Sierra 18-7072 Carburetor Kit for Rochester 4BBL Quadra Jet, Replaces OMC 384743 and Volvo 855889

The Sierra 18-7072 Carburetor Kit is a rebuild kit engineered for the Rochester 4BBL Quadra Jet carburetor used on inboard and sterndrive marine engines. It is built to bring a worn Quadra Jet carburetor back to proper operating condition, restoring correct fuel metering and a tight seal across the carburetor body so the engine idles, accelerates, and runs at wide-open throttle the way it did when new.

This kit is suited to 4 and 6 cylinder in-line engines as well as V-6 and V-8 engines in 305, 350, 427, 454, and 502 cubic inch displacements running the Rochester 4BBL Quadra Jet carburetor, including 1969-1995 MCM applications. Components in the kit feature a machined exterior finish for a precise, durable fit against mating carburetor surfaces. Sierra engineers this kit to meet or exceed the performance of the original equipment part it replaces, standing up to the demands of high-horsepower marine engines operating in a harsh saltwater or freshwater environment.

Because carburetor rebuild kits are matched to a specific carburetor design, confirming the Rochester 4BBL Quadra Jet application and the OEM numbers your current carburetor kit replaces is the fastest way to make sure 18-7072 is the correct kit before you order.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-7072
• Product Type: Carburetor Kit
• Compatible Carburetor: Rochester 4BBL Quadra Jet
• Engine Compatibility: 4 and 6 cylinder in-line, V-6 and V-8 (305, 350, 427, 454, and 502 CID) engines, 1969-1995 MCM
• Exterior Finish: Machined
• Weight: 0.35 pounds
• UPC: 030999320988
• OEM Cross-Reference: OMC 384743, OMC 979659, Volvo 855889

Fitment

• Rochester 4BBL Quadra Jet carburetor
• 4 and 6 cylinder in-line, V-6 and V-8 (305, 350, 427, 454, and 502 CID) engines
• 1969-1995 MCM applications

Replaces (OEM)

• OMC 384743
• OMC 979659
• Volvo 855889

Frequently Asked Questions

What carburetor does the Sierra 18-7072 kit fit? The Sierra 18-7072 carburetor kit is designed for the Rochester 4BBL Quadra Jet carburetor used on marine engines.

Which engines is 18-7072 compatible with? 18-7072 is compatible with 4 and 6 cylinder in-line engines and V-6 and V-8 engines in 305, 350, 427, 454, and 502 cubic inch displacements, including 1969-1995 MCM applications running the Rochester 4BBL Quadra Jet carburetor.

What OEM part numbers does the 18-7072 carburetor kit replace? This kit replaces OMC 384743, OMC 979659, and Volvo 855889 carburetor kits.

Is Sierra 18-7072 a genuine Sierra part or an aftermarket copy? 18-7072 is a genuine Sierra part, manufactured to meet or exceed the performance of the original equipment carburetor kit it replaces.

How much does the 18-7072 carburetor kit weigh? The Sierra 18-7072 carburetor kit weighs 0.35 pounds.

What finish do the components in this kit have? Components in the Sierra 18-7072 carburetor kit have a machined exterior finish for a precise fit against carburetor mating surfaces.

Does 18-7072 work on both OMC and Volvo engines? 18-7072 crosses over to OMC 384743, OMC 979659, and Volvo 855889, so it fits engines originally equipped with any of those OEM carburetor kits, provided the carburetor is the Rochester 4BBL Quadra Jet.

Can I install the 18-7072 carburetor kit myself? The Sierra 18-7072 kit is a rebuild kit for the Rochester 4BBL Quadra Jet carburetor and is intended to be installed during a standard carburetor rebuild by someone comfortable disassembling and reassembling a marine carburetor.

How do I confirm 18-7072 is the right kit for my boat? Match your current carburetor kit against the OEM numbers OMC 384743, OMC 979659, or Volvo 855889, or confirm your carburetor is a Rochester 4BBL Quadra Jet, to know that Sierra 18-7072 is the correct replacement.

What is included in the Sierra 18-7072 kit? The 18-7072 kit includes the components needed to rebuild a Rochester 4BBL Quadra Jet marine carburetor.