Mercury MerCruiser Quicksilver Drive-Gear Cup Spacer 66824
In stock items ship same or next day.
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
Product Description
Mercury 66824 is the spacer used between the drive-gear roller-bearing cups in specified MerCruiser upper driveshaft housings. The R/MR/Alpha One service diagram identifies this spacer for the 1.32 and 1.50 heavy-duty gear-ratio configurations.
Key Features
- Mercury catalog number: 23-66824
- Drive-gear roller-bearing cup spacer
- R/MR/Alpha One application: 1.32 and 1.50 heavy-duty ratios.
Engine Compatibility & Fitment Notice
Match the drive serial number, upper-gearset configuration and bearing arrangement before ordering. This is the bearing-cup spacer rather than an adjustable shim set. Bearing preload and gear setup must follow the drive service manual when the assembly is rebuilt.
When This Part Needs Replacement
Replace a damaged or distorted bearing-cup spacer identified during drive-gear or upper-housing bearing service.
Installation Notes
Follow the model-specific bearing and gear setup procedure; do not use the spacer as a substitute for the specified shims.
Mercury Parts Finder
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Parts Desk Insight
The heavy-duty 1.32/1.50 gearset limitation matters. A similar-looking upper housing does not establish the correct bearing spacer.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 1-3 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.