Mercury MerCruiser Carburetor Spacer Quad Ring 806237

Mercury MerCruiser Quicksilver 806237 is a genuine OEM quad ring used in MerCruiser carburetor and linkage assemblies. Current Mercury parts sources identify it simply as RING-QUAD, while current diagram listings place it in carburetor assemblies where it is used with the carburetor spacer / adaptor and matching screws. That makes the SKU more precise than the generic “quad ring” wording alone.

Key Features

• Genuine Mercury Marine OEM part number 806237.
• Cataloged by current Mercury dealers as QUAD RING / RING-QUAD.
• Current carburetor assembly diagrams show it used with spacer / adaptor assembly 806177A3 and screw 10-54523.
• Current diagram references show quantity required: 2 in the listed carburetor applications.
• Current dealer listing shows GTIN 745061282612.
• Current shipping-spec listing shows approximate packaged size of 3.00 x 3.25 x 0.38 in and weight of 0.02 lb.

Engine Compatibility

The strongest supportable fitment for 806237 is older carbureted MerCruiser GM V8 applications shown in current Mercury parts diagrams. Current references place it in CARBURETOR/THROTTLE LINKAGE (WEBER - 4 BARREL) and related carburetor-and-linkage assemblies for models including MerCruiser 200 (2 BBL.) GM 305 V-8 1987, 230 (4 BBL.) GM 305 V-8 1987, 260 GM 350 V-8 1987, 260 (4 BBL.) GM 305 V-8 1987, 350 MAG Alpha GM 350 V-8 1987–1995, 5.0L (2 BBL.) GM 305 V-8 1988–1995, 5.0LX (4 BBL.) GM 305 V-8 1988–1995, 5.7L GM 350 V-8 1988–1995, 5.7L MIE GM 350 V-8 1994–1995, 454 MAG Bravo (Gen. V) GM 454 V-8 1992–1994, 7.4L Bravo (Gen. V) GM 454 V-8 1992–1996, and 7.4L MIE (LH) Gen. VI GM 454 V-8 1996–1997.

Serial Number Fitment Notice

Verify fitment by exact engine serial number and the correct carburetor / linkage diagram before ordering. Current Mercury dealer guidance notes that “where used” information is helpful but not always complete across superseded or revised numbers, so serial-number confirmation is still the safest match method.

When This Part Needs Replacement

This quad ring is typically replaced when the carburetor spacer sealing area is leaking, hardened, flattened, damaged, or when the carburetor assembly is already apart for service. Because current diagrams show 806237 as the sealing ring used with the spacer / adaptor assembly, renewing it during carburetor service is usually the smarter move than reusing an aged seal in the same location. This service guidance is a practical inference based on its documented carburetor-spacer application.

Installation Notes

Install 806237 only after confirming the exact Mercury MerCruiser carburetor diagram for the engine being serviced. Current parts diagrams place it in the carburetor-and-linkage area with adaptor / spacer 806177A3 and screw 10-54523, so seal position and surrounding hardware should be checked carefully during reassembly.

Alternate/Superseded Part Numbers

Current sources reviewed show 806237 as the active OEM Mercury reference for this quad ring. The sources checked did not show a clearly supported newer Mercury superseding part number for this seal.

Parts Desk Insight

This is a good example of why the SKU should lead the listing. Part 806237 is more than just a generic quad ring — current Mercury diagrams tie it to the carburetor spacer / adaptor sealing area — so matching by the exact part number and carburetor diagram is the safer move than ordering by seal shape alone.

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