEM specifications, with the base resurfaced and new throttle shaft bushings installed during the rebuild process. Fuel mixture and idle settings are preset at the factory, so only minor idle and choke adjustments are typically needed once installed.

Every carburetor is recalibrated and re-engineered to maximize fuel efficiency and performance, then flow tested throughout the entire throttle range to verify correct operation before it ships. A base gasket is included with the carburetor, and a replacement gasket is available separately for future service. This is a direct-fit replacement carburetor intended for engines originally equipped with the OEM units it replaces.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-7615-1
• Product Type: Carburetor
• Carburetor Style: Rochester Quadrajet, 4 Barrel
• Condition: Remanufactured
• Base Gasket: Included
• Compatible Engines: Mercruiser & OMC Engines
• Weight: 10.1 pounds
• OEM Cross-Reference: 1347-816373A4, 1347-804624R1, 1347-804624R02

Fitment

• Mercruiser & OMC Engines

Replaces (OEM)

• 1347-816373A4
• 1347-804624R1
• 1347-804624R02

Frequently Asked Questions

What engines does the Sierra 18-7615-1 carburetor fit? The Sierra 18-7615-1 is built for Mercruiser and OMC engines as a direct replacement carburetor.

Is the 18-7615-1 a new or remanufactured carburetor? It is remanufactured: the base is resurfaced, new throttle shaft bushings are installed, and the unit is precision rebuilt to meet or exceed OEM specifications.

What OEM part numbers does the 18-7615-1 replace? The Sierra 18-7615-1 replaces OEM numbers 1347-816373A4, 1347-804624R1, and 1347-804624R02.

Does the carburetor come with a gasket? Yes, a base gasket is included with the Sierra 18-7615-1 carburetor.

What type of carburetor is the 18-7615-1? It is a Rochester Quadrajet style 4-barrel carburetor.

Will I need to adjust the carburetor after installing it? Fuel mixture and idle settings on the 18-7615-1 are preset at the factory, so typically only minor idle and choke adjustments are needed after installation.

How much does the 18-7615-1 carburetor weigh? The Sierra 18-7615-1 weighs 10.1 pounds.

Is the 18-7615-1 tested before it ships? Every Sierra 18-7615-1 carburetor is flow tested throughout the entire throttle range before shipping.

How does the remanufactured 18-7615-1 compare to a used OEM carburetor? The 18-7615-1 is recalibrated and re-engineered to maximize fuel efficiency and performance, and it is precision remanufactured to meet or exceed original OEM specifications, unlike an untested used unit.

Is a rebuild kit available for the 18-7615-1 if I need to service it later? Yes, a replacement carburetor kit is available separately for the Sierra 18-7615-1, along with a separate replacement gasket for future service.